PWM Controllers
  • SC1102
  • Synchronous Voltage-Mode Controller for Distributed Power-Supply Applications
  • SC1103
  • Asynchronous Voltage-Mode PWM Controller for 12 V Input
  • SC1104A
  • Not Recommended For New Designs
  • SC1104B
  • Simple, Synchronous Voltage-Mode PWM Controller
  • SC1109
  • Synchronous PWM Controller With Dual Low-Dropout Regulator Controllers
  • SC1110
  • Sink and Source DC/DC Controller For Termination Power Supply Applications
  • SC1116
  • Linear FET Controller for DDR Supplies
  • SC1175
  • Low-Power Dual Synchronous DC/DC Controller with Current-Sharing Circuitry
Semtech SC2677B

Semtech SC2677B

Dual Synchronous Voltage-Mode Controller with Current-Sharing Circuitry

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The SC2677B is a versatile 2 phase, synchronous, voltage mode PWM controller that can be used in two distinct ways. First, the SC2677B is ideal for applications where point of use output power exceeds any single input power budget. Alternatively, the SC2677B can be configured as a dual switcher. The SC2677B features a precise temperature compensated voltage reference, cycle-by-cycle peak current limit, under voltage lockout over current protection, and internal level-shifted high-side gate drive circuitry.

Features


  • 300 kHz to 1 MHz externally programmable frequency operation
  • Soft start and enable function
  • Power-good output provided
  • Cycle-by-cycle peak current limit
  • Latch off for over-current protection
  • Phase-shifted switchers minimize ripple
  • High efficiency operation, > 90%
  • Programmable output(s) as low as 0.5 V
  • Industrial temperature range
  • Bias voltage as low as 4.5 V
  • Adjustable phase shift between channels
  • TSSOP-24 package
  • TSSOP-24 EDP package
  • Two Phase, Current Sharing Controller
    • Flexible, same or separate VIN
    • Programmable current sharing
    • Thermal distribution via multi-phase output

Applications


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

Packaging

TSSOP-24, TSSOP-24-EDP

Order Codes

  • SC2677BITSTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only
  • SC2677BTETRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only
 
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