Overview
The Texas Instruments BQ27441DRZR-G1B is a microcontroller peripheral designed to provide system-side fuel gauging for single-cell Li-Ion batteries. This device is part of the BQ27441-G1 series and is known for its high accuracy and minimal user configuration requirements. It utilizes the patented Impedance Track™ algorithm to gauge battery fuel, providing detailed information on remaining battery capacity, state-of-charge, and battery voltage. The BQ27441DRZR-G1B is ideal for space-constrained applications due to its small 12-pin, 2.50 mm × 4.00 mm, small outline no-lead (SON) package.
Key Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Cell Chemistry | Li-Ion/Li-Polymer | Number of Series Cells | Single Cell |
| Communication Interface | I2C | Battery Capacity (Min) | 200 mAh |
| Battery Capacity (Max) | 8000 mAh | Operating Temperature Range (°C) | -40 to 85 |
| Package Type | VSON (12 pins) | Package Size (mm) | 2.50 mm × 4.00 mm |
| External Capacity Indication | None | Gas Gauge Algorithm | Impedance Track™ |
| Implementation | System | RoHS Compliance | Compliant |
Key Features
- Single Series Cell Li-Ion Battery Fuel Gauge
- Resides on System Board, supporting embedded or removable batteries
- Powered directly from the battery with an integrated LDO (Low Dropout Regulator)
- Supports a low-value external sense resistor (10 mΩ)
- Battery fuel gauging based on patented Impedance Track™ technology
- Reports remaining capacity and state-of-charge (SOC) with smoothing filter
- Automatically adjusts for battery aging, self-discharge, temperature, and rate changes
- Battery state-of-health (aging) estimation
- Microcontroller peripheral supports 400-kHz I2C serial interface
- Configurable SOC interrupt or battery low digital output warning
- Internal temperature sensor or host-reported temperature
- High precision temperature sensing and voltage regulation
- Current limiting and safe charging protocol
Applications
The BQ27441DRZR-G1B is commonly used in a variety of portable electronic devices, including smartphones, tablets, laptops, wearables, and portable power banks. It provides accurate battery capacity measurements, fuel gauge functionality, and monitoring of voltage, current, temperature, and charge status, ensuring efficient power management and longer battery life in these devices.
Q & A
- What is the primary function of the BQ27441DRZR-G1B?
The primary function of the BQ27441DRZR-G1B is to provide system-side fuel gauging for single-cell Li-Ion batteries.
- What algorithm does the BQ27441DRZR-G1B use for fuel gauging?
The BQ27441DRZR-G1B uses the patented Impedance Track™ algorithm for fuel gauging.
- What is the operating temperature range of the BQ27441DRZR-G1B?
The operating temperature range is -40°C to 85°C.
- What communication interface does the BQ27441DRZR-G1B support?
The BQ27441DRZR-G1B supports a 400-kHz I2C serial interface.
- Does the BQ27441DRZR-G1B support external capacity indication?
No, the BQ27441DRZR-G1B does not support external capacity indication.
- What types of batteries does the BQ27441DRZR-G1B support?
The BQ27441DRZR-G1B supports single-cell Li-Ion and Li-Polymer batteries.
- What is the package type and size of the BQ27441DRZR-G1B?
The package type is VSON with 12 pins, and the size is 2.50 mm × 4.00 mm.
- Does the BQ27441DRZR-G1B have built-in protection features?
- What is the minimum and maximum battery capacity supported by the BQ27441DRZR-G1B?
The minimum battery capacity is 200 mAh, and the maximum is 8000 mAh.
- Is the BQ27441DRZR-G1B RoHS compliant?
