Type Package
TLE 4242 G PG-TO263-7-1
Adjustable LITIX
TM
Linear
TLE 4242 G
Data Sheet 1 Rev. 1.1, 2007-03-20
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
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.
The integrated PWM input of the TLE 4242 G permits LED brightness regulation by
pulse width modulation. Due to the high input impedance of the PWM input the LITIX
TM
Linear can be operated as a protected high side switch.
