Overview
The BQ34Z100-G1 is a multi-chemistry Impedance Track™ standalone fuel gauge developed by Texas Instruments. This device is designed to support a wide range of battery chemistries, including Li-ion, LiFePO4, lead acid (PbA), NiMH, and NiCd. It operates independently of battery series-cell configurations and can handle batteries with voltages from 3 V to 65 V through an external voltage translation circuit. The BQ34Z100-G1 provides advanced features such as capacity estimation using patented Impedance Track™ technology, aging compensation, and self-discharge compensation, making it a robust solution for battery management in various applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Battery Capacity (Max) | 29 Ah | Ah |
| Battery Capacity (Min) | 100 mAh | mAh |
| Charge and Discharge Currents | Up to 32 A | A |
| Operating Voltage Range | 3 V to 65 V | V |
| Communication Interfaces | I2C, HDQ | |
| Package Type | 14-pin TSSOP | |
| Operating Temperature Range | -40°C to 85°C | °C |
| Power Modes | NORMAL: < 145 µA, SLEEP: < 84 µA, FULL SLEEP: < 30 µA | µA |
Key Features
- Supports Li-ion, LiFePO4, PbA, NiMH, and NiCd chemistries
- Capacity estimation using patented Impedance Track™ technology
- Aging and self-discharge compensation
- Supports battery capacities up to 29 Ah and charge/discharge currents up to 32 A
- External NTC thermistor support
- Two-wire I2C and HDQ single-wire communication interfaces
- SHA-1/HMAC authentication
- One- or four-LED direct display control, with support for more than four LEDs through a port expander
- Reduced power modes: NORMAL, SLEEP, and FULL SLEEP
Applications
- Light electric vehicles
- Medical instrumentation
- Mobile radios
- Power tools
- Uninterruptible power supplies (UPS)
Q & A
- What battery chemistries does the BQ34Z100-G1 support? The BQ34Z100-G1 supports Li-ion, LiFePO4, lead acid (PbA), NiMH, and NiCd chemistries.
- What is the operating voltage range of the BQ34Z100-G1? The device can handle batteries with voltages from 3 V to 65 V.
- What communication interfaces are available on the BQ34Z100-G1? The device supports two-wire I2C and HDQ single-wire communication interfaces.
- What is the maximum battery capacity supported by the BQ34Z100-G1? The device supports battery capacities up to 29 Ah.
- Does the BQ34Z100-G1 support external temperature sensing? Yes, it supports an external NTC thermistor.
- What are the power modes available on the BQ34Z100-G1? The device has NORMAL, SLEEP, and FULL SLEEP power modes.
- How does the BQ34Z100-G1 handle aging and self-discharge of batteries? The device includes aging and self-discharge compensation.
- What package type is the BQ34Z100-G1 available in? The device is available in a 14-pin TSSOP package.
- What is the operating temperature range of the BQ34Z100-G1? The operating temperature range is -40°C to 85°C.
- Does the BQ34Z100-G1 support LED display control? Yes, it supports one- or four-LED direct display control and more than four LEDs through a port expander.
