Datasheet > FAN2001

FAN2001

更新时间： 2024-10-01 21:53:55

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		转换器开关光电二极管
页数	文件大小	规格书
11页	330K
描述
1A High-Efficiency Step-Down DC-DC Converter

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FAN2001 数据手册

April 2005

FAN2001/FAN2002

1A High-Efﬁciency Step-Down DC-DC Converter

Features

Description

■ 96% Efﬁciency, Synchronous Operation

■ Adjustable Output Voltage Options from 0.8V to V

■ 2.5V to 5.5V Input Voltage Range

■ Up to 1A Output Current

Designed for use in battery-powered applications, the FAN2001/

FAN2002 is a high-efﬁciency, low-noise synchronous PWM cur-

rent mode and Pulse Skip (Power Save) mode DC-DC con-

verter. It can provide up to 1A of output current over a wide input

range from 2.5V to 5.5V. The output voltage can be externally

adjusted over a wide range of 0.8V to 5.5V by means of an

external voltage divider.

■ Fixed Frequency 1.3MHz PWM Operation

■ High Efﬁciency Power Save Mode

■ 100% Duty Cycle Low Dropout Operation

■ Soft Start

At moderate and light loads, pulse skipping modulation is used.

Dynamic voltage positioning is applied, and the output voltage is

shifted 0.8% above nominal value for increased headroom dur-

ing load transients. At higher loads the system automatically

switches over to current mode PWM control, operating at 1.3

MHz. A current mode control loop with fast transient response

ensures excellent line and load regulation. To achieve high efﬁ-

ciency and ensure long battery life, the quiescent current is

reduced to 25µA in Power Save mode, and the supply current

drops below 1µA in shut-down mode. The FAN2001/FAN2002 is

available in a 3x3mm 6-lead MLP package.

■ Output Over-Voltage Protection

■ Dynamic Output Voltage Positioning

■ 25µA Quiescent Current

■ Thermal Shutdown and Short Circuit Protection

■ Pb-Free 3x3mm 6-Lead MLP Package

Applications

■ Pocket PCs, PDAs

■ Cell Phones

■ Battery-Powered Portable Devices

■ Digital Cameras

■ Hard Disk Drives

■ Set-Top-Boxes

■ Point-of-Load Power

■ Notebook Computers

■ Communications Equipment

Typical Application

OUT

1.2V (1A)

3.3µH

C_IN

PGND

10K

Ω

(AGND)

C_OUT

2 x 10µF

Ω

5KΩ

PGND

(AGND)

10µF

V_OUT

3.3µH

1.2V (1A)

10KΩ

10µF

2 x 10µF

FAN2001

FAN2002

Figure 1.Typical Application

FAN2001/FAN2002 Rev. 1.0.2

www.fairchildsemi.com

12 3 4 5 6 7...11

中文翻译

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与FAN2001相关器件

型号	品牌	获取价格	描述	数据表
FAN2001MPX	FAIRCHILD	获取价格	1A High-Efficiency Step-Down DC-DC Converter
FAN2001MPX	ONSEMI	获取价格	高能效步降 DC-DC 转换器
FAN2002	FAIRCHILD	获取价格	1A High-Efficiency Step-Down DC-DC Converter
FAN2002MPX	FAIRCHILD	获取价格	1A High-Efficiency Step-Down DC-DC Converter
FAN2002MPX	ONSEMI	获取价格	高能效步降 DC-DC 转换器
FAN2011	FAIRCHILD	获取价格	1.5A Low Voltage Current Mode Synchronous PWM Buck Regulator
FAN2011_06	FAIRCHILD	获取价格	1.5A Low Voltage Current Mode Synchronous PWM Buck Regulator
FAN2011EMPX	ROCHESTER	获取价格	Switching Regulator, Current-mode, 1.5A, 1600kHz Switching Freq-Max, 3 X 3 MM, MO-229-WEEA
FAN2011EMPX	FAIRCHILD	获取价格	High-efficiency step-down DC/DC converter, 6LD, MLP, DUAL, JEDEC MO-229, 3MM SQUARE, 3000/
FAN2011EMPX_NL	FAIRCHILD	获取价格	Switching Regulator, Current-mode, 1.5A, 1600kHz Switching Freq-Max, 3 X 3 MM, LEAD FREE,

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