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RT2657BQ - 2.25MHz 600mA Synchronous Step-Down Converter

Datasheet Summary

Description

The RT2657BQ is a high efficiency Pulse-WidthModulated (PWM) step-down DC/DC converter, capable of delivering 600mA output current over a wide input voltage range from 2.7V to 5.5V.

Features

  • VIN Range 2.7V to 5.5V.
  • VOUT Range 0.6V to 5.5V (100% Duty Ratio Operation).
  • VREF = 0.6V.
  • ISD ≤ 5μA (VEN = 0V).
  • Current Mode Control, Internal Compensation.
  • Fixed FSW 2.25MHz.
  • RDS(ON) 230mΩ HS/250mΩ LS (P-MOSFET/ N-MOSFET).
  • Enable (VIH = 1V, VIL = 0.4V).
  • Internal Soft-Start (0.3ms).
  • Up to 600mA Output Current.
  • Up to 90% Efficiency.
  • Peak ILIMIT (1.5A Typical / 0.8A Min); UVLO; UVP; VIN and VOUT OVP; and OTP (150°C).
  • No Schottky Dio.

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Datasheet preview – RT2657BQ

Datasheet Details

Part number RT2657BQ
Manufacturer Richtek
File Size 171.33 KB
Description 2.25MHz 600mA Synchronous Step-Down Converter
Datasheet download datasheet RT2657BQ Datasheet
Additional preview pages of the RT2657BQ datasheet.

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Full PDF Text Transcription

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® RT2657BQ 2.25MHz 600mA Synchronous Step-Down Converter General Description The RT2657BQ is a high efficiency Pulse-WidthModulated (PWM) step-down DC/DC converter, capable of delivering 600mA output current over a wide input voltage range from 2.7V to 5.5V. The RT2657BQ is ideally suited for portable electronic devices that are powered from 1cell Li-ion battery or from other power sources such as cellular phones, PDAs, hand-held devices, game console and related accessories. The internal synchronous rectifier with low RDS(ON) dramatically reduces conduction loss at PWM mode. No external Schottky diode is required in practical applications.
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