CS51313 datasheet(1/23 Pages) ONSEMI

Il numero della parte	CS51313

Spiegazioni elettronici	Synchronous CPU Buck Controller Capable of Implementing Multiple Linear Regulators

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July, 2006 − Rev. 8

1

Publication Order Number:

CS51313/D

CS51313

Synchronous CPU

Buck Controller Capable

of Implementing Multiple

Linear Regulators

The CS51313 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 CS51313

provides the industry’s most highly integrated solution, minimizing

external component count, total solution size, and cost.

The CS51313 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,

overvoltage protection, VCC monitor, Soft Start, adaptive voltage

positioning and adaptive FET non−overlap time. A precision reference

trimmed to 1.0% is also externally available for use by other

regulators. The CS51313 will operate over an 8.4 V to 14 V range and

is available in 16 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

• OVP Output Monitors Regulator Output

• Enable Through Use of the COMP Pin

• +1.23 V Reference Voltage Available Externally

http://onsemi.com

Device

Package

Shipping

ORDERING INFORMATION

CS51313GD16

SO−16

48 Units/Rail

CS51313GDR16

SO−16

2500 Tape & Reel

PIN CONNECTIONS

MARKING DIAGRAM

SO−16

D SUFFIX

CASE 751B

A

= Assembly Location

WL, L

= Wafer Lot

YY, Y

= Year

WW, W = Work Week

1

CS51313

AWLYWW

16

1

16

VCC

VOUT

1

16

GATE(H)

VFB

GND

VID4

GATE(L)

VREF

OVP

VID3

PWRGD

VID2

COFF

VID1

COMP

VID0

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