Post History
I want to operate a BLE chip at very close to its absolute maximum voltage. The chip is nRF52810 This is intended for a battery powered device and I want to use a 3.6V non-rechargable battery dir...
#4: Post edited
by
DeadMouse
·
2024-07-10T17:22:56Z (3 months ago)
- I want to operate a BLE chip at very close to its absolute maximum voltage.
- The chip is nRF52810
- This is intended for a battery powered device and I want to use a 3.6V non-rechargable battery directly wired to the chip.
- However the [datasheet](https://docs.nordicsemi.com/bundle/nRF52810_PS_v1.5/resource/nRF52810_PS_v1.5.pdf) in page 409 mentions:
-  that its absolute maximum voltage is 3.6V!
- The battery has an open-circuit voltage 3.6V - 3.65V
- What should I do in that case?
- I was thinking of a series resistor 1Ω - 3Ω between the battery positive line and the VCC of the chip.
- After the resistor a large decoupling capacitor 10uF - 47uF will form a low pass RC filter.
- Is that going to work?
- PS: I tried connecting the power directly to the chip and it works but I'm worried about the status of the device in long-term.
I want to avoid using an LDO due to power loss, the device must consume as low energy as possible.- I have seen similar practice: 3.6V battery directly to a microcontroller that also had an absolute maximum value of 3.6V
- I think it was a TI sub-GHz but I found it strange to be used like that.
- The diagram of what I suggest:
- 
- I want to operate a BLE chip at very close to its absolute maximum voltage.
- The chip is nRF52810
- This is intended for a battery powered device and I want to use a 3.6V non-rechargable battery directly wired to the chip.
- However the [datasheet](https://docs.nordicsemi.com/bundle/nRF52810_PS_v1.5/resource/nRF52810_PS_v1.5.pdf) in page 409 mentions:
-  that its absolute maximum voltage is 3.6V!
- The battery has an open-circuit voltage 3.6V - 3.65V
- What should I do in that case?
- I was thinking of a series resistor 1Ω - 3Ω between the battery positive line and the VCC of the chip.
- After the resistor a large decoupling capacitor 10uF - 47uF will form a low pass RC filter.
- Is that going to work?
- PS: I tried connecting the power directly to the chip and it works but I'm worried about the status of the device in long-term.
- I want to avoid using an LDO due to power loss, the device must consume as low energy as possible. Currently the device consumes around 2.5uA while in sleep mode.
- I have seen similar practice: 3.6V battery directly to a microcontroller that also had an absolute maximum value of 3.6V
- I think it was a TI sub-GHz but I found it strange to be used like that.
- The diagram of what I suggest:
- 
#3: Post edited
by
DeadMouse
·
2024-07-10T17:14:52Z (3 months ago)
- I want to operate a BLE chip at very close to its absolute maximum voltage.
- The chip is nRF52810
- This is intended for a battery powered device and I want to use a 3.6V non-rechargable battery directly wired to the chip.
- However the [datasheet](https://docs.nordicsemi.com/bundle/nRF52810_PS_v1.5/resource/nRF52810_PS_v1.5.pdf) in page 409 mentions:
-  that its absolute maximum voltage is 3.6V!
- The battery has an open-circuit voltage 3.6V - 3.65V
- What should I do in that case?
- I was thinking of a series resistor 1Ω - 3Ω between the battery positive line and the VCC of the chip.
- After the resistor a large decoupling capacitor 10uF - 47uF will form a low pass RC filter.
- Is that going to work?
- PS: I tried connecting the power directly to the chip and it works but I'm worried about the status of the device in long-term.
- I want to avoid using an LDO due to power loss, the device must consume as low energy as possible.
- I have seen similar practice: 3.6V battery directly to a microcontroller that also had an absolute maximum value of 3.6V
I think it was a TI sub-GHz but I found it strange to be used like that.
- I want to operate a BLE chip at very close to its absolute maximum voltage.
- The chip is nRF52810
- This is intended for a battery powered device and I want to use a 3.6V non-rechargable battery directly wired to the chip.
- However the [datasheet](https://docs.nordicsemi.com/bundle/nRF52810_PS_v1.5/resource/nRF52810_PS_v1.5.pdf) in page 409 mentions:
-  that its absolute maximum voltage is 3.6V!
- The battery has an open-circuit voltage 3.6V - 3.65V
- What should I do in that case?
- I was thinking of a series resistor 1Ω - 3Ω between the battery positive line and the VCC of the chip.
- After the resistor a large decoupling capacitor 10uF - 47uF will form a low pass RC filter.
- Is that going to work?
- PS: I tried connecting the power directly to the chip and it works but I'm worried about the status of the device in long-term.
- I want to avoid using an LDO due to power loss, the device must consume as low energy as possible.
- I have seen similar practice: 3.6V battery directly to a microcontroller that also had an absolute maximum value of 3.6V
- I think it was a TI sub-GHz but I found it strange to be used like that.
- The diagram of what I suggest:
- 
#2: Post edited
by
DeadMouse
·
2024-07-10T17:06:22Z (3 months ago)
- I want to operate a BLE chip at very close to its absolute maximum voltage.
- The chip is nRF52810
- This is intended for a battery powered device and I want to use a 3.6V non-rechargable battery directly wired to the chip.
- However the [datasheet](https://docs.nordicsemi.com/bundle/nRF52810_PS_v1.5/resource/nRF52810_PS_v1.5.pdf) in page 409 mentions:
-  that its absolute maximum voltage is 3.6V!
- The battery has an open-circuit voltage 3.6V - 3.65V
- What should I do in that case?
- I was thinking of a series resistor 1Ω - 3Ω between the battery positive line and the VCC of the chip.
- After the resistor a large decoupling capacitor 10uF - 47uF will form a low pass RC filter.
- Is that going to work?
- PS: I tried connecting the power directly to the chip and it works but I'm worried about the status of the device in long-term.
- I want to avoid using an LDO due to power loss, the device must consume as low energy as possible.
- I want to operate a BLE chip at very close to its absolute maximum voltage.
- The chip is nRF52810
- This is intended for a battery powered device and I want to use a 3.6V non-rechargable battery directly wired to the chip.
- However the [datasheet](https://docs.nordicsemi.com/bundle/nRF52810_PS_v1.5/resource/nRF52810_PS_v1.5.pdf) in page 409 mentions:
-  that its absolute maximum voltage is 3.6V!
- The battery has an open-circuit voltage 3.6V - 3.65V
- What should I do in that case?
- I was thinking of a series resistor 1Ω - 3Ω between the battery positive line and the VCC of the chip.
- After the resistor a large decoupling capacitor 10uF - 47uF will form a low pass RC filter.
- Is that going to work?
- PS: I tried connecting the power directly to the chip and it works but I'm worried about the status of the device in long-term.
- I want to avoid using an LDO due to power loss, the device must consume as low energy as possible.
- I have seen similar practice: 3.6V battery directly to a microcontroller that also had an absolute maximum value of 3.6V
- I think it was a TI sub-GHz but I found it strange to be used like that.
#1: Initial revision
by
DeadMouse
·
2024-07-10T17:03:49Z (3 months ago)
How to operate a chip very close to its absolute maximum voltage?
I want to operate a BLE chip at very close to its absolute maximum voltage. The chip is nRF52810 This is intended for a battery powered device and I want to use a 3.6V non-rechargable battery directly wired to the chip. However the [datasheet](https://docs.nordicsemi.com/bundle/nRF52810_PS_v1.5/resource/nRF52810_PS_v1.5.pdf) in page 409 mentions:  that its absolute maximum voltage is 3.6V! The battery has an open-circuit voltage 3.6V - 3.65V What should I do in that case? I was thinking of a series resistor 1Ω - 3Ω between the battery positive line and the VCC of the chip. After the resistor a large decoupling capacitor 10uF - 47uF will form a low pass RC filter. Is that going to work? PS: I tried connecting the power directly to the chip and it works but I'm worried about the status of the device in long-term. I want to avoid using an LDO due to power loss, the device must consume as low energy as possible.