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AX3531 - 2A Synchronous Step-Down Converter

Description

AX3531 is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture.

The device is available in an adjustable version.

Features

  • 2.8V to 5.5V Input Voltage Range Output Voltage from 0.6V to VIN High Efficiency: Up to 96% 1.25MHz Constant Frequency Operation Up to 2A Output Current Quiescent Current: 200uA (Typical) No Schottky Diode Required Current Mode Operation for Excellent Line and Load Transient Response Current limit, Enable function Short Circuit Protect (SCP) Build in soft start function ≤ 1µA Shutdown Current TSOT-23-6L Pb-Free package 1/10 Axelite Confidential Materials, do not copy or distribute without writt.

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Datasheet preview – AX3531

Datasheet Details

Part number AX3531
Manufacturer AXElite
File Size 586.29 KB
Description 2A Synchronous Step-Down Converter
Datasheet download datasheet AX3531 Datasheet
Additional preview pages of the AX3531 datasheet.

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Full PDF Text Transcription

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AX3531 1.25MHz, 2A Synchronous Step-Down Converter  GENERAL DESCRIPTION AX3531 is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. The device is available in an adjustable version. Supply current with no load is 200uA and drops to <1uA in shutdown. The 2.8V to 5.5V input voltage range makes AX3531 ideally suited for single Li-Ion, two to three AA battery-powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems. Switching frequency is internally set at 1.25MHz, allowing the use of small surface mount inductors and capacitors. The internal synchronous switch increases efficiency and decreases need of an external schottky diode.
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