Datasheet > NCP3133A

NCP3133A

更新时间： 2024-09-17 01:20:03

品牌	Logo	应用领域
安森美 - ONSEMI		/
页数	文件大小	规格书
13页	128K
描述
Integrated Synchronous Buck Converter

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NCP3133A 数据手册

NCP3133A

3 A Integrated Synchronous

Buck Converter

NCP3133A is a fully integrated synchronous buck converter for

3.3 V and 5 V step−down applications. It can provide up to 3 A load

current. NCP3133A supports high efficiency, fast transient response

and provides power good indicator. The control scheme includes two

operation modes: FCCM and automatic CCM/DCM. In automatic

CCM/DCM mode, the controller can smoothly switch between CCM

and DCM, where converter runs at reduced switching frequency with

much higher efficiency. NCP3133A is available in 3 mm x 3 mm

QFN−16 pin package.

http://onsemi.com

QFN16 3 x 3, 0.5P

CASE 485DA

Features

SUGGESTED PIN ARRANGEMENT

• High Efficiency in both CCM and DCM

• High Operation Frequency at 1.1 MHz

• Support MLCC Output Capacitor

• Small Footprint, 3 mm x 3 mm, 16−pin QFN Package

• Up to 3 A Continuous Output Current

• 2.9 V to 5.5 V Wide Conversion Voltage Range

• Output Voltage Range from 0.6 V to 0.84 X Vin

• Internal 400 ms Soft−Start

PGND PGND VIN VIN

VDD

AGND

NCP3133A

PGD

VBST

• Automatic Power−Saving Mode

• Voltage Mode Control

COMP

• Support Pre-bias Start−up Functionality

• Output Discharge Operation

• Over−Temperature Protection

• Built−in Over−Voltage, Under−Voltage and Over-Current Protection

• Power Good Indicator

• This is a Pb−Free Device

SW SW SW PS

MARKING DIAGRAM

3133A

ALYWG

Applications

• 5 V Step Down Rail

• 3.3 V Step Down Rail

3133A = Specific Device Code

= Assembly Location

= Wafer Lot

= Year

= Work Week

= Pb−Free Package

(*Note: Microdot may be in either location)

ORDERING INFORMATION

See detailed ordering, marking and shipping information in the

package dimensions section on page 12 of this data sheet.

Publication Order Number:

September, 2014 − Rev. 1

NCP3133A/D

12 3 4 5 6 7...13

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