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AS1341 - Ultra low Ripple Step Down DC/DC Converter

Description

The AS1341 is a high-efficiency step-down converter with adjustable output voltages from 1.25V to VIN using supply voltages of up to 20V.

An integrated current-limited 0.4Ω MOSFET delivers load currents up to 600mA.

Features

  • Output Voltages: Fixed 5V or Adjustable Input Voltage Range: 4.5V to 20V Output Current: Up to 600mA 1.25V Lowest Output Voltage Efficiency: up to 96% Quiescent Supply Current: 12µA Power-OK Output Internal 0.4Ω P-Channel MOSFET Shutdown Current: 0.8µA 100% Maximum Duty Cycle for Low Dropout Current-Limited Architecture Thermal Shutdown TDFN-8 3x3mm Package 3.

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Datasheet Details

Part number AS1341
Manufacturer ams OSRAM
File Size 930.94 KB
Description Ultra low Ripple Step Down DC/DC Converter
Datasheet download datasheet AS1341 Datasheet

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Full PDF Text Transcription

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AS1341 650mA, Ultra low Ripple Step Down DC/DC Converter 1 General Description The AS1341 is a high-efficiency step-down converter with adjustable output voltages from 1.25V to VIN using supply voltages of up to 20V. An integrated current-limited 0.4Ω MOSFET delivers load currents up to 600mA. The AS1341 also includes a 100% duty cycle LDO mode with a low dropout of only 250mV for high efficiency if input voltages is in the range of the output voltage. The AS1341 has a low quiescent current (12µA) to improve lightload efficiency and minimize battery use, and draws only 0.8µA in shutdown mode. High switching frequencies (up to 200kHz) allow the use of small surface-mount inductors and output capacitors. The device is available in a TDFN-8 3x3mm pin package. Figure 1.
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