NCP5211A

更新时间： 2024-11-26 10:28:03

品牌	Logo	应用领域
安森美 - ONSEMI		控制器
页数	文件大小	规格书
16页	122K
描述
Low Voltage Synchronous Buck Controller

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NCP5211A 数据手册

NCP5211A

Low Voltage Synchronous

Buck Controller

The NCP5211A 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

http://onsemi.com

capable of driving low R

NFETs for better efficiency. The

DS(on)

NCP5211A is in a 14 pin package to minimize PCB area.

The NCP5211A provides overcurrent protection, undervoltage

lockout, soft start and built in adaptive nonoverlap. The NCP5211A is

adjustable over a frequency range of 150 kHz to 750 kHz. This gives

the designer more flexibility to make efficiency and component size

compromises. The NCP5211A will operate on a single supply or a

separate boost supply.

MARKING

DIAGRAM

SOIC−14

D SUFFIX

CASE 751A

NCP5211A

BWLYWW

= Assembly Location

WL = Wafer Lot

= Year

Features

• Switching Regulator Controller

WW = Work Week

− N−Channel Synchronous Buck Design

− 1.0 Amp Gate Drive Capability

− 200 ns Transient Response

PIN CONNECTIONS

− Programmable Operating Frequency of 150 kHz−750 kHz

− 0.8 V 1% Internal Reference

− Lossless Inductor Sensing Overcurrent Protection

− Cycle−by−Cycle Short Circuit Protection

− Programmable Soft Start

GATE(H)

PGND

GATE(L)

BST

LGND

FFB

IS+

IS−

COMP

SGND

OSC

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

− 70 ns Adaptive FET Nonoverlap Time

− Differential Remote Sense Capability

• System Power Management

ORDERING INFORMATION

− Operation with a Conversion Rail of 5.0 V or 12 V

− Undervoltage Lockout

− On/Off Control Through Use of the COMP Pin

− Max Duty Cycle Clamped to 70% for Forward Converter Control

Device

Package

SO−14

Shipping†

NCP5211AD

55 Units/Rail

NCP5211ADR2

2500 Tape & Reel

†For information on tape and reel specifications,

including part orientation and tape sizes, please

refer to our Tape and Reel Packaging Specification

Brochure, BRD8011/D.

Applications

• Set Top Devices

• Forward Converters

• Buck Converters

• Point of Load Regulation

Semiconductor Components Industries, LLC, 2003

Publication Order Number:

December, 2003 − Rev. 3

NCP5211A/D

12 3 4 5 6 7...16

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