Functional Description

The TLE 4242 G is an integrated adjustable constant current source driving loads up to 500 mA. The output current level can be adjusted via an external resistor. The IC is designed to supply high power LEDs (e.g. Osram Dragon LA W57B) under the severe conditions of automotive applications resulting in constant brightness and extended LED lifetime. It is provided in the surface mounted PG-TO263-7-1 package. Protection circuits prevent damage to the device in case of overload, short circuit, reverse polarity and

overheat. The connected LEDs are protected against reverse polarity as well as excess voltages up to 45 V.

Features

• Adjustable constant current up to 500 mA (±5%)

• Wide input voltage range up to 42 V

• Low drop voltage

• Open load detection

• Overtemperature protection

• Short circuit proof

• Reverse polarity proof

• Wide temperature range: -40 °C to 150 °C

• Green Product (RoHS compliant)

• AEC Qualified