Programmable Synchronous Dc/dc Hysteretic Controller With Vrm 9.0 Vid Range - Semtech Corporation

The SC1155 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 SC1155 is ideal for implement- ing DC/DC converters needed to power advanced mi- croprocessors such as Pentium llI and Athlon , in both single and multiple processor configurations. Inhibit, under-voltage lockout and soft-start functions are in- cluded for controlled power-up. SC1155 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 1.1V to 1.85V in 25mV increments. The SC1155 high side driver CAN be configured as either a grounded reference or as a floating bootstrap driver. The high and low side MOSFET drivers have a peak current rating of 2 amps. By Semtech Corporation
SC1155 's PackagesSC1155 's pdf datasheet
SC1155CSW.TR SO




SC1155 Pinout, Pinouts
SC1155 pinout,Pin out
This is one package pinout of SC1155,If you need more pinouts please download SC1155's pdf datasheet.

SC1155 Application circuits
SC1155 circuits
This is one application circuit of SC1155,If you need more circuits,please download SC1155's pdf datasheet.


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