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SY8891 - 5.5V/1A Synchronous Step Down Regulator

Datasheet Summary

Description

The SY8891 is a high efficiency 1.5MHz synchronous step down DC/DC regulator, capable of delivering up to 1A output current.

It can operate over a wide input voltage range from 2.5V to 5.5V and integrate main switch and synchronous switch with very low RDS (ON) to minimize the conduction loss.

Features

  • 2.5V to 5.5V Input Voltage Range.
  • 55μA Low Quiescent Current.
  • Low RDS(ON) for Internal Switches (Top/Bottom): 170mΩ /100mΩ.
  • High Switching Frequency 1.5MHz Minimizes the External Components.
  • Internal Soft-start Limits the Inrush Current.
  • 100% Dropout Operation.
  • Power Good Indicator.
  • Hic-cup for Short Circuit Protection.
  • Output Auto Discharge Function.
  • RoHS Compliant and Halogen Free.
  • Compact Package: SOT563.

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Datasheet preview – SY8891

Datasheet Details

Part number SY8891
Manufacturer Silergy
File Size 774.82 KB
Description 5.5V/1A Synchronous Step Down Regulator
Datasheet download datasheet SY8891 Datasheet
Additional preview pages of the SY8891 datasheet.

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Full PDF Text Transcription

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SY8891 High Efficiency, 1.5MHz 5.5V/1A Synchronous Step Down Regulator General Description The SY8891 is a high efficiency 1.5MHz synchronous step down DC/DC regulator, capable of delivering up to 1A output current. It can operate over a wide input voltage range from 2.5V to 5.5V and integrate main switch and synchronous switch with very low RDS (ON) to minimize the conduction loss. The SY8891 is in a space saving, low profile SOT563 package. Ordering Information SY8891 □(□□)□ Tempera ture Code Pa cka ge Code Optional Spec Code Ordering Number Package type Note SY8891ARC SOT563 -- Typical Application VIN: 2.5-5.5V CIN 10μF/6.3V RPG 100k ON/ OFF L1:2.2µH VIN LX RH 100k PG FB RL 49.9k EN GND VOUT:1.8V Cff COUT 22pF 10μF/6.3V Figure1.
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