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SY8401 - 0.8A Asynchronous Step Down Regulator

General Description

The SY8401 develops a high efficiency asynchronous step down DC/DC regulator capable of delivering 0.8A output current.

The IC adopts current mode adaptive constant off time control.

Key Features

  • Low RDS(ON) for Internal N-channel Power FET: 700mΩ.
  • 4.5-55V Input Voltage Range.
  • 0.8A Output Current Capability.
  • 1.2MHz Pseudo Constant Switching Frequency.
  • Internal Soft-start Limits the Inrush Current.
  • Hic-cup Mode Output Short Circuit Protection.
  • EN ON/OFF Control with Accurate Threshold.
  • Cycle by Cycle Peak Current Limit.
  • 0.6V±1 % Reference Voltage.
  • SOT23-6 Package.

📥 Download Datasheet

Datasheet Details

Part number SY8401
Manufacturer Silergy
File Size 949.06 KB
Description 0.8A Asynchronous Step Down Regulator
Datasheet download datasheet SY8401 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Application Note: SY8401 High Efficiency, 1.2MHz, 55V Input, 0.8A Asynchronous Step Down Regulator General Description The SY8401 develops a high efficiency asynchronous step down DC/DC regulator capable of delivering 0.8A output current. The IC adopts current mode adaptive constant off time control. The SY8401 operates over a wide input voltage range from 4.5V to 55V and integrates main switch with very low RDS(ON) to minimize the conduction loss. Low output voltage ripple and small external inductor and capacitor sizes are achieved with 1.2MHz switching frequency. Ordering Information SY8401 □(□□)□ Temperature Code Pa cka ge Code Optional Spec Code Ordering Number Package type Note SY8401ABC SOT23-6 -- Features • Low RDS(ON) for Internal N-channel Power FET: 700mΩ • 4.