Electronic Components Datasheet Search |
|
A6279ELPTR-T Datasheet(PDF) 8 Page - Allegro MicroSystems |
|
A6279ELPTR-T Datasheet(HTML) 8 Page - Allegro MicroSystems |
8 / 18 page Serial-Input, Constant-Current Latched LED Drivers with Open LED Detection A6278 and A6279 8 Allegro MicroSystems, Inc. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 www.allegromicro.com Constant Current (REXT) The A6278 and A6279 allow the user to set the magnitude of the constant current to the LEDs. Once set, the current remains constant regardless of the LED voltage variation, the supply voltage variation, or other circuit parameters that could otherwise affect LED current. The output current is determined by the value of an external current-control resistor (REXT). The relationship of these parameters is shown in figure 1. Typical characteristics for output current and VCE are shown in figure 2 for common values of REXT. 100 200 300 500 700 1K 2K 3K 5K Figure 1. Output Current versus Current Control Resistance TA= 25°C, VCE =0.7 V REXT (Ω) 90 80 70 60 50 40 30 20 10 0 100 200 300 500 700 1k 2k 3k 5k Figure 2. Output Current versus Device Voltage Drop TA=25°C VCE (V) REXT =225 Ω REXT =470 Ω REXT =3900 Ω 90 80 70 60 50 40 30 20 10 0 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 |
Similar Part No. - A6279ELPTR-T |
|
Similar Description - A6279ELPTR-T |
|
|
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 |