TP5100 4.2V/8.4V Li-ion Battery Charging Module (Single/Dual Cell)
- Versatile Li-ion/Li-Po battery charger supporting both Single Cell (4.2V) and Dual Cell (8.4V) configurations.
- High-efficiency Step-Down Switching (Buck) operation with low heat generation.
- Wide input voltage range: 5V to 18V DC (Typical operating voltage 5V−15V).
- Programmable Charge Current adjustable from 0.1A up to a maximum of 2A.
- Comprehensive protection: Over-Temperature, Reverse Battery, and Short Circuit Protection.
- Features Red and Blue/Green LEDs to clearly indicate charging status and full charge.
Product Details
TP5100 4.2V/8.4V Li-ion Battery Charging Module (2A Step-Down Charger)
The TP5100 Charging Module is a robust and efficient solution for managing the charging of 1S (single) or 2S (dual series) Lithium-Ion or Lithium-Polymer battery packs. Utilizing the advanced TP5100 chip, this module employs a step-down switching (buck) charging mode, which delivers significantly less heat than traditional linear chargers, even at its maximum programmable current of 2 Amperes.
A key feature is its dual-mode capability: a simple onboard solder jumper (or pin) allows selection between 4.2V (single cell) and 8.4V (two cells in series) charging. The charging process follows the necessary three stages: trickle pre-charge, constant current (CC), and constant voltage (CV), ensuring maximum battery life and safety. Furthermore, the module includes comprehensive built-in safeguards like chip temperature protection, input undervoltage lockout, and reverse battery shutdown, making it an ideal choice for high-current portable devices and battery management systems.
🔧 Key Features
- Chipset: TP5100 Step-Down Switching Charge Manager.
- Battery Support: 1S (4.2V) or 2S (8.4V) Li-ion/Li-Po (Selectable).
- Input Voltage (VIN): Wide range from 5V to 18V DC.
- Max Current: Programmable maximum charging current up to 2A.
- High Efficiency: Switching frequency of 400 kHz allows for compact and cool operation.
- Protection Built-in: Features protection for Over-Temperature, Short Circuit, and Reverse Polarity.
💡 Applications
- High-capacity power banks and portable charging devices.
- Charging systems for 1S or 2S Li-ion power tools or robotics.
- Solar-powered battery charging stations (given wide VIN).
- Custom Li-ion battery packs requiring robust protection and fast charging.
⚙️ Technical Specifications
| Converter Chip | TP5100 |
| Input Voltage (VIN) | 5V to 18V DC (Max static input 20V) |
| Output Voltage | 4.2V (1S) or 8.4V (2S) |
| Max Charge Current | 2A (Programmable) |
| Charging Stages | Trickle, Constant Current, Constant Voltage |
| Switching Frequency | 400 kHz |
| Charging Accuracy | ≤1% |
| Operating Temperature | −40 ∘ C to +85 ∘ C |
📦 Package Includes
- 1 × TP5100 4.2V/8.4V Li-ion Battery Charging Module
Specifications
- TypeBattery Charging Module
- Operating Voltage5V - 18V DC
- Temperature Range-40°C – 80°C
- Output TypeConstant Current / Constant Voltage
- Sampling RateNot Applicable
- InterfaceHardwired Terminals
