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SY20018I - 1A Synchronous Step-Down Regulator

General Description

The SY20018I high-efficiency 1.5MHz synchronous step-down DC/DC regulator operates over a wide input voltage range of 2.5V to 5.5V, and can deliver an output current up to 1A with a low quiescent current of 50µA.

Key Features

  • 2.5V to 5.5V Input Voltage Range.
  • Up to 1A Output Current.
  • Low RDS(ON) for Internal Switches: 260mΩ Top, 160mΩ Bottom.
  • Low 50μA Quiescent Current.
  • High 1.5MHz Switching Frequency Minimizes Required External Components.
  • Constant-Off-Time and Peak-Current-Mode Control.
  • Internal Soft-Start Limits the Inrush Current.
  • 100% Dropout Operation.
  • Power-Good Indicator.
  • Hiccup Mode for Short-Circuit Protection.
  • Output Auto-Discharge Function.
  • RoHS.

📥 Download Datasheet

Datasheet Details

Part number SY20018I
Manufacturer Silergy
File Size 1.35 MB
Description 1A Synchronous Step-Down Regulator
Datasheet download datasheet SY20018I 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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SY20018I High-Efficiency, 1.5MHz,1A Synchronous Step-Down Regulator General Description The SY20018I high-efficiency 1.5MHz synchronous step-down DC/DC regulator operates over a wide input voltage range of 2.5V to 5.5V, and can deliver an output current up to 1A with a low quiescent current of 50µA. It integrates a main switch and a synchronous switch with very low RDS(ON) to minimize conduction loss. The 1.5MHz switching frequency allows for low output-voltage ripple, as well as small external inductor and capacitor values. The SY20018I is highly integrated, so only the input and output capacitors, inductor, and feedback resistors need to be selected for the targeted application specifications. The SY20018I is available in a compact SOT23-5 package. Features ● 2.5V to 5.