79L05
Negative-Voltage Regulators
3-Terminal Regulators
Output Current Up to 100 mA
OUTPUT
INPUT
COMMON
No External Components Required
Internal Thermal-Overload Protection
Internal Short-Circuit Current Limiting
C
I
O
Direct Replacement for Motorola MC79L00
Series
TO–92
79L05ACZ
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
elimination of noise and distribution problems
associatedwith single-point regulation. In addition,
SOT-89
COMMON
79L05CPK
INPUT OUTPUT
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 ef
current.
fective improvement in output impedance of two orders of magnitude, with lower bias
-
electrical characteristics at specified virtual junction temperature, V = 10 V, I = 40 mA (unless
I
otherwise noted)
79L05
‡
TEST CONDITIONS
UNIT
T
PARAMETER
MIN
-4.8
TYP
MAX
25°C
-5
-5.2
-5.25
-5.25
150
-4.75
Output voltage
V
Full range
Full range
I =1mA to 40mA,Vi=-7V to -20V
o
I
O
= 1 mA to 70 mA
-4.75
-7V to -20V
-8V to -20V
-8V to -18V
V =
Input
voltage regulation
I
15
°
mV
25 C
V =
I
100
Ripple rejection
V =
I
f = 120 Hz
25°C
41
49
20
10
dB
I
= 1 mA to 100 mA
= 1 mA to 40 mA
60
30
Output
voltage regulation
O
O
°
25 C
mV
I
Output
noise voltage
f = 10 Hz to 100 kHz
25°C
µV
40
Dropout voltage
25°C
25°C
V
1.7
6
5.5
1.5
0.1
Bias current
125°C
mA
mA
V =
-8V to -20V
Bias
current change
I
range
Full
I
O
= 1 mA to 40 mA
‡
Pulse-testing techniques maintain T as close to T as possible. Thermal effects must be taken into account separately. All characteristics are
J
A
measured with a 0.33-µF capacitor across the input and a 0.1-µF capacitor across the output. Full range for the 7
= 0°C to 70°C
9L05 is T
J
3-1
Wing Shing Computer Components Co., (H.K.)Ltd.
Homepage: http://www.wingshing.com
Tel:(852)2341 9276 Fax:(852)2797 8153
E-mail: wsccltd@hkstar.com