Initially we have selected this TI product TLC5940-EP but yellow color highlighted specification not met .
Specifications:
· Each PWM channel must be independently adjustable from 0 to 100% by the micro-controller.
· Each PWM channel must provide at least 12 bits of PWM resolution.
· Each PWM channel must provide a constant current regulator which shall be set at maximum for the device’s ratings.
· Each PWM channel’s constant current setting should be adjustable from 0 to 100% by the microcontroller.
· Each PWM channel’s constant current setting adjustment should have at least 6 bits of resolution.
· Each PWM channel must be able to sink at least 90mA of current.
· Each PWM channel must be able to withstand the application of at least 36VDC.
· Each PWM channel must have a minimal pull-up to un-switched internal 28VDC to support self-test.
· SPI interface used to communicate with Microcontroller
Could you please suggest the suitable part which can meet also the yellow highlighted requirements listed above? Fyi, our end application is Aerospace, so the part should be compatible with temperature range from -40 to 125 degC.