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Description

The SC173A is an integrated, synchronous 3A EcoSpeedTM step-down regulator, which incorporates Semtech’s advanced, patented adaptive on-time architecture to achieve best-in-class performance in dynamic point-of-load applications. The input voltage range is 3V to 5.5V with a programmable output voltage from 0.75V up to 95 x VIN. The device features low-RDS(ON) internal switches and automatic power save for high efficiency across the output load range.

Features

■ VIN: 3V to 5.5V

■ VOUT: 0.75V to 95 x VIN

■ IOUT: Up to 3A

■ Low RDS(ON) Switches

Up to 96 Peak Efficiency

■ Enable High Threshold: 1V

■ Compatible with Low Voltage Logic

■ High Output Accuracy

■ Small Ceramic Capacitors

■ Power Good Pin (Open-Drain)

■ Patented Adaptive On-Time Control:

Excellent Transient Response

Programmable Pseudo-fixed Frequency

■ Fault Protection Features:

Cycle-by-Cycle Current Limit

Short Circuit Protection

Over and Under Output Voltage Protection

Over-Temperature

■ Internal Soft start

■ Smart Power Save

■ Ultra-Small Lead-Free 3x3mm, 10-Pin MLPD Package

■ Fully WEEE and RoHS Compliant

Applications

■ Networking Equipment, Embedded Systems

■ Medical Equipment, Office Automation

■ Instrumentation, Portable Systems

■ Consumer Devices (DTV, Set-top Box, ... )

■ 5V POL Converters