Power regulator for ESP8266 ultra low power applications?
- Details
- Created: Tuesday, 10 May 2016 11:05
Q: I need to power my ESP with enough juice to meet the high connection sparks, but also be very very efficient for my deepsleep projects?
For several projects I used Microchip's mcp1700. It is actually a little underpowered for the spikes, but just for updating a simple sensor it works like a charm. I had one project powered with 3 AA's running for more than 26000 updates. Not bad ;-) If you update every 15 minutes it stays alive for about 3,5 months.
Take a look at the Q-item called "Power Saving".
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1.6 μA Typical Quiescent Current
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Input Operating Voltage Range: 2.3V to 6.0V
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Output Voltage Range: 1.2V to 5.0V
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250 mA Output Current for Output
Voltages >= 2.5V
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200 mA Output Current for Output
Voltages < 2.5V
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Low Dropout (LDO) Voltage, 178 mv typical @250 mA for Vout =2.8V
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0.4% Typical Output Voltage Tolerance
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Standard Output Voltage Options:
- 1.2V,1.8V,2.5V,2.8V,3.0V,3.3V,5.0V -
Stable with 1.0 μF Ceramic Output Capacitor
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ShortCircuitProtection
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OvertemperatureProtection
There it is, the black one in the middle:
