Overview
The BQ25618YFFR is a highly integrated power management and battery charging IC produced by Texas Instruments. Designed for portable and battery-powered applications, this component combines a switch-mode battery charger, a synchronous boost converter, and voltage protection features into a single chip. It supports up to 22V input voltage and is optimized for charging single-cell Li-ion or Li-polymer batteries. The BQ25618YFFR is particularly suited for applications in consumer electronics, such as TWS (True Wireless Stereo) headphones, smartwatches, and other compact devices, where efficient power management and space-saving designs are critical.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Input Voltage Range | 3.9 to 22 | V | Supports high-voltage input |
| Charging Current | Up to 3 | A | Programmable |
| Battery Voltage | 3.5 to 4.65 | V | Single-cell Li-ion/Li-polymer |
| Efficiency | Up to 94 | % | Switch-mode operation |
| Package | DSBGA | - | Compact form factor |
| Operating Temperature | -40 to 85 | °C | Wide range |
| Protection Features | OVP, OCP, TSD | - | Overvoltage, overcurrent, thermal shutdown |
Key Features
- Integrated switch-mode charger and boost converter for efficient power management.
- Supports high input voltage up to 22V, making it suitable for various adapters.
- Programmable charging current up to 3A for fast charging.
- Low quiescent current in transport mode (6µA) to minimize battery leakage.
- Compact DSBGA package ideal for space-constrained designs.
- Comprehensive protection features including overvoltage, overcurrent, and thermal shutdown.
Applications
The BQ25618YFFR is widely used in portable and battery-powered devices, such as TWS headphones, smartwatches, fitness trackers, and other consumer electronics. Its high efficiency and compact design make it an excellent choice for applications requiring reliable and fast battery charging. Additionally, its robust protection features ensure safe operation in various environmental conditions.
Q & A
What is the maximum input voltage supported by the BQ25618YFFR?
The BQ25618YFFR supports an input voltage range of 3.9V to 22V.
What type of batteries can the BQ25618YFFR charge?
It is designed to charge single-cell Li-ion or Li-polymer batteries.
What is the maximum charging current?
The charging current is programmable up to 3A.
Does the BQ25618YFFR support fast charging?
Yes, it supports fast charging with programmable current up to 3A.
What is the efficiency of the BQ25618YFFR?
It offers up to 94% efficiency in switch-mode operation.
What protection features are included?
It includes overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown (TSD).
What is the operating temperature range?
The operating temperature range is -40°C to 85°C.
What package does the BQ25618YFFR use?
It uses a compact DSBGA package.
Is the BQ25618YFFR suitable for TWS headphones?
Yes, it is widely used in TWS headphones due to its compact size and efficient power management.
What is the quiescent current in transport mode?
The quiescent current in transport mode is as low as 6µA.
