Product overview
Description
L99BM2T/L99BM2TS are bidirectional SPI transceivers that, in a BMS system, allow communication between isolated devices in different voltage domains through a twisted-pair connection.
The devices belong to the L99BM2 chipset family for high-voltage battery management systems monitoring and control.
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All features
- -40°C to +125°C operating temperature range
- HBM ESD classification level 2
- CDM ESD classification level C4B
- Automatic wake-up of BMS / BMU MCU and PMIC from SHUTDOWN / SLEEP mode in case of fault detected in the chain
- Single or dual channel p/n in the same package for ring connection
- Up to 59 devices in chain supported
- Cable lengths verified up to 10 meters
- 10 MHz 4-wire SPI interface
- 4 Mbps 2-wire vertical interface (VIF)
- Supports both transformer and capacitive isolation
- Compressed burst data read for enhanced communication speed over the whole chain
- Broadcast write command to configure and control all devices in the chain (or a subset)
- Very Low EMI Susceptibility and Emissions
- Compatible with 3.3V and 5V logics
- Supply voltage from 6 to 24V
EDA Symbols, Footprints and 3D Models
STMicroelectronics - L99BM2T
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Longevity Commitment | Longevity Starting Date | Material Declaration** |
|---|---|---|---|---|---|---|---|
| L99BM2T-TR | Active | LQFP 32 7x7x1.4 mm | Automotive Safety | Ecopack2 | - | - |
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
| Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| L99BM2T-TR | | | distributors No availability of distributors reported, please contact our sales office |
L99BM2T-TR Active
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors