HT7939 Datasheet (Holtek Semiconductor) - High Current and Performance White LED Driver

HT7939, High Current and Performance White LED Driver

The HT7939 is a high efficiency boost converter for driving White LEDs using current mode operation.

The device is designed to drive up to 39 White LEDs from a 5V power supply.

The White LED current is setup using an external current setting resistor, which has a low feedback voltage of 0.2V to mini

HT7939 Features

* Input range from 2.6V~5.5V

* Built-in Power MOSFET

* Can drive up to 39 White LEDs with a 5V input

* Low standby current: 0.1mA (typ.) with VEN low

* Integrated Over-voltage, Over-temperature and

* Under voltage lock-out protection

* 1.2MHz fixed switching frequency