Page 1
AN7800/AN7800F Series
3-pin Positive Output Voltage Regulator (1A Type)
■ Overview
The AN7800 series and the AN7800F series are 3-pin
fixed positive output voltage regulators. Stabilized fixed
output voltage is obtained from unstable DC input voltage without using external components. 11 types of fixed
output voltage are available, 5V, 6V, 7V, 8V, 9V, 10V,
12V, 15V , 18V, 20V and 24V. They 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
10.5±0.5
10.4±0.5
16.7±0.3
ø3.7
6.7±0.258.7±0.313.6±0.25
4.5
1.4±0.25
0.8±0.2
2.54
0.45
123
JEDEC:TO-220AB (HSIP003-P-0000)
10.5±0.3
ø5.3
(4.3)
3.1±0.1
4.5±0.25
17.0±0.25
+0.1
– 0.05
4.5±0.3
(1.73)
1.4±0.1
2.9±0.1
2.5±0.25
1:Input
2:Common
3:Output
Unit:mmAN7800 Series
Unit:mmAN7800F Series
2.77±0.3
4.2±0.25
3.8±0.25
8.7±0.3
■ Block Diagram
Starter
Voltage
Reference
Current
Source
+
ErrorAmp.
–
13.6±0.25
TO-220 Full Pack Package (HSIP003-P-0000A)
Pass Tr
Current
Limiter
Thermal
Protection
2.54
123
(0.4)
0.8±0.2
1.4±0.2
Q
1
R
SC
R
2
R
1
1
3
2
Input
Output
Common
4.5±0.3
+0.1
0.4
– 0.05
2.5±0.252.0±0.25
1:Input
2:Common
3:Output
Page 2
■ Absolute Maximum Ratings (Ta=25˚C)
Parameter Symbol Rating Unit
1
*
Input voltage
Power dissipation
AN7800 Series
AN7800F Series
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 T
exceeds 150˚C, the internal circuit cuts off output.
j
V
I
P
D
T
opr
T
stg
35
2
*
40
3
*
15
*
10.25
–30 to+80
–55 to+150
3
■ Electrical Characteristics (Ta=25˚C)
AN7805/7805F (5V Type)
·
Parameter Symbol Condition min typ max Unit
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 impedance
Output short circuit current
Peak output current
REG
REG
∆I
V
DIF (min.)
I
O (Short)
I
O (Peak)
V
O
V
O
I
bias
bias (IN)
bias (L)
V
no
RR
O
Output voltage temperature coefficient
Note 1) The specified condition T
=25˚C means that the test should be carried out with the test time so short (within 10ms) that the
j
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
=25˚C
T
j
=8 to 20V, IO=5mA to 1A,
V
I
=0 to 125˚C, P
T
j
=7.5 to 25V, Tj=25˚C
V
I
IN
=8 to 12V, Tj=25˚C
V
I
=5mA to 1.5A, Tj=25˚C
I
O
L
=250 to 750mA, Tj=25˚C
I
O
=25˚C
T
j
=7.5 to 25V, Tj=25˚C
V
I
=5mA to 1A, Tj=25˚C
I
O
f=10Hz to 100kHz
VI=8 to 18V, IO=100mA, f=120Hz
=1A, Tj=25˚C
I
O
f=1kHz
=25V, Tj=25˚C
V
I
Tj=25˚C
=5mA, Tj=0 to 125˚C
I
O
D
<
*
=
4.8
4.75
62
V
V
W
˚C
˚C
5.2 V5
5.25
V
100 mV3
50
50
1.3
0.5
mV
mV15
mV
mA3.9
8
mA
mA∆I
1
100
5
µV40
dB
V2
mΩ17Z
mA700
A2
mV/˚C– 0.3∆VO/Ta
Page 3
■ Electrical Characteristics (Ta=25˚C)
AN7806/7806F (6V Type)
·
Parameter Symbol Condition min typ max Unit
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
REG
REG
∆I
∆I
V
DIF (min.)
V
V
I
bias
bias (IN)
bias (L)
V
RR
Output impedance
Output short circuit current
Peak output current
I
O (Short)
I
O (Peak)
Output voltage temperature coefficient
Note 1) The specified condition T
=25˚C means that the test should be carried out with the test time so short (within 10ms) that the
j
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
T
=25˚C
O
O
no
j
=9 to 21V, IO=5mA to 1A,
V
I
=0 to 125˚C, P
T
j
=8.5 to 25V, Tj=25˚C
V
I
IN
=9 to 13V, Tj=25˚C
V
I
=5mA to 1.5A, Tj=25˚C
I
O
L
=250 to 750mA, Tj=25˚C
I
O
=25˚C
T
j
=8.5 to 25V, Tj=25˚C
V
I
=5mA to 1A, Tj=25˚C
I
O
f=10Hz to 100kHz
VI=9 to 19V, IO=100mA, f=120Hz
=1A, Tj=25˚C
I
O
f=1kHz
O
=25V, Tj=25˚C
V
I
Tj=25˚C
IO=5mA, Tj=0 to 125˚C
D
<
*
=
5.75
5.7
59
1.5
– 0.4
6.25 V6
6.3
V
120 mV5
mV
60
60
1.3
0.5
mV14
mV
mA3.9
8
mA
mA
µV
120
4
40
dB
V2
17Z
mΩ
mA700
A2
mV/˚C∆VO/Ta
AN7807/7807F (7V Type)
·
Parameter Symbol Condition min typ max Unit
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 impedance
Output short circuit current
Peak output current
Output voltage temperature coefficient
Note 1) The specified condition T
=25˚C means that the test should be carried out with the test time so short (within 10ms) that the
j
REG
REG
∆I
∆I
V
DIF (min.)
I
O (Short)
I
O (Peak)
V
O
V
O
I
bias
bias (IN)
bias (L)
V
no
RR
O
=25˚C
T
j
=10 to 22V, IO=5mA to 1A,
V
I
=0 to 125˚C, P
T
j
=9.5 to 25V, Tj=25˚C
V
I
IN
=10 to 15V, Tj=25˚C
V
I
=5mA to 1.5A, Tj=25˚C
I
O
L
=250 to 750mA, Tj=25˚C
I
O
=25˚C
T
j
=9.5 to 25V, Tj=25˚C
V
I
=5mA to 1A, Tj=25˚C
I
O
f=10Hz to 100kHz
VI=10 to 20V, IO=100mA, f=120Hz
=1A, Tj=25˚C
I
O
f=1kHz
=25V, Tj=25˚C
V
I
Tj=25˚C
IO=5mA, Tj=0 to 125˚C
D
<
*
=
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
6.7
6.6
7.3 V7
7.4
V
140 mV5
1.5
140
4
46
57
70
70
0.5
mV
mV14
mV
mA3.9
8
mA
1
mA
µV
dB
V2
16Z
mΩ
mA700
A2
– 0.5
mV/˚C∆VO/Ta
Page 4
■ Electrical Characteristics (Ta=25˚C)
AN7808/7808F (8V Type)
·
Parameter Symbol Condition min typ max Unit
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 impedance
Output short circuit current
Peak output current
Output voltage temperature coefficient
Note 1) The specified condition T
=25˚C means that the test should be carried out with the test time so short (within 10ms) that the
j
V
O
V
O
REG
REG
I
bias
∆I
bias (IN)
∆I
bias (L)
V
no
RR
V
DIF (min.)
O
I
O (Short)
I
O (Peak)
∆VO/Ta
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
=25˚C
T
j
=11 to 23V, IO=5mA to 1A,
V
I
=0 to 125˚C, P
T
j
=10.5 to 25V, Tj=25˚C
V
I
IN
=11 to 17V, Tj=25˚C
V
I
=5mA to 1.5A, Tj=25˚C
I
O
L
=250 to 750mA, Tj=25˚C
I
O
=25˚C
T
j
=10.5 to 25V, Tj=25˚C
V
I
=5mA to 1A, Tj=25˚C
I
O
D
f=10Hz to 100kHz
VI=11.5 to 21.5V, IO=100mA, f=120Hz
=1A, Tj=25˚C
I
O
f=1kHz
=25V, Tj=25˚C
V
I
Tj=25˚C
IO=5mA, Tj=0 to 125˚C
<
*
=
7.7
7.6
8.3 V8
8.4
V
160 mV6
80
80
0.5
mV
mV12
mV
mA3.9
8
mA
1
mA
µV
dB
2
160
4
52
56
V2
16Z
mΩ
mA700
A2
– 0.5
mV/˚C
AN7809/7809F (9V Type)
·
Parameter Symbol Condition min typ max Unit
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 impedance
Output short circuit current
Peak output current
Output voltage temperature coefficient
Note 1) The specified condition T
=25˚C means that the test should be carried out with the test time so short (within 10ms) that the
j
REG
REG
∆I
∆I
V
DIF (min.)
I
O (Short)
I
O (Peak)
V
O
V
O
I
bias
bias (IN)
bias (L)
V
no
RR
O
=25˚C
T
j
=12 to 24V, IO=5mA to 1A,
V
I
=0 to 125˚C, P
T
j
=11.5 to 26V, Tj=25˚C
V
I
IN
=12 to 18V, Tj=25˚C
V
I
=5mA to 1.5A, Tj=25˚C
I
O
L
=250 to 750mA, Tj=25˚C
I
O
=25˚C
T
j
=11.5 to 26V, Tj=25˚C
V
I
=5mA to 1A, Tj=25˚C
I
O
f=10Hz to 100kHz
VI=12 to 22V, IO=100mA, f=120Hz
=1A, Tj=25˚C
I
O
f=1kHz
=26V, Tj=25˚C
V
I
Tj=25˚C
IO=5mA, Tj=0 to 125˚C
D
<
*
=
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
8.65
8.55
56
– 0.5
9.35 V9
9.45
V
180 mV7
90
90
0.5
mV
mV12
mV
mA3.9
8
mA
1
mA
µV
2
180
4
57
dB
V2
16Z
mΩ
mA700
A2
mV/˚C∆VO/Ta
Page 5
■ Electrical Characteristics (Ta=25˚C)
AN7810/7810F (10V Type)
·
Parameter Symbol Condition min typ max Unit
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 impedance
Output short circuit current
Peak output current
REG
REG
∆I
∆I
V
DIF (min.)
I
O (Short)
I
O (Peak)
V
O
V
O
I
bias
bias (IN)
bias (L)
V
no
RR
O
Output voltage temperature coefficient
Note 1) The specified condition T
=25˚C means that the test should be carried out with the test time so short (within 10ms) that the
j
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
=25˚C
T
j
=13 to 25V, IO=5mA to 1A,
V
I
=0 to 125˚C, P
T
j
=12.5 to 27V, Tj=25˚C
V
I
IN
=13 to 19V, Tj=25˚C
V
I
=5mA to 1.5A, Tj=25˚C
I
O
L
=250 to 750mA, Tj=25˚C
I
O
=25˚C
T
j
=12.5 to 27V, Tj=25˚C
V
I
=5mA to 1A, Tj=25˚C
I
O
f=10Hz to 100kHz
VI=13 to 23V, IO=100mA, f=120Hz
=1A, Tj=25˚C
I
O
f=1kHz
=27V, Tj=25˚C
V
I
Tj=25˚C
IO=5mA, Tj=0 to 125˚C
D
<
*
=
9.6
9.5
10.4 V10
10.5
V
200 mV8
0.5
mV
mV12
mV
mA3.9
8
mA
1
mA
µV
dB
2.5
100
200
100
4
63
56
V2
16Z
mΩ
mA700
A2
– 0.6
mV/˚C∆VO/Ta
AN7812/7812F (12V Type)
·
Parameter Symbol Condition min typ max Unit
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 impedance
Output short circuit current
Peak output current
Output voltage temperature coefficient
Note 1) The specified condition T
=25˚C means that the test should be carried out with the test time so short (within 10ms) that the
j
REG
REG
∆I
bias (IN)
∆I
V
DIF (min.)
I
O (Short)
I
O (Peak)
V
O
V
O
I
bias
bias (L)
V
no
RR
O
=25˚C
T
j
=15 to 27V, IO=5mA to 1A,
V
I
=0 to 125˚C, P
T
j
=14.5 to 30V, Tj=25˚C
V
I
IN
=16 to 22V, Tj=25˚C
V
I
=5mA to 1.5A, Tj=25˚C
I
O
L
=250 to 750mA, Tj=25˚C
I
O
=25˚C
T
j
=14.5 to 30V, Tj=25˚C
V
I
=5mA to 1A, Tj=25˚C
I
O
D
f=10Hz to 100kHz
VI=15 to 25V, IO=100mA, f=120Hz
=1A, Tj=25˚C
I
O
f=1kHz
=30V, Tj=25˚C
V
I
Tj=25˚C
IO=5mA, Tj=0 to 125˚C
<
*
=
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
11.5
11.4
55
– 0.8
12.5 V12
12.6
V
240 mV10
0.5
mV
mV12
mV
mA4
8
mA
1
mA
µV
3
120
240
120
4
75
dB
V2
18Z
mΩ
mA700
A2
mV/˚C∆VO/Ta
Page 6
■ Electrical Characteristics (Ta=25˚C)
AN7815/7815F (15V Type)
·
Parameter Symbol Condition min typ max Unit
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 impedance
Output short circuit current
Peak output current
REG
REG
∆I
∆I
V
DIF (min.)
I
O (Short)
I
O (Peak)
V
O
V
O
I
bias
bias (IN)
bias (L)
V
no
RR
O
Output voltage temperature coefficient
Note 1) The specified condition T
=25˚C means that the test should be carried out with the test time so short (within 10ms) that the
j
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
=25˚C
T
j
=18 to 30V, IO=5mA to 1A,
V
I
T
=0 to 125˚C, P
j
=17.5 to 30V, Tj=25˚C
V
I
IN
=20 to 26V, Tj=25˚C
V
I
=5mA to 1.5A, Tj=25˚C
I
O
L
=250 to 750mA, Tj=25˚C
I
O
=25˚C
T
j
=17.5 to 30V, Tj=25˚C
V
I
=5mA to 1A, Tj=25˚C
I
O
f=10Hz to 100kHz
=18.5 to 28.5V, f=120Hz
V
I
=1A, Tj=25˚C
I
O
f=1kHz
=30V, Tj=25˚C
V
I
Tj=25˚C
IO=5mA, Tj=0 to 125˚C
D
<
*
=
14.4
14.25
15.6 V15
15.75
V
300 mV11
0.5
mV
mV12
mV
mA4
8
mA
1
mA
µV
dB
3
150
300
150
4
90
54
V2
19Z
mΩ
mA700
A2
–1
mV/˚C∆VO/Ta
AN7818/7818F (18V Type)
·
Parameter Symbol Condition min typ max Unit
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 impedance
Output short circuit current
Peak output current
Output voltage temperature coefficient
Note 1) The specified condition T
=25˚C means that the test should be carried out with the test time so short (within 10ms) that the
j
REG
REG
∆I
bias (IN)
∆I
V
DIF (min.)
I
O (Short)
I
O (Peak)
V
V
I
bias
bias (L)
V
no
RR
O
O
O
=25˚C
T
j
=21 to 33V, IO=5mA to 1A,
V
I
=0 to 125˚C, P
T
j
=21 to 33V, Tj=25˚C
V
I
IN
=24 to 30V, Tj=25˚C
V
I
=5mA to 1.5A, Tj=25˚C
I
O
L
=250 to 750mA, Tj=25˚C
I
O
=25˚C
T
j
=21 to 33V, Tj=25˚C
V
I
=5mA to 1A, Tj=25˚C
I
O
f=10Hz to 100kHz
VI=22 to 32V, IO=100mA, f=120Hz
=1A, Tj=25˚C
I
O
f=1kHz
=35V, Tj=25˚C
V
I
Tj=25˚C
IO=5mA, Tj=0 to 125˚C
D
<
*
=
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
17.3
17.1
53
110
–1.1
18.7 V18
18.9
V
360 mV14
0.5
mV
mV12
mV
mA4.1
8
mA
1
mA
4
180
360
180
4
µV
dB
V2
16Z
mΩ
mA700
A2
mV/˚C∆VO/Ta
Page 7
■ Electrical Characteristics (Ta=25˚C)
AN7820/7820F (20V Type)
·
Parameter Symbol Condition min typ max Unit
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 impedance
Output short circuit current
Peak output current
REG
REG
I
∆I
∆I
V
RR
V
DIF (min.)
I
O (Short)
I
O (Peak)
V
O
V
O
bias
bias (IN)
bias (L)
no
O
Output voltage temperature coefficient
Note 1) The specified condition T
=25˚C means that the test should be carried out with the test time so short (within 10ms) that the
j
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
=25˚C
T
j
=24 to 35V, IO=5mA to 1A,
V
I
=0 to 125˚C, P
T
j
=23 to 35V, Tj=25˚C
V
I
IN
=26 to 32V, Tj=25˚C
V
I
=5mA to 1.5A, Tj=25˚C
I
O
L
=250 to 750mA, Tj=25˚C
I
O
=25˚C
T
j
=23 to 35V, Tj=25˚C
V
I
=5mA to 1A, Tj=25˚C
I
O
D
f=10Hz to 100kHz
VI=24 to 34V, IO=100mA, f=120Hz
=1A, Tj=25˚C
I
O
f=1kHz
=35V, Tj=25˚C
V
I
Tj=25˚C
IO=5mA, Tj=0 to 125˚C
<
*
=
19.2
19
53
110
22Z
–1.2
20.8 V20
21
V
400 mV15
0.5
mV
mV12
mV
mA4.1
8
mA
1
mA
5
200
400
200
4
µV
dB
V2
mΩ
mA700
A2
mV/˚C∆VO/Ta
AN7824/7824F (24V Type)
·
Parameter Symbol Condition min typ max Unit
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 impedance
Output short circuit current
Peak output current
Output voltage temperature coefficient
Note 1) The specified condition T
=25˚C means that the test should be carried out with the test time so short (within 10ms) that the
j
REG
REG
∆I
∆I
V
DIF (min.)
I
O (Short)
I
O (Peak)
V
O
V
O
I
bias
bias (IN)
bias (L)
V
no
RR
O
=25˚C
T
j
=28 to 38V, IO=5mA to 1A,
V
I
=0 to 125˚C, P
T
j
=27 to 38V, Tj=25˚C
V
I
IN
=30 to 36V, Tj=25˚C
V
I
=5mA to 1.5A, Tj=25˚C
I
O
L
=250 to 750mA, Tj=25˚C
I
O
=25˚C
T
j
=27 to 38V, Tj=25˚C
V
I
=5mA to 1A, Tj=25˚C
I
O
f=10Hz to 100kHz
VI=28 to 38V, IO=100mA, f=120Hz
=1A, Tj=25˚C
I
O
f=1kHz
=38V, Tj=25˚C
V
I
Tj=25˚C
IO=5mA, Tj=0 to 125˚C
D
<
*
=
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
23
22.8
50
170
28Z
–1.4
25 V24
25.2
V
480 mV18
0.5
mV
mV12
mV
mA4.1
8
mA
1
mA
6
240
480
240
4
µV
dB
V2
mΩ
mA700
A2
mV/˚C∆VO/Ta
Page 8
■ Characteristic Curve
PD –Ta (AN7800 Series)
16
(1)
14
12
(W)
D
Power Dissipation P
(2)
10
8
6
(3)
4
2
(4)
0
0 40 80 120 160
Ambient Temperature Ta (˚C)
(1) Infinite Heat Sink
5˚C/W Heat Sink
(2)
(3) 15˚C/W Heat Sink
No Heat Sink
(4)
Input Transient Response
AN7805
10
0
–10
(W)
D
Power Dissipation P
20
I (V)
15
10
Input Voltage V
5
PD –Ta (AN7800F Series)
16
14
12
10
(1)
8
(2)
6
4
(3)
2
(4)
0
0 40 80 120 160
Ambient Temperature Ta (˚C)
(1) Infinite Heat Sink
5˚C/W Heat Sink
(2)
(3) 15˚C/W Heat Sink
No Heat Sink
(4)
Load Transient Response
AN7805
1
0
–1
V
(V)
2.4
DIF (min.)
2.0
1.6
1.2
0.8
0.4
0
–40 0 40 80 120 160
Minimum Input/Output Voltage Difference V
DIF (min.) –Tj
Junction Temperature Tj (˚C)
Current Limiting Characteristic
7
(A)
2
O
1
0
Load Current I
VI=10V
=25˚C
T
j
6
AN7805
5
(V)
O
4
3
2
Output Voltage V
1
IO=1A
500mA
200mA
20mA
0mA
–20
024
Output Voltage Deviation (mV)
6810
Time t (µs)
■ Basic Regulator Circuit
Input Output
CI is set when the input line is long.
CO improves the transient response.
13
AN7800
AN7800F
C
I
2
Common
C
–2
01020
Output Voltage Deviation (V)
30 40 50
Time t (µs)
0
0 0.6 1.2 0.8 2.4
Output Current IO (A)
■ Applica tion Circuit
1) Current Boost Circuit 2) Adjustable Output Regulator
V
V
O
V
O
R
2
O
R
2
R
1
1
V
I
1
V
I
Q
1
0.33µF
3Ω
13
AN7800
AN7800F
2
O
I
O
0.1µF
V
O
AN7800
AN7800F
VO = VO + I
3
2
I
bias
bias
+ R
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