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TPS61165_17

更新时间： 2024-11-15 02:58:23
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德州仪器 - TI /
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26页 861K
描述
High-Brightness, White LED Driver in WSON and SOT-23 Packages

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TPS61165_17 数据手册

 浏览型号TPS61165_17的Datasheet PDF文件第2页浏览型号TPS61165_17的Datasheet PDF文件第3页浏览型号TPS61165_17的Datasheet PDF文件第4页浏览型号TPS61165_17的Datasheet PDF文件第5页浏览型号TPS61165_17的Datasheet PDF文件第6页浏览型号TPS61165_17的Datasheet PDF文件第7页 
TPS61165  
www.ti.com  
SLVS790A –NOVEMBER 2007–REVISED MAY 2010  
High Brightness White LED Driver in 2mm x 2mm  
QFN and SOT-23 Packages  
Check for Samples: TPS61165  
The default white LED current is set with the external  
1
FEATURES  
sensor resistor Rset, and the feedback voltage is  
regulated to 200mV, as shown in the typical  
application. During the operation, the LED current can  
be controlled using the 1 wire digital interface (  
Easyscale™ protocol) through the CTRL pin.  
Alternatively, a pulse width modulation (PWM) signal  
can be applied to the CTRL pin through which the  
duty cycle determines the feedback reference  
voltage. In either digital or PWM mode, the  
TPS61165 does not burst the LED current; therefore,  
it does not generate audible noises on the output  
capacitor. For maximum protection, the device  
features integrated open LED protection that disables  
the TPS61165 to prevent the output from exceeding  
the absolute maximum ratings during open LED  
conditions.  
2
•
•
•
•
3-V to 18-V Input Voltage Range  
38-V Open LED Protection for 10 LEDs  
200-mV Reference Voltage With 2% Accuracy  
1.2-A Switch FET With 1.2-MHz Switching  
Frequency  
•
Flexible 1 Wire Digital and PWM Brightness  
Control  
•
•
•
Built-in Soft Start  
Up to 90% Efficiency  
2mm × 2mm × 0.8mm 6-pin QFN Package With  
Thermal Pad, and SOT-23 Package  
APPLICATIONS  
•
•
High Brightness LED Lighting  
White LED Backlighting for Media Form Factor  
Display  
The TPS61165 is available in a space -saving 2mm x  
2mm OFN package with thermal pad, and SOT-23  
package  
DESCRIPTION  
With  
a 40-V rated integrated switch FET, the  
TPS61165 is a boost converter that drives up to 10  
LEDs in series. The boost converter runs at a  
1.2-MHz fixed switching frequency with 1.2-A switch  
current limit, and allows for the use of a high  
brightness LED in general lighting.  
L1  
D1  
VIN 5V  
10 mH  
C1  
C2  
4.7 mF  
1 mF  
TPS61165  
VIN SW  
ON/OFF  
DIMMING  
CONTROL  
350 mA  
CTRL  
FB  
Rset  
GND  
COMP  
0.57 W  
220nF  
L1: TOKO #A915 _Y-100M  
C1: Murata GRM188R61A475 K  
C2: Murata GRM188R61E105K  
D1: ONsemi MBR0540T1  
LED : OSRAM LW-W5SM  
Figure 1. Typical Application  
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
Easyscale is a trademark 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 © 2007–2010, Texas Instruments Incorporated  
 
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