78L05
Positive-Voltage Regulators
3-Terminal Regulators
Output Current up to 100 mA
No External Components
78L05ACZ-Bulk
Internal Thermal-Overload Protection
Internal Short-Circuit Current Limiting
78L05ACZM-Ammo
O
C
TO-92
I
SO-8
78L05ACM
Provided Pb-Free packages from the end
of 2004
INPUT
COMMON
OUTPUT
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
elementstomakehigh-currentvoltageregulators.
One of these regulators can deliver up to 100 mA
of output current. The internal limiting and
thermal-shutdown features of these regulators
makethemessentiallyimmunetooverload. 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.
OUTPUT
GND
INPUT
SOT-89
78L05CPK
electrical characteristics at specified virtual junction temperature, V = 10 V, I = 40 mA (unless
I
o
otherwise noted)
78L05
‡
TEST CONDITIONS
UNIT
T
PARAMETER
MIN
4.8
TYP
5
MAX
5.2
25°C
5
I =1mA to 40MA, V =7V to20V
4.75
4.75
5.25
5.25
150
100
Output voltage
I
V
o
Full range
Full range
= 1 mA to 70 mA
5
O
V = 7 V to 20 V
I
32
26
49
15
8
Input
voltage regulation
mV
°
25 C
V = 8 V to 20 V
I
Ripple rejection
V = 8 V to 18 V,
I
f = 120 Hz
25°C
41
dB
I
= 1 mA to 100 mA
60
30
Output
O
O
°
25 C
mV
voltage regulation
I
= 1 mA to 40 mA
Output
noise voltage
f = 10 Hz to 100 kHz
25°C
µV
42
Dropout voltage
25°C
25°C
V
1.7
3.8
6
5.5
1.5
0.1
Bias current
mA
mA
125°C
V = 8 V to 20 V
I
Bias
current change
Full range
I
O
= 1 mA to 40 mA
‡
Pulse-testing techniques maintain T as close to T as possible. Thermal effects must be taken into account separately. All characteristics are
J
A
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 = 0°C to 70°C
J
1
