Datasheet > LX1992-CDU

LX1992-CDU

更新时间： 2024-11-20 23:48:55

品牌	Logo	应用领域
其他 - ETC		驱动器
页数	文件大小	规格书
11页	346K
描述
LED Driver

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中文翻译

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数据手册

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LX1992-CDU 数据手册

LX1992

High Efficiency LED Driver

L I N F I N I T Y D I V I S I O N

PRODUCTION

KEY FEATURES

DESCRIPTION

ꢀ > 90% Efficiency

The LX1992 is a compact high

Programming the output current is

ꢀ 80µA Typical Quiescent Supply

Current

efficiency step-up boost controller for readily achieved by using one external

driving white or color LEDs in current sense resistor in series with the

backlight or frontlight systems and LEDs. In this configuration, LED

offers designers maximum flexibility current provides a feedback signal to

with respect to efficiency and cost. the FB pin, maintaining constant 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 or 8-Pin

MLP

The LX1992 features

a pseudo- regardless of varying LED forward

hysteretic pulse frequency modulation voltage (V_F). Moreover, the LX1992 is

topology and uses an external N- capable of achieving output currents in

Channel MOSFET.

Further, the excess of 150mA, depending on the

LX1992 features control circuitry that MOSFET selected.

is optimized for portable systems (e.g.,

The LX1992 has an additional feature

quiescent supply current of 80µA for simple dynamic adjustment of the

(typ) and a shutdown current of less output current (i.e., up to 100% of the

APPLICATIONS/BENEFITS

than

1µA).

These

design maximum

programmed

current).

ꢀ Pagers

enhancements provide for improved Designers can make this adjustment via

performance in battery operated an analog reference signal or a direct

ꢀ Wireless Phones

ꢀ PDAs

systems applications.

PWM generated signal applied to the

ꢀ Handheld Computers

ꢀ General LCD Bias Applications

ꢀ LED Driver

The device input voltage range is ADJ pin and any PWM amplitude is

from 1.6V to 6.0, allowing for a wide easily accommodated with a single

selection of system battery voltages external resistor.

ꢀ Digital Camera Displays

and

start-up

operation

The LX1992 is available in both the 8-

Pin MSOP, and the miniature 8-Pin MLP

requiring minimal PCB area.

guaranteed at 1.6V input.

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

PRODUCT HIGHLIGHT

L₁

V_BAT= 1.6V to 6.0V

47µH

1206 Case Size

C₁

4.7µF

DRV

SRC

SHDN

ON OFF

LX1992

ADJ

GND

R_CS

4kΩ

V_F= 3.6V typ.

I_LED= 20mA to 0mA

R_SET

15Ω

PACKAGE ORDER INFO

Plastic MLP

8-Pin

LX1992CLM

Plastic MSOP

8-Pin

T_A(°C)

0 to 70

LX1992CDU

Note: Available in Tape & Reel.

Append the letter “T” to the part number. (i.e. LX1992CDUT)

Microsemi

Page 1

Rev. 1.1, 2002-11-21

Linfinity Microelectronics Division

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

12 3 4 5 6 7...11

中文翻译

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与LX1992-CDU相关器件

型号	品牌	获取价格	描述	数据表
LX1992CDUT	MICROSEMI	获取价格	LED Driver, 1-Segment, PDSO8, PLASTIC, MSOP-8
LX1992CDU-TR	MICROSEMI	获取价格	LED Driver, 1-Segment, PDSO8, LEAD FREE, PLASTIC, MSOP-8
LX1992CLM	MICROSEMI	获取价格	High Efficiency LED Driver
LX1992-CLM	ETC	获取价格	LED Driver
LX1992CLM-TR	MICROSEMI	获取价格	LED Driver, 1-Segment, PLASTIC, MLP-8
LX1992EVALKIT	ETC	获取价格	LED Driver
LX1993	MICROSEMI	获取价格	High Efficiency LED Driver
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

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