Voltage Regulators
I
Electrical Characteristics at T
a
=
25°C (continued)
•
AN7820, 7820F (20V type)
Parameter
Output voltage
Output voltage tolerance
Line regulation
Load regulation
Bias current
Bias current fluctuation to input
Bias current fluctuation to load
Output noise voltage
Ripple rejection ratio
Minimum input/output voltage difference
Output impedance
Output short-circuit current
Peak output current
Output voltage temperature coefficient
Symbol
V
O
V
O
REG
IN
REG
L
I
Bias
∆I
Bias(IN)
∆I
Bias(L)
V
no
RR
V
DIF(min)
Z
O
I
O(Short)
I
O(Peak)
∆V
O
/T
a
Conditions
AN78xx/AN78xxF Series
Min
19.2
19
Typ
20
Max
20.8
21
Unit
V
V
mV
mV
mV
mV
mA
mA
mA
µV
dB
V
mΩ
mA
A
mV/°C
T
j
=
25°C
V
I
=
24 to 35V, I
O
=
5mA to 1A,
T
j
=
0 to 125°C, P
D
≤
*
V
I
=
23 to 35V, T
j
=
25°C
V
I
=
26 to 32V, T
j
=
25°C
I
O
=
5mA to 1.5A, T
j
=
25°C
I
O
=
250 to 750mA, T
j
=
25°C
T
j
=
25°C
V
I
=
23 to 35V, T
j
=
25°C
I
O
=
5mA to 1A, T
j
=
25°C
f
=
10Hz to 100kHz
V
I
=
24 to 34V, I
O
=
100mA, f
=
120Hz
I
O
=
1A, T
j
=
25°C
f
=
1kHz
V
I
=
35V, T
j
=
25°C
T
j
=
25°C
I
O
=
5mA, T
j
=
0 to 125°C
15
5
12
4
4.1
400
200
400
200
8
1
0.5
110
53
2
22
700
2
−1.2
Note 1) The specified condition T
j
=
25°C means that the test should be carried out within so short a test time (within 10ms) that the
characteristic value drift due to the chip junction temperature rise can be ignored.
Note 2) Unless otherwise specified, V
I
=
29V, I
O
=
500mA, C
I
=
0.33µF and C
O
=
0.1µF.
* AN78xx series: 15W, AN78xxF series: 10.25W
•
AN7824, 7824F (24V type)
Parameter
Output voltage
Output voltage tolerance
Line regulation
Load regulation
Bias current
Bias current fluctuation to input
Bias current fluctuation to load
Output noise voltage
Ripple rejection ratio
Minimum input/output voltage difference
Output impedance
Output short-circuit current
Peak output current
Output voltage temperature coefficient
Symbol
V
O
V
O
REG
IN
REG
L
I
Bias
∆I
Bias(IN)
∆I
Bias(L)
V
no
RR
V
DIF(min)
Z
O
I
O(Short)
I
O(Peak)
∆V
O
/T
a
Conditions
T
j
=
25°C
V
I
=
28 to 38V, I
O
=
5mA to 1A,
T
j
=
0 to 125°C, P
D
≤
*
V
I
=
27 to 38V, T
j
=
25°C
V
I
=
30 to 36V, T
j
=
25°C
I
O
=
5mA to 1.5A, T
j
=
25°C
I
O
=
250 to 750mA, T
j
=
25°C
T
j
=
25°C
V
I
=
27 to 38V, T
j
=
25°C
I
O
=
5mA to 1A, T
j
=
25°C
f
=
10Hz to 100kHz
V
I
=
28 to 38V, I
O
=
100mA, f
=
120Hz
I
O
=
1A, T
j
=
25°C
f
=
1kHz
V
I
=
38V, T
j
=
25°C
T
j
=
25°C
I
O
=
5mA, T
j
=
0 to 125°C
50
2
28
700
2
−1.4
170
Min
23
22.8
18
6
12
4
4.1
Typ
24
Max
25
25.2
480
240
480
240
8
1
0.5
Unit
V
V
mV
mV
mV
mV
mA
mA
mA
µV
dB
V
mΩ
mA
A
mV/°C
Note 1) The specified condition T
j
=
25°C means that the test should be carried out within so short a test time (within 10ms) that the
characteristic value drift due to the chip junction temperature rise can be ignored.
Note 2) Unless otherwise specified, V
I
=
33V, I
O
=
500mA, C
I
=
0.33µF and C
O
=
0.1µF.
* AN78xx series: 15W, AN78xxF series: 10.25W
7