Datasheet > NCP1529_10

NCP1529_10

更新时间： 2024-11-19 12:00:19

品牌	Logo	应用领域
安森美 - ONSEMI		转换器
页数	文件大小	规格书
16页	252K
描述
1.7MHz, 1A, High Efficiency, Low Ripple, Adjustable Output Voltage Step-down Converter

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中文翻译

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NCP1529_10 数据手册

NCP1529

1.7MHz, 1A, High Efficiency,

Low Ripple, Adjustable

Output Voltage Step-down

Converter

The NCP1529 step−down DC−DC converter is a monolithic

integrated circuit for portable applications powered from one cell

Li−ion or three cell Alkaline/NiCd/NiMH batteries. The device is able

to deliver up to 1.0 A on an output voltage range externally adjustable

from 0.9 V to 3.9 V or fixed at 1.2 V or 1.35 V. It uses synchronous

rectification to increase efficiency and reduce external part count. The

device also has a built−in 1.7 MHz (nominal) oscillator which reduces

component size by allowing a small inductor and capacitors. Automatic

switching PWM/PFM mode offers improved system efficiency.

Additional features include integrated soft−start, cycle−by−cycle

current limiting and thermal shutdown protection.

The NCP1529 is available in a space saving, low profile

2x2x0.5 mm UDFN6 package and TSOP−5 package.

Features

• Up to 96% Efficiency

• Best In Class Ripple, including PFM mode

• Source up 1.0 A

http://onsemi.com

MARKING

DIAGRAM

TSOP−5

SN SUFFIX

CASE 483

DXJAYWG

DXJ

= Specific Device Code

= Assembly Location

= Year

= Work Week

= Pb−Free Package

(Note: Microdot may be in either location)

UDFN6

MU SUFFIX

CASE 517AB

XXMG

• 1.7 MHz Switching Frequency

• Adjustable from 0.9 V to 3.9 V or Fixed at 1.2 V or 1.35 V

• Synchronous rectification for higher efficiency

• 2.7 V to 5.5 V Input Voltage Range

• Low Quiescent Current 28 mA

• Shutdown Current Consumption of 0.3 mA

• Thermal Limit Protection

= Specific Device Code

= Date Code

= Pb−Free Package

(Note: Microdot may be in either location)

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 14 of this data sheet.

• Short Circuit Protection

• All Pins are Fully ESD Protected

• These are Pb−Free Devices

Typical Applications

• Cellular Phones, Smart Phones and PDAs

• Digital Still Cameras

• MP3 Players and Portable Audio Systems

• Wireless and DSL Modems

• USB Powered Devices

• Portable Equipment

OUT

VIN

OUT

OFF ON

GND

Figure 1. Typical Application for Adjustable Version

Figure 2. Typical Application for Fixed Version

Publication Order Number:

September, 2010 − Rev. 5

NCP1529/D

12 3 4 5 6 7...16

中文翻译

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