Linear Regulators & Controllers
  • SC4212B
  • Very Low Input /Very Low Dropout 1 Amp Regulator
  • SC4212L
  • High PSRR, Very Low Input, Very Low Dropout, 1A Linear Regulator
  • TS14002
  • nanoSmart® Ultra-Low-Power Linear Regulator
  • TS31023
  • High Input Voltage Linear Regulator
  • TS31223
  • High Input Voltage Linear Regulator
  • EZ1082
  • 10.0 A Positive Voltage Regulator
  • EZ1083
  • 7.5 A Positive Voltage Regulator
  • EZ1084C
  • 5 Amp Low-Dropout Regulator
Semtech SC3203

Semtech SC3203

3A EcoSpeed® Step-Down Regulator with Power Save

Add to Watch List

The SC3203 is an integrated, synchronous 3A EcoSpeed® step-down regulator. It incorporates Semtech’s advanced, patented adaptive on-time architecture to achieve best-in-class dynamic performance using point-of-load applications. The input voltage range is 9V to 16V, and the output voltage is adjustable from 0.75V to 7.5V. The device features an internal LDO and automatic PSAVE mode for high efficiency across the output load range.


  • Input voltage — 9V to 16V
    • Programmable VIN UVLO
  • Output voltage adjustable from 0.75V to 7.5V
  • Output current — Up to 3A
  • Internal reference +/- 2%
  • Supports ceramic capacitors
  • Low component count
  • Power good output (open-drain)
  • Low RDS
  • ON mosfets
    • 65mohm low-side/100mohm high-side
  • ENABLE input
    • Programmable VIN UVLO and hysteresis
  • VIN Under-Voltage Lock Out
  • 500kHz switching frequency
  • Adaptive on-time control:
    • Excellent transient response
    • Pseudo-fixed frequency during CCM
  • Fault protection features:
    • Over-current/Over-voltage/Under-voltage
    • Over-temperature
    • Automatic Restart (Hiccup)
  • Internal soft-start
  • Start-up into pre-bias output
  • Power Save and Smart Power Save
  • Internal LDO for bias voltage
  • SOIC8-EP5 lead-free package
  • WEEE and RoHS compliant and halogen-free


  • Consumer Electronics, DTV and Set-top Boxes
  • Networking Equipment, Embedded Systems
  • Medical Equipment, Office Automation
  • Instrumentation, Portable Systems
  • Point of Load Converters


  • SOIC8-EP5

Order Codes

  • SC3203SETRC - WEEE and RoHS compliant, halogen-free. 3,000 pieces tape and reel
  • SC3203EVB - Evaluation Board
- Close -
Add Product to Watch List

Please login to the mySemtech member site to add products to your personal Watch List.

If you're not registered for mySemtech, please Register now. mySemtech member benefits include pre-filled forms for quick and easy online ordering, technical support, new product information and more.