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When I am trying to adjusts the charging resistor also it doesn't give the output. The output comes like 1.8 V only.

NOTE: I have not connected any load.

ocrdu
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Gopi Kammela
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  • Please edit your question to show the circuit you are using, the supply voltage and a link to the datasheet. Welcome to EE.SE. – Transistor Nov 25 '22 at 07:28
  • If you are using TP4056 module, check for short circuits on it, maybe that's the case. Any additional information (module you using, input signals) will be appreciated. – MakePlatanGreatAgain Nov 25 '22 at 07:27

1 Answers1

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it doesn't give the output.

NOTE: I have not connected any load.

The TP4056 is a Li-ion battery charging IC. It does not produce a constant voltage output without a suitable battery connected e.g. it produces a limited "trickle charge" current (not constant voltage) when a low battery voltage is detected (see the datasheet). Without any battery connected, I expect a low battery voltage (actually none) is being detected.

When you connect a suitable battery, you should see the expected CC/CV charging functionality.

SamGibson
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