Overview
The BQ25101YFPT from Texas Instruments is a highly integrated linear charger designed for Li-Ion and Li-Pol batteries, particularly suited for space-limited portable applications. This device features a high input voltage range with input overvoltage protection, supporting low-cost unregulated adapters. The charger operates in three phases: conditioning, constant current, and constant voltage, ensuring accurate current and voltage regulation. It also includes thermal regulation and various protection mechanisms to ensure safe and efficient battery charging.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Rating | 30 V with 6.5 V Input Overvoltage Protection |
| Output Current Range | 10 mA to 250 mA |
| Charge Voltage Accuracy | 1% |
| Charge Current Accuracy | 10% |
| Thermal Regulation | 125°C with 150°C Thermal Shutdown Protection |
| Package Type | DSBGA (6 pins) |
| Operating Temperature Range | 0°C to 125°C |
| Battery Leakage Current | Maximum 75 nA |
| Precharge and Termination Current Thresholds | Programmable via external resistor |
Key Features
- High input voltage range with input overvoltage protection
- Dynamic power management and thermal regulation
- Ultra-low battery output leakage current (maximum 75 nA)
- Adjustable termination and precharge thresholds
- Support for high voltage chemistry (up to 4.35 V)
- OUT short-circuit protection and ISET short detection
- Automatic termination and timer disable mode (TTDM) for absent battery pack
- Compact DSBGA package (1.60 mm × 0.90 mm)
Applications
The BQ25101YFPT is ideal for space-limited portable applications such as smartphones, tablets, and other handheld devices. It is also suitable for wearable devices, IoT devices, and any other application requiring efficient and safe Li-Ion or Li-Pol battery charging.
Q & A
- What is the input voltage rating of the BQ25101YFPT?
The input voltage rating is 30 V with 6.5 V input overvoltage protection. - What is the output current range of the BQ25101YFPT?
The output current range is from 10 mA to 250 mA. - How accurate is the charge voltage regulation?
The charge voltage accuracy is 1%. - What is the thermal regulation of the BQ25101YFPT?
The device has thermal regulation at 125°C with 150°C thermal shutdown protection. - What type of package does the BQ25101YFPT come in?
The device comes in a DSBGA package with 6 pins. - What is the operating temperature range of the BQ25101YFPT?
The operating temperature range is from 0°C to 125°C. - How is the precharge and termination current threshold programmed?
The precharge and termination current thresholds are programmable via an external resistor. - What is the maximum battery leakage current?
The maximum battery leakage current is 75 nA. - Does the BQ25101YFPT support high voltage chemistry?
Yes, it supports high voltage chemistry up to 4.35 V. - What protection mechanisms does the BQ25101YFPT have?
The device includes OUT short-circuit protection, ISET short detection, and thermal shutdown protection.
