Programmable Synchronous Dc/dc Hysteretic Controller For Advanced Processors

The SC1154 is a synchronous-buck switch-mode con- troller designed for use in single ended power supply applications where efficiency is the primary concern. The controller is a hysteretic type, with a user se- lectable hysteresis. The SC1154 is ideal for imple- menting DC/DC converters needed to power advanced Microprocessors such as Pentium ll, in both single and multiple processor configurations. Inhibit, under- voltage lockout and soft-start functions are included for controlled power-up. SC1154 features include an integrated 5 bit D/A con- verter, temperature compensated Voltage Reference current limit Comparator over-current protection, and an adaptive deadtime circuit to prevent shoot-through of the Power MOSFET during switching transitions. Power good signaling, Logic compatible shutdown, and over-voltage protection are also provided. The inte- grated D/A Converter provides programmability of out- put voltage from 2.0V to 3.5V in 100mV increments and 1.3V to 2.05V in 50mV increments with no external components. The SC1154 high side driver CAN be configured as ei- ther a grounded reference or as a floating bootstrap driver. High and low side drivers have a peak current rating of 2 amps. By Semtech Corporation
SC1154 's PackagesSC1154 's pdf datasheet

SC1154 Pinout, Pinouts
SC1154 pinout,Pin out
This is one package pinout of SC1154,If you need more pinouts please download SC1154's pdf datasheet.

SC1154 Application circuits
SC1154 circuits
This is one application circuit of SC1154,If you need more circuits,please download SC1154's pdf datasheet.

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