1.

General description

The SSL3250A is a photo flash LED driver designed for battery operated mobile devices

such as mobile phones and PDAs. The boost converter delivers high performance and

drives a single or dual, high brightness LED at up to 500 mA with over 85 % efficiency.

The driver can be programmed to operate in Flash, Torch or Indicator / Video-on mode.

The small silicon size and the high internal switching frequency of 1.2 MHz minimize the

SSL3250A footprint making it very suitable for mobile phones where space is limited, and

only requiring four external components. Driving a high power flash LED within its safe

operating limits was a concern when the SSL3250A was designed, so a time-out function

the specific requirements of a mobile phone, the flash current can be rapidly lowered

during RF transmit by using optional external setting resistors.

2.

Features

SSL3250A

Photo flash dual LED driver

Rev. 03 — 30 June 2009

Product data sheet