Datasheet > NCP1521B

NCP1521B

更新时间： 2024-11-23 04:37:55

品牌	Logo	应用领域
安森美 - ONSEMI		转换器
页数	文件大小	规格书
14页	220K
描述
1.5 MHz, 600 mA Step−Down DC−DC Converter

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NCP1521B 数据手册

NCP1521B

1.5 MHz, 600 mA

Step−Down DC−DC

Converter

High−Efficiency, Low Ripple, Adjustable

Output Voltage

http://onsemi.com

The NCP1521B step−down PWM DC−DC converter is optimized

for portable applications powered from one cell Li−ion or three cell

Alkaline/NiCd/NiMH batteries. The part is available in adjustable

output voltage versions ranging from 0.9 V to 3.3 V. It uses

synchronous rectification to increase efficiency and reduce external

part count. The device also has a built−in 1.5 MHz (nominal)

oscillator which reduces component size by allowing smaller

inductors 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 NCP1521B is

available in space saving, low profile TSOP5 and UDFN6 packages.

Features

• Up to 96% Efficiency

MARKING

DIAGRAM

TSOP−5

SN SUFFIX

CASE 483

DBPAYWG

DBP

= Specific Device Code

= Assembly Location

= Year

= Work Week

= Pb−Free Package

(Note: Microdot may be in either location)

• Best−In−Class Ripple, including PFM Mode

• Sources up to 600 mA

• 1.5 MHz Switching Frequency

• Adjustable Output Voltage from 0.9 V to 3.3 V

• Synchronous Rectification for Higher Efficiency

• 2.7 V to 5.5 V Input Voltage Range

• Low Quiescent Current

UDFN6

MU SUFFIX

CASE 517AB

ZCMG

= Specific Device Code

= Date Code

= Pb−Free Package

(Note: Microdot may be in either location)

• Shutdown Current Consumption of 0.3 mA

• Thermal Limit Protection

ORDERING INFORMATION

• Short Circuit Protection

†

Device

Package

Shipping

• All Pins are Fully ESD Protected

NCP1521BSNT1G

TSOP−5 3000/Tape & Reel

(Pb−Free)

• This is a Pb−Free Device

Typical Applications

NCP1521BMUTBG

UDFN6 3000/Tape & Reel

• Cellular Phones, Smart Phones and PDAs

• Digital Still/Video Cameras

• MP3 Players and Portable Audio Systems

• Wireless and DSL Modems

• Portable Equipment

(Pb−Free)

†For information on tape and reel specifications,

including part orientation and tape sizes, please

refer to our Tape and Reel Packaging Specification

Brochure, BRD8011/D.

• USB Powered Devices

VOUT

VIN

CIN

VIN

OFF ON

GND LX

VIN

18 pF

VOUT

COUT

2.2 mH

GND

Cff

OFF ON

10 mF

GND

4.7 mF

VIN

Figure 1. Typical Application − TSOP−5

Figure 2. Typical Application − UDFN6

Semiconductor Components Industries, LLC, 2007

Publication Order Number:

NCP1521B/D

March, 2007 − Rev. 0

12 3 4 5 6 7...14

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与NCP1521B相关器件

型号	品牌	获取价格	描述	数据表
NCP1521B_10	ONSEMI	获取价格	1.5 MHz, 600 mA Step-Down DC-DC Converter
NCP1521BMUTAG	ONSEMI	获取价格	SWITCHING REGULATOR
NCP1521BMUTBG	ONSEMI	获取价格	1.5 MHz, 600 mA Step−Down DC−DC Converter
NCP1521BSNT1G	ONSEMI	获取价格	1.5 MHz, 600 mA Step−Down DC−DC Converter
NCP1522	ONSEMI	获取价格	3.0 MHz, 600 mA, High−Efficiency, Low Quiescent Current, Adjustable Output Voltage S
NCP1522ASNT1G	ONSEMI	获取价格	3.0 MHz, 600 mA, High−Efficiency, Low Quiescent Current, Adjustable Output Voltage S
NCP1522B	ONSEMI	获取价格	3 MHz, 600 mA Step-Down DC-DC Converter
NCP1522B_10	ONSEMI	获取价格	3 MHz, 600 mA Step-Down DC-DC Converter
NCP1522BMUTBG	ONSEMI	获取价格	3 MHz, 600 mA Step-Down DC-DC Converter
NCP1522BSNT1G	ONSEMI	获取价格	3 MHz, 600 mA Step-Down DC-DC Converter

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