BQ28Z610DRZR-R1 is Battery Fuel Gauge IC with Impedance Track Technology for 1S-2S Li-ion Support and SHA-1 Authentication
Specifications
Manufacturer:
TI
Product Number:
BQ28Z610DRZR-R1
Description:
IC BATT MFUNC LI-ION 1-2CL 12SON
Highlight:
Impedance Track Technology Battery Fuel Gauge IC
,1S-2S Li-ion Support Battery Protection IC
,SHA-1 Authentication Integrated Circuit
Introduction
BQ28Z610DRZR-R1 Battery Fuel Gauge and Protection IC
This fully integrated, high-accuracy battery fuel gauge and protection IC combines autonomous charge control, precise state-of-charge monitoring, multi-level safety protection, cell balancing, and SHA-1 authentication for optimal battery management.
Product Overview
The BQ28Z610DRZR-R1 is a fully integrated, high-accuracy battery fuel gauge and protection IC from TI, specifically optimized for 1-series to 2-series (1S-2S) Li-ion and Li-polymer battery packs. It implements Impedance Track™ technology to provide precise state-of-charge (SOC), state-of-health (SOH), and remaining capacity estimation. The device integrates autonomous charging control, cell balancing, safety protection, and SHA-1 authentication in a compact 12-pin VSON (DRZ) package.
Core Functions
Fuel Gauge & Capacity Monitoring
- Uses Impedance Track™ algorithm for accurate SOC and capacity tracking
- Supports high-precision coulomb counting for charge/discharge measurement
- Reports real-time voltage, current, temperature, SOC, SOH, and run-time to full/empty
Autonomous Charge Control
- Manages CC-CV (constant-current, constant-voltage) charging autonomously
- Communicates charging parameters via master-mode I²C to reduce MCU load
- Supports zero-volt battery charging and recovery
Integrated Safety Protection
- Programmable overvoltage (OV), undervoltage (UV), overcurrent (OC), short-circuit (SC) protection
- Overtemperature and undertemperature protection for both battery and system
- High-side N-channel FET drive for safe disconnect
- Cell-detect and watchdog functions for enhanced reliability
Cell Balancing & Authentication
- Built-in passive cell balancing to extend battery life and equalize cell voltages
- SHA-1 authentication to help prevent counterfeit battery packs
Communication & Configuration
- I²C interface (up to 400 kHz) for host communication
- On-chip non-volatile memory for configuration and data logging
Typical Applications
Portable consumer electronics: power banks, tablets, Bluetooth speakers
Wearable devices: smartwatches, fitness bands, health monitors
Portable medical devices and handheld diagnostic equipment
Industrial handheld tools, scanners, and IoT battery-powered devices
Gaming accessories and portable audio devices
Low-voltage battery modules for automotive accessories
Key Features
1S-2S Li-ion / Li-polymer support
High accuracy Impedance Track™ fuel gauge
Autonomous charge control
Full protection suite: OV, UV, OC, SC, OT, UT
Passive cell balancing
SHA-1 authentication
I²C communication
12-pin VSON (DRZ) package
Operating temperature: −40°C to +85°C
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