2PCS/LOT DIY mobile power supply circuit board 3V 5V 18650 lithium battery booster 2A | Электроника

---

Short term maximum output is 2A, The stability of 1.5A+, Synchronous rectification boost approach. Input up to 1.5A faster charging.     Short term maximum output is 2A, The stability of 1.5A+, Synchronous rectification boost approach. Input up to 1.5A faster charging. A, performance parameter Input charging voltage: 4.5V-5.8V (value 5V) Input current: 1.3A-1.6A (value 1.5A) Output voltage: 5V-5.25V (theoretical value (5.1V) Output current: <1.5A Since the consumption current <100 a The overcharge protection voltage: 4.3V (crystal rich DW01+) Over charge voltage recovery 4.1V Over discharge protection voltage 2.5V (lithium battery protection IC) The software has put the protection voltage 3V (single chip microcomputer protection) No load off time 120S (at the end of the current power LED light 3S) Automatic stop charging current (load) 50mA-100mA (60mA, 70mA field) Overload current protection 1.8A-2.4A The conversion efficiency of the motherboard Test conditions: 2600MA * 2  cell (4.2V cell has >100 cycles (CC3A test battery capacity 5100MAH)) Electronic load CC 1.5A test, 3400MAH release capacity of the average voltage 4.93V Efficiency = (average output voltage output capacity * (*) / battery voltage average) = (3400 *4.93) / (5100*3.7) = 88.82% To charge the mobile power supply: Enter the USB plug in the charger, automatic charging to the mobile power supply, the power indicator light according to the existing capacity of mobile power for lights, and said that the existing capacity of a peak indicator light flashes 1 times every 0.5 seconds. When charging the battery indicator: display table (unplug the charger and display the current charge capacity of 3S after closing) This mobile power full: 4 LED at the same time, continuous light and flash in full. The equipment for charging: Connected to external devices such as mobile phone, press the button, open the output (no load 50S automatically shut down), began to charge a mobile phone. The discharge power indicator light shows: (4 LED for the first time starting all light, and then turn off the power indicator) When the external device is full: When the mobile phone and other external devices is filled, the software detects the output current of 50-100MA, to determine the mobile phone or mobile phone has not connected with the mobile power supply, the power indicator light turn off all output, automatic shutdown. Working mode 1, charging mode of linear charge 2, boost mode (high efficiency Boost DC-DC synchronous PWM) 3 MCU circuit management, real-time monitoring and management The switch button function: 1 click Start boost output, and power indicator light, roughly the remaining battery power. Pull out the mobile phone will automatically close the boost output. (note, switch control, the board is automatically closed out mobile phone,) Application examples: