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TPS61160A

更新时间： 2024-11-14 07:04:47
品牌 Logo 应用领域
德州仪器 - TI 驱动器
页数 文件大小 规格书
20页 817K
描述
White LED Driver With PWM Brightness Control in 2mm x 2mm QFN Package for up to 10 LEDs in Series

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TPS61160A 数据手册

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TPS61160A  
TPS61161A  
www.ti.com................................................................................................................................................................................................... SLVS937–MARCH 2009  
White LED Driver With PWM Brightness Control in 2mm x 2mm  
QFN Package for up to 10 LEDs in Series  
1
FEATURES  
DESCRIPTION  
•
2.7V to 18V Input Voltage Range  
•
26V Open LED Protection for 6 LEDs  
(TPS61160A)  
38V Open LED Protection for 10 LEDs  
(TPS61161A)  
With  
a 40-V rated integrated switch FET, the  
TPS61160A/61A is a boost converter that drives up  
to 10 LEDs in series. The boost converter runs at  
600kHz fixed switching frequency to reduce output  
ripple, improve conversion efficiency, and allows for  
the use of small external components.  
•
•
•
•
•
200mV Reference Voltage With ±2% Accuracy  
PWM Interface for Brightness Control  
Built-in Soft Start  
The default white LED current is set with the external  
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 by a pulse width modulation (PWM)  
signal applied to the CTRL pin through which the duty  
cycle determines the feedback reference voltage. In  
PWM dimming mode, the TPS61160A/61A 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 TPS61160A/61A to  
prevent the output from exceeding the absolute  
maximum ratings during open LED conditions.  
Up to 90% Efficiency  
2mm × 2mm × 0.8mm 6-pin QFN Package With  
Thermal Pad  
APPLICATIONS  
•
•
•
•
•
Cellular Phones  
Portable Media Players  
Ultra Mobile Devices  
GPS Receivers  
White LED Backlighting for Media Form Factor  
Display  
The TPS61160A/61A is available in a space-saving,  
2mm × 2mm QFN package with thermal pad.  
L1  
22 mH  
V 3 V to 18 V  
I
D1  
C1  
C2  
1 mF  
1 mF  
TPS61161A  
VIN  
SW  
FB  
ON/OFF  
DIMMING  
CONTROL  
CTRL  
COMP  
GND  
R
set  
10 W  
C3  
220 nF  
L1: TDK VLCF5020T-220MR75-1  
C1: Murata GRM188R61E105K  
C2: Murata GRM21BR71H105K  
D1: ONsemi MBR0540T1  
20 mA  
Figure 1. Typical Application of TPS61161A  
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 © 2009, Texas Instruments Incorporated  
1234567...20

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TPS61160A 替代型号

型号 品牌 替代类型 描述 数据表
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