Microchip Technology, Inc. LIN System Basis Chip Including 3.3V Voltage Regulator and Wake-Input ATA663232

The Microchip ATA663232 system basis chip is a fully integrated LIN transceiver, designed according to the LIN specification 2.0, 2.1, 2.2, 2.2A and SAEJ2602-2, with a low-drop voltage regulator (3.3V/85mA) and a high voltage wake-input. The combination of voltage regulator and bus transceiver makes it possible to develop simple but powerful slave nodes in LIN bus systems. Microchip ATA663232 is designed to handle the low-speed data communication in vehicles (for example, in convenience electronics). Improved slope control at the LIN driver ensures secure data communication up to 20Kbaud. The bus output is designed to withstand high voltage. Sleep mode and silent mode guarantee minimized current consumption even in the case of a floating or a short-circuited LIN bus. The voltage regulator is a fully integrated low-drop voltage regulator, with 3.3V output voltage and 85mA current capability. It is especially designed for the automotive environment. A key feature is that the current consumption is always below 170µA (without load), even if the supply voltage is below the regulator's nominal output voltage. Additional Features ISO 26262 FuSa Ready Supply voltage up to 40V Operating voltage VS = 5V to 28V Sleep mode: typically 9μA Silent mode: typically 47μA Very low current consumption at low supply voltages (2V < VS < 5.5V): typically 130μA MLC (multi-layer ceramic) capacitor with 0Ohm ESR Normal, fail-safe, and silent mode: VCC = 3.3V ±2% Sleep mode: VCC is switched off VCC undervoltage detection with internal reset (NRES_int) Voltage regulator is short-circuit and over-temperature protected LIN physical layer according to LIN 2.0, 2.1, 2.2, 2.2A and SAEJ2602-2 Wake-up capability via LIN bus (100μs dominant) and WKin pin (100μs low level) Wake-up source recognition TXD time-out timer Bus pin is over-temperature and short-circuit protected versus GND and battery Advanced EMC and ESD performance Fulfills the OEM “Hardware Requirements for LIN in Automotive Applications Rev.1.3” Interference and damage protection according to ISO7637 AEC-Q100 and AEC-Q006 Package: VDFN8 with wettable flanks (Moisture Sensitivity Level 1) Built-in Safety Features Power-on Reset Voltage Monitoring (VS, VCC) TXD Dominant Timeout Overtemperature Detection