PWM Controllers
  • SC461
    • 28V EcoSpeed® DC-DC Buck Controller with Integrated LDO and Hiccup Restart
  • SC508
    • 46V EcoSpeed® DC-DC Buck Controller with Integrated LDO
  • SC508A
    • 46V EcoSpeed® DC-DC Buck Controller with Integrated LDO, AEC-Q100 Qualified
  • SC531
    • Triple Low-side FET Driver with Digitally Controlled Current Limit
  • 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
Semtech SC493

Semtech SC493

EcoSpeed® Step-down Controller with I2C Interface

The SC493 is a synchronous EcoSpeed® buck power supply controller. It features an I2C interface and a bootstrap switch in a space-saving MLPQ 3X3-20 pin package. The SC493 uses Semtech’s advanced patented adaptive on-time control architecture to provide excellent light load efficiency and fast transient
response with small external components.

Features


  • Input supply voltage range — 3.0V to 28V
  • Controller supply voltage range — 3.0V to 5.5V
  • All ceramic solution enabled
  • I2C interface
  • Output voltage fine adjust control
  • Output voltage margining
  • Supports dynamic voltage transitions via the I2C interface
  • Programmable power-on delay time and soft-start time
  • EcoSpeed™ architecture with pseudo fixed-frequency adaptive on-time control
  • Switching frequency programmable up to 1MHz
  • Selectable power save, including ultrasonic
  • Non-synchronous start-up into pre-biased loads
  • Over-voltage/under-voltage fault protection
  • Smart power save
  • Power good Output
  • Smart drive™
  • Status register monitoring device operation
  • Ulrta-thin package — 3 x 3 x 0.6 (mm), 20 pin MLPQ-UT
  • Lead-free and halogen-free
  • WEEE and RoHS compliant
I2C — logo is a trademark of NXP B.V.

Applications


  • Printers
  • Computer peripherals

Packaging

  • MLPQ-UT-20

Order Codes

  • SC493ULTRT
  • SC493EVB; SC493 Evaluation Board