Type

Ordering Code

Package

TLE 4241 GM

Q67006-A9644

P-DSO-8-9

LED Driver with Adjustable Current

TLE 4241 GM

P-DSO-8-3, -6, -7, -8, -9

Data Sheet

1

Rev. 1.2, 2004-04-13

Features

•

Adjustable constant output current

•

Wide input voltage range

•

Low drop voltage

•

Open load detection

•

Overtemperature protection

•

Short circuit proof

•

Reverse polarity proof

•

Wide temperature range: -40

•

Very small SMD-Package

Functional Description

The TLE 4241 GM is an integrated adjustable constant current source. It provides an

output current adjustable via different means (SET, PWM, reference resistor) which is

kept nearly independent from load and supply voltage changes. The IC is designed to

supply LEDs under the severe conditions of automotive applications resulting in constant

brightness and extended LED lifetime. It is provided in the very small P-DSO-8-9

(Micro 8) package. Protection circuits prevent damage to the device in case of overload,

short circuit, reverse polarity and overtemperature. The connected LEDs are protected

against reverse polarity as well as excess voltages up to 45 V. A status output allows

handling of open load and short circuit at the main output.

A PWM input offers the possibility to adjust the LED brightness by pulse width

modulation.

With an implemented high/low current switch the output current level can be reduced e.g.

for brake/tail light application.

The implemented features such as adjustable output current, the high/low current switch

and the provided PWM input make the device well suited for a broad range of LED and

other applications.