PWM Controllers
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  • SC419
    • Single Phase DC-DC Converter with Integrated Boost Diode
  • SC418
    • EcoSpeed® DC-DC Buck Controller with Programmable LDO
  • SC4911
    • Bias/Primary Side PWM Controller with Ultra-Low Start-up Current
  • SC4910B
    • High-Performance Secondary Side Controller with Synchronous Rectifier
  • SC4910A
    • High-Performance Secondary Side Controller with Synchronous Rectifier
  • SC4905B
    • High-Performance Voltage-Mode PWM Controller
  • SC4905A
    • High-Performance Voltage-Mode PWM Controller
Semtech SC470

Semtech SC470

Synchronous Buck Power Supply Controller for Dynamic Load-Voltage Applications

Not Recommended for New Designs - Last Day of purchase: 5/1/11

Features


  • Constant on-time for fast dynamic response
  • Programmable VOUT range = 0.5 – VCCA
  • VBAT range = 1.8V – 25V
  • DC current sense using low-side RDS(ON) sensing or RSENSE in source of low-side MOSFET for greater accuracy
  • Resistor programmable on-time
  • Cycle-by-cycle current limit
  • Digital soft-start
  • Combined EN and PSAVE functions
  • Over-voltage/under-voltage fault protection
  • and PGD output
  • 20% OVP threshold for simpler dynamic voltage transition circuitry
  • 5µA typical shutdown current
  • Low quiescent power dissipation
  • Industrial temperature range
  • 0.85% DC accuracy
  • Integrated gate drivers with soft-switching
  • 14 lead TSSOP and 16 pin MLPQ (4mm x 4mm) packages

Applications


  • Graphics Cards
  • Embedded Graphics Processors
  • High Performance Processors

Packaging

MLPQ-16, TSSOP-14

Order Codes

  • SC470IMLTRT: Lead-free, RoHS and WEEE compliant, 2500 pcs. Tape & Reel (MLPQ-16)
  • SC470ITSTRT: Lead-free, RoHS and WEEE compliant, 2500 pcs. Tape & Reel (TSSOP-14)