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LR8421 - 500KHz Synchronous Boost Converter

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Datasheet Details

Part number LR8421
Manufacturer LRC
File Size 177.60 KB
Description 500KHz Synchronous Boost Converter
Datasheet download datasheet LR8421 Datasheet

Overview

5A, 500KHz Synchronous Boost Converter with Output Disconnect LESHAN RADIO COMPANY, LTD.

LR8421 Series „ INTRODUCTION: The LR8421 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.

Key Features

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

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