Datasheet > LP5523TMX

LP5523TMX

更新时间： 2024-01-19 06:14:56

品牌	Logo	应用领域
德州仪器 - TI		驱动器
页数	文件大小	规格书
47页	600K
描述
Programmable 9-Output LED Driver

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中文翻译

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数据手册

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LP5523TMX 数据手册

March 1, 2012

LP5523

Programmable 9-Output LED Driver

General Description

Features

The LP5523 is a 9-channel LED driver designed to produce

lighting effects for mobile devices. A high-efficiency charge

pump enables LED driving over full Li-Ion battery voltage

range. The device is equipped with an internal program mem-

ory, which allows operation without processor control.

Three independent program execution engines, 9

programmable outputs with 25.5 mA full-scale current, 8-

bit current setting resolution and 12-bit PWM control

resolution

■

Adaptive high-efficiency 1x/1.5x fractional charge pump -

efficiency up to 94%

■

The LP5523 maintains excellent efficiency over a wide oper-

ating range by autonomously selecting the best charge pump

gain based on LED forward voltage requirements. LP5523 is

able to automatically enter power-save mode when LED out-

puts are not active, thus lowering idle current consumption

down to 10 µA (typ).

The LP5523 has an I²C-compatible control interface with four

pin selectable addresses. The device has a flexible General

Purpose Output (GPO), which can be used as a digital control

pin for other devices. INT pin can be used to notify processor

when a lighting sequence has ended (interrupt -function). Al-

so, the device has a trigger input interface, which allows

synchronization, for example, between multiple LP5523 de-

vices.

LED drive efficiency up to 93%

■

Charge pump with soft start and over-current/short-circuit

protection

Built-in LED test

■

200 nA typical standby current

Automatic power save mode; I_VDD= 10 µA (typ.)

Two-wire I²C-compatible control interface

Flexible instruction set

Large SRAM program memory

Small application circuit

Source (high-side) drivers

Architecture supports color control

The device requires only four small and low-cost ceramic ca-

pacitors. The LP5523 is available in a tiny 25-bump 2.27 mm

x 2.27 mm x 0.60 mm micro SMD package (0.4 mm pitch).

Applications

Fun lights and indicator lights

■

LED backlighting

Haptic feedback

Programmable current source

Typical Application

30043601

300436 SNVS550C

www.ti.com

12 3 4 5 6 7...47

中文翻译

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与LP5523TMX相关器件

型号	品牌	获取价格	描述	数据表
LP5523TMX/NOPB	TI	获取价格	具有内部程序存储器和集成电荷泵的 9 通道 RGB/白光 LED 驱动器 - DSBGA
LP5524	NSC	获取价格	Parallel LED Driver with PWM Brightness Control in Micro SMD Package
LP5524	TI	获取价格	具有双路 PWM 亮度控制功能的 4 通道 LED 驱动器
LP5524TM-5	NSC	获取价格	Parallel LED Driver with PWM Brightness Control in Micro SMD Package
LP5524TM-5/NOPB	TI	获取价格	具有双路 PWM 亮度控制功能的 4 通道 LED 驱动器 \| YFQ \| 9 \| -40
LP5524TMX-5	NSC	获取价格	Parallel LED Driver with PWM Brightness Control in Micro SMD Package
LP5524TMX-5/NOPB	TI	获取价格	具有双路 PWM 亮度控制功能的 4 通道 LED 驱动器 \| YFQ \| 9 \| -40
LP5526	NSC	获取价格	Lighting Management Unit with High Voltage Boost Converter with up to 150mA Serial FLASH L
LP5526TL	NSC	获取价格	Lighting Management Unit with High Voltage Boost Converter with up to 150mA Serial FLASH L
LP5526TLX	NSC	获取价格	Lighting Management Unit with High Voltage Boost Converter with up to 150mA Serial FLASH L

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