78L08
D
D
D
D
D
D
3-Terminal Regulators
Output Current up to 100 mA
No External Components
Internal Thermal-Overload Protection
Internal Short-Circuit Current Limiting
Direct Replacements for Fairchild
碌A(chǔ)78L0
8
Series
Positive-Voltage Regulators
O
C
I
TO-92
78L08ACZ
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
OUTP
UT
GND INPUT
SOT-89
78L08CPK
electrical characteristics at specified virtual junction temperature, V
I
= 1
4
V, I
o
= 40 mA (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
TJ
鈥?/div>
MIN
25擄C
Output voltage
V 7 V t 20 V
to
I
A
1 mA to 40 mA
At
I
o
=1mA to 40mA, V
i
=10.5 to 23V
IO = 1 mA to 70 mA
VI =
10.5V to 23V
VI =
11V to 23V
VI =
13V to 23V
f = 120 Hz
IO = 1 mA to 100 mA
IO = 1 mA to 40 mA
f = 10 Hz to 100 kHz
Full range
Full range
25擄C
25 C
25擄C
25擄C
25 C
25擄C
25擄C
25擄C
125擄C
VI =
11V to 23V
IO = 1 mA to 40 mA
78L08
TYP
MAX
UNIT
7.7
8
7.6
7.6
8
8.3
8.4
V
8
42
Input
voltage regulation
Ripple rejection
Output
voltage regulation
Output
noise voltage
Dropout voltage
8.4
175
125
80
40
36
37
46
mV
mV
dB
mV
mV
碌V
V
18
10
54
1.7
Bias
current
current
Bias c rrent
Bias
current change
4
6
5.5
1.5
0.1
mA
mA
mA
mA
Full
range
F ll
Full
鈥?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-碌F capacitor across the input and a 0.1-碌F capacitor across the output. Full range for the 78L05 is T J = 0擄C to
70擄C
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
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