BQ40Z80RSMT
| Parameters | |
|---|---|
| Series | - |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | 32-VFQFN Exposed Pad |
| Interface | SMBus |
| Mfr | Texas Instruments |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Number of Cells | 2 ~ 7 |
| Battery Chemistry | Lithium Ion/Polymer |
| Supplier Device Package | 32-VQFN (4x4) |
| Function | Multi-Function Controller |
| Fault Protection | Over Current, Over Temperature, Over/Under Voltage, Short Circuit |
| Package | Tape & Reel (TR) |
| Product Status | Active |
| Base Product Number | BQ40Z80 |
| REACH Status | REACH Unaffected |
| Standard Package | 250 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
BQ40Z80RSMT Li‑Ion Battery Pack Manager IC
The BQ40Z80RSMT by Texas Instruments is a fully integrated multi‑function battery management IC designed for 2‑ to 6‑series cell Li‑ion, Li‑polymer, and LiFePO4 battery packs, delivering precision gas gauging, robust protection, and secure authentication in a compact 4mm×4mm 32‑pin VQFN package. Operating from a 2.2V to 32V supply and supporting 500mAh to 65,000mAh battery capacities, it leverages TI’s patented next‑generation Impedance Track™ algorithm to accurately monitor available charge, voltage, current, and temperature, while communicating with host systems via an SMBus v1.1 interface. This industrial‑grade IC (-40°C to +85°C) integrates all monitoring, protection, and authentication functions, serving as a compact, reliable, and cost‑effective solution for smart battery pack designs.
This IC integrates comprehensive software‑based 1st‑ and 2nd‑level safety protection against overvoltage, undervoltage, overcurrent, short‑circuit, overload, and overtemperature faults, plus support for TURBO Mode 2.0/Intel DBPTv2 to report max power/current to hosts. It offers ECC or SHA‑1 authentication with secure key memory for genuine battery identification, eight multi‑function configurable pins, and both internal/external cell balancing, ensuring flexibility and security.
Optimized for smart battery systems, it is widely used in laptops and notebooks, tablets and portable electronics, power tools, medical devices, industrial portable equipment, and IoT devices, delivering accurate monitoring, reliable protection, and secure authentication across diverse portable power applications.
Alternative BMS IC Models
1. BQ40Z70RSMT (TI): 2–4 cell Li‑ion BMS IC with Impedance Track™ gauging and basic protection, ideal for cost‑sensitive low‑cell‑count portable devices.
2. MAX17201 (Maxim): 2–6 cell Li‑ion battery manager with accurate gas gauging, robust protection, and I2C interface for portable electronics and power tools.
3. RT9471 (Richtek): Integrated 2–5 cell Li‑ion BMS with cell balancing, overvoltage/overcurrent protection, and SMBus interface for industrial and consumer batteries.
4. BQ20Z95 (TI): Legacy 2–6 cell Li‑ion gas gauge IC with basic protection and SHA‑1 authentication, suitable for drop‑in replacement in existing low‑security battery packs.
