SC1104A: Simple, Synchronous Voltage-Mode PWM Controller

The SC1104A/B is a versatile voltage-mode PWM controller designed for use in single ended DC/DC power supply applications. A simple, fixed frequency high efficiency buck regulator can be implemented using the SC1104A/B with a minimum of external components. Internal level shift and drive circuitry eliminates the need for an expensive P-channel, high-side switch. The small device footprint allows for compact circuit design.


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Features

  • Up to +14 V input, 300 kHz operation (SC1104A)
  • Up to +7 V input, 600 kHz operation (SC1104B)
  • High efficiency (> 90%)
  • 1% reference voltage accuracy
  • Hiccup mode over-current protection
  • Robust output drive
  • RDS(ON) Current sensing
  • Industrial temperature range
  • 8-Lead SOIC package.  Pb-free package available, fully WEEE and RoHS compliant

Diagrams

Typical Application Circuit

SC1104A - Typical Application Circuit

Click diagram to enlarge

Applications

  • Termination supplies
  • Low-cost microprocessor supplies
  • Peripheral card supplies
  • Industrial power supplies
  • High-density DC/DC conversion

Packaging

SOIC-8

Order Codes
  • SC1104AISTR: Package Minimum Tape & Reel Only
  • SC1104AISTRT: RoHS Compliant, Package Minimum Tape & Reel Only
  • SC1104BISTR: Package Minimum Tape & Reel Only
Order Sample Button
Pb-Free/RoHS/WEEE Status

Related Documents

Datasheets