■ Overview
The AN7800 series and the AN7800F series are 3-pin
fixed positive output voltage regulators. Stabilized fixed
output voltage is obtained from unsta ble DC input volt-
ag e without using external components. 11 types of fix ed
output voltage are available, 5V, 6V, 7V, 8V, 9V, 10V,
12V, 15V, 18V, 20V and 24V. The y can be used widely in
power circuits with current capacity up to 1A.
■ Features
• No external components
• Output voltage:5V, 6V, 7V, 8V, 9V, 10V,
12V, 15V, 18V, 20V, 24V
• Internal short-circuit current limiting
• Internal thermal overload protection
• Output transistor safe area compensation
AN7800/AN7800F Series
3-pin Positive Output Voltage Regulator (1A Type)
Unit:mmAN7800 Series
10.4±0.5 1.4±0.1
2.9±0.1
6.7±0.258.7±0.313.6±0.25
1.4±0.25
4.5
ø3.7
10.5±0.5
JEDEC:TO-220AB (HSIP003-P-0000)
2.54 0.45
1:Input
2:Common
3:Output
2.5±0.25
+0.1
– 0.05
123
4.5±0.3
0.8±0.2
Unit:mmAN7800F Series
(4.3)
10.5±0.3 2.77±0.3
(1.73)
ø5.3
16.7±0.3
17.0±0.25
4.2±0.25
3.8±0.25
8.7±0.3
13.6±0.25 4.5±0.25
(0.4) 0.4+0.1
– 0.05
0.8±0.2 2.5±0.252.0±0.25
4.5±0.3
2.54
123
1.4±0.2
3.1±0.1
TO-220 Full Pack Package (HSIP003-P-0000A)
1:Input
2:Common
3:Output
■ Block Diagram
1
3
2
Input
Pass Tr
Output
Common
Starter Voltage
Reference
Current
Source
ErrorAmp.
+
–
Thermal
Protection
Q1
RSC
R2
R1
Current
Limiter
VI
PD
Topr
Tstg
V
V
W
˚C
˚C
■ Absolute Maximum Ratings (Ta=25˚C)
35 *1
40 *2
15 *3
10.25 *3
–30 to+80
–55 to+150
AN7800 Series
AN7800F Series
Input voltage
Power dissipation
Operating ambient temperature
Storage temperature
*1 AN7805/F, AN7806/F, AN7807/F, AN7808/F, AN7809/F, AN7810/F, AN7812/F, AN7815/F, AN7818/F
*2 AN7820/F, AN7824/F
*3 Follow the derating curve. When Tj exceeds 150˚C, the internal circuit cuts off output.
Parameter Symbol Rating Unit
VO5.2 V5
Tj=25˚C
VOV
VI=8 to 20V, IO=5mA to 1A,
Tj=0 to 125˚C, PD *
REGIN 100 mV3
VI=7.5 to 25V, Tj=25˚C
mV
REGLmV15
IO=5mA to 1.5A, Tj=25˚C
mV
IO=250 to 750mA, Tj=25˚C
VI=8 to 12V, Tj=25˚C
mA3.9
Tj=25˚C
1
Ibias
mA
VI=7.5 to 25V, Tj=25˚C
∆Ibias (IN)
mA∆Ibias (L)
µV40
IO=5mA to 1A, Tj=25˚C
Vno
dB
f=10Hz to 100kHz
1.3
0.5
50
5.25
100
50
8
62
4.8
4.75
RR
VI=8 to 18V, IO=100mA, f=120Hz
V2
IO=1A, Tj=25˚C
VDIF (min.)
mΩ17ZO
mA700
f=1kHz
IO (Short)
A2
VI=25V, Tj=25˚C
5
IO (Peak) Tj=25˚C
mV/˚C– 0.3∆VO/Ta IO=5mA, Tj=0 to 125˚C
Output voltage
Output voltage tolerance
Line regulation
Load regulation
Note 1) The specified condition Tj=25˚C means that the test should be carried out with the test time so short (within 10ms) that the
drift in characteristic value due to the rise in chip junction temperature can be ignored.
Note 2) When not specified, VI=10V, IO=500mA, CI=0.33µF and CO=0.1µF.
* AN7800 Series:15W, AN7800F Series:10.25W
Bias current
Input bias current change
Load bias current change
Output noise voltage
Ripple rejection ratio
Minimum input/output voltage difference
Output short circuit current
Output impedance
Peak output current
Output voltage temperature coefficient
■ Electrical Characteristics (Ta=25˚C)
· AN7805/7805F (5V Type)
Parameter Symbol Condition min typ max Unit
=
<
VO6.25 V6
VOV
VI=9 to 21V, IO=5mA to 1A,
Tj=0 to 125˚C, PD *
REGIN 120 mV5
VI=8.5 to 25V, Tj=25˚C
mV
REGLmV14
IO=5mA to 1.5A, Tj=25˚C
mV
IO=250 to 750mA, Tj=25˚C
VI=9 to 13V, Tj=25˚C
mA3.9
Tj=25˚C
1.5
Ibias
mA
VI=8.5 to 25V, Tj=25˚C
mA
40
IO=5mA to 1A, Tj=25˚C
Vno
dB
f=10Hz to 100kHz
1.3
0.5
60
6.3
120
60
8
59
5.75
5.7
RR
VI=9 to 19V, IO=100mA, f=120Hz
V2
IO=1A, Tj=25˚C
17ZO
mA700
f=1kHz
A2
VI=25V, Tj=25˚C
4
Tj=25˚C
– 0.4
IO=5mA, Tj=0 to 125˚C
Output voltage
Output voltage tolerance
Line regulation
Load regulation
Bias current
Input bias current change
Load bias current change
Output noise voltage
Ripple rejection ratio
Minimum input/output voltage difference
Output short circuit current
Output impedance
Peak output current
Output voltage temperature coefficient
Parameter Symbol Condition min typ max Unit
Tj=25˚C
∆Ibias (IN)
∆Ibias (L)
µV
VDIF (min.)
mΩ
IO (Short)
IO (Peak)
mV/˚C∆VO/Ta
Note 1) The specified condition Tj=25˚C means that the test should be carried out with the test time so short (within 10ms) that the
drift in characteristic value due to the rise in chip junction temperature can be ignored.
Note 2) When not specified, VI=11V, IO=500mA, CI=0.33µF and CO=0.1µF.
* AN7800 Series:15W, AN7800F Series:10.25W
■ Electrical Characteristics (Ta=25˚C)
· AN7806/7806F (6V Type)
=
<
VO7.3 V7
Tj=25˚C
VOV
VI=10 to 22V, IO=5mA to 1A,
Tj=0 to 125˚C, PD *
REGIN 140 mV5
VI=9.5 to 25V, Tj=25˚C
mV
REGLmV14
IO=5mA to 1.5A, Tj=25˚C
mV
IO=250 to 750mA, Tj=25˚C
VI=10 to 15V, Tj=25˚C
mA3.9
Tj=25˚C
1.5
Ibias
mA
VI=9.5 to 25V, Tj=25˚C
mA
46
IO=5mA to 1A, Tj=25˚C
Vno
dB
f=10Hz to 100kHz
1
0.5
70
7.4
140
70
8
57
6.7
6.6
RR
VI=10 to 20V, IO=100mA, f=120Hz
V2
IO=1A, Tj=25˚C
16ZO
mA700
f=1kHz
A2
VI=25V, Tj=25˚C
4
Tj=25˚C
– 0.5
IO=5mA, Tj=0 to 125˚C
Output voltage
Output voltage tolerance
Line regulation
Load regulation
Bias current
Input bias current change
Load bias current change
Output noise voltage
Ripple rejection ratio
Minimum input/output voltage difference
Output short circuit current
Output impedance
Peak output current
Output voltage temperature coefficient
Parameter Symbol Condition min typ max Unit
∆Ibias (IN)
∆Ibias (L)
µV
VDIF (min.)
mΩ
IO (Short)
IO (Peak)
mV/˚C∆VO/Ta
Note 1) The specified condition Tj=25˚C means that the test should be carried out with the test time so short (within 10ms) that the
drift in characteristic value due to the rise in chip junction temperature can be ignored.
Note 2) When not specified, VI=12V, IO=500mA, CI=0.33µF and CO=0.1µF.
* AN7800 Series:15W, AN7800F Series:10.25W
· AN7807/7807F (7V Type)
=
<
VO8.3 V8
Tj=25˚C
VOV
VI=11 to 23V, IO=5mA to 1A,
Tj=0 to 125˚C, PD *
REGIN 160 mV6
VI=10.5 to 25V, Tj=25˚C
mV
REGLmV12
IO=5mA to 1.5A, Tj=25˚C
mV
IO=250 to 750mA, Tj=25˚C
VI=11 to 17V, Tj=25˚C
mA3.9
Tj=25˚C
2
Ibias
mA
VI=10.5 to 25V, Tj=25˚C
mA
52
IO=5mA to 1A, Tj=25˚C
Vno
dB
f=10Hz to 100kHz
1
0.5
80
8.4
160
80
8
56
7.7
7.6
RR
VI=11.5 to 21.5V, IO=100mA, f=120Hz
V2
IO=1A, Tj=25˚C
16ZO
mA700
f=1kHz
A2
VI=25V, Tj=25˚C
4
Tj=25˚C
– 0.5
IO=5mA, Tj=0 to 125˚C
Output voltage
Output voltage tolerance
Line regulation
Load regulation
Bias current
Input bias current change
Load bias current change
Output noise voltage
Ripple rejection ratio
Minimum input/output voltage difference
Output short circuit current
Output impedance
Peak output current
Output voltage temperature coefficient
Parameter Symbol Condition min typ max Unit
∆Ibias (IN)
∆Ibias (L)
µV
VDIF (min.)
mΩ
IO (Short)
IO (Peak)
mV/˚C
∆VO/Ta
Note 1) The specified condition Tj=25˚C means that the test should be carried out with the test time so short (within 10ms) that the
drift in characteristic value due to the rise in chip junction temperature can be ignored.
Note 2) When not specified, VI=14V, IO=500mA, CI=0.33µF and CO=0.1µF.
* AN7800 Series:15W, AN7800F Series:10.25W
■ Electrical Characteristics (Ta=25˚C)
· AN7808/7808F (8V Type)
=
<
VO9.35 V9
Tj=25˚C
VOV
VI=12 to 24V, IO=5mA to 1A,
Tj=0 to 125˚C, PD *
REGIN 180 mV7
VI=11.5 to 26V, Tj=25˚C
mV
REGLmV12
IO=5mA to 1.5A, Tj=25˚C
mV
IO=250 to 750mA, Tj=25˚C
VI=12 to 18V, Tj=25˚C
mA3.9
Tj=25˚C
2
Ibias
mA
VI=11.5 to 26V, Tj=25˚C
mA
57
IO=5mA to 1A, Tj=25˚C
Vno
dB
f=10Hz to 100kHz
1
0.5
90
9.45
180
90
8
56
8.65
8.55
RR
VI=12 to 22V, IO=100mA, f=120Hz
V2
IO=1A, Tj=25˚C
16ZO
mA700
f=1kHz
A2
VI=26V, Tj=25˚C
4
Tj=25˚C
– 0.5
IO=5mA, Tj=0 to 125˚C
Output voltage
Output voltage tolerance
Line regulation
Load regulation
Bias current
Input bias current change
Load bias current change
Output noise voltage
Ripple rejection ratio
Minimum input/output voltage difference
Output short circuit current
Output impedance
Peak output current
Output voltage temperature coefficient
Parameter Symbol Condition min typ max Unit
∆Ibias (IN)
∆Ibias (L)
µV
VDIF (min.)
mΩ
IO (Short)
IO (Peak)
mV/˚C∆VO/Ta
Note 1) The specified condition Tj=25˚C means that the test should be carried out with the test time so short (within 10ms) that the
drift in characteristic value due to the rise in chip junction temperature can be ignored.
Note 2) When not specified, VI=15V, IO=500mA, CI=0.33µF and CO=0.1µF.
* AN7800 Series:15W, AN7800F Series:10.25W
· AN7809/7809F (9V Type)
=
<
VO10.4 V10
Tj=25˚C
VOV
VI=13 to 25V, IO=5mA to 1A,
Tj=0 to 125˚C, PD *
REGIN 200 mV8
VI=12.5 to 27V, Tj=25˚C
mV
REGLmV12
IO=5mA to 1.5A, Tj=25˚C
mV
IO=250 to 750mA, Tj=25˚C
VI=13 to 19V, Tj=25˚C
mA3.9
Tj=25˚C
2.5
Ibias
mA
VI=12.5 to 27V, Tj=25˚C
mA
63
IO=5mA to 1A, Tj=25˚C
Vno
dB
f=10Hz to 100kHz
1
0.5
100
10.5
200
100
8
56
9.6
9.5
RR
VI=13 to 23V, IO=100mA, f=120Hz
V2
IO=1A, Tj=25˚C
16ZO
mA700
f=1kHz
A2
VI=27V, Tj=25˚C
4
Tj=25˚C
– 0.6
IO=5mA, Tj=0 to 125˚C
Output voltage
Output voltage tolerance
Line regulation
Load regulation
Bias current
Input bias current change
Load bias current change
Output noise voltage
Ripple rejection ratio
Minimum input/output voltage difference
Output short circuit current
Output impedance
Peak output current
Output voltage temperature coefficient
Parameter Symbol Condition min typ max Unit
∆Ibias (IN)
∆Ibias (L)
VDIF (min.)
IO (Short)
IO (Peak)
mV/˚C∆VO/Ta
Note 1) The specified condition Tj=25˚C means that the test should be carried out with the test time so short (within 10ms) that the
drift in characteristic value due to the rise in chip junction temperature can be ignored.
Note 2) When not specified, VI=16V, IO=500mA, CI=0.33µF and CO=0.1µF.
* AN7800 Series:15W, AN7800F Series:10.25W
■ Electrical Characteristics (Ta=25˚C)
· AN7810/7810F (10V Type)
=
<
µV
mΩ
VO12.5 V12
Tj=25˚C
VOV
VI=15 to 27V, IO=5mA to 1A,
Tj=0 to 125˚C, PD *
REGIN 240 mV10
VI=14.5 to 30V, Tj=25˚C
mV
REGLmV12
IO=5mA to 1.5A, Tj=25˚C
mV
IO=250 to 750mA, Tj=25˚C
VI=16 to 22V, Tj=25˚C
mA4
Tj=25˚C
3
Ibias
mA
VI=14.5 to 30V, Tj=25˚C
mA
75
IO=5mA to 1A, Tj=25˚C
Vno
dB
f=10Hz to 100kHz
1
0.5
120
12.6
240
120
8
55
11.5
11.4
RR
VI=15 to 25V, IO=100mA, f=120Hz
V2
IO=1A, Tj=25˚C
18ZO
mA700
f=1kHz
A2
VI=30V, Tj=25˚C
4
Tj=25˚C
– 0.8
IO=5mA, Tj=0 to 125˚C
Output voltage
Output voltage tolerance
Line regulation
Load regulation
Bias current
Input bias current change
Load bias current change
Output noise voltage
Ripple rejection ratio
Minimum input/output voltage difference
Output short circuit current
Output impedance
Peak output current
Output voltage temperature coefficient
Parameter Symbol Condition min typ max Unit
∆Ibias (IN)
∆Ibias (L)
µV
VDIF (min.)
mΩ
IO (Short)
IO (Peak)
mV/˚C∆VO/Ta
Note 1) The specified condition Tj=25˚C means that the test should be carried out with the test time so short (within 10ms) that the
drift in characteristic value due to the rise in chip junction temperature can be ignored.
Note 2) When not specified, VI=19V, IO=500mA, CI=0.33µF and CO=0.1µF.
* AN7800 Series:15W, AN7800F Series:10.25W
· AN7812/7812F (12V Type)
=
<
VO15.6 V15
Tj=25˚C
VOV
VI=18 to 30V, IO=5mA to 1A,
Tj=0 to 125˚C, PD *
REGIN 300 mV11
VI=17.5 to 30V, Tj=25˚C
mV
REGLmV12
IO=5mA to 1.5A, Tj=25˚C
mV
IO=250 to 750mA, Tj=25˚C
VI=20 to 26V, Tj=25˚C
mA4
Tj=25˚C
3
Ibias
mA
VI=17.5 to 30V, Tj=25˚C
mA
90
IO=5mA to 1A, Tj=25˚C
Vno
dB
f=10Hz to 100kHz
1
0.5
150
15.75
300
150
8
54
14.4
14.25
RR VI=18.5 to 28.5V, f=120Hz
V2
IO=1A, Tj=25˚C
19ZO
mA700
f=1kHz
A2
VI=30V, Tj=25˚C
4
Tj=25˚C
–1
IO=5mA, Tj=0 to 125˚C
Output voltage
Output voltage tolerance
Line regulation
Load regulation
Bias current
Input bias current change
Load bias current change
Output noise voltage
Ripple rejection ratio
Minimum input/output voltage difference
Output short circuit current
Output impedance
Peak output current
Output voltage temperature coefficient
Parameter Symbol Condition min typ max Unit
∆Ibias (IN)
∆Ibias (L)
µV
VDIF (min.)
mΩ
IO (Short)
IO (Peak)
mV/˚C∆VO/Ta
Note 1) The specified condition Tj=25˚C means that the test should be carried out with the test time so short (within 10ms) that the
drift in characteristic value due to the rise in chip junction temperature can be ignored.
Note 2) When not specified, VI=23V, IO=500mA, CI=0.33µF and CO=0.1µF.
* AN7800 Series:15W, AN7800F Series:10.25W
■ Electrical Characteristics (Ta=25˚C)
· AN7815/7815F (15V Type)
=
<
VO18.7 V18
Tj=25˚C
VOV
VI=21 to 33V, IO=5mA to 1A,
Tj=0 to 125˚C, PD *
REGIN 360 mV14
VI=21 to 33V, Tj=25˚C
mV
REGLmV12
IO=5mA to 1.5A, Tj=25˚C
mV
IO=250 to 750mA, Tj=25˚C
VI=24 to 30V, Tj=25˚C
mA4.1
Tj=25˚C
4
Ibias
mA
VI=21 to 33V, Tj=25˚C
mA
110
IO=5mA to 1A, Tj=25˚C
Vno
dB
f=10Hz to 100kHz
1
0.5
180
18.9
360
180
8
53
17.3
17.1
RR
VI=22 to 32V, IO=100mA, f=120Hz
V2
IO=1A, Tj=25˚C
16ZO
mA700
f=1kHz
A2
VI=35V, Tj=25˚C
4
Tj=25˚C
–1.1
IO=5mA, Tj=0 to 125˚C
Output voltage
Output voltage tolerance
Line regulation
Load regulation
Bias current
Input bias current change
Load bias current change
Output noise voltage
Ripple rejection ratio
Minimum input/output voltage difference
Output short circuit current
Output impedance
Peak output current
Output voltage temperature coefficient
Parameter Symbol Condition min typ max Unit
∆Ibias (IN)
∆Ibias (L)
µV
VDIF (min.)
mΩ
IO (Short)
IO (Peak)
mV/˚C∆VO/Ta
Note 1) The specified condition Tj=25˚C means that the test should be carried out with the test time so short (within 10ms) that the
drift in characteristic value due to the rise in chip junction temperature can be ignored.
Note 2) When not specified, VI=27V, IO=500mA, CI=0.33µF and CO=0.1µF.
* AN7800 Series:15W, AN7800F Series:10.25W
· AN7818/7818F (18V Type)
=
<
VO20.8 V20
Tj=25˚C
VOV
VI=24 to 35V, IO=5mA to 1A,
Tj=0 to 125˚C, PD *
REGIN 400 mV15
VI=23 to 35V, Tj=25˚C
mV
REGLmV12
IO=5mA to 1.5A, Tj=25˚C
mV
IO=250 to 750mA, Tj=25˚C
VI=26 to 32V, Tj=25˚C
mA4.1
Tj=25˚C
5
Ibias
mA
VI=23 to 35V, Tj=25˚C
mA
110
IO=5mA to 1A, Tj=25˚C
Vno
dB
f=10Hz to 100kHz
1
0.5
200
21
400
200
8
53
19.2
19
RR
VI=24 to 34V, IO=100mA, f=120Hz
V2
IO=1A, Tj=25˚C
22ZO
mA700
f=1kHz
A2
VI=35V, Tj=25˚C
4
Tj=25˚C
–1.2
IO=5mA, Tj=0 to 125˚C
Output voltage
Output voltage Tolerance
Line regulation
Load regulation
Bias current
Input bias current change
Load bias current change
Output noise voltage
Ripple rejection ratio
Minimum input/output voltage difference
Output short circuit current
Output impedance
Peak output current
Output voltage temperature coefficient
Parameter Symbol Condition min typ max Unit
∆Ibias (IN)
∆Ibias (L)
VDIF (min.)
IO (Short)
IO (Peak)
mV/˚C∆VO/Ta
Note 1) The specified condition Tj=25˚C means that the test should be carried out with the test time so short (within 10ms) that the
drift in characteristic value due to the rise in chip junction temperature can be ignored.
Note 2) When not specified, VI=29V, IO=500mA, CI=0.33µF and CO=0.1µF.
* AN7800 Series:15W, AN7800F Series:10.25W
■ Electrical Characteristics (Ta=25˚C)
· AN7820/7820F (20V Type)
=
<
µV
mΩ
VO25 V24
Tj=25˚C
VOV
VI=28 to 38V, IO=5mA to 1A,
Tj=0 to 125˚C, PD *
REGIN 480 mV18
VI=27 to 38V, Tj=25˚C
mV
REGLmV12
IO=5mA to 1.5A, Tj=25˚C
mV
IO=250 to 750mA, Tj=25˚C
VI=30 to 36V, Tj=25˚C
mA4.1
Tj=25˚C
6
Ibias
mA
VI=27 to 38V, Tj=25˚C
mA
170
IO=5mA to 1A, Tj=25˚C
Vno
dB
f=10Hz to 100kHz
1
0.5
240
25.2
480
240
8
50
23
22.8
RR
VI=28 to 38V, IO=100mA, f=120Hz
V2
IO=1A, Tj=25˚C
28ZO
mA700
f=1kHz
A2
VI=38V, Tj=25˚C
4
Tj=25˚C
–1.4
IO=5mA, Tj=0 to 125˚C
Output voltage
Output voltage tolerance
Line regulation
Load regulation
Bias current
Input bias current change
Load bias current change
Output noise voltage
Ripple rejection ratio
Minimum input/output voltage difference
Output short circuit current
Output impedance
Peak output current
Output voltage temperature coefficient
· AN7824/7824F (24V Type)
Parameter Symbol Condition min typ max Unit
∆Ibias (IN)
∆Ibias (L)
VDIF (min.)
IO (Short)
IO (Peak)
mV/˚C∆VO/Ta
Note 1) The specified condition Tj=25˚C means that the test should be carried out with the test time so short (within 10ms) that the
drift in characteristic value due to the rise in chip junction temperature can be ignored.
Note 2) When not specified, VI=33V, IO=500mA, CI=0.33µF and CO=0.1µF.
* AN7800 Series:15W, AN7800F Series:10.25W
=
<
µV
mΩ
■ Characteristic Curve
■ Applica tion Circuit
VO
VO
VO
0.33µF0.1µF
VI
VI
IOIbias
VO = VO + Ibias + R1
R2
VO
3Ω
Q1
AN7800
AN7800F
AN7800
AN7800F
1) Current Boost Circuit 2) Adjustable Output Regulator
13
2
13
2R
2
R
1
7
6
5
4
3
2
1
0
0 0.6 1.2 0.8 2.4
Output Current IO (A)
Output Voltage VO (V)
Current Limiting Characteristic
2.4
2.0
1.6
1.2
0.8
0.4
0
–40 0 40 80 120 160
Junction Temperature Tj (˚C)
Minimum Input/Output Voltage Difference VDIF (min.) (V)
VDIF (min.) –Tj
16
14
12
10
8
6
4
2
00 40 80 120 160
Ambient Temperature Ta (˚C)
Power Dissipation PD (W)
PD –Ta (AN7800F Series)
IO=1A
500mA
200mA
20mA
0mA
024
AN7805
6810
Time t (µs)
10
0
–10
–20
20
15
10
5
Output Voltage Deviation (mV)
Input Voltage VI (V)
Input Transient Response
01020
AN7805
30 40 50
Time t (µs)
1
0
–1
–2
2
1
0
Output Voltage Deviation (V)
Load Current IO (A)
Load Transient Response
VI=10V
Tj=25˚C
AN7805
16
14
12
10
8
6
4
2
00 40 80 120 160
Ambient Temperature Ta (˚C)
Power Dissipation PD (W)
PD –Ta (AN7800 Series)
(1) Infinite Heat Sink
(2)
5˚C/W Heat Sink
(3) 15
˚C
/W Heat Sink
(4)
No Heat Sink
(1) Infinite Heat Sink
(2)
5˚C/W Heat Sink
(3) 15
˚C
/W Heat Sink
(4)
No Heat Sink
(1)
(2)
(3)
(4)
(1)
(2)
(3)
(4)
CI is set when the input line is long.
CO improves the transient response.
CO
CI
Input Output
AN7800
AN7800F
Common
13
2
■ Basic Regulator Circuit
