Datasheet > LP5522TM

LP5522TM

更新时间： 2024-01-03 20:44:25

品牌	Logo	应用领域
美国国家半导体 - NSC		驱动器
页数	文件大小	规格书
14页	254K
描述
Programmable LED Driver

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数据手册

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LP5522TM 数据手册

June 2007

LP5522

Programmable LED Driver

General Description

The LP5522 is a simple single wire programmable LED con-

troller in six bump micro SMD package. It provides constant

current flow through high side driver. Output current can be

set from 1 mA to 20 mA by using an external resistor on the

ISET pin. If no external resistor is used, output current is set

to 5 mA default current. The LP5522 is controlled using only

one signal. The signal controls either directly the LED driver

or it launches previously programmed blinking sequence.

Features

Programmable blinking sequence

■

1 to 3 programmable pulses

1 ms to 255 ms LED on time

10 ms to 2500 ms LED off time

—

Single or continuous run of programmed blinking

sequence

Constant current high side output driver

Adjustable current with external resistor

0.2 uA typical shutdown current

■

The LP5522 works autonomously without a clock signal from

the master device. Very low LED driver headroom voltage

makes possible to use supply voltages close to LED forward

voltage. Current consumption of the LP5522 is minimized

when LED is turned off and once controller is disabled all

supporting functions are also shut down. Very small micro

SMD package together with minimum number of external

components is a best fit for handheld devices.

Autonomous operation without external clock

Micro SMD-6 package with 0.4 mm pitch:

1.215 mm x 0.815 mm x 0.6 mm (LxWxH)

Applications

Indicator lights

■

Phone cosmetics

Toys

Typical Application

20217201

202172

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