资 源 简 介
The AAT3158 is a low noise, constant frequency charge pump DC/DC converter that uses a trimode load switch (1X), fracTIonal (1.5X), and doubling (2X) conversion to maximize efficiency for white LED applicaTIons. The AAT3158 is capable of driving up to four LED channels at 20mA per channel from a 2.7V to 5.5V input. The current sinks may be operated individually or in parallel for driving higher current LEDs. A low external parts count(two 1μF flying capacitors and two small 1μF capacitors at VIN and VOUT) make this part ideally suited for small, battery-powered applicaTIons.
