ADP5091 can power the microcontroller normally after boosting the 1.2V battery. However, after connecting HC-05, it does not light up and the voltage drops.

qjzw778

ADP5091 can power the microcontroller normally after boosting the 1.2V battery. However, after connecting HC-05, it does not light up and the voltage drops. [Copy link]

 

ADP5091 can power the microcontroller normally after boosting the 1.2V lithium battery. However, after connecting HC-05, it does not light up and the voltage drops.

tagetage

ADP5091 is mainly used for DC input from 80mV to 3.3V. If you use it for 1.2V boost, you will waste this chip. Your solution should use a boost chip above 0.9V. Which lithium battery is 1.2V? And you said that after connecting to HC-05, it can't light up and the voltage drops. Is it the battery voltage that drops or the output voltage that drops? What is the output voltage? What is the specification of your battery? ? ? ? ? ?

qjzw778

tagetage posted on 2024-11-12 12:32 ADP5091 is mainly used for DC input from 80mV to 3.3V. If you use it for 1.2V boost, you will waste this chip. Your solution is for boosting above 0.9V...

Now it is mainly used for testing with 1.2V batteries. Later on, I will use batteries compressed by myself. The voltage of the batteries compressed by myself may be smaller, and the output voltage drops. I have tried to connect the output end directly to the microcontroller and use other power supplies for HC-05. The power supply of the microcontroller is unstable, but data can be transmitted.

qjzw778

tagetage posted on 2024-11-12 12:32 ADP5091 is mainly used for DC input from 80mV to 3.3V. If you use it for 1.2V boost, you will waste this chip. Your solution is for boosting above 0.9V...

The output voltage drops to 2.5V.

tagetage

The output voltage drops to 2.5V. Your description of the problem is still inaccurate. You didn't say how many volts the normal output is. Is the normal output 5V, 3.3V, or 2.6V?

You mentioned the battery voltage. You didn’t mention the battery discharge current, nor did you mention the system power consumption. . .

According to the existing information, it may be that the battery discharge current is small, or the ADP5091 boost power is low.

qwqwqw2088

The ADP5091

1.5V to 3.6V with 150mA regulated output

It should be enough to power the HC-05

Voltage drops? How much?

qjzw778

tagetage posted on 2024-11-12 13:39 The output voltage drops to 2.5V. -------- Your problem description is still inaccurate. You didn't say how many volts the normal output is. Is the normal output 5V or 3. ...

Excuse me

No load connected:
REG-out voltage 3.31V
Dry cell voltage 1.2V
Connected to microcontroller but not HC-05:
REG-out voltage 3.31V
All connected:
REG-out voltage slowly drops from around 2.9V, and HC-05 does not light up, and the microcontroller does not work either
I would like to ask if the boost power is low, can I replace the HC-05 or is there any other solution?

qjzw778

qwqwqw2088 posted on 2024-11-12 16:52 This ADP5091 1.5V to 3.6V provides 150mA stable output to power the HC-05. Should the voltage drop be enough? How much does it drop ...

No load:
REG-out voltage 3.31V Dry
battery voltage 1.2V
Connected to microcontroller, no HC-05:
REG-out voltage 3.31V
All connected:
REG-out voltage slowly drops from about 2.9V, and the HC-05 does not light up. The microcontroller does not work either.

tagetage

You still haven't mentioned the battery capacity and discharge current .

In addition, the working voltage of HC-05 Bluetooth module is 3.6V to 6V, so if you output 3.3V Bluetooth module, it will not work.

The voltage and current parameters of the HC-05 Bluetooth module are as follows

1. Input Voltage :

• The input voltage range of the HC-05 Bluetooth module is 3.6V to 6V, and it is forbidden to exceed 7V

2. Working current 3 :

• When not paired : the current is about 30mA 3. This is because the LED light on the module is flashing, causing the current to be in a changing state 4 .

• After successful pairing : the current is about 10mA 2 .

• During pairing : Current is between 30 and 40 mA 3 .

• Pairing completed but no communication : Current is between 2 and 8 mA3 .

• During communication : the current is 8mA.

These parameters ensure the stability and energy efficiency of the HC-05 Bluetooth module in different working conditions. When using it, you should pay attention to the range of the supply voltage and follow these current parameters to avoid overheating or performance degradation of the module.

zhoupxa

qjzw778 posted on 2024-11-12 19:19 Sorry, no load: REG-out voltage 3.31V & ...

The voltage of dry cell battery is 1.2V? Is it NiMH battery or NiCd battery? If it is ordinary manganese zinc battery, can it still be used if the voltage drops to 1.2V?