Overview
The BQ40Z50-R2 from Texas Instruments is a highly integrated, single-chip solution designed for managing 1-series, 2-series, 3-series, and 4-series Li-ion or Li-polymer battery packs. This device incorporates patented Impedance Track™ technology to accurately measure the available charge in Li-ion and Li-polymer batteries. It provides a comprehensive array of features for gas gauging, protection, and authentication, making it a robust and reliable choice for various battery-powered applications.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Package | 32-lead QFN (RSM) | 4.00 mm × 4.00 mm |
| Supply Voltage | VCC | 2.2 V to 20 V |
| Operating Temperature | TA | –40°C to 85°C |
| Supply Current (Normal Mode) | CHG on, DSG on, no Flash write | 336 µA (typical at 25°C and VCC = 14.4 V) |
| Supply Current (Sleep Mode) | CHG off, DSG on, no SBS communication | 75 µA (typical at 25°C and VCC = 14.4 V) |
| Supply Current (Shutdown Mode) | CHG off, DSG off, no SBS communication | 1.6 µA (typical at 25°C and VCC = 14.4 V) |
| Thermal Resistance (Junction-to-Ambient) | RθJA | 47.4 °C/W |
| Thermal Resistance (Junction-to-Case Top) | RθJC(top) | 40.3 °C/W |
| Thermal Resistance (Junction-to-Board) | RθJB | 14.7 °C/W |
Key Features
- Fully integrated 1-series, 2-series, 3-series, and 4-series Li-ion or Li-polymer cell battery pack manager and protection.
- Next-generation patented Impedance Track™ technology for accurate charge measurement.
- High-side N-CH protection FET drive.
- Integrated cell balancing while charging or at rest.
- Suitable for batteries between 100 mAh and 29 Ah.
- Full array of programmable protection features including voltage, current, temperature, charge timeout, and CHG/DSG FETs.
- Sophisticated charge algorithms – JEITA, Enhanced charging, Adaptive charging, and Cell balancing.
- Supports TURBO Mode 2.0 and battery trip point (BTP).
- Diagnostic lifetime data monitor and black box recorder.
- LED display support.
- Supports two-wire SMBus v1.1 interface.
- SHA-1 authentication and IATA support.
Applications
- Tablets
- Drones
- UPS/battery backup systems
- Medical equipment
- Handheld vacuum cleaners and vacuum robots
Q & A
- What is the BQ40Z50-R2 used for?
The BQ40Z50-R2 is used for managing 1-series, 2-series, 3-series, and 4-series Li-ion or Li-polymer battery packs, providing features for gas gauging, protection, and authentication.
- Does the BQ40Z50-R2 serve as both the Battery Management System (BMS) and the charger?
The BQ40Z50-R2 serves as a BMS but does not include a built-in charger. It controls the charger and discharger MOSFETs but requires an additional charger IC for charging the battery pack.
- What is the operating temperature range of the BQ40Z50-R2?
The operating temperature range is –40°C to 85°C.
- What communication interface does the BQ40Z50-R2 support?
The BQ40Z50-R2 supports a two-wire SMBus v1.1 interface.
- What is the typical supply current in normal mode?
The typical supply current in normal mode is 336 µA at 25°C and VCC = 14.4 V.
- Does the BQ40Z50-R2 support cell balancing?
- What are some of the programmable protection features of the BQ40Z50-R2?
The BQ40Z50-R2 includes programmable protection features for voltage, current, temperature, charge timeout, and CHG/DSG FETs.
- Does the BQ40Z50-R2 support any advanced charging algorithms?
- What is the purpose of the Impedance Track™ technology in the BQ40Z50-R2?
The Impedance Track™ technology accurately measures the available charge in Li-ion and Li-polymer batteries.
- What are some common applications of the BQ40Z50-R2?
