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SY21072I - Synchronous Step Down Regulator

Datasheet Summary

Description

The SY21072I is a high efficiency, synchronous stepdown DC/DC converter capable of delivering 2A load current.

The SY21072I operates over a wide input voltage range from 4.2V to 18V and integrates main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss.

Features

  • Low RDS(ON) for Internal Switches (Top/Bottom): 130mΩ/105mΩ.
  • 4.2-18V Input Voltage Range.
  • 2A Output Current Capability.
  • 500kHz Switching Frequency Minimize the External Components.
  • Stable with 10µF COUT and 1.5µH Inductor.
  • Instant PWM Architecture to Achieve Fast Transient Responses.
  • Internal Soft-start Limits the Inrush Current.
  • Cycle-by-cycle Peak/Valley Current Limitation.
  • Hic-cup Mode Output Short Circuit Protection.
  • Thermal Shutdown with Au.

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Datasheet Details

Part number SY21072I
Manufacturer Silergy
File Size 0.97 MB
Description Synchronous Step Down Regulator
Datasheet download datasheet SY21072I Datasheet
Additional preview pages of the SY21072I datasheet.

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Full PDF Text Transcription

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SY21072I High Efficiency, Fast Response, 2.0A, 18V Input Synchronous Step Down Regulator General Description The SY21072I is a high efficiency, synchronous stepdown DC/DC converter capable of delivering 2A load current. The SY21072I operates over a wide input voltage range from 4.2V to 18V and integrates main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss. The SY21072I adopts the instant PWM architecture to achieve fast transient responses for high step down applications and high efficiency at light loads. In addition, it operates at pseudo-constant frequency of 500kHz to minimize the size of inductor and capacitor.
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