Atmel公司LIN总线收发器ATA6623/ATA6625满足LIN 规范2.0指标,并集成了低压降的电压稳压器(3.3V/5V/50mA).这种总线收发器和电压稳压器的组合使得在LIN总线系统中开发功能强大的从接点变得非常简单.本文介绍了ATA6623/ATA6625的主要性嫩,方框图以及ATA6623/ATA6625应用电路图.

LIN Bus Transceiver with Integrated Voltage Regulator ATA6623
ATA6625
ATA6623/ATA6625 is a fully integrated LIN transceiver, designed according to the LIN
specification 2.0, with a low-drop voltage regulator (3.3V/5V/50 mA). The combination
of voltage regulator and bus transceiver makes it possible to develop simple, but powerful,
slave nodes in LIN Bus systems. ATA6623/ATA6625 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
20 kBaud with an RC oscillator for the protocol handling. The bus output is designed
to withstand high voltage. Sleep mode (voltage regulator switched off) and Silent
mode (communication off; VCC voltage on) guarantee minimized current consumption.

主要特性:
Supply Voltage up to 40V
Operating Voltage VS = 5V to 27V
Typically 10 μA Supply Current During Sleep Mode
Typically 57 μA Supply Current in Silent Mode
Linear Low-drop Voltage Regulator:
Normal, Fail-safe, and Silent Mode
ATA6623: VCC = 3.3V ±2%
ATA6625: VCC = 5.0V ±2%
Sleep Mode: VCC is Switched Off
VCC Undervoltage Detection with Reset Open Drain Output NRES (4 ms Reset Time)
Voltage Regulator is Short-circuit and Over-temperature Protected
LIN Physical Layer According to LIN Specification Revision 2.0 and SAEJ2602-2
Wake-up Capability via LIN Bus (90 μs Dominant)
TXD Time-out Timer
Bus Pin is Overtemperature and Short-circuit Protected versus GND and Battery
Advanced EMC and ESD Performance
ESD HBM 8 kV at Pins LIN and VS Following STM5.1
Interference and Damage Protection According to ISO/CD7637
Package: SO8



图1.ATA6623/ATA6625方框图.



图2.ATA6623/ATA6625应用电路图.

详情请见:

http://www.atmel.com/dyn/resources/prod_documents/doc4957.pdf

和

http://www.atmel.com/dyn/resources/prod_documents/doc9001.pdf

来源：中电网