TP5000 4.2V/3.6V 1A Lithium Battery Charging Module

TP5000 4.2V/3.6V 1A Lithium Battery Charging Module delivers efficient, switch-mode charging for single-cell Li-ion (4.2 V) and LiFePO₄ (3.6 V) batteries. You integrate it into portable devices, backup packs, and DIY projects to achieve fast, low-heat charging with simple wiring and clear status feedback.

Key Features:

• Dual Chemistry Support: Select 4.2 V (Li-ion) or 3.6 V (LiFePO₄) charge voltage.
• 1 A Fast Charging: Deliver up to 1 A charge current with high efficiency.
• Switch-Mode Buck Topology: Reduce heat versus linear chargers for compact builds.
• CC/CV Algorithm: Provide constant-current then constant-voltage charging for longer cell life.
• Status Indicators: Use onboard LEDs for “charging” and “charge complete.”
• Adjustable Current: Set charge current via onboard programming resistor pad.
• Protections: Benefit from thermal regulation, input undervoltage lockout, and battery reverse protection design on typical modules.

Technical Specifications:

• Supported Cells: 1S Li-ion (4.2 V), 1S LiFePO₄ (3.6 V)
• Input Voltage: 4.5 V to 9 V DC (typical module range)
• Charge Current: 0.1 A to 1.0 A adjustable (set by R_PROG)
• Charge Algorithm: CC/CV with automatic charge termination
• Charge Status: LED indicators for CHRG and DONE
• Efficiency: Up to ~90% depending on input and battery voltage
• Protection Functions: Thermal regulation and input UVLO (module dependent)
• Operating Temperature: −20 °C to +85 °C (module environment)

Mechanical Specifications:

• Board Type: FR-4 PCB, through-hole pads for power and battery
• Mounting: Solder pads or pin headers to chassis/PCB; 3M adhesive or standoffs optional
• Connectors: Exposed pads labeled IN+/IN− and B+/B−; some variants include a DC jack or USB-C
• LEDs: Two SMD indicators for charging state

Dimensions:

• Module Size: Approx. 17 mm × 25 mm × 5 mm (varies by batch)
• Pad Spacing: 2.54 mm nominal for header-ready pads (if provided)

Pinout and Wiring:

• IN+ / IN−: Connect to DC supply (e.g., 5–9 V). Use a clean, regulated source.
• B+ / B−: Connect directly to the single-cell battery terminals.
• PROG (if exposed): Set charge current via resistor to ground. Lower resistance increases current.
• VSEL/Jumper (if provided): Select 4.2 V (Li-ion) or 3.6 V (LiFePO₄).
• Design Tip: Keep leads short, place the module close to the battery, and provide airflow or heatsinking for 1 A operation.

Datasheet Reference:

• Search for “TP5000 datasheet” to review full electrical characteristics, typical application circuits, and recommended R_PROG values for desired charge currents.

Applications:

• DIY Battery Packs: Build single-cell power banks and handheld devices.
• Robotics and IoT Nodes: Charge onboard cells from adapters or DC rails.
• Solar and Field Gear: Pair with a regulated input for efficient single-cell charging.
• UPS and Backup: Maintain standby cells in routers, mini-PCs, and alarms.

Equivalent Models:

• TP4056 Modules: Simpler linear 1 A chargers for 4.2 V Li-ion (higher heat, lower cost).
• MCP73831 Boards: Compact linear chargers up to 500 mA for space-constrained designs.
• CN3791 Solutions: Higher-current buck chargers for 4.2 V cells and solar inputs.

Package Includes:

• 1 x TP5000 4.2V/3.6V 1A Lithium Battery Charging Module