Programmable Synchronous Dc/dc Controller For Advanced Processors - Semtech Corporation

The SC1157 is a low-cost, full featured, synchronous voltage-mode controller designed for use in single ended power supply applications where efficiency is of primary concern. Synchronous operation allows for the elimination of heat sinks in many applications. The SC1157 is ideal for implementing DC/DC converters needed to power advanced Microprocessors such as Pentium ll (Klamath), in both single and multiple pro- cessor configurations. Internal level-shift, high-side drive circuitry, and preset shoot-thru control, allows for use of inexpensive n-channel Power Switches SC1157 features include an integrated 4-bit VID DAC temperature compensated Voltage Reference triangle wave Oscillator current limit Comparator frequency shift over-current protection, and an internally compen- sated error Amplifier The SC1157 operates at a fixed 140KHz, providing an optimum compromise between efficiency, external component size, and cost. By Semtech Corporation
SC1157 's PackagesSC1157 's pdf datasheet
SC1157CS.TR SO




SC1157 Pinout, Pinouts
SC1157 pinout,Pin out
This is one package pinout of SC1157,If you need more pinouts please download SC1157's pdf datasheet.

SC1157 circuits will be updated soon..., now you can download the pdf datasheet to check the circuits!

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