LM4041 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE www.ti.com SLCS146C - FEBRUARY 2005 - REVISED MAY 2005 * FEATURES * * * * * 1.225-V Fixed and Adjustable Outputs (1.225 V to 10 V) Tight Output Tolerances and Low Temperature Coefficient - Max 0.1%, 100 ppm/C - A Grade - Max 0.2%, 100 ppm/C - B Grade - Max 0.5%, 100 ppm/C - C Grade - Max 1.0%, 150 ppm/C - D Grade Low Output Noise . . . 20 VRMS (Typ) Wide Operating Current Range . . . 45 A (Typ) to 12 mA Stable With All Capacitive Loads; No Output Capacitor Required 1.2 V . . . DBZ (SOT-23) PACKAGE (TOP VIEW) CATHODE 1 ANODE CATHODE 3 * Pin 3 must be connected to ANODE or left open. Adjustable . . . DBZ (SOT-23) PACKAGE (TOP VIEW) NC 4 NC ANODE 2 ANODE CATHODE NC Adjustable . . . DCK (SC-70) PACKAGE (TOP VIEW) NC 1 3 5 NC - No internal connection * Pin 2 must be connected to ANODE or left open. 1 1.2 V . . . LP (TO-92/TO-226) PACKAGE (TOP VIEW) 1 * 2 ANODE 2 CATHODE * 1.2 V . . . DCK (SC-70) PACKAGE (TOP VIEW) 3 * FB Available in - Industrial Temperature: -40C to 85C - Extended Temperature: -40C to 125C Applications - Data-Acquisition Systems - Power Supplies and Power-Supply Monitors - Instrumentation and Test Equipment - Process Control - Precision Audio - Automotive Electronics - Energy Management/Metering - Battery-Powered Equipment 5 FB NC - No internal connection Adjustable . . . LP (TO-92/TO-226) PACKAGE (TOP VIEW) ANODE 2 ANODE CATHODE 3 CATHODE 4 NC FB NC - No internal connection DESCRIPTION/ORDERING INFORMATION The LM4041 series of shunt voltage references are versatile, easy-to-use references with a vast array of applications. They require no external resistors or capacitors for operation and are stable with all capacitive loads. Additionally, the reference offers low dynamic impedance, low noise, and a low temperature coefficient to ensure a stable output voltage over a wide range of operating currents and temperatures. The LM4041 uses fuse and Zener-zap reverse breakdown voltage trim during wafer sort to offer four output voltage tolerances, ranging from 0.1% (max) for the A grade to 1% (max) for the D grade. Thus, a great deal of flexibility is offered to designers in choosing the best cost-to-performance ratio for their applications. The LM4041 is available in a fixed (1.225 V nominal) or an adjustable version (which requires an external resistor divider to set the output to a value between 1.225 V and 10 V). Packaged in space-saving SC-70 and SOT-23-3 and requiring a minimum current of 45 A (typ), the LM4041 also is ideal for portable applications. The TO-92 package also is available for through-hole packaging needs. The LM4041xI is characterized for operation over an ambient temperature range of -40C to 85C. The LM4041xQ is characterized for operation over an ambient temperature range of -40C to 125C. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright (c) 2005, Texas Instruments Incorporated LM4041 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE www.ti.com SLCS146C - FEBRUARY 2005 - REVISED MAY 2005 ORDERING INFORMATION TA DEVICE GRADE A grade: 0.1% initial accuracy and 100 ppm/C temperature coefficient PACKAGE (1) VZ SC-70 (DCK) 1.2 V SOT-23-3 (DBZ) TO-92/TO-226 (LP) SC-70 (DCK) B grade: 0.2% initial accuracy and 100 ppm/C temperature coefficient ADJ SOT-23-3 (DBZ) TO-92/TO-226 (LP) SC-70 (DCK) 1.2 V SOT-23-3 (DBZ) TO-92/TO-226 (LP) SC-70 (DCK) -40C to 85C C grade: 0.5% initial accuracy and 100 ppm/C temperature coefficient ADJ SOT-23-3 (DBZ) TO-92/TO-226 (LP) SC-70 (DCK) 1.2 V SOT-23-3 (DBZ) TO-92/TO-226 (LP) SC-70 (DCK) D grade: 1.0% initial accuracy and 150 ppm/C temperature coefficient ADJ SOT-23-3 (DBZ) TO-92/TO-226 (LP) SC-70 (DCK) 1.2 V SOT-23-3 (DBZ) TO-92/TO-226 (LP) (1) (2) 2 ORDERABLE PART NUMBER Reel of 3000 LM4041A12IDCKR Reel of 3000 LM4041A12IDBZR Reel of 250 LM4041A12IDBZT Bulk of 1000 LM4041A12ILP Reel of 2000 LM4041A12ILPR Reel of 3000 LM4041BIDCKR Reel of 3000 LM4041BIDBZR Reel of 250 LM4041BIDBZT Bulk of 1000 LM4041BILP Reel of 2000 LM4041BILPR Reel of 3000 LM4041B12IDCKR Reel of 3000 LM4041B12IDBZR Reel of 250 LM4041B12IDBZT Bulk of 1000 LM4041B12ILP Reel of 2000 LM4041B12ILPR Reel of 3000 LM4041CIDCKR Reel of 250 LM4041CIDCKT Reel of 3000 LM4041CIDBZR Reel of 250 LM4041CIDBZT Bulk of 1000 LM4041CILP Reel of 2000 LM4041CILPR Reel of 3000 LM4041C12IDCKR Reel of 3000 LM4041C12IDBZR Reel of 250 LM4041C12IDBZT Bulk of 1000 LM4041C12ILP Reel of 2000 LM4041C12ILPR Reel of 3000 LM4041DIDCKR Reel of 250 LM4041DIDCKT Reel of 3000 LM4041DIDBZR Reel of 250 LM4041DIDBZT Bulk of 1000 LM4041DILP Reel of 2000 LM4041DILPR Reel of 3000 LM4041D12IDCKR Reel of 3000 LM4041D12IDBZR Reel of 250 LM4041D12IDBZT Bulk of 1000 LM4041D12ILP Reel of 2000 LM4041D12ILPR TOP-SIDE MARKING (2) PREVIEW PREVIEW PREVIEW PREVIEW PREVIEW PREVIEW PREVIEW PREVIEW PREVIEW MH_ 4MH_ PREVIEW MM_ 4MM_ PREVIEW MJ_ 4MJ_ PREVIEW MN_ 4MN_ PREVIEW Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. DBZ/DCK: The actual top-side marking has one additional character that designates the assembly/test site. LM4041 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE www.ti.com SLCS146C - FEBRUARY 2005 - REVISED MAY 2005 ORDERING INFORMATION TA -40C to 125C (1) (2) DEVICE GRADE C grade: 0.5% initial accuracy and 100 ppm/C temperature coefficient D grade: 1.0% initial accuracy and 150 ppm/C temperature coefficient VZ ADJ PACKAGE (1) SOT-23-3 (DBZ) 1.2 V SOT-23-3 (DBZ) ADJ SOT-23-3 (DBZ) 1.2 V SOT-23-3 (DBZ) ORDERABLE PART NUMBER Reel of 3000 LM4041CQDBZR Reel of 250 LM4041CQDBZT Reel of 3000 LM4041C12QDBZR Reel of 250 LM4041C12QDBZT Reel of 3000 LM4041DQDBZR Reel of 250 LM4041DQDBZT Reel of 3000 LM4041D12QDBZR Reel of 250 LM4041D12QDBZT TOP-SIDE MARKING (2) 4MP_ 4MS_ 4MR_ 4MT_ Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. DBZ/DCK: The actual top-side marking has one additional character that designates the assembly/test site. 3 LM4041 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE www.ti.com SLCS146C - FEBRUARY 2005 - REVISED MAY 2005 FUNCTIONAL BLOCK DIAGRAM CATHODE + _ VREF(1) (2) FB(1) (2) ANODE (1) LM4041x (ADJ) only (2) LM4041x12 only Absolute Maximum Ratings (1) over free-air temperature range (unless otherwise noted) MIN VZ Continuous cathode voltage IZ Continuous cathode current JA Package thermal impedance (2) (3) TJ Operating virtual junction temperature Tstg Storage temperature range (1) (2) (3) -10 MAX V 25 mA DBZ package 206 DCK package 252 LP package 156 -65 UNIT 15 C/W 150 C 150 C Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. Maximum power dissipation is a function of TJ(max), JA, and TA. The maximum allowable power dissipation at any allowable ambient temperature is PD = (TJ(max) - TA)/JA. Operating at the absolute maximum TJ of 150C can affect reliability. The package thermal impedance is calculated in accordance with JESD 51-7. Recommended Operating Conditions IZ Cathode current VZ Reverse breakdown voltage (adjustable version) TA (1) 4 Free-air temperature See parametric tables MIN MAX (1) 12 mA 10 V LM4041 (I temperature) -40 85 LM4041 (Q temperature) -40 125 UNIT C LM4041 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE www.ti.com SLCS146C - FEBRUARY 2005 - REVISED MAY 2005 LM4041x12I Electrical Characteristics full-range TA = -40C to 85C (unless otherwise noted) PARAMETER VZ TEST CONDITIONS Reverse breakdown voltage IZ = 100 A Reverse breakdown voltage tolerance IZ = 100 A IZ,min Minimum cathode current VZ Average temperature coefficient of reverse breakdown voltage 25C TYP IZ = 1 mA IZ,min < IZ < 1 mA 1 mA < IZ < 12 mA LM4041B12I MAX MIN 1.225 TYP MAX 1.225 25C -1.2 1.2 -2.4 2.4 -9.2 9.2 -10.4 10.4 45 75 45 80 20 20 25C 15 15 100 Full range 25C 15 25C 0.7 Full range 25C 100 Full range mV A ppm/C 15 1.5 0.7 2 4 75 80 25C UNIT V Full range 25C IZ = 100 A VZ/IZ LM4041A12I MIN Full range IZ = 10 mA Reverse breakdown voltage change with cathode current change TA 6 1.5 2 4 8 6 mV 8 ZZ Reverse dynamic impedance IZ = 1 mA, f = 120 Hz, IAC = 0.1 IZ 25C 0.5 eN Wideband noise IZ = 100 A, 10 Hz f 10 kHz 25C 20 20 VRMS Long-term stability of reverse breakdown voltage t = 1000 h, TA = 25C 0.1C, IZ = 100 A 25C 120 120 ppm 1.5 0.5 1.5 5 LM4041 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE www.ti.com SLCS146C - FEBRUARY 2005 - REVISED MAY 2005 LM4041x12I Electrical Characteristics full-range TA = -40C to 85C (unless otherwise noted) PARAMETER VZ TEST CONDITIONS Reverse breakdown voltage IZ = 100 A Reverse breakdown voltage tolerance IZ = 100 A IZ,min Minimum cathode current VZ Average temperature coefficient of reverse breakdown voltage 25C TYP IZ = 1 mA IZ,min < IZ < 1 mA 1 mA < IZ < 12 mA LM4041D12I MAX MIN 1.225 TYP MAX 1.225 25C -6 6 -12 12 -14 14 -24 24 45 75 45 80 20 20 25C 15 15 100 Full range 25C 15 25C 0.7 Full range 25C 150 Full range mV A ppm/C 15 1.5 0.7 2 2.5 75 80 25C UNIT V Full range 25C IZ = 100 A VZ/IZ LM4041C12I MIN Full range IZ = 10 mA Reverse breakdown voltage change with cathode current change TA 6 2 2.5 2.5 8 8 mV 10 ZZ Reverse dynamic impedance IZ = 1 mA, f = 120 Hz, IAC = 0.1 IZ 25C 0.5 eN Wideband noise IZ = 100 A, 10 Hz f 10 kHz 25C 20 20 VRMS Long-term stability of reverse breakdown voltage t = 1000 h, TA = 25C 0.1C, IZ = 100 A 25C 120 120 ppm 6 1.5 0.5 2 LM4041 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE www.ti.com SLCS146C - FEBRUARY 2005 - REVISED MAY 2005 LM4041x12Q Electrical Characteristics full-range TA = -40C to 125C (unless otherwise noted) PARAMETER VZ TEST CONDITIONS Reverse breakdown voltage IZ = 100 A Reverse breakdown voltage tolerance IZ = 100 A IZ,min Minimum cathode current VZ Average temperature coefficient of reverse breakdown voltage 25C 25C Full range 25C IZ = 1 mA IZ = 100 A VZ/IZ LM4041C12Q MIN TYP IZ,min < IZ < 1 mA 1 mA < IZ < 12 mA LM4041D12Q MAX MIN 1.225 TYP 1.225 6 -12 12 18.4 -31 31 45 75 45 80 20 20 15 15 100 Full range 25C 15 25C 0.7 Full range Full range 25C 150 mV A ppm/C 15 1.5 0.7 2 2.5 75 80 25C UNIT V -6 25C 25C MAX -18.4 Full range IZ = 10 mA Reverse breakdown voltage change with cathode current change TA 6 2.5 2.5 8 0.5 2 8 mV 10 0.5 ZZ Reverse dynamic impedance IZ = 1 mA, f = 120 Hz, IAC = 0.1 IZ eN Wideband noise IZ = 100 A, 10 Hz f 10 kHz 25C 20 20 VRMS Long-term stability of reverse breakdown voltage t = 1000 h, TA = 25C 0.1C, IZ = 100 A 25C 120 120 ppm Full range 1.5 2 7 LM4041 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE www.ti.com SLCS146C - FEBRUARY 2005 - REVISED MAY 2005 LM4041xI (Adjustable Version) Electrical Characteristics full-range TA = -40C to 85C (unless otherwise noted) PARAMETER VREF TEST CONDITIONS Reference voltage IZ = 100 A, VZ = 5 V Reference voltage tolerance (1) IZ = 100 A, VZ = 5 V IZ,min Minimum cathode current VREF/IZ Reference voltage change with cathode current change VREF/VKA Reference voltage change with output voltage change IFB Feedback current VREF Average temperature coefficient of reference voltage (1) eN (1) 8 LM4041BI MIN 25C TYP 1 mA < IZ < 12 mA MAX 1.233 -2.5 2.5 -6.2 6.2 10.5 -14 14 45 25C 0.7 1.5 2 4 -1.55 -2 0.7 2 4 -1.55 -2 100 -2.5 60 120 25C 20 25C 15 100 120 mV mV/V nA 20 15 100 Full range A 6 -2.5 60 mV 1.5 2 6 Full range 75 80 2 Full range 25C 45 80 Full range 25C 75 UNIT V -10.5 Full range IZ = 1 mA, VZ = 5 V TYP 25C 25C IZ = 1 mA MIN 1.233 Full range IZ,min < IZ < 1 mA LM4041CI MAX Full range 25C IZ = 10 mA, VZ = 5 V ZZ TA 100 ppm/C IZ = 100 A, VZ = 5 V 25C 15 15 IZ = 1 mA, f = 120 Hz, IAC = 0.1 IZ, VZ = VREF 25C 0.3 0.3 IZ = 1 mA, f = 120 Hz, IAC = 0.1 IZ, VZ = 10 V 25C 2 2 Wideband noise IZ = 100 A, VZ = VREF, 10 Hz f 10 kHz 25C 20 20 VRMS Long-term stability of reverse breakdown voltage t = 1000 h, TA = 25C 0.1C, IZ = 100 A 25C 120 120 ppm Reverse dynamic impedance Reference voltage tolerance and average temperature coefficient change with output voltage (VZ). See Typical Characteristics. LM4041 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE www.ti.com SLCS146C - FEBRUARY 2005 - REVISED MAY 2005 LM4041xI (Adjustable Version) Electrical Characteristics full-range TA = -40C to 85C (unless otherwise noted) PARAMETER VREF IZ,min VREF/IZ TEST CONDITIONS Reference voltage IZ = 100 A, VZ = 5 V Reference voltage tolerance (1) IZ = 100 A, VZ = 5 V Reference voltage change with output voltage change IFB Feedback current IZ,min < IZ < 1 mA IZ = 1 mA ZZ eN (1) Average temperature coefficient of reference voltage (1) 25C -12 12 -24 24 45 25C 25C 0.7 mV A 2 2.5 2 6 -1.55 -2 Full range 25C 75 80 Full range UNIT V Full range mV 8 Full range 25C IZ = 1 mA, VZ = 5 V MAX 1.233 -3 60 Full range IZ = 10 mA, VZ = 5 V VREF TYP Full range 1 mA < IZ < 12 mA VREF/VKA LM4041DI MIN 25C 25C Minimum cathode current Reference voltage change with cathode current change TA 150 200 25C 20 25C 15 150 Full range mV/V nA ppm/C IZ = 100 A, VZ = 5 V 25C 15 IZ = 1 mA, f = 120 Hz, IAC = 0.1 IZ, VZ = VREF 25C 0.3 IZ = 1 mA, f = 120 Hz, IAC = 0.1 IZ, VZ = 10 V 25C 2 Wideband noise IZ = 100 A, VZ = VREF, 10 Hz f 10 kHz 25C 20 VRMS Long-term stability of reverse breakdown voltage t = 1000 h, TA = 25C 0.1C, IZ = 100 A 25C 120 ppm Reverse dynamic impedance Reference voltage tolerance and average temperature coefficient change with output voltage (VZ). See Typical Characteristics. 9 LM4041 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE www.ti.com SLCS146C - FEBRUARY 2005 - REVISED MAY 2005 LM4041xQ (Adjustable Version) Electrical Characteristics full-range TA = -40C to 125C (unless otherwise noted) PARAMETER VREF TEST CONDITIONS Reference voltage IZ = 100 A, VZ = 5 V Reference voltage tolerance (1) IZ = 100 A, VZ = 5 V IZ,min Minimum cathode current VREF/IZ Reference voltage change with cathode current change VREF/VKA Reference voltage change with output voltage change IFB Feedback current VREF Average temperature coefficient of reference voltage (1) eN (1) 10 LM4041CQ MIN 25C TYP 1 mA < IZ < 12 mA MAX 1.233 6.2 -12 12 -18 18 -30 30 45 25C 0.7 1.5 2 4 -1.55 -2 0.7 2 6 -1.55 -2.5 100 -4 60 120 25C 20 25C 15 150 200 mV mV/V nA 20 15 100 Full range A 10 -3 60 mV 2 2.5 8 Full range 75 80 2 Full range 25C 45 80 Full range 25C 75 UNIT V -6.2 Full range IZ = 1 mA, VZ = 5 V TYP 25C 25C IZ = 1 mA MIN 1.233 Full range IZ,min < IZ < 1 mA LM4041DQ MAX Full range 25C IZ = 10 mA, VZ = 5 V ZZ TA 150 ppm/C IZ = 100 A, VZ = 5 V 25C 15 15 IZ = 1 mA, f = 120 Hz, IAC = 0.1 IZ, VZ = VREF 25C 0.3 0.3 IZ = 1 mA, f = 120 Hz, IAC = 0.1 IZ, VZ = 10 V 25C 2 2 Wideband noise IZ = 100 A, VZ = VREF, 10 Hz f 10 kHz 25C 20 20 VRMS Long-term stability of reverse breakdown voltage t = 1000 h, TA = 25C 0.1C, IZ = 100 A 25C 120 120 ppm Reverse dynamic impedance Reference voltage tolerance and average temperature coefficient change with output voltage (VZ). See Typical Characteristics. LM4041 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE www.ti.com SLCS146C - FEBRUARY 2005 - REVISED MAY 2005 TYPICAL CHARACTERISTICS 0.5 1000 IZ = 150 A VREF = 1.2 V 0.4 0.3 800 Noise Voltage (nV/Hz) Reference Voltage (V) -9.9 ppm/C 0.2 2.7 ppm/C 0.1 0 -0.1 21 ppm/C -0.2 -0.3 600 400 200 -0.4 -0.5 -40 -20 0 20 40 60 80 0 100 1 10 3 1.235 125C 1.234 0 1 -5 VZ -10 0.5 VIN (V) 1.5 Reference Voltage (V) VIN VZ (V) LM4041 (Adj) IZ = 1 mA 10 5 10k
1.2345 2 1k Figure 2. Noise Voltage vs Frequency 15 2.5 100 Frequency (Hz) Temperature (C) Figure 1. Temperature Drift for Different Average Temperature Coefficients 85C 1.2335 -40C 25C 1.233 1.2325 1.232 1.2315 -15 0 -0.5 -2 2 6 10 14 18 22 Time (s) Figure 3. Start-Up Characteristics
-20 26 1.231 1.2305 0 2 4 6 8 10 Reverse (Output) Voltage (V) Figure 4. Reference Voltage vs Reverse (Output) Voltage (for Different Temperatures) 11 LM4041 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE www.ti.com SLCS146C - FEBRUARY 2005 - REVISED MAY 2005 TYPICAL CHARACTERISTICS 1.235 100 LM4041 (Adj) IZ = 1 mA 1.2345 90 125C 85C 80 VREF Feedback Current (nA) Reference Voltage (V) 1.234 LM4041 (Adj) IZ = 1 mA 1.2335 1.233 5V 1.2325 1.232 1.2315 25C 70 -40C 60 50 40 30 10 V 20 1.231 10 1.2305 -40 -20 0 20 40 60 80 0 100 Temperature (C) 2 4 6 8 10 Reverse (Output) Voltage (V) Figure 6. Feedback Current vs Reverse (Output) Voltage (for Different Temperatures) Figure 5. Reference Voltage vs Temperature (for Different Reverse Voltages) 1000 1000 LM4041 (Adj) IZ = 1 mA IZ = 0.1 IZ Tj = 25C 100 CL = 0 F 10 10 V Impedance () Capacitor Line 100 Impedance () 0 CL = 0 F Capacitor Line LM4041 (Adj) IZ = 150 A IZ = 0.1 IZ Tj = 25C 10 V 10 5V 5V CL = 1 F CL = 1 F 1.23 V 1 1 2.5 V 1.23 V 2.5 V 0.1 0.1 100 1k 10k 100k Frequency (Hz) Figure 7. Output Impedance vs Frequency 12 1M 100 1k 10k 100k Frequency (Hz) Figure 8. Output Impedance vs Frequency 1M LM4041 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE www.ti.com SLCS146C - FEBRUARY 2005 - REVISED MAY 2005 TYPICAL CHARACTERISTICS FB Steps (V) (see Figure 12) 0 100 2 4 6 100 8 90 LM4041 (Adj) VZ = 1.23 V (nominal) 90 80 Reverse Current (A) Reverse Current (A) 80 70 60 50 40 30 70 60 50 40 30 20 20 LM4041 (Adj) IZ = 1 mA 10 10 0 0 1 2 3 4 5 6 7 8 9 10 Reverse (Output) Voltage (V) 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 Reverse (Output) Voltage (V) Figure 10. Reverse Characteristics and Minumum Operating Current Figure 9. Reverse Characteristics
1.6 0 LM4041 (Adj) VAdj = VREF + 5 mV 1.4 Output Saturation (V) 1.2 -40C 1 25C 85C 0.8 125C 0.6 0.4 0.2 0 0 1 2 3 4 5 6 7 8 9 10 11 12 Output Current (mA) Figure 11. Output Saturation vs Output Current 13 LM4041 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE www.ti.com SLCS146C - FEBRUARY 2005 - REVISED MAY 2005 APPLICATION INFORMATION RS 30 k VIN LM4041-1.2 VZ 1-Hz rate Figure 12. Startup Characteristics Test Circuit IR (+) LM4041 (Adj) (-) 2 V/step V Figure 13. Reverse Characteristics Test Circuit Output Capacitor The LM4041 does not require an output capacitor across CATHODE and ANODE for stability. However, if an output bypass capacitor is desired, the LM4041 is designed to be stable with all capacitive loads. SOT-23 and SC-70 Pin Connections There is a parasitic Schottky diode connected between pins 2 and 3 of the SOT-23 packaged device. Thus, pin 3 of the SOT-23 package must be left floating or connected to pin 2. Similarly, pin 2 of the SC-70 package also must be left floating or connected to pin 1. 14 LM4041 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE www.ti.com SLCS146C - FEBRUARY 2005 - REVISED MAY 2005 APPLICATION INFORMATION Adjustable Version The adjustable version allows VZ to be set by a user-defined resistor divider. The output voltage, VZ, is set according to the equation shown in Figure 14. VS RS VREF LM4041 VZ = VREF 1 R2 R1 + R1 - (Adjustable) R2 Figure 14. Adjustable Shunt Regulator Cathode and Load Currents In a typical shunt regulator configuration (see Figure 15), an external resistor, RS, is connected between the supply and the cathode of the LM4041. RS must be set properly, as it sets the total current available to supply the load (IL) and bias the LM4041 (IZ). In all cases, IZ must stay within a specified range for proper operation of the reference. Taking into consideration one extreme in the variation of the load and supply voltage (maximum IL and minimum VS), RS must be small enough to supply the minimum IZ required for operation of the regulator, as given by data sheet parameters. At the other extreme, maximum VS and minimum IL, RS must be large enough to limit IZ to less than its maximum recommended rating of 12 mA. RS is calculated as shown in Equation 1. VS VZ RS (I L I Z) (1) VS RS IZ + IL IL VZ IZ LM4041 Figure 15. Shunt Regulator 15 PACKAGE OPTION ADDENDUM www.ti.com 18-Nov-2005 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Eco Plan (2) Qty LM4041A12IDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041A12IDBZRG4 ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041A12IDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041A12IDBZTG4 ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041A12IDCKR ACTIVE SC70 DCK 5 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM Lead/Ball Finish MSL Peak Temp (3) LM4041A12IDCKRE4 ACTIVE SC70 DCK 5 3000 TBD Call TI Call TI LM4041A12ILP PREVIEW TO-92 LP 3 1000 TBD Call TI Call TI LM4041B12IDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041B12IDBZRG4 ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041B12IDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041B12IDBZTG4 ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041B12IDCKR ACTIVE SC70 DCK 5 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041B12IDCKRE4 ACTIVE SC70 DCK 5 3000 TBD Call TI Call TI LM4041B12ILP PREVIEW TO-92 LP 3 1000 TBD Call TI Call TI LM4041BIDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041BIDBZRG4 ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041BIDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041BIDBZTG4 ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041BIDCKR ACTIVE SC70 DCK 5 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041BIDCKRE4 ACTIVE SC70 DCK 5 3000 TBD Call TI LM4041BIDCKT ACTIVE SC70 DCK 5 250 Green (RoHS & no Sb/Br) CU NIPDAU Call TI Level-1-260C-UNLIM LM4041BIDCKTE4 ACTIVE SC70 DCK 5 250 TBD Call TI Call TI LM4041BILP PREVIEW TO-92 LP 3 1000 TBD Call TI Call TI TBD Call TI Call TI LM4041BILPR PREVIEW TO-92 LP 3 2000 LM4041C12IDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041C12IDBZRG4 ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041C12IDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041C12IDBZTG4 ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM Addendum-Page 1 PACKAGE OPTION ADDENDUM www.ti.com 18-Nov-2005 Orderable Device Status (1) Package Type Package Drawing Pins Package Eco Plan (2) Qty LM4041C12IDCKR ACTIVE SC70 DCK 5 3000 Green (RoHS & no Sb/Br) Lead/Ball Finish CU NIPDAU MSL Peak Temp (3) Level-1-260C-UNLIM LM4041C12IDCKRE4 ACTIVE SC70 DCK 5 3000 TBD Call TI Call TI LM4041C12ILP PREVIEW TO-92 LP 3 1000 TBD Call TI Call TI LM4041C12QDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041C12QDBZRG4 ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041C12QDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041C12QDBZTG4 ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041CIDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041CIDBZRG4 ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041CIDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041CIDBZTG4 ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041CIDCKR ACTIVE SC70 DCK 5 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041CIDCKRE4 ACTIVE SC70 DCK 5 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041CIDCKT ACTIVE SC70 DCK 5 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041CIDCKTE4 ACTIVE SC70 DCK 5 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041CILP PREVIEW TO-92 LP 3 1000 TBD Call TI Call TI LM4041CILPR PREVIEW TO-92 LP 3 2000 TBD Call TI Call TI LM4041CQDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041CQDBZRG4 ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041CQDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041CQDBZTG4 ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041D12IDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041D12IDBZRG4 ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041D12IDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041D12IDBZTG4 ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041D12IDCKR ACTIVE SC70 DCK 5 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041D12IDCKRE4 ACTIVE SC70 DCK 5 3000 LM4041D12QDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) Addendum-Page 2 TBD Call TI CU NIPDAU Call TI Level-1-260C-UNLIM PACKAGE OPTION ADDENDUM www.ti.com 18-Nov-2005 Orderable Device Status (1) Package Type Package Drawing Pins Package Eco Plan (2) Qty LM4041D12QDBZRG4 ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041D12QDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041D12QDBZTG4 ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041DIDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041DIDBZRG4 ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041DIDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041DIDBZTG4 ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041DIDCKR ACTIVE SC70 DCK 5 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041DIDCKRE4 ACTIVE SC70 DCK 5 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041DIDCKT ACTIVE SC70 DCK 5 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041DIDCKTE4 ACTIVE SC70 DCK 5 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041DILP PREVIEW TO-92 LP 3 1000 TBD Call TI Call TI TBD Call TI Call TI Lead/Ball Finish MSL Peak Temp (3) LM4041DILPR PREVIEW TO-92 LP 3 2000 LM4041DQDBZR ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041DQDBZRG4 ACTIVE SOT-23 DBZ 3 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041DQDBZT ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM LM4041DQDBZTG4 ACTIVE SOT-23 DBZ 3 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS) or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is Addendum-Page 3 PACKAGE OPTION ADDENDUM www.ti.com 18-Nov-2005 provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. Addendum-Page 4 MECHANICAL DATA MSOT002A - OCTOBER 1994 - REVISED NOVEMBER 2001 LP (O-PBCY-W3) PLASTIC CYLINDRICAL PACKAGE 0.205 (5,21) 0.175 (4,44) 0.165 (4,19) 0.125 (3,17) DIA 0.210 (5,34) 0.170 (4,32) Seating Plane 0.157 (4,00) MAX 0.050 (1,27) C 0.500 (12,70) MIN 0.104 (2,65) FORMED LEAD OPTION 0.022 (0,56) 0.016 (0,41) 0.016 (0,41) 0.014 (0,35) STRAIGHT LEAD OPTION D 0.135 (3,43) MIN 0.105 (2,67) 0.095 (2,41) 0.055 (1,40) 0.045 (1,14) 1 2 3 0.105 (2,67) 0.080 (2,03) 0.105 (2,67) 0.080 (2,03) 4040001-2 /C 10/01 NOTES: A. All linear dimensions are in inches (millimeters). B. This drawing is subject to change without notice. C. Lead dimensions are not controlled within this area D. FAlls within JEDEC TO -226 Variation AA (TO-226 replaces TO-92) E. Shipping Method: Straight lead option available in bulk pack only. Formed lead option available in tape & reel or ammo pack. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 1 MECHANICAL DATA MSOT002A - OCTOBER 1994 - REVISED NOVEMBER 2001 LP (O-PBCY-W3) PLASTIC CYLINDRICAL PACKAGE 0.539 (13,70) 0.460 (11,70) 1.260 (32,00) 0.905 (23,00) 0.650 (16,50) 0.610 (15,50) 0.020 (0,50) MIN 0.098 (2,50) 0.384 (9,75) 0.335 (8,50) 0.748 (19,00) 0.217 (5,50) 0.433 (11,00) 0.335 (8,50) 0.748 (19,00) 0.689 (17,50) 0.114 (2,90) 0.094 (2,40) 0.114 (2,90) 0.094 (2,40) 0.169 (4,30) 0.146 (3,70) DIA 0.266 (6,75) 0.234 (5,95) 0.512 (13,00) 0.488 (12,40) TAPE & REEL 4040001-3 /C 10/01 NOTES: A. All linear dimensions are in inches (millimeters). B. This drawing is subject to change without notice. C. Tape and Reel information for the Format Lead Option package. 2 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI's terms and conditions of sale supplied at the time of order acknowledgment. TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI's standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. 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