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SC190 - Synchronous Buck Converter

General Description

The SC190 is a synchronous step-down converter with integrated power devices and an integrated front-end LDO to minimize input supply ripple.

Output voltage is programmable using two control bits, eliminating the need for feedback resistors tied to the output.

Key Features

  • Features.
  • Less than 1mV Supply Ripple.
  • Output Voltage Regulated by Either the Switching.
  • Regulator or Linear Regulator Dynamic Handover Between Linear and Switching Regulator for Maximum Efficiency 2.7V to 5.5V Input Range 300mA Guaranteed Output Current Fixed Frequency 1MHz Operation or 750kHz to 1.5MHz Clocked Operation No Schottky Diode Required Up to 95% Efficiency (VIN=BP) Over-current Protection Over-voltage Protection Over-temperature Protection Soft Start M.

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Datasheet Details

Part number SC190
Manufacturer SEMTECH
File Size 1.04 MB
Description Synchronous Buck Converter
Datasheet download datasheet SC190 Datasheet

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Other Datasheets by SEMTECH

Part Number Description
SC191 Low Supply Ripple Synchronous Buck Conversion Regulator
SC192 Synchronous Buck Converter
SC194A 1A Synchronous Buck Converter
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SC195 500mA Synchronous Step Down DC-DC Regulator

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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POWER MANAGEMENT Description The SC190 is a synchronous step-down converter with integrated power devices and an integrated front-end LDO to minimize input supply ripple. Output voltage is programmable using two control bits, eliminating the need for feedback resistors tied to the output. The device is offered in four distinct variants with each variant providing four fixed output voltage options to choose from. The front-end LDO can be bypassed externally to maximize efficiency. A second LDO is switched in place of the switching regulator for low current operation to further improve efficiency and reduce noise. SC190 Synchronous Buck Converter with Programmable Output www.DataSheet4U.