Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

help me to select right 8/16 bit buffer IC

Status
Not open for further replies.
MUKESH.K.S

MUKESH.K.S

Full Member level 1
Joined
Jan 31, 2014
Messages
98
Helped
14
Reputation
28
Reaction score
13
Trophy points
1,288
Location
KERALA
Activity points
1,891
I need to use 8/16 bit buffer ic to drive large number of LEDs using micro-controller.
Each channel should be capable of sourcing 3 amps and the inputs should be TTL compatible to connect to the uC.

If the output voltage can be variable , i can easily control the intensity of the leds.

Is there is any IC having the mentioned features or suggest me any other better methods.
 

hello,


i think you will not find out, direct IC to drive 3 amps at output.
did you allready see Microchip MCP23017 .. drive up to 2x8 = 16 outputs dialogue in I2C.

after you need to add 1 MOSFET driver as IRLZ14 (gate input at TTL level) for each output
to be able to drive 3 Amps...at the desired voltage (12,24..or more Volts)

Maybe specialized IC exist .. after is a global cost problem..
 
Thanks for the reply.....
Actually i want to drive 15 rows consisting of 90-180 LEDs , that's why I am searching for high current solutions.
If i use one MOSFET for each row line , i have to use 15 MOSFETs , That will make my pcb big and also the cost will be a problem. Can you suggest any solution?
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top