IS31LT3948 Datasheet (ISSI) - PFM MODE BOOST LED DRIVER

IS31LT3948, PFM MODE BOOST LED DRIVER

The IS31LT3948 is a PFM step-up DC-DC converter designed for driving the white LED arrays for large size LCD panel backlighting applications.

It can deliver stable constant output current from a few milliamps up to 2A, programmed via an external resistor.

The IS31LT3948 utilizes a control scheme in

IS31LT3948 Features

* external PWM dimming, which allows the flexible control of the back-lighting luminance. The IS31LT3948 has a wide input voltage range from 5V to 100V (Note). An integrated OVP circuit protects the chip and the system even under no-load conditions. Note: The IS31LT3948 has an internal 5V shunt regula