TLE 4242 G is an adjustable constant current source that can drive loads up to 500 mA. It features a wide input voltage range, low drop voltage, open load detection, overtemperature protection, short circuit proof, reverse polarity proof, etc. It is designed to supply high power LEDs in automotive applications, ensuring constant brightness and extended LED lifetime.
The TLE 4242 G is an integrated adjustable constant‑current LED driver designed for automotive‑grade applications. It supplies up to 500 mA to high‑power LEDs and includes protection against overload, short‑circuit, reverse polarity, and over‑temperature.
Key features include a wide input voltage range (4.5 V to 42 V), PWM‑controlled brightness, open‑load detection, and a low drop voltage. Typical application circuits use an external shunt resistor to set the desired current, while the status output pin indicates load conditions. The device is offered in a surface‑mounted P‑TO263‑7‑1 package.
| Adjustable constant current | up to 500 mA |
|---|---|
| Input voltage range | 4.5 V to 42 V |
| Operating temperature range | -40 °C to 150 °C |
| Typical output current | 357 mA (typ.) |
| Maximum drop voltage | 0.7 V at 300 mA |
It can drive a constant current up to 500 mA.
Brightness is regulated by the PWM input, which adjusts the duty cycle.
The device provides open‑load detection, over‑temperature protection, short‑circuit proof, and reverse‑polarity proof.