Datasheet > FAN5331_05

FAN5331_05

更新时间： 2024-11-11 04:18:11

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		驱动器开关
页数	文件大小	规格书
10页	582K
描述
High Efficiency Serial LED Driver and OLED Supply with 20V Integrated Switch

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FAN5331_05 数据手册

August 2005

FAN5331

High Efﬁciency Serial LED Driver and OLED Supply with

20V Integrated Switch

Features

Description

■ 1.6MHz Switching Frequency

The FAN5331 is a general purpose, ﬁxed-frequency boost con-

verter designed to operate at high switching frequencies in

order to minimize switching noise measured at the battery ter-

minal of hand-held communications equipment. Quiescent cur-

rent in normal mode of operation as well as in shutdown mode

is designed to be minimal in order to extend battery life. Normal

mode of operation or shutdown mode can be selected by a logic

level shutdown circuitry.

■ Low Noise

■ Low R

: 0.5Ω

DS(ON)

■ Adjustable Output Voltage

■ 1A Peak Switch Current

■ 1W Output Power Capability

■ Low Shutdown Current: <1µA

■ Cycle-by-Cycle Current Limit

■ Over-Voltage Protection

The low ON-resistance of the internal N-channel switch ensures

high efﬁciency and low power dissipation. A cycle-by-cycle cur-

rent limit circuit keeps the peak current of the switch below a

typical value of 1A. The FAN5331 is available in a 5-lead SOT-

23 package.

■ Fixed-Frequency PWM Operation

■ Internal Compensation

■ 5-lead SOT-23 Package

Applications

■ Cell Phones

■ PDAs

■ Handheld Equipment

■ Display Bias

■ LED Bias

Typical Application

BAT54

V_OUT

2.7V to 5.5V

V_IN

10µH

C_OUT

C_IN

4.7µF

C_F

V_IN

120pF

GND

SHDN

OFF

Figure 1.Typical Application Diagram

FAN5331 Rev. 1.0.1

www.fairchildsemi.com

12 3 4 5 6 7...10

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