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Dear Sir!
I want to use a switch to switch power from 3.3VDC battery to a load (30mA max current). However, the control voltage comes from a passive harvester circuit that can output 1.8VDC and a maximum of 300uA current.
In my application, once power is harvested, the 1.8V is applied to the switch to power up the load from the battery. The problem is that the power harvester can only source 300uA of current. I searched many Optical-MOSFET Solid State Relays that operate at 1.8VDC but they consume >2mA of current for LED to operate the switch. I wanted to have your kind guidance in
(a) Is there any switch available with OnSemi that can be operated at 1.8V (300uA) for switching the power from the battery to the load at 3.3VDC and 30mA max?
(b) Can i use some switching MOSFETs or something from OnSemi?
I am in fact a student from Computer Science and dont have big background of power switches and relays, and need your kind guidance.
Best Regards,
Jawad
PhD Student,
UESTC, China
The NCP 451 is a very low Ron MOSFET controlled by external logic pin, allowing optimization of battery life, and portable device autonomy .
Proposed in a wide input voltage range from 0.75 V to 5.5 V and maximum DC current is 3 Amp.
Answered by: ON Semiconductor
2015-01-19 14:13:56.02