Semtech SC1175
Low-Power Dual Synchronous DC/DC Controller with Current-Sharing Circuitry

Not recommended for new designs.
Overview
Features
- 300 kHz fixed frequency operation
- Soft start and enable function
- Power-good output provided
- Over-current protection with 50% fold-back
- Phase-shifted switchers minimize ripple
- High-efficiency operation, >90%
- Programmable output(s) as low as 1.25 V
- Industrial temperature range
- 20-pin SOIC or TSSOP package
- Two-Phase, Current-Sharing Controller
- Flexible, same or separate VINProgrammable current sharing
- Combined current limit with fold-back
- 2 phases operating opposed for ripple reduction
- Thermal distribution via multi-phase output
- Two Independent PWM Controllers
- Flexible, same or separate VIN
- Independent control for each channel
- Independent and separate current limit
- 2 phases operating opposed for ripple reduction (if same IN used)
Applications
- Graphics cards
- DDR memory
- Peripheral add-in card
- SSTL termination
- Dual-phase power supply
- Power supplies requiring two outputs
Packaging
- SOIC-20, TSSOP-20
Order Codes
- SC1175CSWTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only
- SC1175TSTR: Package Minimum Tape & Reel Only
- SC1175TSTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only