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78L12
Positive-Voltage Regulators
D 3-Terminal Regulators
D Output Current up to 100 mA
D No External Components
D Internal Thermal-Overload Protection
D Internal Short-Circuit Current Limiting
D Direct Replacements for Fairchild µA78L12
Series
OC
I
TO-92
78L12ACZ
description
This series of fixed-voltage integrated-circuit
voltage regulators is designed for a wide range of
applications. These applications include on-card
regulation for elimination of noise and distribution
problems associated with single-point regulation.
In addition, they can be used with power-pass
elements to make high-current voltage regulators.
One of these regulators can deliver up to 100 mA
of output current. The internal limiting and
thermal-shutdown features of these regulators
make them essentially immune to overload. When
used as a replacement for a zener diode-resistor
combination, an effective improvement in output
impedance can be obtained, together with lower
bias current.
INPUT
COMMON
OUTPUT
OUTPUT GND INPUT
SOT-89
78L12CPK
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electrical characteristics at specified virtual junction temperature, VI = 19V, I o =40mA (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
Output voltage
Input
voltage regulation
Ripple rejection
Output
voltage regulation
Output
noise voltage
Dropout voltage
V 207VV to 20 V I
I O=1mA to 40MA, VI=14V to 27V
IO = 1 mA to 70 mA
VI = 14.5V 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
BBiiaass ccuurrrreennt t
Bias
current change
VI = 16V to 27V
IO = 1 mA to 40 mA
TJ‡
25°C
Full range
Full range
2255°CC
25°C
25°C
MIN
11.5
11.4
11.4
37
25°C
25°C
25°C
125°C
FFuulll range
78L12
TYP
12
12
12
55
49
42
22
13
70
1.7
4.3
MAX
12.5
12.6
12.6
250
200
100
50
UNIT
V
mmVV
dB
mmVV
µV
V
6
5.5 mmAA
1.5
0.1 mmAA
DataShee
‡ 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 78L05 is T J = 0°C to 70°C
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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
2-1
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WS
78L12
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absolute maximum ratings over operating temperature range (unless othewise noted)
Input voltage, VI
78L12
Virtual junction temperature range, TJ
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
Storage temperature range, Tstg
PARAMETER UNIT
35 V
150 °C
260 °C
–65 to 150 °C
recommended operating conditions
78L12
MIN MAX UNIT
Input voltage, VI
8 20 V
Output current, IO
100 mA
Operating virtual junction temperature, TJ
0 70
°C
Pad Location 78L12
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3 290um
90um
85um
90um
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99
195um
100um
Chip size 1.0 x 1.2 mm
Pad N
1
2
3
Pad Name
Ground
Input
Output
X (um)
95
820
535
Y (um)
100
1010
1015
2-2
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