PWM Controllers
  • SC418
    • DC-DC Buck PWM Controller with Programmable LDO
  • SC419
    • Single Phase DC-DC Converter with Integrated Boost Diode
  • SC454
    • Single-Phase Single Chip IMVP-6/6+ Vcore Power Supply
  • SC493
    • Step-down Controller with I2C Interface
  • SX1239
    • Low Power Integrated UHF Receiver
  • SC4538
    • High Efficiency Boost Converter for up to 10 LEDs
  • SC4539
    • High Efficiency Boost Converter for up to 6 LEDS
  • SC561
    • Dual Output Low Noise LDO Linear Regulator
  • SC810
    • Single Input/Single Mode Single-cell Li-ion Battery Charger
  • SCDAS4F
    • Standard Recovery, High Current Center Tap and Doubler Rectifier Assemblies
Semtech SC4508A

Semtech SC4508A

Buck or Buck-Boost (Inverting) Current-Mode Controller

The SC4508A is a low voltage current mode switching regulator controller that drives a P-channel power MOSFET with programmable switching frequency. It can be configured in either buck or buck boost (inverting) converters.

Features


  • Wide input voltage range 2.7V to 15V
  • Programmable output voltage
  • Programmable switching frequency up to 1.5MHz
  • Buck or buck boost (inverting) configuration
  • Current mode control with slope compensation
  • Very low quiescent current in shutdown mode
  • Accessible reference voltage
  • Hiccup mode after 32 cycle-by-cycle OCP
  • 4mm x 4mm MLPQ-12 lead free package. This product is fully WEEE and RoHS compliant

Applications


  • Low power point of use converters
  • Single or multiple output low power converters
  • Positive and/or negative output voltage
  • DSL cards
  • Graphic cards
  • I/O cards
  • Negative bias supplies

Packaging

MLPQ-12

Order Codes

  • SC4508AMLTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only