Datasheet > NCP3170

NCP3170

更新时间： 2024-11-09 12:24:59

品牌	Logo	应用领域
安森美 - ONSEMI		转换器开关
页数	文件大小	规格书
25页	701K
描述
Synchronous PWM Switching Converter

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中文翻译

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NCP3170 数据手册

NCP3170

Synchronous PWM

Switching Converter

The NCP3170 is a flexible synchronous PWM Switching Buck

Regulator. The NCP3170 operates from 4.5 V to 18 V, sourcing up to

3 A and is capable of producing output voltages as low as 0.8 V. The

NCP3170 also incorporates current mode control. To reduce the

number of external components, a number of features are internally set

including soft start, power good detection, and switching frequency.

The NCP3170 is currently available in an SOIC−8 package.

http://onsemi.com

Features

SOIC−8 NB

• 4.5 V to 18 V Operating Input Voltage Range

• 90 mW High−Side, 25 mW Low−Side Switch

• FMEA Fault Tolerant During Pin Short Test

• 3 A Continuous Output Current

• Fixed 500 kHz and 1 MHz PWM Operation

• Cycle−by−Cycle Current Monitoring

• 1.5% Initial Output Accuracy

• Internal 4.6 ms Soft−Start

CASE 751

MARKING DIAGRAM

3170x

ALYW

3170x = Specific Device Code

x = A or B

• Short−Circuit Protection

• Turn on Into Pre−bias

= Assembly Location

= Wafer Lot

= Year

= Work Week

= Pb−Free Package

• Power Good Indication

• Light Load Efficiency

• Thermal Shutdown

• These are Pb−Free Devices

PIN CONNECTIONS

Typical Applications

• Set Top Boxes

PGND

• DVD/ Blu−ray™ Drives and HDD

• LCD Monitors and TVs

• Cable Modems

AGND

COMP

(Top View)

• PCIe Graphics Cards

• Telecom/Networking/Datacom Equipment

• Point of Load DC/DC Converters

ORDERING INFORMATION

†

Device

Package

Shipping

NCP3170ADR2G

SOIC−8 2500 / Tape & Reel

(Pb−Free)

22 mF

VIN

L1 4.7 mH

VSW

NCP3170BDR2G

SOIC−8 2500 / Tape & Reel

(Pb−Free)

3.3 V

NCP3170

†For information on tape and reel specifications,

including part orientation and tape sizes, please

refer to our Tape and Reel Packaging Specifications

Brochure, BRD8011/D.

C2, C3

22 mF

COMP

FB1

AGND

PGND

Figure 1. Typical Application Circuit

Publication Order Number:

August, 2011 − Rev. 1

NCP3170/D

12 3 4 5 6 7...25

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