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C2012X5R1H105 PDF预览

C2012X5R1H105

更新时间： 2024-11-04 12:54:39
品牌 Logo 应用领域
德州仪器 - TI 驱动器
页数 文件大小 规格书
36页 1202K
描述
High-Efficiency Three-String White LED Driver

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C2012X5R1H105 数据手册

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LM3697  
www.ti.com  
SNOSCS2A –NOVEMBER 2013–REVISED DECEMBER 2013  
High-Efficiency Three-String White LED Driver  
Check for Samples: LM3697  
1
FEATURES  
DESCRIPTION  
The LM3697 is a high-efficiency three string power  
source for backlight or keypad LEDs in smart-phone  
handsets. The high-voltage inductive boost converter  
provides the power for three series LED strings for  
display backlight and keypad functions (HVLED1,  
HVLED2 and HVLED3).  
•
Drives Three Parallel High-Voltage LED Strings  
for Display and Keypad Lighting  
•
High-Voltage Strings Capable of up to 40V  
Output Voltage and up to 90% Efficiency  
•
•
•
Up to 30 mA per Current Sink  
11-Bit Configurable Dimming Resolution  
An additional feature is a Pulse Width Modulation  
(PWM) control input for content adjustable backlight  
control, which can be used to control any high-  
voltage current sink.  
The LM3697 is fully configurable via an I2C-  
compatible interface. The device is available in a 12-  
bump (1.26 mm ± 30 µm x 1.61 mm ± 30 µm x 0.6  
mm ± 75 um) DSBGA and operates over a 2.7V to  
5.5V input voltage range and a −40°C to +85°C  
temperature range.  
PWM Input for Content Adjustable Brightness  
Control (CABC)  
•
•
Fully Configurable LED Grouping and Control  
Four Configurable Over-Voltage Protection  
Thresholds (16V, 24V, 32V, and 40V)  
•
•
Selectable 500 kHz and 1MHz Switching  
Frequency  
30 mm2 Total Solution Size  
APPLICATIONS  
•
•
Power Source for Smart Phone Illumination  
Display, Keypad and Indicator Illumination  
Typical Application Circuit  
L
D1  
VOUT up to 40V  
VIN = 2.7V to 5.5V  
CIN  
COUT  
IN  
SW  
OVP  
V
IN  
SDA  
SCL  
HVLED1  
HVLED2  
HVLED3  
HWEN  
PWM  
PGND  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
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.  
Copyright © 2013, Texas Instruments Incorporated  
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