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RT9907

Richtek Technology Corporation
Part Number RT9907
Manufacturer Richtek Technology Corporation
Description 3-Channel DC/DC Converters
Published Jul 30, 2008
Detailed Description ® RT9907 3 Channel DC-DC Converters IC with High-Efficiency StepUp and Step-Down General Description The RT9907 is a ...
Datasheet PDF File RT9907 PDF File

RT9907
RT9907

Overview
® RT9907 3 Channel DC-DC Converters IC with High-Efficiency StepUp and Step-Down General Description 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 from 1.
5V to 5.
5V.
Each DC-DC converter has better transient response and excellent stability by providing current-mode control and external compensation network.
With built-in Internal MOSFET and up to 1.
4MHz operating frequency, the RT9907 allows minimum BOM cost and PCB area.
The step-down DC-DC converters (CH2, CH3) can regulate output voltage as low as 0.
8V.
Three operational modes are available: PWM, PSM, Low-Dropout modes.
At PWM mode, Internal synchronous rectifier with low RDS(ON) dramatically reduces conduction loss and ac...


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