Datasheet > NCP1423

NCP1423

更新时间： 2024-09-20 04:11:31

品牌	Logo	应用领域
安森美 - ONSEMI		转换器
页数	文件大小	规格书
13页	154K
描述
400 mA Sync−Rect PFM Step−Up DC−DC Converter with True−Cutoff and Ring−Killer

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NCP1423 数据手册

NCP1423

400 mA Sync−Rect PFM

Step−Up DC−DC Converter

with True−Cutoff and

Ring−Killer

http://onsemi.com

NCP1423 is a monolithic micropower high frequency step−up

switching converter IC specially designed for battery operated

hand−held electronic products. It integrates Synchronous Rectifier for

improving efficiency as well as eliminating the external Schottky

Diode. High switching frequency (up to 600 kHz) allows low profile

inductor and output capacitor being used. When the IC is disabled,

internal conduction path from LX or BAT to OUT is blocked, OUT pin

is isolated from the battery. This achieves True−Cutoff. Ring−Killer is

also integrated to eliminate the high frequency ringing in discontinuous

conduction mode. Low−Battery Detector, Cycle−by−Cycle Current

Limit, Overvoltage Protection and Thermal Shutdown provide

value−added features for various battery operated application. With all

of these functions ON, the quiescent supply current is only 9.0 mA. This

device is available in compact Micro10 package.

MARKING

DIAGRAM

Micro10

DM SUFFIX

CASE 846B

DAR

AYWG

DAR

= Device Code

= Assembly Location

= Year

Features

= Work Week

= Pb−Free Package

• High Efficiency: 92% for 3.3 V Output@ 400 mA from 2.5 V Input

87% for 1.8 V Output@ 70 mA from 1.2 V Input

• High Switching Frequency, up to 600 kHz (not hitting current limit)

• Low Quiescent Current of 9.0 mA

• Low Battery Detector

• 0.8 V Startup

• External Adjustable Output Voltage

(Note: Microdot may be in either location)

PIN CONNECTIONS

LBO

LBI

REF

•

1.5% Output Voltage Accuracy

Micro10

ADEN

• Ring−Killer for Discontinuous Conduction Mode

• Thermal Shutdown

GND

OUT

BAT

• 1.2 A Cycle−by−Cycle Current Limit

• Output Current up to 400 mA @ V

= 3.3 V,

(Top View)

OUT

200 mA @ V

= 1.8 V

OUT

• Overvoltage Protection

ORDERING INFORMATION

• Low Profile and Minimum External Part

• Open Drain Low−Battery Detector Output

• Compact Micro10 Package

†

Device

NCP1423DMR2

Package

Shipping

Micro10

4000 Tape & Reel

• Pb−Free Package is Available

Typical Applications

NCP1423DMR2G Micro10

(Pb−Free)

• Wireless Optical Mouse

†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.

• Wireless Headsets

• Internet Audio Players

• Personal Digital Assistants (PDAs)

• Hand−held Instruments

• Conversion from one/two NiMH or NiCd cells to 1.8 V / 3.3 V

Semiconductor Components Industries, LLC, 2006

Publication Order Number:

October, 2006 − Rev. 5

NCP1423/D

12 3 4 5 6 7...13

中文翻译

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与NCP1423相关器件

型号	品牌	获取价格	描述	数据表
NCP1423DM	ONSEMI	获取价格	SWITCHING REGULATOR, 600kHz SWITCHING FREQ-MAX, PDSO10, MICRO PACKAGE, 10 PIN
NCP1423DMR2	ONSEMI	获取价格	400 mA Sync−Rect PFM Step−Up DC−DC Converter with True−Cutoff and
NCP1423DMR2G	ONSEMI	获取价格	400 mA Sync−Rect PFM Step−Up DC−DC Converter with True−Cutoff and
NCP1442	ONSEMI	获取价格	4.0 A 280 kHz/560 kHz Boost Regulators
NCP1442/D	ETC	获取价格	4.0 A 280 kHz/560 kHz Boost Regulators
NCP1442FR4	ONSEMI	获取价格	4.0 A 280 kHz/560 kHz Boost Regulators
NCP1442FR4G	ONSEMI	获取价格	4.0 A 280 kHz/560 kHz Boost Regulators
NCP1442T	ONSEMI	获取价格	4.0 A 280 kHz/560 kHz Boost Regulators
NCP1442TG	ONSEMI	获取价格	暂无描述
NCP1443	ONSEMI	获取价格	4.0 A 280 kHz/560 kHz Boost Regulators

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