Electronic Components Datasheet Search |
|
AME5142AAEEY Datasheet(PDF) 8 Page - Analog Microelectronics |
|
AME5142AAEEY Datasheet(HTML) 8 Page - Analog Microelectronics |
8 / 18 page AME, Inc. 10 White LED Boost Converter In Tiny Package AME5142 Rev. A.01 n Application Hints Dimming Control Figure6. Dimming Control Using a DC Voltage B. Using a DC Voltage Using a variable DC voltage to adjust the brightness is a popular method in some applications. The dim- ming control using a DC voltage circuit is shown in Figure 6. According to the Superposition Theorem, as the DC voltage increases, the voltage contributed to V FB increases and the voltage drop on R2 decreases, i.e. the LED current decreases. For example, if the V DC range is from 0V to 3V, the selection of resistors in Figure 6 sets dimming control of LED current from 20mA to 0mA. C. Using a Filtered PWM Signal The filtered PWM signal can be considered as an adjust- able DC voltage. It can be used to replace the variable DC voltage source in dimming control. The circuit is shown in Figure 7. Figure 7. Dimming Control Using a Filtered PWM Signal PWM Signal L1 10 µH AME5142 GND IN EN SW FB V IN 2.7V to 5.5V OVP V OUT C OUT 1 µF R2 7.5 Ω C IN 4.7 µF R3 5.1K R4 91K C DC 0.1 µF 3V 0V R DC 10K L1 10 µH AME5142 GND IN EN SW FB V IN 2.7V to 5.5V OVP V OUT C OUT 1 µF R2 7.5 Ω C IN 4.7 µF R3 5.1K R4 91K VDC Dimming 0V to 3V |
Similar Part No. - AME5142AAEEY |
|
Similar Description - AME5142AAEEY |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List 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 |