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TPS61500

更新时间： 2024-11-22 11:46:55
品牌 Logo 应用领域
德州仪器 - TI 驱动器转换器升压转换器
页数 文件大小 规格书
19页 652K
描述
3A Boost Converter for High Brightness LED Driver with Multiple Dimming Methods

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TPS61500 数据手册

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TPS61500  
www.ti.com ........................................................................................................................................................................................... SLVS893–DECEMBER 2008  
3A Boost Converter for High Brightness LED Driver with Multiple Dimming Methods  
1
FEATURES  
•
•
•
Programmable over voltage protection  
Analog and Pure PWM Brightness Dimming  
14-pin HTSSOP Package with PowerPad  
•
2.9-V to 18-V Input Voltage Range  
•
3-A, 40-V Internal Power Switch  
–
–
Four 3-W LEDs from 5-V input  
Eight 3-W LEDs from 12-V input  
APPLICATIONS  
•
Monitor backlight  
•
•
High Efficiency Power Conversion: Up to 93%  
•
1-W or 3-W high brightness LED  
Frequency Set by External Resistor: 200-kHz  
to 2.2-MHz  
•
User Defined Soft Start into Full Load  
DESCRIPTION  
The TPS61500 is a monolithic switching regulator with integrated 3-A, 40-V power switch. It is an ideal driver for  
high brightness 1-W or 3-W LED. The device has a wide input voltage range to support application with input  
voltage from multi-cell batteries or regulated 5-V, 12-V power rails.  
The LED current is set with an external sensor resistor R3, and the feedback voltage that is regulated to 200-mV  
by current mode PWM (pulse width modulation) control loop, as shown in the typical application. The device  
supports analog and pure PWM dimming methods for LED brightness control. Connecting a capacitor to the  
DIMC pin configures the device to be used for analog dimming, and the LED current varies proportional to the  
duty cycle of an external PWM signal. Floating the DIMC pin configures the IC for pure PWM dimming with the  
average LED current being the PWM signal's duty cycle times a set LED current.  
The device features a programmable soft-start function to limit inrush current during start-up, and has built-in  
other protection features, such as pulse-by-pulse over current limit, over voltage protection and thermal  
shutdown. The TPS61500 is available in 14-pin HTSSOP package with PowerPad.  
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.  
Copyright © 2008, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
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TPS61500 替代型号

型号 品牌 替代类型 描述 数据表
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