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RT5771A - Synchronous Step-Down Converter

Datasheet Summary

Description

The RT5771A is a high efficiency synchronous, step-down DC-DC converter.

Its input voltage ranges from 2.7V to 5.5V that provides an adjustable regulated output voltage from 0.6V to VIN while delivering up to 3A of output current.

Features

  • High Efficiency : Up to 95%.
  • Low RDS(ON) Power Switches : 69mΩ/49mΩ.
  • Current Mode Operation.
  • Forced-PWM (FPWM) Mode.
  • Fast Transient Response.
  • Fixed Frequency : 1MHz.
  • No Schottky Diode Required.
  • Internal Compensation.
  • 0.6V Reference Allows Low Output Voltage.
  • Low Dropout Operation : 100% Duty Cycle.
  • OCP, UVP, OTP.
  • OpenVReg Type 0-LV Compliant.

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Datasheet preview – RT5771A

Datasheet Details

Part number RT5771A
Manufacturer Richtek
File Size 170.41 KB
Description Synchronous Step-Down Converter
Datasheet download datasheet RT5771A Datasheet
Additional preview pages of the RT5771A datasheet.

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Full PDF Text Transcription

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® RT5771A 3A, 1MHz, Synchronous Step-Down Converter General Description The RT5771A is a high efficiency synchronous, step-down DC-DC converter. Its input voltage ranges from 2.7V to 5.5V that provides an adjustable regulated output voltage from 0.6V to VIN while delivering up to 3A of output current. The internal synchronous low on-resistance power switches increase efficiency and eliminate the need for an external Schottky diode. The switching frequency is fixed internally at 1MHz. The 100% duty cycle provides low dropout operation, hence extending battery life in portable systems. Current mode operation with internal compensation allows the transient response to be optimized over a wide range of loads and output capacitors. The RT5771A is available in a WDFN-10L 3x3 package.
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