AX3519 Datasheet PDF (4A Synchronous Step-Down Converter)

AX3519 - 4A Synchronous Step-Down Converter

Description

The AX3519 is a 1MHz constant frequency current mode PWM step-down converter.

It is ideal for portable equipment requiring very high current up to 4A from single-cell Lithium-ion batteries while still achieving over 90% efficiency during peak load conditions.

Features

2.8V to 5.5V Input Voltage Range Output Voltages from 0.8V to VIN High Efficiency: Up to 94% 1MHz Constant Frequency Operation With power saving mode Up to 4A Output Current No Schottky Diode Required Current Mode Operation for Excellent Line and Load Transient Response Current limit and thermal shutdown protection Short Circuit Protect (SCP) Build-in Soft Start function ≤ 5µA Shutdown Current SOP-8L-EP and TDFN-8 Pb-Free packages 1/12 AXElite Confidential Materials, do not copy or distribute w.

Datasheet Details

Part number	AX3519
Manufacturer	AXElite
File Size	455.24 KB
Description	4A Synchronous Step-Down Converter
Datasheet	AX3519 Datasheet
Additional preview pages of the AX3519 datasheet.

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Full PDF Text Transcription

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AX3519 1MHz, 4A Synchronous Step-Down Converter  GENERAL DESCRIPTION The AX3519 is a 1MHz constant frequency current mode PWM step-down converter. It is ideal for portable equipment requiring very high current up to 4A from single-cell Lithium-ion batteries while still achieving over 90% efficiency during peak load conditions. The AX3519 also can run at 100% duty cycle for low dropout operation, extending battery life in portable systems while light load operation provides very low output ripple for noise sensitive applications. The AX3519 can supply up to 4A output load current from a 2.8V to 5.5V input voltage and the output voltage can be regulated as low as 0.8V. The high switching frequency minimizes the size of external components while keeping switching losses low.

Published: Jul 17, 2014 |