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LM8502TMX/NOPB

更新时间： 2024-11-03 11:08:07
品牌 Logo 应用领域
德州仪器 - TI 驱动闪光灯驱动器
页数 文件大小 规格书
75页 2052K
描述
带 1.2A 双高侧 LED 闪光灯驱动器的智能照明管理单元 | YFQ | 30 | -30 to 85

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LM8502TMX/NOPB 数据手册

 浏览型号LM8502TMX/NOPB的Datasheet PDF文件第2页浏览型号LM8502TMX/NOPB的Datasheet PDF文件第3页浏览型号LM8502TMX/NOPB的Datasheet PDF文件第4页浏览型号LM8502TMX/NOPB的Datasheet PDF文件第5页浏览型号LM8502TMX/NOPB的Datasheet PDF文件第6页浏览型号LM8502TMX/NOPB的Datasheet PDF文件第7页 
LM8502  
Intelligent Lighting Management Unit That Fuses a 1.2A Dual High-Side  
Flash LED Driver with a 10-Output Low-Side LED Driver  
General Description  
Features  
The LM8502 is a versatile LED driver suitable for multiple ap-  
plications. It includes a 2MHz, fixed-frequency synchronous  
boost converter, 10 current sink LED outputs, 2 outputs for  
flash or haptic applications, ambient light sensing and PWM  
input.  
10 Programmable Low-Side Current Sinks with flexible  
●
powering from VOUT or external voltage source  
1.2A Dual Flash LED Driver with Flash, Torch and Voltage  
modes  
●
Ambient Light Sensing Capability with two inputs  
●
●
●
●
The 10 current sink LED outputs offer individual current con-  
trol through an I2C-compatible interface. Current can be ac-  
curately controlled with a full-scale setting and 8-bit current  
control. The LM8502 also enables LED control with group  
faders and lighting engines. Group faders enable single I2C  
register writes for multiple LED outputs with fading, whereas  
lighting engines with SRAM memory enable engine-driven  
lighting sequences. Each LED output can be powered either  
from VOUT or an external voltage supply.  
Up to 4000:1 dimming ratio for LED outputs  
Flash LED Thermal Sensing and Current Scaleback  
Hardware Flash, Torch Enable and Dual Synchronization  
Inputs for RF Power Amplifier Pulse Events  
Haptic Feedback Motor Driver  
●
●
Two Lighting Engines for User-Defined Lighting  
Sequences with 48 * 16 bits of SRAM memory  
External clock pin for Power Save  
●
●
The flash function is capable of driving 2 LEDs, each having  
600 mA maximum current, or a single LED up to a 1.2A max-  
imum current. A hardware flash enable provides a direct  
interface to trigger the flash pulse. Dual TX inputs allow the  
flash to be synchronized with the RF power system to prevent  
excessive current draw from the system power supply. The  
LM8502 also offers LED thermal sensing as a safety proce-  
dure for flash and separate indicator LED.  
External PWM Control Capability enabling for example  
Dynamic Backlight Control  
Fast I2C-Compatible Interface  
●
●
General Purpose ADC for Measuring, i.e., LED Output  
Voltages  
Ultra-Small Solution Area < 32 mm2  
●
●
30-bump (2.42 x 2.77 mm x 0.6 mm) 0.4 pitch micro SMD  
The LM8502 has two inputs for Ambient Light Sensing — to-  
gether with the PWM input they enable Dynamic Backlight  
Control. The LM8502 may also be used for haptic motor driv-  
ing instead of flash. When the device is idle, featured Power-  
save mode and use of an external clock reduce current  
consumption significantly.  
Applications  
Camera Phone LED Flash  
●
●
●
General Illumination in Portable Devices  
Haptic Feedback Motor Driver  
Fun Lighting  
●
PRODUCTION DATA information is current as of  
publication date. Products conform to specifications per  
the terms of the Texas Instruments standard warranty.  
Production processing does not necessarily include  
testing of all parameters.  
300787 SNVS592C  
Copyright © 1999-2012, Texas Instruments Incorporated  
1234567...75

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LM8502TMX/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LM8502TME/NOPB TI

完全替代

 带 1.2A 双高侧 LED 闪光灯驱动器的智能照明管理单元 | YFQ | 30 | -

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