SC171
POWER MANAGEMENT
1A EcoSpeedTM Synchronous Step-Down Regulator with Optional Ultrasonic Power Save
Features
V...
SC171
POWER MANAGEMENT
1A EcoSpeedTM Synchronous Step-Down
Regulator with Optional Ultrasonic Power Save
Features
VIN: 3V to 5.5V VOUT: 0.75V to 95% x VIN IOUT: Up to 1A 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
Description
The SC171 is an integrated, synchronous 1A 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 VIN. The device features low-RDS(ON) internal switches and optional PSAVE mode for high efficiency across the output load range.
Adaptive on-time control provides programmable pseudo-fixed frequency operation and excellent transient performanc...