Hi,
I’m using the TPS922052 and would like to know if the internal LDO output (VCC pin) can be used to power external circuitry.
Project Facts: Vin = 24V, Iled = 200mA, Vled ~ 19V (COB-LED), analog-dimming per PWM, frequency = 400kHz
I’m considering an external load of about 6-10 mA (small microcontroller and bus transceiver plus some resistors).
- Is it allowed/recommended to power external loads from VCC?
- If yes, what is the recommended maximum continuous external current under worst-case conditions?
- Are there any known startup / UVLO / stability issues when loading VCC with such a current?
By the way ... are there already a final or newer tool available, or any simulation models? More than a year ago, there a thread with a preliminary calculation tool.
Thanks and best regards,
Thomas
