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

TP5000 4.2V/3.6V 1A Lithium Battery Charging Module is a versatile and highly efficient switch-mode charging solution designed to handle both Lithium-ion (4.2V) and Lithium Iron Phosphate (LiFePO4, 3.6V) batteries. This module utilizes the TP5000 power management IC to provide a consistent 1A charge current while maintaining much lower heat levels than traditional linear chargers like the TP4056. Furthermore, the board features a user-selectable solder bridge that allows you to toggle between the two battery chemistries with ease. Consequently, this module serves as an ideal upgrade for high-performance portable power projects where efficiency and thermal management are critical. Therefore, you can rely on this compact module to deliver safe, rapid, and intelligent charging for a wide variety of energy storage applications.

Key Features:

• Dual Chemistry Support: The onboard “SET” jumper allows users to switch between 4.2V Li-ion and 3.6V LiFePO4 charging profiles.
• Switch-Mode Efficiency: This module employs a buck converter topology, which reduces heat dissipation and improves energy conversion compared to linear charging alternatives.
• Adjustable Charge Current: The default 1A current provides rapid charging, however, users can modify the sense resistor to decrease the current for smaller battery capacities.
• Integrated Protection: The TP5000 IC includes internal over-temperature, short-circuit, and under-voltage protection to ensure safe operation during the charging cycle.
• Status Indication: Supports an external or onboard dual-color LED to clearly indicate charging and standby/full-charge states.

Technical Specifications:

• Input Voltage (V_IN): 4.5 V to 9.0 V (Recommended 5.0 V)
• Charge Voltage (Li-ion): 4.2 V (±1%)
• Charge Voltage (LiFePO4): 3.6 V (±1%)
• Maximum Charge Current: 1.0 A (Default)
• Switching Frequency: ≈ 400 kHz
• Operating Temperature Range: −40°C to +85°C
• Charging Precision: ±1%

Mechanical Specifications:

• PCB Material: High-quality FR4 Double-Sided Board
• Inductor Type: Surface-mount power inductor for efficient buck conversion.
• Mounting: Solder pads for input and output connections.
• Thermal Design: Large copper planes facilitate heat dissipation from the TP5000 IC.

Dimensions:

• Length: ≈ 21.5 mm
• Width: ≈ 14.5 mm
• Height: ≈ 4.2 mm
• Weight: ≈ 2.5 g

Pinout and Wiring:

• IN+: Connect to the positive terminal of the 5V to 9V DC power source.
• IN-: Connect to the negative terminal (GND) of the DC power source.
• B+: Connect to the positive terminal of the Lithium battery.
• B-: Connect to the negative terminal of the Lithium battery.
• SET: Leave open for 4.2V Li-ion; short the solder bridge for 3.6V LiFePO4 mode.
• Wiring Note: Keep the battery leads as short as possible to prevent voltage drops from affecting the charging accuracy.

Datasheet Reference:

• Download TP5000 Lithium Battery Charger IC Datasheet

Commonly Used in:

• Portable Power Banks: Acting as the primary charging stage for 18650 or Li-polymer cells.
• Solar Charging Systems: Converting fluctuating solar panel output into a stable charge for LiFePO4 batteries.
• Handheld Electronics: Charging internal batteries for flashlights, wireless sensors, and DIY tools.

Applications:

• LiFePO4 Battery Management: Safely managing 3.6V cells used in long-cycle-life energy storage.
• Efficient Battery Charging: Replacing high-heat linear chargers in enclosed plastic housings.
• DIY Electronics Projects: Providing a small-footprint charging circuit for ESP32 or Arduino-based portable devices.

Equivalent Models:

• TP4056 (Linear Alternative): A common but less efficient linear charger limited to 4.2V Li-ion only.
• MCP73831: A high-precision linear charger for low-current applications.
• CN3058: A dedicated charging IC specifically designed for LiFePO4 battery management.

Package Includes:

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