Overview
The LTC6811HG-1#TRPBF is a multicell battery stack monitor produced by Analog Devices Inc. This device is designed to measure up to 12 series-connected battery cells with a high degree of accuracy, featuring a total measurement error of less than 1.2mV. It is suitable for most battery chemistries, with a cell measurement range of 0V to 5V. The LTC6811HG-1#TRPBF is particularly useful in applications requiring precise battery monitoring and management, such as in electric vehicles, renewable energy systems, and other high-voltage battery systems.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Total Measurement Error (TME) | C(n) to C(n – 1), GPIO(n) to V– = 0 | ±0.1 | ±0.8 | ±1.2 | mV |
| V+ Supply Voltage | TME Specifications Met | 11 | 40 | 55 | V |
| VREG Supply Voltage | TME Supply Rejection < 1mV/V | 4.5 | 5 | 5.5 | V |
| Junction Temperature | 150 | °C | |||
| Storage Temperature Range | –65 | 150 | °C | ||
| Lead Temperature (Soldering 10 sec) | 300 | °C | |||
| Package Type | 48-Lead Plastic SSOP | ||||
| Operating Temperature Range | –40 | 125 | °C |
Key Features
- Precision Measurement: Measures up to 12 series-connected battery cells with a total measurement error of less than 1.2mV.
- High-Speed Communication: Features an isoSPI interface for high-speed, RF-immune, long-distance communications.
- Multi-Chemistry Support: Suitable for most battery chemistries with a cell measurement range of 0V to 5V.
- Low Noise: All 12 cells can be measured in 290µs, with lower data acquisition rates available for high noise reduction.
- Scalability: Multiple LTC6811 devices can be connected in series for simultaneous cell monitoring of long, high-voltage battery strings.
- Fault Protection: Includes over-voltage and under-voltage protection features.
Applications
- Electric Vehicles: Ideal for battery management systems in electric vehicles.
- Renameable Energy Systems: Suitable for monitoring battery stacks in solar and wind energy systems.
- Industrial Battery Systems: Used in high-voltage battery systems for industrial applications.
- Energy Storage Systems: Applicable in energy storage systems requiring precise battery monitoring.
Q & A
- What is the maximum number of battery cells the LTC6811HG-1#TRPBF can measure?
The LTC6811HG-1#TRPBF can measure up to 12 series-connected battery cells.
- What is the total measurement error of the LTC6811HG-1#TRPBF?
The total measurement error is less than 1.2mV.
- What is the cell measurement range of the LTC6811HG-1#TRPBF?
The cell measurement range is from 0V to 5V.
- How long does it take to measure all 12 cells?
All 12 cells can be measured in 290µs.
- What type of communication interface does the LTC6811HG-1#TRPBF use?
The device features an isoSPI interface for high-speed, RF-immune, long-distance communications.
- Can multiple LTC6811 devices be connected in series?
Yes, multiple devices can be connected in series for simultaneous cell monitoring of long, high-voltage battery strings.
- What is the operating temperature range of the LTC6811HG-1#TRPBF?
The operating temperature range is from –40°C to 125°C.
- What type of package does the LTC6811HG-1#TRPBF come in?
The device comes in a 48-Lead Plastic SSOP package.
- Is the LTC6811HG-1#TRPBF suitable for automotive applications?
Yes, versions designated with a #3ZZ suffix are available for automotive applications.
- What are some common applications of the LTC6811HG-1#TRPBF?
Common applications include electric vehicles, renewable energy systems, industrial battery systems, and energy storage systems.
