DAC53701: Use DAC53701 to generate pwm current source

liping pan

Intellectual 650 points

Part Number: DAC53701

Tool/software:

Just want to use below example,

1) connect GPI to MCU IO, pin, send 1KHz PWM

2) setup proper Rset, so can I generate constant current source for LED?

I mean, 1 KHz, 10mA low , 20mA high PWM

6 months ago

+1 Katlynne Jones 6 months ago

TI__Mastermind 42203 points

Hi Liping,

The device will not send a PWM with this setup. This is meant for a constant current. You can set the DAC output to 1V or 2V with a 100ohm RSET to get 10mA and 20mA.

Best,

Katlynne Jones

Data converters

Data converters forum

DAC53701: Use DAC53701 to generate pwm current source