Overview
The BQ25600DYFFR, produced by Texas Instruments, is a highly-integrated 3.0-A switch-mode battery charge management and system power path management device designed for single-cell Li-ion and Li-polymer batteries. This device features high-efficiency charging with a 1.5-MHz synchronous switch-mode buck charger, achieving 92% charge efficiency at 2-A from a 5-V input. It supports a wide range of input sources, including standard USB host ports, USB charging ports, and USB-compliant high-voltage adapters. The BQ25600DYFFR also includes advanced safety features such as battery negative temperature coefficient thermistor monitoring, charging safety timer, and overvoltage and overcurrent protections.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Input Voltage (VBUS) | 3.9 | - | 13.5 | V |
| Input Current (VBUS) | - | - | 3.25 | A |
| Battery Voltage (VBAT) | - | - | 4.624 | V |
| Fast Charging Current (IBATOP) | - | - | 3.0 | A |
| Operating Ambient Temperature (TA) | -40 | - | 85 | °C |
| Junction-to-Ambient Thermal Resistance (RθJA) | - | - | 58.8 | °C/W |
| Top Switching MOSFET On-Resistance (RON(LSFET)) | 55 | - | - | mΩ |
| Bottom Switching MOSFET On-Resistance (RON(BSFET)) | 60 | - | - | mΩ |
Key Features
- High-efficiency, 1.5-MHz synchronous switch-mode buck charger with 92% charge efficiency at 2-A from 5-V input.
- Auto detection of USB SDP, DCP, and non-standard adapters.
- Narrow VDC (NVDC) power path management with instant-on capability even with no battery or deeply discharged battery.
- Ideal diode operation in battery supplement mode.
- BATFET control for ship mode, wake-up, and full system reset.
- Flexible autonomous and I2C mode for optimal system performance.
- High integration including all MOSFETs, current sensing, and loop compensation.
- Remote battery sensing for fast charge.
- Thermal regulation and thermal shutdown.
- Input UVLO and overvoltage protection.
Applications
- Smartphones
- Mobile phone accessories
- Medical equipment
- Portable devices such as tablets and other handheld electronics.
Q & A
- What is the maximum input voltage supported by the BQ25600DYFFR?
The BQ25600DYFFR supports a maximum input voltage of 13.5 V. - What is the maximum fast charging current of the BQ25600DYFFR?
The maximum fast charging current is 3.0 A. - What is the operating temperature range of the BQ25600DYFFR?
The operating ambient temperature range is from -40°C to 85°C. - Does the BQ25600DYFFR support I2C communication?
Yes, it supports I2C serial interface for charging and system settings. - What safety features are included in the BQ25600DYFFR?
The device includes battery negative temperature coefficient thermistor monitoring, charging safety timer, overvoltage and overcurrent protections, and thermal regulation. - How does the BQ25600DYFFR manage power path?
The device features Narrow VDC (NVDC) power path management with instant-on capability even with no battery or deeply discharged battery. - What is the typical on-resistance of the top switching MOSFET?
The typical on-resistance of the top switching MOSFET is 55 mΩ. - Can the BQ25600DYFFR be used in medical equipment?
Yes, it is suitable for use in medical equipment due to its high reliability and safety features. - How does the BQ25600DYFFR handle thermal management?
The device includes thermal regulation and thermal shutdown to manage junction temperature. - What package type is the BQ25600DYFFR available in?
The device is available in a 30-ball, 2.0 mm × 2.4 mm WCSP package.
