Overview
The BQ25723RSNR from Texas Instruments is a synchronous Narrow Voltage DC (NVDC) buck-boost battery charge controller designed to charge 1- to 4-cell batteries from a wide range of input sources, including USB adapters, high-voltage USB-C Power Delivery (PD) sources, and traditional adapters. This device is pin-to-pin compatible with the BQ25713 and supports USB 2.0, USB 3.0, USB 3.1, and USB Power Delivery (PD). It features seamless transition between buck, buck-boost, and boost operations without host control, making it highly versatile for various applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 3.5 - 26 | V |
| Charge Current | Up to 16.2 A / 8.1 A | A |
| Input Current Limit | Up to 10 A / 6.35 A | A |
| Charge Voltage Regulation | ±0.5% | % |
| Charge Current Regulation | ±3% | % |
| Input Current Regulation | ±2.5% | % |
| Package | 32-Pin 4.0 mm × 4.0 mm WQFN | |
| Junction Temperature Range | -40 to 150 | °C |
| Storage Temperature Range | -55 to 150 | °C |
Key Features
- Seamless transition between buck, buck-boost, and boost operations without host control.
- Support for USB 2.0, USB 3.0, USB 3.1, and USB Power Delivery (PD).
- Input Current Optimizer (ICO) to extract maximum input power without overloading the adapter.
- Integrated Fast Role Swap (FRS) feature following USB-PD specification.
- TI patented switching frequency dithering pattern for EMI noise reduction.
- Pass Through Mode (PTM) to improve efficiency over the full load range.
- Thermal shutdown and overvoltage, overcurrent protections.
- Support for USB On-the-Go (OTG) function with adjustable output voltage.
- Intel Vmin Active Protection (VAP) feature to prevent system voltage drops.
Applications
- Standard notebook PCs and Chromebooks.
- Tablets and multimedia devices.
- Wireless speakers.
- Ultrasound scanners and ventilators.
Q & A
- What is the input voltage range of the BQ25723RSNR?
The input voltage range is from 3.5 V to 26 V.
- What is the maximum charge current supported by the BQ25723RSNR?
The maximum charge current is up to 16.2 A or 8.1 A depending on the configuration.
- Does the BQ25723RSNR support USB Power Delivery (PD)?
- What is the purpose of the Input Current Optimizer (ICO) in the BQ25723RSNR?
The ICO helps to extract maximum input power without overloading the adapter.
- How does the BQ25723RSNR manage EMI noise?
The device uses TI patented switching frequency dithering pattern to reduce EMI noise.
- What is the Pass Through Mode (PTM) in the BQ25723RSNR?
PTM improves efficiency by directly passing input power to the system, reducing switching losses.
- What safety features does the BQ25723RSNR include?
The device includes thermal shutdown, input, system, battery overvoltage protection, and overcurrent protection.
- Does the BQ25723RSNR support USB On-the-Go (OTG) function?
- What is the Intel Vmin Active Protection (VAP) feature in the BQ25723RSNR?
The VAP feature charges up the VBUS voltage from the battery to store energy in input decoupling capacitors, preventing system voltage drops during peak power spikes.
- In what package is the BQ25723RSNR available?
The device is available in a 32-pin 4.0 mm × 4.0 mm WQFN package.
