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SC194A - 1A Synchronous Buck Converter

General Description

The SC194A is a synchronous step-down converter with integrated power devices.

The SC194A is designed for single-cell Li-Ion battery applications, but can also be used in fixed 3.3V or 5V applications.

Key Features

  • ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ Up to 93% efficiency Output current - 1A Input range - 2.7V to 5.5V Quiescent current - 17μA Four selectable output voltages Dynamic voltage positioning capability Fixed 1MHz frequency or 750kHz to 1.25MHz synchronized operation PSAVE operation to maximize efficiency at light loads Minimal external components Fast transient response 100% duty cycle in dropout Soft-start Over-temperature and short-circuit protection Space-saving lead-free package - MLP-10, 3 x 3mm Appli.

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Datasheet Details

Part number SC194A
Manufacturer SEMTECH
File Size 809.90 KB
Description 1A Synchronous Buck Converter
Datasheet download datasheet SC194A Datasheet

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Full PDF Text Transcription (Reference)

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SC194A 1A Synchronous Buck Converter with Integrated www.DataSheet4U.com Power Devices POWER MANAGEMENT Description The SC194A is a synchronous step-down converter with integrated power devices. The SC194A is designed for single-cell Li-Ion battery applications, but can also be used in fixed 3.3V or 5V applications. The switching frequency is nominally set to 1MHz, allowing the use of small inductors and capacitors. The 1.3A maximum current rating of the internal MOSFET switches allows a DC output current of 1A. The SC194A has a flexible clocking methodology that allows it to be synchronized to an external oscillator or controlled by the internal oscillator. The device can operate in either forced PWM mode or in PSAVE mode.