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LX1993

更新时间： 2024-11-21 04:19:27

品牌	Logo	应用领域
美高森美 - MICROSEMI		驱动器
页数	文件大小	规格书
12页	454K
描述
High Efficiency LED Driver

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中文翻译

获取价格

数据手册

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LX1993 数据手册

LX1993

High Efficiency LED Driver

I N T E G R A T E D P R O D U C T S

RODUCTION

KEY FEATURES

DESCRIPTION

> 80% Maximum Efficiency

70µA Typical Quiescent Supply

Current

Externally Programmable Peak

Inductor Current Limit For

Maximum Efficiency

Logic Controlled Shutdown

< 1µA Shutdown Current

Dynamic Output Current

Adjustment Via Analog

Reference Or Direct PWM Input

8-Pin MSOP Package

The LX1993 is a high efficiency

step-up boost converter that features a

psuedo-hysteretic pulse frequency

modulation topology for driving

white or color LEDs in backlight or

guaranteed at 1.6V input.

The LX1993 is capable of switching

currents in excess of 300mA and the

output current is readily programmed

using one external current sense

resistor in series with the LEDs. This

frontlight systems.

Designed for

maximum efficiency, reduced board

size, and minimal cost, the LX1993 is

ideal for PDA and digital camera

applications. The LX1993 features an

internal N-Channel MOSFET and

control circuitry that is optimized for

portable system design applications.

The LX1993 promotes improved

performance in battery-operated

systems by operating with a quiescent

supply current 70µA (typical) and a

shutdown current of less than 1µA.

The input voltage range is from 1.6V

to 6.0V thus allowing for a broad

configuration provides a feedback

signal to the FB pin thus maintaining

constant output current regardless of

varying LED forward voltage (V_F).

The LX1993 provides an additional

feature for simple dynamic adjustment

of the output current (i.e., up to 100%

of the maximum programmed current).

Designers can make this adjustment by

generating an analog reference signal

or a PWM signal applied directly to

the ADJ pin and any PWM amplitude

is readily accommodated via a single

external resistor. The LX1993 is

available in the 8-Pin MSOP and thus

requires a very small PCB area.

APPLICATIONS

Pagers

Wireless Phones

PDAs

Handheld Computers

LED Driver

Digital Camera Displays

selection

applications

battery

and start-up

voltage

IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com

PRODUCT HIGHLIGHT

OUT

SHDN

ON OFF

LX1993

Li-Ion

ADJ

GND

PACKAGE ORDER INFO

Plastic MSOP

8-Pin

T_A(°C)

RoHS Compliant / Pb-free

Transition DC: 0432

0 to 70

LX1993CDU

Note: Available in Tape & Reel. Append the letters “TR” to the part

number. (i.e. LX1993CDU-TR)

Rev. 1.0b, 2005-03-03

Microsemi

Page 1

Integrated Products Division

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

12 3 4 5 6 7...12

中文翻译

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与LX1993相关器件

型号	品牌	获取价格	描述	数据表
LX1993-02EVALKIT	ETC	获取价格	LED Driver
LX1993CDU	MICROSEMI	获取价格	High Efficiency LED Driver
LX1993CDUT	MICROSEMI	获取价格	暂无描述
LX1993EVALKIT	ETC	获取价格	LED Driver
LX1994	MICROSEMI	获取价格	High Efficiency LED Driver
LX1994_06	MICROSEMI	获取价格	High Efficiency LED Driver
LX1994CDU	MICROSEMI	获取价格	High Efficiency LED Driver
LX1994-CDU	MICROSEMI	获取价格	暂无描述
LX1994CDU-TR	MICROSEMI	获取价格	High Efficiency LED Driver
LX1994CLD	MICROSEMI	获取价格	High Efficiency LED Driver

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