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CE8421 - 500KHz Synchronous Boost Converter

Description

Boost and Rectifying Switch Input.

pin and VIN.

to reduce EMI and voltage overshoot.

Features

  • S:.
  • Up to 90% Efficiency at IOUT=2A VOU T=5V from 3.3V Input.
  • Low Device Quiescent Current: 70μA (Max).
  • Guaranteed 2.5A Output Current at VOUT=5V from 3.3V Input.
  • 500kHz PWM Switching Frequency.
  • Synchronous and Embedded Power MOSFETs; No Schottky Diode Required.
  • Low RDS(ON) (main switch/synchronous switch) at 5.0V output: 35/42mohm.
  • Input Voltage Range: 1.8V to 5.25V.
  • Adjustable Output Voltage Range: from 2.5V to 5.5V.
  • Pulse Frequency Modulation Opera.

📥 Download Datasheet

Datasheet Details

Part number CE8421
Manufacturer Chipower
File Size 225.88 KB
Description 500KHz Synchronous Boost Converter
Datasheet download datasheet CE8421 Datasheet

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Other Datasheets by Chipower

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CE8301 Small Package PFM Control Step-Up DC/DC Converter
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
5A, 500KHz Synchronous Boost Converter with Output Disconnect CE8421 Series  INTRODUCTION: The CE8421 devices provide a power supply solution for products powered by either a one-cell Li-Ion or Li-polymer, or a two to three-cell alkaline, NiCd or NiMH battery. The converter generates a stable output voltage that is adjusted by an external resistor divider. It provides high efficient power conversion and is capable of delivering output currents up to 2.1A at 5V at a supply voltage down to 3V. The implemented boost converter is based on a fixed switching frequency (500kHz typical), current-mode controller using a synchronous rectifier to obtain maximum efficiency.
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