Overview
The LTC6811HG-1#3ZZPBF from Analog Devices Inc. is a multicell battery stack monitor designed to measure the voltage of up to 12 series-connected battery cells. This device is particularly suited for monitoring various battery chemistries, given its cell measurement range of 0V to 5V. The LTC6811HG-1#3ZZPBF is part of the LTC6811 family, which is known for its high accuracy and reliability in battery management systems.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Cell Measurement Range | 0 | 5 | V | ||
| Total Measurement Error | 1.2mV | mV | |||
| Measurement Time for 12 Cells | 290µs | µs | |||
| Digital Supply Voltage (VREGD) | 2.7 | 3 | 3.6 | V | |
| Operating Temperature Range | –40°C | 125°C | °C | ||
| Thermal Shutdown Temperature | 150°C | °C | |||
| Package Type | 48-Lead Plastic SSOP |
Key Features
- High Accuracy Measurement: Total measurement error of less than 1.2mV for up to 12 series-connected battery cells.
- Fast Measurement Time: All 12 cells can be measured in 290µs, with options for lower data acquisition rates for high noise reduction.
- Flexible Communication Interface: IsoSPI interface for high-speed, RF-immune, long-distance communications.
- Multi-Device Capability: Multiple LTC6811 devices can be connected in series for simultaneous cell monitoring of long, high-voltage battery strings.
- General Purpose I/O Pins: GPIO pins available for various digital output applications.
- Automotive Grade: Available in automotive grade (AEC-Q100 qualified) for use in automotive applications.
Applications
- Electric Vehicles (EVs): Monitoring battery health and state of charge in EV battery packs.
- Hybrid Electric Vehicles (HEVs): Ensuring optimal battery performance and longevity.
- Energy Storage Systems (ESS): Monitoring battery stacks in grid-scale energy storage applications.
- Industrial Battery Systems: Managing and monitoring industrial battery packs for various applications.
- Renewable Energy Systems: Integrating with solar and wind power systems to monitor battery health.
Q & A
- What is the maximum number of battery cells the LTC6811HG-1#3ZZPBF can measure?
The LTC6811HG-1#3ZZPBF can measure up to 12 series-connected battery cells.
- What is the total measurement error of the LTC6811HG-1#3ZZPBF?
The total measurement error is less than 1.2mV.
- How long does it take to measure all 12 cells?
All 12 cells can be measured in 290µs.
- What is the operating temperature range of the LTC6811HG-1#3ZZPBF?
The operating temperature range is –40°C to 125°C.
- What type of communication interface does the LTC6811HG-1#3ZZPBF use?
The device uses an isoSPI interface for high-speed, RF-immune communications.
- Can multiple LTC6811 devices be connected in series?
Yes, multiple devices can be connected in series for simultaneous monitoring of long, high-voltage battery strings.
- Is the LTC6811HG-1#3ZZPBF suitable for automotive applications?
Yes, it is available in an automotive grade (AEC-Q100 qualified) for use in automotive applications.
- What is the package type of the LTC6811HG-1#3ZZPBF?
The package type is a 48-Lead Plastic SSOP.
- Does the LTC6811HG-1#3ZZPBF have general purpose I/O pins?
Yes, it has GPIO pins available for various digital output applications.
- What is the thermal shutdown temperature of the LTC6811HG-1#3ZZPBF?
The thermal shutdown temperature is 150°C.
