ATA6621 Datasheet | Atmel

Features - - - - - - Supply Voltage up to 40V Operating Voltage VS = 5V to 18V Slew Rate Control according to LIN Specification 2.0 Supply Current during Sleep Mode Typically 10 µA Supply Current in Silent Mode Typically 40 µA Linear Low-drop Voltage Regulator: - Normal Mode: VCC = 5V ±2%/50 m A - Silent Mode: VCC = 5V ±7%/50 m A - Sleep Mode: VCC is Switched Off VCC Undervoltage Detection (10 ms Reset time) and Watchdog Reset Logically bined at Output NRES Possibility of Boosting the Voltage Regulator with an External NPN Transistor LIN Physical Layer according to LIN Specification 2.0 Wake-up Capability via LIN Bus or WAKE Pin Wake-up Recognition TXD Time-out Timer 60V Load Dump Protection at LIN Pin Bus Pin is Overtemperature and Short Circuit Protected versus GND and Battery Adjustable Watchdog Time via External Resistor Positive and Negative Trigger Input for Watchdog 5V CMOS patible I/O Pins to MCU Analog Temperature Monitor Output High EMC and ESD Level Package: QFN 5 × 5 with 20 Pins - - - - - - - - - - - - - - LIN Transceiver with 5V Regulator and Watchdog ATA6621 1. Description The ATA6621 is a fully integrated LIN transceiver, plying with the LIN specification, and with a low-drop voltage regulator for 5V/50 m A output and a window watchdog adjustable via an external resistor. In this QFN20 package, the voltage regulator is able to source 50 m A at VS = 18V even at an ambient temperature of 105°C. The output current of the regulator can be boosted by using an external NPN transistor. This bination makes it possible to develop simple, but powerful and cheap, slave nodes in LIN bus systems. ATA6621 is designed to handle the low speed data munication in vehicles, for example, in convenience electronics. Improved slope control at the LIN driver ensures secure data munication up to 20 k Baud. The bus output is capable of withstanding 60V. Sleep Mode and Silent Mode guarantee a very low current consumption. Rev. 4887B- AUTO- 01/06 Figure 1-1. Block Diagram 20...