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

• 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

• Flexible, same or separate V_IN
• Programmable current sharing
• Combined current limit with fold-back
• 2 phases operating opposed for ripple reduction
• Thermal distribution via multi-phase output

• Flexible, same or separate V_IN
• Independent control for each channel
• Independent and separate current limit
• 2 phases operating opposed for ripple reduction (if same _IN used)

Typical Application Circuit

Click diagram to enlarge

• Graphics cards
• DDR memory
• Peripheral add-in card
• SSTL termination
• Dual-phase power supply
• Power supplies requiring two outputs

SOIC-20, TSSOP-20

• 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