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SY8843L Datasheet Ultra Fast Dynamic Response Synchronous Step Down Regulator

Manufacturer: Silergy

Overview: SY8843/SY8843L High Efficiency 1.5MHz, 3A Ultra Fast Dynamic Response Synchronous Step Down Regulator.

This datasheet includes multiple variants, all published together in a single manufacturer document.

General Description

The SY8843 and SY8843L are high efficiency 1.5MHz synchronous step down DC/DC regulators capable of delivering up to 3A output current.

The SY8843 and SY8843L can operate over a wide input voltage range from 2.7V to 5.5V and integrate main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss.

Low output voltage ripple, small external inductor and capacitor sizes are achieved with 1.5MHz switching frequency.

Key Features

  • 2.7~5.5V Input Voltage Range.
  • 65µA Low Quiescent Current.
  • Ultra Fast Load Transient Speed.
  • Low RDS(ON) for Internal Switches (Top/Bottom) 85mΩ /50mΩ.
  • High Switching Frequency 1.5MHz Minimizes the External Components.
  • Internal Soft-start Limits the Inrush Current.
  • Reliable Short Circuit Protection  SY8843: Hic-cup Mode Protection  SY8843L: Latch Off Protection.
  • Reliable OVP and OTP Protection  SY8843: No Latch Off Protection  SY8843L: Latch Off Protect.

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