I see this design pattern repeatedly in AtTiny13a based LED flashlight drivers:
Similar:
I'm having a hard time making sense of the red line (Vcc) trace. Pin 6 on the ATtiny13a is driving 3 x AMC7135 current regulators in parallel (or at least that is how it appears to me). Each of those current regulators generates a constant 350ma of output for a total of 1050ma. Aside: pin 6 is manipulated with PWM to provide multiple brightness levels. The ATtiny13a is restricted to 40ma per I/O pin so it can't possibly be sourcing > 1A to the 3 regulators. What have I misunderstood?
Links:
ATtiny13A Datasheet
AMC7135 Datasheet
Thanks!
Similar:
I'm having a hard time making sense of the red line (Vcc) trace. Pin 6 on the ATtiny13a is driving 3 x AMC7135 current regulators in parallel (or at least that is how it appears to me). Each of those current regulators generates a constant 350ma of output for a total of 1050ma. Aside: pin 6 is manipulated with PWM to provide multiple brightness levels. The ATtiny13a is restricted to 40ma per I/O pin so it can't possibly be sourcing > 1A to the 3 regulators. What have I misunderstood?
Links:
ATtiny13A Datasheet
AMC7135 Datasheet
Thanks!
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