Overview
The BQ40Z50RSMT-R1, produced by Texas Instruments, is a fully integrated, single-chip solution designed for managing 1-series, 2-series, 3-series, and 4-series Li-Ion and Li-Polymer battery packs. This device incorporates Texas Instruments' patented Impedance Track™ technology, which accurately measures 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 an ideal choice for various battery-powered applications.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Package Type | 32-Lead QFN (RSM) | 4.00 mm × 4.00 mm |
| Operating Temperature | -40°C to 85°C | |
| Input Voltage Range | PACK, SMBC, SMBD, PRES, BTP_IN, DISP | 2.2 V to 26 V |
| Supply Current | Typical at TA = 25°C and VCC = 14.4 V | Varying values based on conditions (see datasheet for details) |
| Thermal Resistance | Junction-to-ambient thermal resistance (RθJA) | 47.4 °C/W |
| Interface | SMBus v1.1 compatible interface | |
| Authentication | SHA-1 authentication |
Key Features
- Impedance Track™ Technology: Accurately measures available charge in Li-Ion and Li-Polymer batteries.
- Gas Gauging and Protection: Measures and maintains records of capacity, voltage, current, temperature, and other critical parameters.
- Safety Protection: Software-based 1st- and 2nd-level protection against overvoltage, undervoltage, overcurrent, short-circuit current, overload, and overtemperature conditions.
- Cell Balancing: Integrated cell balancing while charging or at rest.
- Charge Algorithms: Sophisticated charge algorithms including JEITA, enhanced charging, adaptive charging, and TURBO BOOST mode.
- Battery Trip Point (BTP): Sends a BTP interrupt signal to the host system at pre-set state of charge thresholds.
- Diagnostic and Monitoring: Diagnostic lifetime data monitor and black box recorder.
- LED Display: Supports LED display for battery status indication.
- Authentication: SHA-1 authentication with secure memory for authentication keys.
Applications
- Notebook/Netbook PCs
- Medical and Test Equipment
- Portable Instrumentation
Q & A
- What is the BQ40Z50RSMT-R1 used for?
The BQ40Z50RSMT-R1 is used for managing 1-series, 2-series, 3-series, and 4-series Li-Ion and Li-Polymer battery packs, providing features for gas gauging, protection, and authentication.
- What is the operating temperature range of the BQ40Z50RSMT-R1?
The operating temperature range is -40°C to 85°C.
- What type of interface does the BQ40Z50RSMT-R1 support?
The device supports a two-wire SMBus v1.1 compatible interface.
- What safety protections does the BQ40Z50RSMT-R1 offer?
The device offers software-based 1st- and 2nd-level protection against overvoltage, undervoltage, overcurrent, short-circuit current, overload, and overtemperature conditions.
- Does the BQ40Z50RSMT-R1 support cell balancing?
Yes, it supports integrated cell balancing while charging or at rest.
- What is the purpose of the Battery Trip Point (BTP) feature?
The BTP feature sends an interrupt signal to the host system at pre-set state of charge thresholds.
- How does the BQ40Z50RSMT-R1 authenticate battery packs?
The device uses SHA-1 authentication with secure memory for authentication keys.
- What types of charge algorithms are supported by the BQ40Z50RSMT-R1?
The device supports sophisticated charge algorithms including JEITA, enhanced charging, adaptive charging, and TURBO BOOST mode.
- Does the BQ40Z50RSMT-R1 have diagnostic and monitoring capabilities?
Yes, it includes a diagnostic lifetime data monitor and black box recorder.
- What is the package type and size of the BQ40Z50RSMT-R1?
The device is packaged in a 32-Lead QFN (RSM) with dimensions of 4.00 mm × 4.00 mm.
