Products
Power Management
Semtech SC194B
Selectable 3.6V/3.3V/3.0V/2.5V 1A Synchronous Buck Converter
The SC194B is a synchronous step-down converter with integrated power devices. Four selectable output voltages suitable for portable device interface, memory function blocks, and 5V to 3.3V voltage conversion are available.
Overview
Features
- Up to 95% efficiency
- PSAVE operation to maximize efficiency
- Output current — 1A
- Input range — 2.7V to 5.5V
- Four selectable output voltages
- Quiescent current — 17μA in PSAVE
- Dynamic voltage positioning capability
- Fixed 1MHz frequency or 750kHz to 1.25MHz synchronized operation
- Current mode operation for excellent line and load transient response
- 100% duty cycle in dropout
- Soft-start
- Over-temperature and short-circuit protection
- Lead-free package — 3mm x 3mm MLPD
Applications
- PDA
- Pocket PC and Smart Phones
- USB Powered Modems
- CPUs and DSPs
- PC Cards and Notebooks
- xDSL Applications
- Standard 5-V to 3.3-V Conversion
Packaging
MLP-10
Order Codes
- SC194BMLTRT: Lead-Free, RoHS and WEEE Compliant, 3000 pcs.Tape & Reel
Diagrams and Specs
Block Diagram
Click diagram to enlarge