Products
Power Management
Semtech SC190
Synchronous Buck Converter with Programmable Output
The SC190 is a synchronous step-down converter with integrated power devices and an integrated front-end LDO to minimize input supply ripple. Output voltage is programmable using two control bits, eliminating the need for feedback resistors tied to the output. The device is offered in four distinct variants with each variant providing four fixed output voltage options to choose from.
Overview
Features
- Less than 1mV Supply Ripple
- Output Voltage Regulated by Either the Switching Regulator or Linear Regulator
- Dynamic Handover Between Linear and Switching Regulator for Maximum Efficiency
- 2.7V to 5.5V Input Range
- 300mA Guaranteed Output Current
- 10µA quiescent current at light loads
- Fixed Frequency 1MHz Operation or 750kHz to 1.5MHz Clocked Operation
- No Schottky Diode Required
- Up to 95% Efficiency (VIN=BP)
- Over-current Protection
- Over-voltage Protection
- Over-temperature Protection
- Soft Start
- Low Output Noise < 100µVrms
- MLP-10, 3 x 3mm Lead-frame, Lead-free Package
Applications
- Cell Phones
- Cordless Phones
- Notebook and Subnotebook Computers
- PDAs and Mobile Communicators
- WLAN Peripherals
- 1 Li-Ion or 3 NiMH/NiCd Powered Devices
Packaging
MLP-10
Order Codes
- SC190AIMLTRT: Lead-free, RoHS and WEEE compliant, 3000 pcs. Tape & Reel
- SC190BIMLTRT: Lead-free, RoHS and WEEE compliant, 3000 pcs. Tape & Reel
- SC190CIMLTRT: Lead-free, RoHS and WEEE compliant, 3000 pcs. Tape & Reel
- SC190DIMLTRT: Lead-free, RoHS and WEEE compliant, 3000 pcs. Tape & Reel
Diagrams and Specs
Block Diagram
Click diagram to enlarge