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RT9907 - 3-Channel DC/DC Converters

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.

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,.

📥 Download Datasheet

Datasheet Details

Part number RT9907
Manufacturer Richtek Technology Corporation
File Size 440.64 KB
Description 3-Channel DC/DC Converters
Datasheet download datasheet RT9907 Datasheet

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Full PDF Text Transcription

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® 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.
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