Description
The Atmel® ATA6622C is a fully integrated LIN transceiver, which complies with the LIN 2.0, 2.1 and SAEJ2602-2 specifications. It has a low-drop voltage regulator for 3.3V/85mA output and a window watchdog. The Atmel ATA6624C has the same functionality as the Atmel ATA6622C; however, it uses a 5V/85mA regulator. The Atmel ATA6626C has the same functionality as Atmel ATA6624C without a TXD time-out timer. The voltage regulator is able to source 85mA, but the output current can be boosted by using an external NPN transistor. This chip combination makes it possible to develop inexpensive, simple, yet powerful slave and master nodes for LIN-bus systems.

FEATUREs
● Master and slave operation possible
● Supply voltage up to 40V
● Operating voltage VS = 5V to 27V
● Typically 10µA supply current during Sleep Mode
● Typically 57µA supply current in Silent Mode
● Linear low-drop voltage regulator, 85mA current capability:
● Normal, Fail-safe, and Silent Mode
● Atmel ATA6622C VCC = 3.3V ±2%
● Atmel ATA6624C VCC = 5.0V ±2%
● Atmel ATA6626C VCC = 5.0V ±2%, TXD time-out timer disabled
● In Sleep Mode VCC is switched off
● VCC- undervoltage detection (4ms reset time) and watchdog reset logical combined at open drain output NRES
● Negative trigger input for watchdog
● Boosting the voltage regulator possible with an external NPN transistor
● LIN physical layer according to LIN 2.0, 2.1 and SAEJ2602-2
● Wake-up capability via LIN-bus, wake pin, or Kl_15 pin
● INH output to control an external voltage regulator or to switch off the master pull up resistor
● TXD time-out timer; Atmel ATA6626C: TXD time-out timer Is disabled
● Bus pin is overtemperature and short circuit protected versus GND and battery
● Adjustable watchdog time via external resistor
● Advanced EMC and ESD performance
● Fulfills the OEM “Hardware Requirements for LIN in automotive Applications Rev.1.0”
● Interference and damage protection according to ISO7637
● Qualified according to AEC-Q100
● Package: QFN 5mm x 5mm with 20 pins (Moisture Sensitivity Level 1)