SP7686

www.DataSheet4U.com Solved by SP7686/7686A TM Constant Current Flash Driver in DFN 2mm x 3mm FEATURES Output current up to 500mA Up to 94% efficiency in 1x mode Built-in LED current setting DAC One line serial interface 2.4MHz switching frequency FB Reference voltage adjusts in 10mV steps from 60mV to 360mV DAC signal shutdown control Power-saving shutdown mode of 10nA PWM brightness control for DAC Fast turn-on (<150µs) 3.5s Timeout function to protect the LED Thermal shutdown protection Built-in over-voltage and over-current protection Fixed output versions available (SP7686A) Automatic soft start limits in-rush current Lead Free, RoHS Compliant Package: Space saving 8-pin 2x3mm DFN DESCRIPTION The SP7686 is a current regulated charge pump ideal for powering high-brightness LEDs for camera FLASH applications of up to 500mA. The charge pump automatically switches between step-up and step-down modes ensuring that the LED current does not depend on the forward voltage. A low current sense reference voltage (60mV to 360mV) allows the use of small 0603 current sensing resistors. The SP7686 has a DAC programmable feedback reference voltage allowing the user to precisely set FLASH and TORCH output current levels, while the fixed version SP7686A has set levels of FLASH and TORCH reference voltage. Both parts have over-voltage, overcurrent, over-temperature and FLASH time-out protection features. The SP7686 is offered in the 2x3mm 8-pin DFN package. TYPICAL APPLICATION CIRCUITS 0....