Overview
The BQ25120AYFPR is a highly integrated battery charge management IC designed by Texas Instruments. This device is optimized for single-cell Li-Ion and Li-Polymer batteries, making it ideal for wearable devices, IoT applications, and other compact, battery-operated systems. It combines a linear battery charger, a regulated output, a load switch, a manual reset with timer, and a battery voltage monitor, all within a small DSBGA-25 package. The BQ25120AYFPR is known for its low quiescent current, high efficiency, and extensive programmability via the I2C interface, ensuring maximum battery life and flexible operation.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Battery Type | Single-cell Li-Ion / Li-Polymer | - |
| Input Voltage Range | 2.7V to 5.5V | - |
| Charge Current | Programmable up to 500 mA | - |
| Quiescent Current | 700 nA (typical in ship mode) | - |
| Output Voltage Range (DC-DC) | 1.8V to 3.6V | - |
| LDO Output | 1.8V (fixed) or adjustable | - |
| I2C Interface | Supports programmable settings | - |
| Operating Temperature Range | -40°C to +85°C | - |
| Package Type | DSBGA-25 (2.42 mm x 2.42 mm) | - |
Key Features
- Integrated Battery Charger: Supports up to 500 mA charge current with programmable settings via I2C.
- Efficient Power Path Management: Automatically switches between input power and battery power, optimizing power consumption.
- DC-DC Buck Converter: Offers high efficiency with a programmable output voltage, suitable for powering various components.
- Low-Dropout Regulator (LDO): Provides a stable output for low-current devices with minimal power loss.
- Battery Protection: Includes overcurrent, overvoltage, and thermal protection to ensure safe operation.
- I2C Interface: Allows easy programming of parameters such as charge current, output voltage, and power modes.
- Compact Package: The DSBGA-25 package is designed for minimal space usage, ideal for small form-factor devices.
- Low Power Consumption: Optimized for battery-operated applications, with an ultra-low quiescent current of 700 nA in ship mode.
Applications
- Wearable Devices: Smart watches, fitness accessories, health monitoring medical accessories, and other wearable electronics.[
- IoT Devices: Suitable for various IoT applications where compact size and low power consumption are essential.[
- Rechargeable Toys: Ideal for toys and other consumer electronics that require efficient battery management.[
Q & A
- What is the BQ25120AYFPR used for?
The BQ25120AYFPR is used for battery charge management in wearable devices, IoT applications, and other compact, battery-operated systems.
- What type of batteries does the BQ25120AYFPR support?
The BQ25120AYFPR supports single-cell Li-Ion and Li-Polymer batteries.
- What is the input voltage range of the BQ25120AYFPR?
The input voltage range is from 2.7V to 5.5V.
- What is the maximum charge current of the BQ25120AYFPR?
The maximum charge current is programmable up to 500 mA.
- What is the quiescent current of the BQ25120AYFPR in ship mode?
The quiescent current is 700 nA (typical) in ship mode.
- What is the operating temperature range of the BQ25120AYFPR?
The operating temperature range is -40°C to +85°C.
- What package type does the BQ25120AYFPR use?
The BQ25120AYFPR is housed in a DSBGA-25 package.
- Does the BQ25120AYFPR have battery protection features?
Yes, it includes overcurrent, overvoltage, and thermal protection features.
- How is the BQ25120AYFPR programmed?
The device is programmed via the I2C interface, allowing for the setting of various parameters such as charge current and output voltage.
- What are some typical applications of the BQ25120AYFPR?
Typical applications include wearable devices, IoT devices, and rechargeable toys.[
