Hello Sir,
i have designed a power supply circuit based on ADP160AUJZ-3.0, the circuit diagram is below
PWR_BATT is Vin = 4.5V
PWR_RTC is Vout = 3.0V
The result is:
1. when load current is 3uA, Iq = 87uA
2. when no load on output port, Iq > 80uA
3. if i cut pin 3 from Vin, and connected to gnd, Iq < 1uA
So i think there must be something wrong with my design. because Iq is more great than spec..
Please help me, thank you.
Hi,
pls refer to the diagram below:
The power is 4.5V, XMM1 is DMM(Agilent 34401A)
C35 and C36 are ceramic capacitors: 1uF,16V
when i connected EN to GND, the current read from DMM is less than 1uA, so C36 is ok
when i cut off the load, and even delete C35, the current is higher than 80uA
and i also test current from EN, it's less than 0.1uA
So was there anything i do wrong?
Hi,
pls refer to the diagram below:
The power is 4.5V, XMM1 is DMM(Agilent 34401A)
C35 and C36 are ceramic capacitors: 1uF,16V
when i connected EN to GND, the current read from DMM is less than 1uA, so C36 is ok
when i cut off the load, and even delete C35, the current is higher than 80uA
and i also test current from EN, it's less than 0.1uA
So was there anything i do wrong?
