Datasheet > LP55281

LP55281

更新时间： 2024-11-22 11:10:35

品牌	Logo	应用领域
德州仪器 - TI		驱动驱动器
页数	文件大小	规格书
43页	790K
描述
具有 SPI/I2C 接口的 12 通道 RGB/白光 LED 驱动器

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LP55281

SNVS458D –JUNE 2007–REVISED OCTOBER 2016

LP55281 12-Channel RGB/White-LED Drive With SPI, I²C Interface

1 Features

3 Description

The LP55281 device is a quadruple RGB LED driver

•

Audio Synchronization for a Single Fun-Light LED

Four PWM Controlled RGB LED Drivers

High-Efficiency Boost DC-DC Converter

SPI or I²C-Compatible Interface

for handheld devices. It can drive 4 RGB LED sets

and a single fun-light LED. The boost DC-DC

converter drives high current loads with high

efficiency. The RGB driver can drive individual color

LEDs or RGB LEDs powered from boost output or

external supply. Built-in audio synchronization feature

allows user to synchronize the fun-light LED to audio

inputs. The flexible SPI or I²C interface allows easy

control of LP55281. A small YZR0036 or YPG0036

package, together with minimum number of external

components, is a best fit for handheld devices. The

LP55281 also has an LED test feature, which can be

used, for example, in production for checking the LED

connections.

Two Addresses in I²C-Compatible Interface

LED Connectivity Test Through the Serial

Interface

2 Applications

•

Cellular Phones

PDAs, MP3 Players

Device Information⁽¹⁾

PART NUMBER

PACKAGE

BODY SIZE (NOM)

LP55281

DSBGA (36)

2.982 mm × 2.982 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Typical Application

= 300...400 mA

MAX

boost

= 4...5.3V

OUT

4.7 mH

OUT

VDD

10 mF

RGB1

10 mF 100 nF

DD1

DD2

DDA

VDDA

1 éF

BATTERY

REF

100 nF

IRGB

IRT

RGB

RGB2

RGB3

RGB4

SI/A0

SCK/SCL

SS/SDA

NRST

LP55281

MCU

DDIO

VDDIO

IF_SEL

100 nF

ASE1

ASE2

ALED

AUDIO

GNDs

INPUTS

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

12 3 4 5 6 7...43

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