CS5211 datasheet(1/16 Pages) ONSEMI

Teilenummer	CS5211

Bauteilbeschribung	Low Voltage Synchronous Buck Controller

PDF	16 Pages

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Hersteller	ONSEMI [ON Semiconductor]

Direct Link	http://www.onsemi.com

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December, 2001 – Rev. 4

1

Publication Order Number:

CS5211/D

CS5211

Low Voltage Synchronous

Buck Controller

The CS5211 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

™ control architecture is used to achieve

unmatched transient response, the best overall regulation and the

simplest loop compensation. The CS5211 is in a 14–pin package to

allow the designer added flexibility.

The CS5211 provides overcurrent protection, undervoltage lockout,

Soft Start and built in adaptive nonoverlap. The CS5211 also provides

adjustable fixed frequency range of 150 kHz to 750 kHz. This gives

the designer more flexibility to make efficiency and component size

compromises. The CS5211 will operate over a 4.5 V to 14 V range

using either single of 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

• System Power Management

– 5.0 V or 12 V Operation

– Undervoltage Lockout

– On/Off Control Through Use of the COMP Pin

http://onsemi.com

MARKING

DIAGRAM

x

= E or G

A

= Assembly Location

WL, L

= Wafer Lot

YY, Y

= Year

WW, W

= Work Week

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

1

14

CS5211x

AWLYWW

See detailed ordering and shipping information in the package

dimensions section on page 14 of this data sheet.

ORDERING INFORMATION

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