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TPS61055DRCRG4 PDF预览

TPS61055DRCRG4

更新时间： 2024-11-24 14:45:15
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
27页 1077K
描述
500mA High Power White LED Driver with standard Logic Interface 10-SON -40 to 85

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TPS61055DRCRG4 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：,
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.82
接口集成电路类型：LED DISPLAY DRIVERJESD-609代码：e4
湿度敏感等级：2峰值回流温度（摄氏度）：260
端子面层：Nickel/Palladium/Gold (Ni/Pd/Au)处于峰值回流温度下的最长时间：NOT SPECIFIED
Base Number Matches：1

TPS61055DRCRG4 数据手册

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CSP-12  
QFN-10  
TPS61054, TPS61055  
www.ti.com .................................................................................................................................................. SLUS760A–SEPTEMBER 2007–REVISED MAY 2008  
HIGH POWER WHITE LED DRIVER  
2-MHz SYNCHRONOUS BOOST CONVERTER WITH STANDARD LOGIC INTERFACE  
1
FEATURES  
DESCRIPTION  
2
•
Four Operational Modes  
–
–
–
Torch and Flash up to ILED = 700 mA  
Voltage-Regulated Boost Converter: 5.0 V  
Shutdown: 0.3 µA (typ)  
The TPS6105x device uses  
a
high-frequency  
synchronous-boost topology with constant current  
sink to drive single white LEDs. The device uses an  
inductive fixed-frequency PWM control scheme using  
small external components, minimizing input ripple  
current.  
•
•
•
•
•
•
•
•
•
Total Solution Circuit Area < 25 mm2  
Up to 96% Efficiency  
Integrated LED Turn-On Safety Timer  
Zero Latency TX-Masking Input  
Integrated Low Light Dimming Mode  
LED Disconnect During Shutdown  
Open/Shorted LED Protection  
Over-Temperature Protection  
The 2-MHz switching frequency allows the use of  
small and low-profile 2.2-µH inductors. To optimize  
overall efficiency, the device operates with only a  
250-mV LED feedback voltage.  
The TPS6105x device not only operates as a  
regulated current source, but also as a standard  
voltage-boost regulator. This additional operating  
mode can be useful to supply other high-power  
devices in the system, such as a hands-free audio  
power amplifier, or any other component requiring a  
supply voltage higher than the battery voltage.  
Available in a 12-Pin NanoFree™ (CSP) and  
10-Pin QFN Packaging  
APPLICATIONS  
•
The LED current or the desired output voltage can be  
programmed via two logic signals (MODE0/1). To  
simplify flash synchronization with the camera  
Camera White LED Torch/Flash for Cell  
Phones, Smart-Phones and PDAs  
General Lighting Applications  
Audio Amplifier Power Supply  
•
•
module, the device offers  
a
trigger pin  
(FLASH_SYNC) for fast LED turn-on time.  
When the TPS6105x is not in use, it can be put into  
shutdown mode, reducing the input current to 0.3 µA  
(typ). During shutdown, the LED pin is high  
impedance to avoid leakage current through the LED.  
TPS61054  
4.7 mm  
L
+ BATTERY  
SW  
SW  
VOUT  
INDUCTOR  
2.2 mH  
C1  
COUT  
AVIN  
10 mF  
L1  
P
CIN  
LED  
SENSE  
P
P
PGND  
LED  
MODE1  
MODE0  
Tx-TOFF  
PGND  
FLASH_SYNC  
PGND  
PGND  
P
C2  
AGND  
LED ANODE  
Figure 1. Typical Application  
Figure 2. Typical PC-Board Layout  
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.  
2
NanoFree, PowerPAD are trademarks of Texas Instruments.  
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 © 2007–2008, Texas Instruments Incorporated  
1234567...27

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