PWM Controllers
  • SC2604
    • Simple Boost PWM Controller with Input Disconnect FET Drive
  • SC415
    • Dual Synchronous Buck PWM Controller
  • SC418
    • DC-DC Buck PWM Controller with Programmable LDO
  • SC419
    • Single Phase DC-DC Converter with Integrated Boost Diode
  • SC454
    • Single-Phase Single Chip IMVP-6/6+ Vcore Power Supply
  • SC561
    • Dual Output Low Noise LDO Linear Regulator
  • SC810
    • Single Input/Single Mode Single-cell Li-ion Battery Charger
  • SCDAS4F
    • Standard Recovery, High Current Center Tap and Doubler Rectifier Assemblies
Semtech SC1176

Semtech SC1176

Dual Synchronous Voltage-Mode Controller with Current-Sharing Circuitry

 The SC1176 is a versatile 2 phase, synchronous, voltage mode PWM controller that may be used in two distinct ways. First, the SC1176 is ideal for applications where point of use output power exceeds any single input power budget.

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 .9 V
  • Industrial temperature range
  • SOIC-20 or TSSOP-20 pin Lead free package. This product is fully WEEE and RoHS compliant
Two Phase, Current Sharing Controller
  • Flexible, same or separate VIN
  • Programmable 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 VIN 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

  • SC1176ASWTR: Package Minimum Tape & Reel Only
  • SC1176ASWTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only
  • SC1176ATSTR: Package Minimum Tape & Reel Only
  • SC1176CSWTR: Package Minimum Tape & Reel Only
  • SC1176TSTR: Package Minimum Tape & Reel Only
  • SC1176TSTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only