The TLE 4241 GM is an adjustable constant current source from Texas Instruments. It provides an adjustable output current that 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.
The TLE4241 GM is an integrated adjustable constant‑current LED driver designed for automotive lighting. It offers a wide input voltage range, adjustable output current via SET, PWM or external resistor, and includes protection against overload, short‑circuit, reverse polarity and over‑temperature.
The device is supplied in a very small P‑DSO‑8‑9 (Micro‑8) package and provides status output for open‑load detection, a high/low current switch for brake/tail‑light applications, and a PWM input for brightness control or enable function.
| Input voltage range | 4 V – 45 V |
|---|---|
| Typical output current (high‑current mode) | 47 – 70 mA (SET=H, Vg=6 V) |
| Drop voltage (low‑current mode) | 0.3 V (typ.) |
| PWM input high‑level voltage | ≥ 2.0 V |
The PWM input adjusts LED brightness by varying duty cycle and can also be used as an enable input; setting PWM low puts the device into a low‑current sleep mode.
It is provided in a very small P‑DSO‑8‑9 (Micro‑8) surface‑mount package.