DC 5V 2.1A Mobile Power Diy Board 4.2V Charge Discharge Boost Battery Protection Indicator Module 3.7V Lithium 18650 LI-ION

? ? ? ? ? ? ? 4 in 1 charge/Discharger(boost)/battery protection/Battery level indicator modules ? ?? DD06CVSA is a multifunctional 3.7V/4.2V Mobile Power Diy? module,3 in 1 Function: charge,discharge and battery protection. It is very suitable for DIY mobile power. ?? Charge voltage : DC 4.5V-5.2V (If the power supply is?5.2V-5.5V,?please parallel diodes (eg SS34 SMB)) Charging current : 0-2.1A? Charge quiescent current : 100uA Full charge voltage : 4.2V+-1%. Discharge current : 0-3.5A; Discharge quiescent current : 50uA Discharge conversion efficiency : maximum 96% Output voltage : 5V Output current ? ?: 0-2.1A; Operating ambient temperature : ?-20¡ã to +85¡ã ?? Size : 26.7 x 18.1 x 5.7mm Weight : 1.9g ?? Comes with battery protection, do not need battery protection board? (if your battery comes with a protective board, it does not matter) Overcurrent protection(OCP) Overvoltage protection(OVP) Short circuit protection(SCP) Over temperature protection(OTP) ?? Pin description: 1 VIN : Charging port + 2 GND : Charging port - 3 BAT : Battery port + 4 GND : Battery port - 5 GND : Output port - 6 VOUT: Output port + 7 KEY : Output trigger port(Low pulse trigger) ?? 1 In discharge mode(In the charging mode,the KEY function is invalid), the KEY Trigger once,turn on the output;Continuous trigger twice: turn off the output. ? 2 When the load access, it will automatically turn on the output. But if the load is less than 50MA, the output will be turned off after 30 seconds ? ? ? ? ? ? ? ? ? ? ? ? ? ?