MP2636 5V Step-Up / Li-Ion Battery Charger

The DFRobot module with the MP2636 from Monolithic Power Systems charges a single-cell Li-ion or Li-polymer battery and generates 5 V from it at a USB socket. With a battery connected, it works like a power bank. When an external voltage is present at VIN, the battery is charged automatically and the CHG LED lights up. The battery is not included.

Important: According to DFRobot, the module has overcharge protection and shuts down above 150 °C. DFRobot does not specify deep discharge protection, so use only batteries with built-in protection circuitry. Observe the polarity when connecting.

Features:

• Charging and 5 V output on one board
• VIN input via Micro USB, 4.5 V to 6 V
• Battery on the 2-pin BATTERY connector
• VOUT output via USB type A socket
• LEDs for charging (CHG) and boost

Application Examples:

• Mobile projects with Li-ion battery and 5 V output
• Building your own power bank
• Keeping small loads powered during a power interruption

Documentation:

• Schematic (PDF)
• MP2636 datasheet (PDF)

Technical Data:

• Chip: MP2636
• Charging input voltage (VIN): 4.5 V to 6 V DC
• Boost output voltage (VOUT): 5 V
• Battery: 1 cell Li-ion or Li-polymer 3.7 V, full 4.2 V
• Maximum charging current: 2.5 A
• Maximum boost output current: 2.5 A
• Switching frequency: 600 kHz
• Efficiency charging and boost: over 90 %
• Protection: overcharge protection, shutdown above 150 °C
• Dimensions: 35 × 30 × 11 mm
• Weight: 12 g

Scope of Delivery:

• 1× MP2636 5V Step-Up / Li-Ion Battery Charger