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TPS75100DSKT PDF预览

TPS75100DSKT

更新时间: 2023-09-03 20:34:19
品牌 Logo 应用领域
德州仪器 - TI 驱动驱动器
页数 文件大小 规格书
28页 1516K
描述
具有 PWM 亮度控制功能的 10mA/通道低压降双列 LED 驱动器 | DSK | 10 | -40 to 85

TPS75100DSKT 数据手册

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TPS75100, TPS75103, TPS75105  
SBVS080J SEPTEMBER 2006REVISED NOVEMBER 2016  
TPS7510x Low Dropout, Two-Bank LED Driver With PWM Brightness Control  
1 Features  
3 Description  
The TPS7510x linear low dropout (LDO) matching  
LED current source is optimized for low-power  
keypad and navigation pad LED backlighting  
applications. The device provides a constant current  
to up to four unmatched LEDs organized in two banks  
of two LEDs each in a common-cathode topology.  
Without an external resistor, the current source  
defaults to a factory-programmable, preset current  
level with ±0.5% accuracy (typical). An optional  
external resistor can be used to set initial brightness  
to user-programmable values with higher accuracy.  
Brightness can be varied from off to full brightness by  
inputting a pulse width modulation (PWM) signal on  
each enable pin (ENx, where x indicates LED bank A  
or B). Each bank has independent enable and  
brightness control, but current matching is done to all  
four channels concurrently. The input supply range is  
ideally suited for single-cell Li-Ion battery supplies  
and the TPS7510x can provide up to 25 mA per LED.  
1
Regulated Output Current with 2% LED-to-LED  
Matching  
Drives Up to Four LEDs at 25 mA Each in a  
Common Cathode Topology  
28-mV Typical Dropout Voltage Extends Usable  
Supply Range in Li-Ion Battery Applications  
Brightness Control Using PWM Signals  
Two 2-LED Banks With Independent Enable and  
PWM Brightness Control per Bank  
No Internal Switching Signals—Eliminates EMI  
Default LED Current Eliminates External  
Components  
Default Values from 3 mA to 10 mA (in 1-mA  
Increments) Available Using Innovative Factory  
EEPROM Programming  
Optional External Resistor can be Used for  
High-Accuracy, User-Programmable Current  
No internal switching signals are used, eliminating  
troublesome electromagnetic interference (EMI). The  
TPS7510x is offered in an ultra-small, 9-ball, 0.4-mm  
ball-pitch wafer chip-scale package (WCSP) and a  
2.50-mm × 2.50-mm, 10-pin WSON package, yielding  
a very compact total solution size ideal for mobile  
handsets and portable backlighting applications. The  
device is fully specified over TJ = –40°C to +85°C.  
Over current and Over temperature Protection  
Available in Wafer Chip-Scale Package  
or 2.50-mm × 2.50-mm WSON-10  
2 Applications  
Keypad and Display Backlighting  
White and Color LEDs  
Cellular Handsets  
Device Information(1)  
PART NUMBER  
PACKAGE  
WSON (10)  
DSBGA (9)  
BODY SIZE (NOM)  
2.50 mm × 2.50 mm  
1.208 mm x 1.208 mm  
PDAs and Smartphones  
TPS7510x  
(1) For all available packages, see the orderable addendum at  
the end of the data sheet.  
Typical Application Diagram  
VBATT  
TPS7510x  
VIN  
D1A  
D2A  
VENA  
VENB  
ENA  
ENB  
D1B  
D2B  
ISET  
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,  
intellectual property matters and other important disclaimers. PRODUCTION DATA.  
 
 
 
 
 
 

TPS75100DSKT 替代型号

型号 品牌 替代类型 描述 数据表
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完全替代

具有 PWM 亮度控制功能的 10mA/通道低压降双列 LED 驱动器 | DSK | 1
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