CS5212GD14 datasheet(1/13 Pages) ONSEMI

Part #	CS5212GD14

Description	Low Voltage Synchronous Buck Controller

PDF	13 Pages

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Manufacturer	ONSEMI [ON Semiconductor]

Direct Link	http://www.onsemi.com

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July, 2006 − Rev. 4

1

Publication Order Number:

CS5212/D

CS5212

Low Voltage Synchronous

Buck Controller

The CS5212 is a low voltage synchronous buck controller. It

contains all required circuitry for a synchronous buck converter using

external N−Channel MOSFETs. High current internal gate drivers are

capable of driving high gate capacitance of low RDS(on) NFETs for

better efficiency. The V2

t control architecture is used to achieve

unmatched transient response, the best overall regulation and the

simplest loop compensation.

Additionally, the CS5212 provides overcurrent protection,

undervoltage lockout, soft−start, built−in adaptive non−overlap, and

an adjustable fixed frequency range of 150 kHz to 750 kHz, which

gives the designer more flexibility to make efficiency and component

size trade offs. The CS5212 will also operate over a 3.1 V to 7.0 V

range using either single or dual input voltage.

Features

• Switching Regulator Controller

− N−Channel Synchronous Buck Design

− V2 Control Topology

− 200 ns Transient Response

− Programmable Fixed Frequency of 150 kHz−750 kHz

− 1.0 V 1.5% Internal Reference

− Lossless Inductor Sensing Overcurrent Protection

− Hiccup Mode Short Circuit Protection

− Programmable Soft−Start

− 40 ns GATE Rise and Fall Times (3.3 nF Load)

− 70 ns Adaptive FET Nonoverlap Time

− Differential Remote Sense Capability

− Available in Industrial and Commerical Temperature Grades

• System Power Management

− 3.3 V Operation

− Undervoltage Lockout

− On/Off Control Through Use of the COMP Pin

• Pb−Free Packages are Available*

*For additional information on our Pb−Free strategy and soldering details, please

download the ON Semiconductor Soldering and Mounting Techniques

Reference Manual, SOLDERRM/D.

MARKING DIAGRAM

CS5212x =

Device Code

x = E or G

A

=

Assembly Location

WL

=

Wafer Lot

Y

=

Year

WW

=

Work Week

G=

Pb−Free Package

1

GATE(L)

PGND

SGND

VFB

GATE(H)

IS+

IS−

ROSC

VCC

PIN CONNECTIONS

VC

BST

LGND

VFFB

COMP

SOIC−14

D SUFFIX

CASE 751A

See detailed ordering and shipping information in the package

dimensions section on page 12 of this data sheet.

ORDERING INFORMATION

http://onsemi.com

CS5212x

AWLYWWG

1

14

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