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SY8009A Datasheet Synchronous Step-Down Regulator

Manufacturer: Silergy

Download the SY8009A datasheet PDF. This datasheet also includes the SY8009B variant, as both parts are published together in a single manufacturer document.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (SY8009B-Silergy.pdf) that lists specifications for multiple related part numbers.

General Description

The SY8009A and SY8009B are high-efficiency, high frequency synchronous step-down DC-DC regulator ICs capable of delivering up to 1.5A/2A output currents.

The SY8009 family operate over a wide input voltage range from 3V to 5.5V and integrate main switch and synchronous 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 greater than 1MHz switching frequency.

Overview

SY8009A/SY8009B High Efficiency 1.5MHz/1MHz, 1.5A/2A Synchronous Step Down Regulator.

Key Features

  • Low RDS(ON) for internal switches (top/bottom).
  • SY8009A: 180mΩ/120mΩ, 1.5A, SOT23-5.
  • SY8009B:100mΩ/80mΩ,2.0A SOT23-6, SSOT23-6.
  • 3-5.5V input voltage range.
  • High switching frequency minimizes the external components.
  • SY8009A: 1.5MHz.
  • SY8009B: 1MHz.
  • Internal softstart limits the inrush current.
  • 100% dropout operation.
  • RoHS Compliant and Halogen Free.
  • Compact package: SOT23-5, SOT23-6 and Super SOT23.

More Datasheets from Silergy

Part Number Description
SY8009 Synchronous Step-Down Regulator
SY8009B Synchronous Step-Down Regulator
SY8002A1 2A Synchronous Step Down Regulator
SY8002E1 2A Synchronous Step Down Regulator
SY8002I 2A Synchronous Step Down Regulator
SY8003 1MHz Synchronous Step Down Regulator
SY8003A 1MHz Synchronous Step Down Regulator
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SY8003C 3MHz Synchronous Step Down Regulator
SY8003E 1MHz Synchronous Step Down Regulator