78L12 Datasheet, PDF (1/2 Pages) Wing Shing Computer Components – Positive-Voltage Regulators

78L12
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
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.
Positive-Voltage Regulators
OC
I
TO-92
78L12ACZ
INPUT
COMMON
OUTPUT
OUTPUT _{GND INPUT}
SOT-89
78L12CPK
electrical characteristics at specified virtual junction temperature, V_I = 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, V_I=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
B_Bi_ia_as_{s c}c_uu_rr_rr_ee_nn_t 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
m^mV^V
dB
m^mV^V
µV
V
6
5.5 ^mmAA
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 78L05 is T _J = 0°C to 70°C
Wing Shing Computer Components Co., (H.K.)Ltd.
Homepage: http://www.wingshing.com
Tel:[phone] Fax:[phone]
E-mail: [e-mail]
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