TP5100 2A 4.2v and 8.4v Dual/Single Lithium Battery Charger Module

TP5100 2A 4.2V / 8.4V Dual & Single Lithium Battery Charger Module delivers a compact and efficient charging solution for single-cell (4.2 V) or dual-cell (8.4 V) lithium batteries. Engineers and hobbyists use this module for battery-powered projects, DIY electronics, and portable energy storage systems that require reliable CC/CV charging with high efficiency.

Key Features:

• Dual/Single Cell Support: Charges both 1S (4.2 V) and 2S (8.4 V) lithium-ion or lithium-polymer batteries.
• High Charging Current: Provides up to 2 A charge current for faster charging cycles.
• Efficient Conversion: Built-in synchronous buck topology increases efficiency and reduces heat.
• CC/CV Charging: Delivers constant-current / constant-voltage charging profile for safe operation.
• Status Indicators: Integrated LED indicators show charging status and completion.
• Protection Features: Includes overcharge, short-circuit, and thermal protection.

Technical Specifications:

• Input Voltage: 5 V – 18 V DC
• Charge Voltage: 4.2 V (1-cell) / 8.4 V (2-cell)
• Charge Current: Up to 2 A (set by external resistor)
• Charging Method: CC/CV with automatic termination
• Conversion Efficiency: Up to 90% (depending on input and load)
• Protection: Over-voltage, over-temperature, and short-circuit protection

Mechanical Specifications:

• Module Type: Step-down charging module
• PCB Quality: FR-4 board with solder mask protection
• Connectors: Standard input/output pads for soldering or header pins
• Cooling: Requires airflow or heatsink under maximum load

Dimensions:

• Board Size: Approx. 22 mm × 17 mm × 5 mm
• Weight: ~5 g

Pinout and Wiring:

• VIN+ / VIN-: Connect DC power input (5–18 V).
• B+ / B-: Connect to the lithium battery terminals.
• Configuration Jumper: Set for single-cell (4.2 V) or dual-cell (8.4 V) charging mode.
• LED Indicators: Red = charging, Green = full charge.

Datasheet Reference:

• Refer to the official TP5100 datasheet for detailed electrical characteristics, application circuits, and thermal design guidelines.

Applications:

• Battery-Powered Devices: Charge lithium-ion packs in handheld and portable electronics.
• DIY Projects: Integrate into robotics, IoT modules, and maker projects requiring lithium battery charging.
• Power Banks and Backup Systems: Use for efficient charging in small-scale energy storage projects.
• Solar Charging Systems: Combine with DC-DC converters for solar-powered lithium charging.

Equivalent Models:

• TP4056: Single-cell lithium charger (lower current, no dual-cell support).
• CN3791: Solar-friendly lithium battery charger IC.
• LM2596 CC/CV Module: General-purpose charger alternative with adjustable settings.

Package Includes:

• 1 x TP5100 2A 4.2V / 8.4V Dual & Single Lithium Battery Charger Module