Negative-Voltage Regulator. 79L12 Datasheet

79L12 Regulator. Datasheet pdf. Equivalent

79L12 Datasheet
Recommendation 79L12 Datasheet
Part 79L12
Description Negative-Voltage Regulator
Feature 79L12; 79L12 Negative-Voltage Regulators D 3-Terminal Regulators D Output Current Up to 100 mA D No Exter.
Manufacture SYC
Datasheet
Download 79L12 Datasheet




SYC 79L12
79L12
Negative-Voltage Regulators
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
description
C
IO
TO–92
79L12A
CZ
OUTPUT
INPUT
COMMON
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-
798L912C COMM INP OUTP
PK
ON UT UT
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 fective improvement in output impedance of two orders of magnitude, with
current.
lower bias
electrical characteristics
otherwise noted)
at
specified
virtual
junction
temperature,
VI
=
-19V,
IO=40mA
(unless
PARAMETER
TEST CONDITIONS
TJ
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 40mI A,V =-14.5V
tIoO =-217mVA to 70 mA
VI = -14.5 to -27V
VI = -16V to -27V
VI =-15V to -25fV= 120 Hz
IO = 1 mA to 100 mA
IO = 1 mA to 40 mA
f = 10 Hz to 100 kHz
Dropout voltage
BBiaias scurrent
current
Bias
current change
VI = -16V to -27V
IO = 1 mA to 40 mA
25°C
Full range
Full range
22552°5C°CC
25°C
2255°CC
25°C
25°C
25°C
125°C
FFuulllrlange
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
200
mmVV
dB
60
30 mmVV
µV
V
6.5 mA
6 mA
1.5
0.1 mmA A
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 isJ =T0°C to 70°C
3-1



SYC 79L12
WS
79L12
equivalent schematic
COMMON
OUTPUT
INPUT
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Input voltage: 79L12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -35V
Operating free-air, case, or virtual junction temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .150°C
Lead temperature 1.6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C
recommended operating conditions
79L12
Input voltage, VI
Output current, IO
Operating virtual junction temperature, TJ
MIN MAX UNIT
-14.5 -27 V
100 mA
0 70 °C
3-2



SYC 79L12
WS
79L12
Pad Location WS79L00
3
2
1
90µm
chip size 1.15 x 1.35mm
Pad Location Coordinates
Pad N
1
2
3
Pad Name
Ground
Input
Output
X(µm)
1150
115
115
Y(µm)
115
690
950
3-3







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