Overview
The Texas Instruments BQ34Z100PWR is a sophisticated fuel gauge solution designed to support a wide range of battery chemistries, including Li-ion, LiFePO4, PbA, NiMH, and NiCd. This device operates independently of battery series-cell configurations and can handle batteries with voltages from 3 V to 16.7 KV through an external voltage translation circuit. The BQ34Z100PWR utilizes Texas Instruments' patented Impedance Track™ technology for accurate capacity estimation, ensuring high accuracy even in varying operating conditions.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | 14-pin TSSOP | |
| Operating Temperature Range | -40 to 85 | °C |
| Battery Voltage Range | 3 V to 16.7 KV | V |
| Maximum Battery Capacity | Up to 7000 Ah | Ah |
| Maximum Charge/Discharge Current | Up to 8160 A | A |
| Communication Interfaces | I2C, HDQ | |
| Power Modes | NORMAL: < 145 µA, SLEEP: < 84 µA, FULL SLEEP: < 30 µA | µA |
| Thermal Resistance (Junction-to-Ambient) | 103.8 °C/W | °C/W |
Key Features
- Supports Li-ion, LiFePO4, PbA, NiMH, and NiCd battery chemistries
- Capacity estimation using patented Impedance Track™ technology
- Aging and self-discharge compensation
- External NTC thermistor support
- Supports 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 via 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 BQ34Z100PWR support?
The BQ34Z100PWR supports Li-ion, LiFePO4, PbA, NiMH, and NiCd battery chemistries.
- What is the operating temperature range of the BQ34Z100PWR?
The operating temperature range is -40°C to 85°C.
- How does the BQ34Z100PWR estimate battery capacity?
The BQ34Z100PWR uses Texas Instruments' patented Impedance Track™ technology for capacity estimation.
- What are the power consumption modes of the BQ34Z100PWR?
The device has NORMAL, SLEEP, and FULL SLEEP modes, consuming less than 145 µA, 84 µA, and 30 µA respectively.
- Does the BQ34Z100PWR support external temperature measurement?
- What communication interfaces are available on the BQ34Z100PWR?
The device supports two-wire I2C and HDQ single-wire communication interfaces.
- How does the BQ34Z100PWR handle battery authentication?
The device includes SHA-1/HMAC-based battery pack authentication.
- Can the BQ34Z100PWR control multiple LEDs for state of charge indication?
- What is the maximum battery capacity supported by the BQ34Z100PWR?
The device supports battery capacities up to 7000 Ah.
- What are some typical applications of the BQ34Z100PWR?
Typical applications include light electric vehicles, medical instrumentation, mobile radios, power tools, and uninterruptible power supplies (UPS).
