HT7937 Datasheet (Holtek Semiconductor) - Built-in OVP White LED Step-up Converter

HT7937, Built-in OVP White LED Step-up Converter

The HT7937 is high efficiency boost converter with a constant current output to provide back light functions in handheld devices.

Applications with series connected LEDs ensure constant and identical LED currents resulting in uniform brightness.

A continuous LED output current is setup using the FB

HT7937 Features

* Integrated open-circuit protection

* Over voltage protection

* Up to 84% efficiency at VIN=3V, 3LEDs,

* Low standby current: 0.1mA (typ.) (VSHDN=0V)

* Matches LED current

* Small value inductor and capacitors

* Small outline SOT23-6 package ILED= 20mA

* 1.2MHz fixe