KansaiRobot
Member
Hello and thank you always for your useful and kind help.
I have a question related with LDO regulators . Please take a look at these circuits:
Can someone explain me these circuits, and specially the part that I marked with a black elipse??
The IC being used is
https://www.torexsemi.com/products/discon/item/53-XC6209_12.pdf
I understand that CE is some kind of a enable pin. The datasheet actually provides the left circuit as a "typical application circuit".
But regarding the right circuit, I suppose VCC-3V3 refers to a 3.3V so what happens if I put another voltage to BL_CTRL?? what happens if I put GND there? and what happens if I apply a PWM signal there??
I understand voltage dividers when they go from VCC to ground so I guess R8 and R9 are somehow dividing the voltage, but ok, if this is so, then what happens when this divided voltage enters CE???
My understanding of the circuits is stated above. Plus the datasheet puts the internals as :
I will greatly appreciate if someone can explain the role of the circuit to me.
Thanks a lot in advance
I have a question related with LDO regulators . Please take a look at these circuits:
Can someone explain me these circuits, and specially the part that I marked with a black elipse??
The IC being used is
https://www.torexsemi.com/products/discon/item/53-XC6209_12.pdf
I understand that CE is some kind of a enable pin. The datasheet actually provides the left circuit as a "typical application circuit".
But regarding the right circuit, I suppose VCC-3V3 refers to a 3.3V so what happens if I put another voltage to BL_CTRL?? what happens if I put GND there? and what happens if I apply a PWM signal there??
I understand voltage dividers when they go from VCC to ground so I guess R8 and R9 are somehow dividing the voltage, but ok, if this is so, then what happens when this divided voltage enters CE???
My understanding of the circuits is stated above. Plus the datasheet puts the internals as :
I will greatly appreciate if someone can explain the role of the circuit to me.
Thanks a lot in advance