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AX3523 - 0.8A Synchronous Step-Down Converter

Description

AX3523 is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture.

The device is available in an adjustable version.

Features

  • 2.5V to 6 V Input Voltage Range Output Voltage from 0.6V to VIN High Efficiency: Up to 95% 1.5MHz Constant Frequency Operation Up to 0.8A Output Current Quiescent Current: 250uA (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-23-5L and TDFN-6L Pb-Free packages 1/9 Axelite Confidential Materials, do not copy or distribute w.

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Datasheet preview – AX3523

Datasheet Details

Part number AX3523
Manufacturer AXElite
File Size 235.67 KB
Description 0.8A Synchronous Step-Down Converter
Datasheet download datasheet AX3523 Datasheet
Additional preview pages of the AX3523 datasheet.

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Full PDF Text Transcription

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AX3523 1.5MHz, 0.8A Synchronous Step-Down Converter  GENERAL DESCRIPTION AX3523 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 250uA and drops to <1uA in shutdown. The 2.5V to 6V input voltage range makes AX3523 ideally suited for single Li-Ion, two to four AA battery-powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems. PWM pulse skipping mode operation provides very low output ripple voltage for noise sensitive applications. Switching frequency is internally set at 1.5MHz, allowing the use of small surface mount inductors and capacitors.
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