CS51311 - ON Semiconductor

CS51311 Synchronous CPU Buck Controller

PACKAGE PIN # SO−14 1, 2, 3, 4, 5 PIN SYMBOL VID0−VID4 FUNCTION Voltage ID DAC inputs. These pins are internally pulled up to 5.65 V if left open. VID4 selects the DAC range. When VID4 is high (logic one), the Error Amp reference range is 2.125 V to 3.525 V with 100 mV increments. When VID4 is low (logic zero), the Error Amp reference voltage is 1.325 V to 2.

Features

required to ensure the proper operation and protection of the CPU and Power system. The CS51311 provides the industry’s most highly integrated solution, minimizing external component count, total solution size, and cost. The CS51311 is specifically designed to power Intel’s Pentium® II processor and includes the following features: 5−bit DAC with 1.2% tolerance, Power Good output, overcurrent hiccup mode protection, VCC monitor, soft start, adaptive voltage positioning, adaptive FET non−overlap time, and remote sense. The CS51311 will operate over an 8.4 V to 14 V range and is available in 14 .