Description
The SC174 is an integrated, synchronous 4A EcoSpeedTM step-down regulator, which incorporates Semtech’s advanced, patented adaptive on-time architecture to achieve best-in-class performance in dynamic point-ofload applications. The input voltage range is 3V to 5.5V with a programmable output voltage from 0.75V up to 95% x V IN. The device features low-RDS(ON) internal switches and optional PSAVE mode for high efficiency across the output load range.

Features
■ VIN: 3V to 5.5V
■ VOUT: 0.75V to 95% x VIN
■ IOUT: Up to 4A
■ Low RDS(ON) Switches
    Up to 95% Peak Efficiency
■ 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
■ Ultrasonic Power Save
■ 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