AS1341 Buck Converter

HV DC-DC step-down converter 20V, 600mA


  • Input 4.5V to 20V with 12µA quiescent current
  • 600mA @ 1.25V to Vin
  • Power good signal


  • Industrial supply range
  • Flexible power rails
  • Supervisor function included

Product parameters

Input Voltage [V] 4.5 to 20
Output Voltage [V] 1.25 to Vin
Output Current [mA] 600
Efficiency [%] 96
Iq [µA] 12
Architecture Hysteretic, async.
fmax [kHz] <250
Enable/SHDN [/SHDN] Yes
Reset [POK] Yes
Features 100% duty cycle, fixed 5.0V output voltage, in adjustable variant adjustable in whole range
Package TDFN-8 (3x3)

General Description

The AS1341 is a hysteretic buck converter, capable of driving 600mA at 1.25V to Vin output. With efficiencies up to 96%, the device operates between 4.5V to 20V input.

Not Recommended for New Designs
ams AG is discontinuing production of this device.

This product suits for the following applications:

  • Notebook computers
  • Distributed power systems
  • Keep-alive supplies
  • Any other battery-operated, portable device


Title Category Headline Buy
AS1341EvalKit Application Board Evaluation Kit for AS1341

Technical Documents

Type Description Language
Datasheet Document version 1.09 English

Environmental Documents

Type Description Language
RoHS Certificate RoHS Certificate_AS1341 English


Type Description Language
EoL Notification AS2540, AS13xx, AS3668, AS3709, AS371x, AS7620 (issued 2019-Jun) English

Other Information

Type Description Language
Block Diagram AS1341 Block Diagram English