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Wing Shing Computer Components - Negative-Voltage Regulators

Numéro de référence 79L12
Description Negative-Voltage Regulators
Fabricant Wing Shing Computer Components 
Logo Wing Shing Computer Components 





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79L12 fiche technique
79L12
D 3-Terminal Regulators
D Output Current Up to 100 mA
D No External Components Required
D Internal Thermal-Overload Protection
D Internal Short-Circuit Current Limiting
D Direct Replacement for Motorola MC79L12
Series
Negative-Voltage Regulators
C
I
O
TO–92
79L12ACZ
OUTPUT
INPUT
COMMON
description
This series of fixed negative-voltage integrated-circuit
voltage regulators is designed for a wide range of
applications. These include on-card regulation for
SOT-89
79L12CPK COMMON INPUT OUTPUT
elimination of noise and distribution problems
associatedwith single-point regulation. In addition,
they can be used to control series pass elements to make high-current voltage-regulator circuits. One of these
regulators can deliver up to 100 mA of output current. The internal current-limiting and thermal-shutdown features
make them essentially immune to overload. When used as a replacement for a zener-diode and resistor combination,
these devices can provide effective improvement in output impedance of two orders of magnitude, with lower bias
current.
electrical characteristics at specified virtual junction temperature, VI = -19V, IO =40mA (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
Output voltage
Input
voltage regulation
Ripple rejection
Output
voltage regulation
Output
noise voltage
V 7 V to 20 V I 1 mA to 40 mA
Io=1mA to 40mA,VI =-14.5V to -27V
IO = 1 mA to 70 mA
VI = -14.5 to -27V
VI = -16V to -27V
VI =-15V to -25V f = 120 Hz
IO = 1 mA to 100 mA
IO = 1 mA to 40 mA
f = 10 Hz to 100 kHz
Dropout voltage
BBiiaassccuurrrernetnt
Bias
current change
VI = -16V to -27V
IO = 1 mA to 40 mA
TJ
25°C
Full range
Full range
22552°5CC°C
25°C
2255°CC
25°C
25°C
25°C
125°C
Fulll range
MIN
-11.5
-11.4
-11.4
37
79L12
TYP
-5
50
40
42
24
15
80
1.7
UNIT
MAX
-12.5
-12.5 V
-12.5
250
mmVV
200
dB
60
30 mmVV
µV
V
6.5
mA
6 mA
1.5
0.1 mmAA
‡ Pulse-testing techniques maintain TJ as close to TA as possible. Thermal effects must be taken into account separately. All characteristics are
measured with a 0.33-µF capacitor across the input and a 0.1-µF capacitor across the output. Full range for the 79L12 is TJ = 0°C to 70°C
Wing Shing Computer Components Co., (H.K.)Ltd.
Homepage: http://www.wingshing.com
Tel:(852)2341 9276 Fax:(852)2797 8153
3-1

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