Other Parts Discussed in Thread: BQ24075
I'd like to drive the enable pin on the TPS81256 with a digital I/O pin from a CC2640r2. I'd like to drive the enable pin at <10 KHz. I don't see info about input impedance or capacitance for the enable pin in the specification. The voltage input on this device will be from the output of a BQ24075 (4.2-5.0 V depending on if running on battery or USB). The idea is to provide a regulated 5V to a voltage sensitive device (drawing ~20mA) regardless of if it's driven by the battery or USB. I want to control the PWM parameters (frequency & duty cycle) from the CC2640r2 I/O. Can the enable pin on the TPS81256 be used this way?
Thanks for your help,