ATA663454-GDQW

Designed in compliance with LIN specifications 2.0, 2.1, 2.2, 2.2A and SAEJ2602-2, the Microchip ATA663431/ATA663454 is a new generation of system basis chips with a fully integrated LIN transceiver, a low-drop voltage regulator (3.3V/5V/85mA), a window watchdog, and a high-side switch. This combination makes it possible to develop simple, but powerful, slave nodes in LIN-bus systems. Microchip ATA663431/ATA663454 is designed to handle low-speed data communication in vehicles (such as 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 a minimized current consumption even in the case of a floating or short-circuited LIN bus.

• Supply voltage up to 40V
• Operating voltage VVS = 5V to 28V
• Supply current
  • Sleep mode: typically 10µA
  • Silent mode: typically 47µA
  • Very low current consumption at low supply voltages (2V < VVS < 5.5V): typically 150µA
• Linear low-drop voltage regulator, 85mA current capability:
  • MLC (multi-layer ceramic) capacitor with 0O ESR
  • Normal, fail-safe, and silent mode
  • Atmel ATA663454: VCC = 5.0V ±2%
  • Atmel ATA663431: VCC = 3.3V ±2%
  • Sleep mode: VCC is switched off
• VCC undervoltage detection with open drain reset output (NRES, 4ms reset time)
• Voltage regulator is short-circuit and over-temperature protected
• Adjustable watchdog time via external resistor
• Negative trigger input for watchdog
• Limp Home watchdog failure output
• LIN physical layer according to LIN 2.0, 2.1, 2.2, 2.2A and SAEJ2602-2
• Bus pin is overtemperature and sho