Li-ion Charge and Protection circuit 2100mA with DC-DC converter

This module has a built-in li-ion charge, 5V boost and protection circuit against over and under voltage, over temperature (chip) and short-circuit protection.

Specifications:

• Input voltage (Vin): DC 4.5V - 5.5V (5V recommended)
• Input current: max 2100mA
• Battery charging voltage: 4.2V ± 1%
• Output voltage: 5.0V 
• Efficiency (max): 96%
• Output current (max): 2100mA
• Standby current (charging): ~ 100μA
• Standby current (discharging): ~ 50μA
• Input: solder pads (VIN and GND)
• Output: solder pads (OUT-5V and GND)
• Li-ion connection: Solder pads (BAT and GND)
• Automatically switches off if the load is lower than ~50mA