RT9907 - Richtek Technology Corporation

RT9907 3-Channel DC/DC Converters

The RT9907 is a three channel power-supply solution for digital still cameras and other battery-powered devices. It integrates an asynchronous step-up and two synchronous step-down DC-DC converters. The RT9907 is targeted for applications that use two AA cells or a single lithium-ion battery. The three DC-DC converters (CH1, CH2, CH3) accept input voltage fr.

Features

 1.5V to 5.5V Battery Input Voltage Range
 Main step-up DC-DC Converter  1.5V to 5.5V Adjustable Output Voltage  Up to 90% Efficiency  2.6A, 0.3Ω Internal Power Switch
 Two Step-Down DC-DC Converters  0.8V to 5.5V Adjustable Output Voltage  94% Efficiency  100% Duty Cycle
 Up to 1.4MHz Switching Frequency
 1μA Supply Current in Shutdown Mode
 Programmable Soft Start Function
 Independent Enable Pin (CH1, CH2, CH3)
 External Compensation Network (CH1, CH2, CH3)
 Short Circuit Protection (CH1, CH2, CH3)
 Over Voltage Protection (CH2)
 24-Lead VQFN Package
 RoHS Compliant and 10.