数据搜索系统,热门电子元器件搜索 |
|
TL4242-Q1 数据表(PDF) 9 Page - Texas Instruments |
|
|
TL4242-Q1 数据表(HTML) 9 Page - Texas Instruments |
9 / 21 page REF Q max REF V I R = t PWM,OFF 30% 70% t PWM,ON t STHL Open Load Open Load t t t t V PWM V PWM,H V PWM,L I Q,nom I Q V LD V D V ST TL4242-Q1 www.ti.com SLVS732E – JULY 2010 – REVISED JULY 2013 Figure 8. Function and Timing Diagram Stoplight and Taillight Application For many automobiles, the same set of LEDs illuminates both taillights and stoplights. Thus, the LEDs must operate at two different brightness levels, full brightness for the stoplight and 10% to 25% brightness for the taillight. The easiest way to achieve the different brightness is dimming by pulse-width modulation (PWM), which holds the color spectrum of the LED over its whole brightness range. The maximum current that passes through the LED is programmable by sense resistor RREF. Obtain the maximum current, IQmax, that passes through the LEDs by the following expression: For example, if RREF equals 1 Ω, as VREF is a fixed value range from 168 mV to 185 mV, IQmax should be 168 mA to 185 mA. Copyright © 2010–2013, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Links: TL4242-Q1 |
类似零件编号 - TL4242-Q1 |
|
类似说明 - TL4242-Q1 |
|
|
链接网址 |
隐私政策 |
ALLDATASHEETCN.COM |
ALLDATASHEET是否为您带来帮助? [ DONATE ] |
关于 Alldatasheet | 广告服务 | 联系我们 | 隐私政策 | 链接交换 | 制造商名单 All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |