L7908C STMicroelectronics, L7908C Datasheet - Page 11

• Manufacturer Part Number: L7908C
• Description: NEGATIVE VOLTAGE REGULATOR
• Manufacturer: STMicroelectronics

L79xxC
Table 8.
1. Load and line regulation are specified at constant junction temperature. Changes in V
Symbol
ΔV
ΔV
ΔV
SVR
taken into account separately. Pulse testing with low duty cycle is used.
ΔI
V
V
eN
V
I
O
I
sc
O
O
d
O
O
/ΔT
d
d
(1)
(1)
Output voltage
Output voltage
Line regulation
Load regulation
Quiescent current
Quiescent current change
Output voltage drift
Output noise voltage
Supply voltage rejection
Dropout voltage
Short circuit current
Refer to the test circuits, T
unless otherwise specified.
Electrical characteristics of L7920C
Parameter
T
I
V
V
V
I
I
I
V
I
B = 10Hz to 100kHz, T
ΔV
I
T
O
O
O
O
O
O
J
J
I
I
I
I
= -24 to -35 V
= -23 to -35 V, T
= -26 to -32 V, T
= -24 to -35 V
= -5 mA to -1 A, P
= 5 mA to 1.5 A, T
= 250 to 750 mA, T
= 5 mA to 1 A
= 5 mA
I
= 1 A, T
J
= 25°C
= 25°C
= 10 V, f = 120Hz
= 0 to 125 °C, V
Doc ID 2149 Rev 20
J
Test conditions
= 25°C, ΔV
J
J
= 25°C
= 25°C
O
J
J
I
= 25°C
≤ 15 W
J
O
= 25°C
= -29 V, I
= 25°C
= 100 mV
O
= 500 mA, C
O
due to heating effects must be
-19.2
Min.
-19
54
Electrical characteristics
I
= 2.2 µF, C
Typ.
-1.1
350
-20
-20
1.1
0.9
60
Max.
-20.8
400
200
400
200
-21
0.5
3
1
O
= 1 µF
mV/°C
Unit
mV
mV
mA
mA
µV
dB
11/25
V
V
V
A