Overview
The LTC6811HG-2#3ZZTRPBF, produced by Analog Devices Inc., is a multicell battery stack monitor designed to measure up to 12 series-connected battery cells with high precision. This IC is part of the LTC6811 family, which is suitable for most battery chemistries due to its cell measurement range of 0V to 5V. The device is particularly useful in applications requiring accurate and simultaneous monitoring of long, high-voltage battery strings.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Number of Cells | 1 | - | 12 | - |
| Measurement Error | - | - | 1.2mV | mV |
| Measurement Time (All 12 Cells) | - | 290µs | - | µs |
| V+ Supply Voltage | 11 | - | 55 | V |
| VREG Supply Voltage | 4.5 | 5 | 5.5 | V |
| Operating Temperature | -40°C | - | 125°C | °C |
| Package Type | - | - | SSOP-48 | - |
Key Features
- High-Speed Communication: The LTC6811HG-2#3ZZTRPBF features an isoSPI interface for high-speed, RF-immune, and long-distance communications.
- Flexible Configuration: Multiple devices can be connected in series (daisy chain) or in parallel to the host processor, with each device individually addressed.
- Passive Balancing: Includes passive balancing for each cell with individual PWM duty cycle control.
- Onboard Regulator: Equipped with an onboard 5V regulator.
- General Purpose I/O: Five general-purpose I/O lines are available.
- Low Power Mode: A sleep mode reduces current consumption to 4µA.
- Thermal Shutdown: Thermal shutdown at 150°C for protection.
Applications
- Battery Management Systems (BMS): Ideal for monitoring and managing battery stacks in electric vehicles, renewable energy systems, and other high-voltage battery applications.
- Industrial Power Systems: Suitable for industrial battery management, including backup power systems and energy storage solutions.
- Aerospace and Defense: Can be used in aerospace and defense applications requiring precise battery monitoring and management.
Q & A
- What is the maximum number of battery cells the LTC6811HG-2#3ZZTRPBF can monitor?
The LTC6811HG-2#3ZZTRPBF can monitor up to 12 series-connected battery cells.
- What is the measurement error of the LTC6811HG-2#3ZZTRPBF?
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-2#3ZZTRPBF?
The operating temperature range is from -40°C to 125°C.
- What type of communication interface does the LTC6811HG-2#3ZZTRPBF use?
The device uses an isoSPI interface for high-speed, RF-immune, and long-distance communications.
- Can multiple LTC6811 devices be connected in series or parallel?
Yes, multiple devices can be connected in series (daisy chain) or in parallel to the host processor.
- Does the LTC6811HG-2#3ZZTRPBF support passive balancing?
Yes, it includes passive balancing for each cell with individual PWM duty cycle control.
- What is the power consumption in sleep mode?
In sleep mode, the current consumption is reduced to 4µA.
- What is the thermal shutdown temperature of the LTC6811HG-2#3ZZTRPBF?
The thermal shutdown temperature is 150°C.
- What package type is the LTC6811HG-2#3ZZTRPBF available in?
The device is available in a 48-lead SSOP package.
