The MLX80051 from Melexis extends its successful LIN transceiver and system basis product line for the simple and effective development of LIN slaves. This IC combines a physical layer LIN transceiver according to LIN 2.x, as well as SAEJ2602 with a 5 V voltage regulator with RESET output for the connected microcontroller and a window watchdog. This IC is optimized in accordance with the increased EMC requirements for single-wire bus systems as well as the “Hardware requirements for LIN, CAN and Flexray interfaces in automotive applications” defined from German OEMs. The MLX80051 achieves world leading ESD robustness of >20 kV with direct discharge as well as >15 kV with indirect discharge according to IEC61000-4-2.
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- Low current consumption (typ) sleep mode 20 μA,
silent mode “noload” 45 μA
- Direct ESD discharge for pin LIN >20 kV (only Lin cap connected) and for pin VBAT >15 kV
- Automotive temperature range of –40°C to 125°C
- Interface I/Os independent from voltage regulator output
- Low slew mode for optimized SAE J2602 transmission
- High-impedance LIN pin in case of loss of ground or battery
- Bus input voltages -24 V to 30 V independent from VBAT
- Remote and local wake-up source recognition
- VCC undervoltage detection at NRES output (start-up delay 4 ms)
- VSUP undervoltage detection (POR), over-temperature shutdown
- TxD dominant time-out function, standby mode time-out after 350 ms
- Enhanced ESD robustness according to IEC 61000-4-2
- Output current extension via external transistor
- Indirect ESD discharge for pin LIN >15 kV
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- Programmable window watchdog
- LIN 2.x / SAE J2602 compliant
- Operating voltage VSUP = 5 ... 18 V
- 3 modes: normal, silent, and sleep
- Linear low-drop voltage regulator
- Normal mode 5 V / 70 mA ±2%
- Silent mode 5 V / 20 mA ±2%
- Additional WAKE input
- Output current limitation
- LIN-bus transceiver
- Baud rate up to 20 kBaud
- Ignition input
- Slew rate control for best EME behavior
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