78L24
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
Provided Pb-Free packages from the end
of 2004
Positive-Voltage Regulators
O
C
I
TO-92
78L24ACZ
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
78L24CPK
electrical characteristics at specified virtual junction temperature, V
I
=
32V, I
o
= 40mA (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
TJ
‡
MIN
25°C
Output voltage
78L24
TYP
24
UNIT
MAX
25
25.2
23
22.8
I
o
=1mA to 40MA, V
I
=26.5 to 39V
IO = 1 mA to 70 mA
VI =
26.5V to 39V
VI =
29V to 39V
VI =
27.5V to 37.5V,
f = 120 Hz
IO = 1 mA to 100 mA
IO = 1 mA to 40 mA
f = 10 Hz to 100 kHz
V
7Vt
I
A
1 mA t 40 mA
A to
Full range
Full range
25°C
25 C
25°C
25°C
25 C
25°C
25°C
25°C
125°C
24
24
95
78
V
22.8
25.2
480
400
dB
240
120
mV
mV
µV
V
6.5
mA
mA
mA
mA
Input
voltage regulation
Ripple rejection
Output
voltage regulation
Output
noise voltage
Dropout voltage
mV
mV
30
33
41
28
97
1.7
4.8
Bias
current
current
Bias c rrent
Bias
current change
VI =
28V to 39V
IO = 1 mA to 40 mA
Full
range
F ll
Full
6
1.5
0.1
‡ 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:(852)2341 9276 Fax:(852)2797 8153
E-mail: wsccltd@hkstar.com
2-1
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