BQ20Z90DBTR-V150

The bq20Z90DBTR-V150 is TI’s fuel gauge IC for Li‑ion/Li‑polymer battery packs. It implements a full gas‑gauge system (often using Impedance Track) to provide accurate state of charge (SOC), remaining capacity, and health, while also performing basic pack protection. Core functions include coulomb counting, voltage/current sensing, open‑circuit voltage tracking, temperature sensing, and a SMBus (I2C‑like) interface to the host controller. It supports programmable capacity learning, battery identification, alarms, and data logging, enabling robust battery management in mobile/portable devices. The -V150 suffix denotes a specific revision/packaging variant; exact electrical specs, pinout, and package details vary by variant, so consult the TI datasheet for your lot. Typical applications include smartphones, tablets, laptops, power tools, and other Li‑ion packs requiring reliable gauging and safety features. For detailed specs, development flow, and reference designs, see TI’s bq20Z90 product page and use TI’s bqStudio tool.

Here are the key features of TI bq20Z90DBTR-V150 (Impedance Track gas gauge):
- Impedance Track technology for highly accurate state-of-charge (SOC), remaining capacity, and health estimation with adaptive modeling.
- Coulomb counting with automatic capacity learning and compensation for sensor drift.
- Monitors essential pack parameters: cell voltage, pack current, pack temperature (NTC), and impedance (magnitude/phase).
- SMBus/I2C interface with host communication, alarms/interrupts, and optional PEC support.
- On-chip calibration data and battery-profile memory (calibration, FCC/design capacity, etc.) to tailor the gauge to each pack.
- Displays SOC, state-of-health (SOH), remaining capacity, and runtime estimates.
- Safety and fault monitoring: overvoltage/undervoltage, overcurrent/short-circuit, overtemperature, and data integrity checks.
- Low quiescent current with wake-on-SMBus operation for power savings.
- Programmable thresholds and configurable parameters to fit various pack designs.
- Support for multi-cell Li-ion/Li-polymer packs within the Gauge family’s scope (typical for consumer/applications).
Note: For exact packaging, cell-count support, and electrical specifications, consult the datasheet and product folder.

VQFN-32 package (32-pin, 5×5 mm, 0.8 mm pitch).

- Pin count: 28 pins
- Function: TI bq20Z90 digital battery gas gauge (fuel gauge) for Li-ion/Li-polymer packs; performs coulomb counting, voltage/current/temperature monitoring, SOC/SOH estimation, and communicates via SMBus/I2C with the host system.

Manufacturer: Texas Instruments Incorporated (TI).
Kind of company: American multinational technology and semiconductor company that designs and manufactures analog and embedded processing ICs, among other semiconductor products.

BQ20Z90DBTR-V150 is a Li‑ion/Li‑polymer battery fuel gauge IC. Applications: battery packs for portable electronics and cordless devices needing SOC, remaining capacity, health estimates, and safety control. Common uses include smartphones/tablets/handheld devices, notebook PCs, wearable devices, medical equipment, cordless tools, and other portable/industrial battery packs.

Direct one-to-one equivalents for BQ20Z90DBTR-V150 do not exist; it’s a legacy TI gas gauge. For a modern replacement, consider TI gas gauges such as BQ40Z50 or BQ28Zxxx families, depending on your pack requirements. Migration is not drop-in and may require firmware/pack redesign. Use TI’s cross-reference tool or contact TI support for the closest cross-reference.