NIKO L78L09 Datasheet

1

Three-Terminal

Positive-Voltage Regulator

NIKO-SEM

L78

L09

MAR-14-

2002

GENERAL DESCRIPTION

This Series of fixed-

voltage monolithic 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 inter-

nal limiting and thermal shutdown features of

these r

egulators male them essentially immune

to overload. When used as a replacement for a

zener diode-

resistor combination, an effective

improvement in output impedance can be obtain

-ed together with lower-bias current.

FEATURES

l 3-terminal regulators
l Ou tput current up to 100 mA
l No external component
l Internal thermal overload protection
l Internal short-circuit current limiting

APPLICATION S

l Linear regulator
l Instrumentation
l Switching power supplies
l PCs, Industrial equipment

PIN CONFIGURAT IONS

DEVICE SELECTION GUIDE

Device

L78L09N

Package

TO-92

Marking

78L09

2

Three-Terminal

Positive-Voltage Regulator

NIKO-SEM

L78

L09

MAR-14-

2002

ABSOLUTE MAXIMUM RATINGS

PARAMETER VALUE

Input Voltage - V I 30V
Continuous total power dissipation (See Note 1)
Storage Temperature Range - T

STG

-55 to +150 °C
Junction Temperature - TJ 125 °C
Lead Temperature (Soldering, 10 Seconds) - TL 260 °C

Note1: To avoid exceeding the design maximum virtual junction temperature, three ratings should not be exceeded. Due to variations in

individual device electrical characteristics and thermal resistance, the built-in thermal overload protection may be activated at power
levels slightly above or below the rated dissipation.

DISSIPATION RATING TABLE 1 – FREE-AIR TEMPERATURE

PACKAGE

TA ≤ 25°C

POWER RATING

DERATING

FACTOR

DERATING

ABOVE TA

TA = 70°C

POWER RATING

TO-92 650 mW 6.2 mW/ °C 25 °C 350 mW

† The TO-92 package dissipation rating is based on thermal resistance θJA measured in still air with the device mounted in an Augat socket.

The bottom of the package is 10mm (0.375 in) above the stock.

DISSIPATION RATING TABLE 2 – CASE TEMPERATURE

PACKAGE

TA ≤ 25°C

POWER RATING

DERATING

FACTOR

DERATING

ABOVE TC

TC = 125°C

POWER RATING

TO-92 1600 mW 28.6 mW/°C 94 °C 713 mW

RECOMMENDED OPERATING CONDITIONS

PARAMETER VALUE

Input Voltage - V

I

L78L09

12V to 30V

Output Current - I

OUT

100 mA (Max)

Operating Virtual Junction Temperature - TJ 0 to 125 °C