Datasheet > NCP5425/D

NCP5425/D

更新时间： 2024-09-18 23:53:27

品牌	Logo	应用领域
其他 - ETC		控制器
页数	文件大小	规格书
22页	161K
描述
Dual Synchronous Buck Controller

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NCP5425/D 数据手册

NCP5425

Dual Synchronous

Buck Controller

The NCP5425 is a highly flexible dual buck controller with internal

gate drivers that can be used with two input power supplies and one or

two outputs in multiple configurations. The part contains all the

circuitry required for two independent synchronous dual NFET buck

regulators utilizing a feed forward voltage mode control method. The

NCP5425 can run from a single supply ranging from 4.6 to 12 volts

and support a single two phase or dual single phase outputs. When

used as a dual output controller, the second output tracks voltage

transients from the first. Power blanking for low noise applications is

supported as well as independent cycle−by−cycle current limiting. The

part is available in a 20−pin TSSOP package allowing the designer to

minimize PCB area.

http://onsemi.com

TSSOP−20

DB SUFFIX

CASE 948M

PIN CONNECTIONS AND

MARKING DIAGRAM

Features

• Operation Over 4.6 to 13.2 Volts

• Dual Synchronous Buck Design

GATEH1

GATEL1

GATEH2

GATEL2

• Configurable as a Single Two Phase Output or Two Single Phase

Outputs

GND

BST

IS+1

IS−1

NCP

5425

AWLYWW

OSC

• Programmable Power Sharing and Budgeting from Two Independent

Supplies

MODE

IS−2

IS+2

• 0.8 Volt "1% Reference for Low Voltage Outputs

• 1.5 A Peak Power Drive

REF2

FB1

FB2

COMP1

COMP2

• Switch Blanking for Noise Sensitive Applications through use of

OSC

= Assembly Location

WL = Wafer Lot

= Year

WW = Work Week

• Programmable Frequency, 150 kHz to 750 kHz Operation

• Programmable Soft Start

• Cycle−by−Cycle Overcurrent Protection

• Independent Programmable Current Limits

• 100% Duty Cycle for Fast Transient Response

• Internal Slope Compensation

ORDERING INFORMATION

Device

Package

Shipping

• Out−of−Phase Synchronization between the Controllers

• Input Undervoltage Lockout

• On/Off Enable through use of the COMP Pins

• Power Supply Sequencing

61 Units/Rail

NCP5425DB

TSSOP−20

2500 Units/Reel

NCP5425DBR2

Applications

• DDR Memory Power

• Graphics Cards

Semiconductor Components Industries, LLC, 2003

Publication Order Number:

December, 2003 − Rev. 4

NCP5425/D

12 3 4 5 6 7...22

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