SC4601: Low-Input, High-Efficiency Synchronous Step-Down Controller

The SC4601 is a voltage mode step down (buck) regulator controller that provides accurate high efficiency power conversion from input supply range 2.75V to 5.5V. A high level of integration reduces external component count and makes it suitable for low voltage applications where cost size and efficiency are critical.


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Features

  • Progammable switching frequency up to 600KHz
  • BiCMOS voltage-mode PWM controller
  • 2.75 V to 5.5 V input voltage range
  • Output voltages as low as 0.8 V
  • ± 1% reference accuracy
  • Sleep mode (Icc = 10 µA typ)
  • Lossless adjustable over-current protection
  • Combination pulse-by-pulse & hiccup-mode current limit
  • High-efficiency synchronous switching
  • Up to to 100% duty cycle range
  • Synchronization to external clock
  • 10-Pin MSOP surface mount package. Available in Lead-free package, fully WEEE and RoHS compliant

Diagrams

Typical Application Circuit

SC4601 - Typical Application Circuit

Click diagram to enlarge

Applications

  • Distributed power architecture
  • Servers/workstations
  • Local microprocessor core power supplies
  • DSP and I/O power supplies
  • Battery-powered applications
  • Telecommunication equipment
  • Data processing applications

Packaging

MSOP-10

Order Codes
  • SC4601IMSTR: Package Minimum Tape & Reel Only
  • SC4601IMSTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only
Order Sample Button
Pb-Free/RoHS/WEEE Status

Related Documents

Datasheets