DESCRIPTION

KEY FEA TURES

s

s

s

s

s 2% Internally Trimmed Output

s

s

s

s

s Output Current In Excess Of 1A

s

s

s

s

s Input-Output Differential

Less Than 0.4V At 1A

p Reverse Battery Protection

p 60V Load Dump Protection

p -50V Reverse Transient Protection

p Short Circuit Protection

p Internal Thermal Overload Protection

p Available In 3-Lead Plastic TO-220

p Drops In Most lM2940 Sockets

The LX8940 is a 5V, low dropout, low

quiescent current regulator rated for 1A

of output current. It can regulate with

as low as 0.4V headroom between the

input and output voltages, thus

minimizing power dissipation. In

addition, it can be used in applications

where worst case supplies require a

low input-output differential to maintain

regulation. This feature makes it ideal

for computer monitors that have to

comply with energy-efficient / "Green

PC" programs, where the input voltage

drops to only a few tenths of a volt

above the output when power supply

enters sleep-mode operation.

PRODUCT HIGHLIGHT

T

Plastic TO-220

3-pin

0 to 125

LX8940CP

-40 to 125

LX8940IP

P

LX8940

OUT

IN

GND

10µF

0.1µF

5V/100mA

5.3V

VS

100

0

Output Current - (mA)

600

200

100

500

1000

400

500

300

125°C

25°C

-40°C

Time - (20µs/Div.)

0mA

T

C

V

5.000V

C

100mA

4.980V

APPLICA TIONS

s Small Headroom Battery Applications

s High Efficiency Linear Regulators

s Post Regulators For Switching Power

Supplies

s Green PC Monitor Applications

OF

LX8940

PACKAGE ORDER INFO

Copyright © 1999

Rev. 1.3

3/99

1

NOTE: For current data & package dimensions, visit our web site: http://www.linfinity.com.