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LP55271TL/NOPB PDF预览

LP55271TL/NOPB

更新时间： 2024-11-18 19:47:15
品牌 Logo 应用领域
德州仪器 - TI 驱动接口集成电路
页数 文件大小 规格书
28页 494K
描述
Tiny LED Driver for Camera Flash and 4 LEDs with I<sup>2</sup>C Programmability, Connectivity Test 30-DSBGA -30 to 85

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LP55271TL/NOPB 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Obsolete包装说明：FBGA, BGA30,5X6,20
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：8.53
接口集成电路类型：LED DISPLAY DRIVERJESD-30 代码：R-PBGA-B30
JESD-609代码：e1湿度敏感等级：1
端子数量：30最高工作温度：85 °C
最低工作温度：-30 °C封装主体材料：PLASTIC/EPOXY
封装代码：FBGA封装等效代码：BGA30,5X6,20
封装形状：RECTANGULAR封装形式：GRID ARRAY, FINE PITCH
峰值回流温度（摄氏度）：260电源：3.6 V
认证状态：Not Qualified子类别：Display Drivers
标称供电电压：3.6 V表面贴装：YES
温度等级：OTHER端子面层：Tin/Silver/Copper (Sn/Ag/Cu)
端子形式：BALL端子节距：0.5 mm
端子位置：BOTTOM处于峰值回流温度下的最长时间：NOT SPECIFIED
Base Number Matches：1

LP55271TL/NOPB 数据手册

 浏览型号LP55271TL/NOPB的Datasheet PDF文件第2页浏览型号LP55271TL/NOPB的Datasheet PDF文件第3页浏览型号LP55271TL/NOPB的Datasheet PDF文件第4页浏览型号LP55271TL/NOPB的Datasheet PDF文件第5页浏览型号LP55271TL/NOPB的Datasheet PDF文件第6页浏览型号LP55271TL/NOPB的Datasheet PDF文件第7页 
LP55271  
www.ti.com  
SNVS460A –SEPTEMBER 2006–REVISED MAY 2013  
Tiny LED Driver for Camera Flash and Four LEDs With I2C Programmability, Connectivity  
Test, and Audio Synchronization  
Check for Samples: LP55271  
1
FEATURES  
APPLICATIONS  
2
•
High Current Boost DC-DC Converter  
(up to 1-A Output Current)  
•
Camera Flash, Funlight, and Backlight Driving  
in Battery-Powered Devices  
•
•
Programmable Boost Output Voltage  
DESCRIPTION  
370-mA Flash LED Constant-Current Driver  
With Low Tolerance and a Safety Circuit  
The LP55271 is a lighting management unit for  
handheld devices with I2C compatible control  
•
•
Synchronization Pin for Flash Timing  
interface. The LP55271 has  
a step-up DC/DC  
Two Single-Ended Audio Inputs With Gain  
Control  
converter with high current output and it drives  
display and keypad backlights and powers the  
camera flash LED. In addition the DC/DC converter  
has the output current to power for example an audio  
amplifier simultaneously. The chip has four 8-bit  
programmable high efficiency constant current LED  
drivers and a FLASH LED driver. Built-in audio  
synchronization feature allows the user to  
synchronize one of the LEDs to audio input.  
•
Four Constant-Current 15-mA LED Drivers  
With 8-Bit Programmable Brightness Control  
•
•
•
Audio Synchronization Feature  
I2C Compatible Control Interface  
Built-in LED Connectivity Test to Maximize  
Manufacturing Yield  
•
Small DSBGA-30 Package (2.5 mm x 3.0 mm x  
0.6 mm)  
Typical Application  
L
1
V
IN  
3.0 to 5.5V  
C
C
VDD2  
VDD1  
D
1
4.7 mH  
C
IN  
100 nF  
100 nF  
C
OUT1  
10 mF  
C
OUT2  
10 mF 10 mF  
AUDIO  
SIGNAL  
V
V
DD2  
DD1  
V
OUT  
C
SW1  
1
ASE1  
SW2  
FB  
47 nF  
C
2
ASE2  
LED1  
LED2  
LED3  
LED4  
47 nF  
AUDIO  
SIGNAL  
2
TEST  
INTERFACE  
LP55271  
CAMERA  
FLASH_SYNC  
FLASH  
IFLASH  
R
F
SDA  
SCL  
1.3 kW  
82 kW  
R
T
RT  
MCU  
NRST  
VREF  
C
VREF  
100 nF  
VDDA  
4.7 mF  
V
V
DDA  
DD_IO  
GNDs  
C
VDD_IO  
100 nF  
C
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.  
All trademarks are the property of their respective owners.  
2
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 © 2006–2013, Texas Instruments Incorporated  
1234567...28

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