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CS51311

ON Semiconductor
Part Number CS51311
Manufacturer ON Semiconductor
Description Synchronous CPU Buck Controller
Published Apr 7, 2007
Detailed Description www.DataSheet4U.com CS51311 Synchronous CPU Buck Controller for 12 V and 5.0 V Applications The CS51311 is a synchronou...
Datasheet PDF File CS51311 PDF File

CS51311
CS51311

Overview
www.
DataSheet4U.
com CS51311 Synchronous CPU Buck Controller for 12 V and 5.
0 V Applications The CS51311 is a synchronous dual NFET Buck Regulator Controller.
It is designed to power the core logic of the latest high performance CPUs.
It uses the V2™ control method to achieve the fastest possible transient response and best overall regulation.
It incorporates many additional 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 lead narrow body surface mount package.
Features • Synchronous Switching Regulator Controller for CPU VCORE • Dual N−Channel MOSFET Synchronous Buck Design • V2 Control Topology • 200 ns Transient Loop Response • 5−Bit DAC with 1.
2% Tolerance • Hiccup Mode Overcurrent Protection • 40 ns Gate Rise and Fall Times (3.
3 nF Load) • 65 ns Adaptive FET Non−Overlap Time • Adaptive Voltage Positioning • Power Good Output Monitors Regulator Output • VCC Monitor Provides Undervoltage Lockout • Enable Through Use of the COMP Pin http://onsemi.
com SO−14 D SUFFIX CASE 751A 14 1 MARKING DIAGRAM 14 CS51311 AWLYWW 1 A WL, L YY, Y WW, W = Assembly Location = Wafer Lot = Year = Work Week PIN CONNECTIONS VID0 VID1 VID2 VID3 VID4 VFB VOUT 1 14 COMP COFF PWRGD GATE(L) GND GATE(H) VCC ORDERING INFORMATION Device CS51311GD14 CS51311GDR14 Package SO−14 SO−14 Shipping 55 Units/Rail 2500 Tape & Reel © Semiconductor Components Industries, LLC, 2006 July, 2006 − Rev.
3 1 Publication Order Number: CS51311/D CS51311 +12...


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