Switching Regulators
  • SC4525D
    • 18V, 3A, 350kHz Step-Down Switching Regulator
  • SC4525C
    • 28V 3A Step-Down Switching Regulator
  • SC4524D
    • 18V 2A Step-Down Switching Regulator
  • SC4524C
    • 28V 2A Step-Down Switching Regulator
  • SC427
    • 10A EcoSpeed® Integrated FET Regulator with Programmable LDO
  • SC417
    • 10A EcoSpeed® Integrated FET Regulator with Programmable LDO
  • SC410
    • 3A, 24V EcoSpeed® Step-Down Regulator with LDO and Ultrasonic Power Save
  • SC403B
    • 6A EcoSpeed® Integrated FET Regulator with Programmable LDO
Semtech SC403

Semtech SC403

6A EcoSpeed® Integrated FET Regulator with Programmable LDO

The SC403 is a stand-alone synchronous EcoSpeed® buck power supply which incorporates Semtech’s advanced patent-pending adaptive on-time control architecture to provide excellent light-load efficiency and fast transient response. It features integrated power MOSFETs, a bootstrap switch, and a programmable LDO in a 5x5mm package. The device is highly efficient and uses minimal PCB area.

Features


  • Power System:
    • Input voltage — 3V to 28V
    • Internal or external bias voltage — 3V to 5V
    • Integrated bootstrap switch
    • Programmable LDO output — 200mA
  • 1% reference tolerance -40 to +85 °C
  • EcoSpeedTM architecture with pseudo-fixed frequency adaptive on-time control
  • Logic Input/Output Control:
    • Independent control EN for LDO and switcher
    • Programmable VIN UVLO threshold
    • Power good output
    • Selectable ultrasonic power save mode
    • Programmable soft start time
  • Protections:
    • Over-voltage and under-voltage
    • TC compensated RDS(ON) sensed current limit
  • Thermal shutdown
  • Any ESR — SP, POSCAP, OSCON, and ceramic capacitors
  • Package:
    • Lead-free package — 5x5mm, 32-pin MLPQ
    • Fully RoHS/WEEE compliant and halogen free

Applications


  • Office automation and computing
  • Networking and telecommunication equipment
  • Point of load power supplies and module replacement

Packaging

  • MLPQ-32

Order Codes

  • SC403MLTRT - Available in tape and reel only. A reel contains 3000 devices.
  • SC403EVB: SC403 Evaluation Board