of 2004

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.

otherwise noted)

PARAMETER

TEST CONDITIONS

TJ‡

UNIT

J

MIN

TYP

MAX

V

7Vto20V

I

1 mA to 40 mA

25

°C

4.8

5

5.2

Output voltage

V

7 V t

o

20 V

I

1

A t 40

A

Full range

4.75

5.25

V

IO = 1 mA to 70 mA

Full range

4.75

5.25

Input

VI = 7 V to 20 V

25

°C

32

150

mV

voltage regulation

VI = 8 V to 20 V

25

°C

26

100

mV

Ripple rejection

VI = 8 V to 18 V,

f = 120 Hz

25

°C

41

49

dB

Output

IO = 1 mA to 100 mA

25

°C

15

60

mV

voltage regulation

IO = 1 mA to 40 mA

25

°C

8

30

mV

Output

noise voltage

f = 10 Hz to 100 kHz

25

°C

42

µV

Dropout voltage

25

°C

1.7

V

Bias current

25

°C

3.8

6

mA

Bias c rrent

125

°C

5.5

mA

Bias

VI = 8 V to 20 V

Full range

1.5

mA

current change

IO = 1 mA to 40 mA

F ll range

0.1

mA

‡ 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

78L05

o

I =1mA to 40MA, V =7V to20V

5

5

25 C

25 C

Bias current

Full

mV

mV

mA

mA

78L05

INPUT

COMMON

OUTPUT

TO-92

OUTPUT

GND INPUT

SOT-89

78L05ACZ-Bulk

78L05CPK

O

C

I

SO-8

78L05ACM

Positive-Voltage Regulators

1

78L05ACZM-Ammo