Datasheet > LP5524

LP5524

更新时间： 2024-11-21 11:39:07

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
10页	222K
描述
Parallel LED Driver with PWM Brightness Control in Micro SMD Package

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LP5524 数据手册

July 2007

LP5524

Parallel LED Driver with PWM Brightness Control in Micro

SMD Package

General Description

The LP5524 is a highly integrated dual-zone LED driver that

can drive up to four LEDs in parallel with a total output current

of 100mA. Regulated high side internal current sources de-

liver excellent current and brightness matching in all LEDs.

LED driver current sources are split into two independently

controlled banks for driving secondary displays, keypad and

indicator LEDs. Brightness control is achieved by applying

PWM signals to each enable pin. Default LED current is fac-

tory-programmable and an optional external resistor can be

used to set LED current to user programmable values.

Features

High side LED driver

■

Drives 4 LEDs with Up to 25mA per LED

Ultra-Small Solution Size:

No External Components

—

Micro SMD-9 Package with 0.4 mm pitch:

1.215mm x 1.215mm x 0.6mm (LxWxH)

0.4% Typical Current Matching

PWM Brightness Control

■

Over-Current Protection

LP5524 is available in National’s tiny 9-bump thin micro SMD

package.

Wide Input Voltage Range: 2.7V to 5.5V

Applications

Sub display Backlight

■

Keypad LED Backlight

Indicator LED

Typical Application

30007601

300076

www.national.com

12 3 4 5 6 7...10

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