WD3139 Datasheet (WillSEMI) - 38V Step-Up White LED Driver

WD3139, 38V Step-Up White LED Driver

The WD3139 is a constant current, high efficiency LED driver.

Internal MOSFET can drive up to 10 white LEDs in series with 1.2A current limit and 38V OVP.

A Pulse-Width-Modulation (PWM) signal can be applied to the EN pin for LED dimming.

The device operates at 1MHz fixed switching frequency to red

WD3139 Features

* Input voltage range : 2.7~5.5V

* Open LED Protection : 38V (Typ.)

* Reference Voltage : 200mV (±5%)

* Switching frequency : 1MHz (Typ.)

* Efficiency : Up to 92%

* Main switch current limit : 1.2A (Typ.)

* PWM Dimming frequency : 5KHz to200KHz

* PWM Dimm