LIN Bus
Transceiver
with Integrated
Voltage
Regulator
ATA6620
Preliminary
Rev. 4850A–AUTO–02/05
Features
• Supply Voltage up to 40V
Operating Voltage V
S
= 5V to 18V
Typically 10 µA Supply Current During Sleep Mode
Typically 40 µA Supply Current in Silent Mode
Linear Low-drop Voltage Regulator:
– Normal Mode: V
CC
= 5V ±2%/50 mA
– Silent Mode: V
CC
= 5V ±7%/50 mA
–Sleep Mode: V
CC
is Switched Off
V
CC
Undervoltage Detection with Reset Output NRES (10 ms Reset Time)
Voltage Regulator is Short-circuit and Over-temperature Protected
LIN Physical Layer According to LIN Specification Revision 2.0
Wake-up Capability via LIN Bus (90 µs Dominant)
TXD Time-out Timer (9 ms)
60V Load-dump Protection at LIN Pin
Bus Pin is Overtemperature and Short-circuit Protected versus GND and Battery
High EMC Level
5V CMOS-Compatible I/O Pins to MCU
ESD HBM 6kV at Pins LIN and VS
Interference and Damage Protection According to ISO/CD7637
Package: SO8
1. Description
ATA6620 is a fully integrated LIN transceiver, designed according to the LIN specifica-
tion 2.0, with a low-drop voltage regulator (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. ATA6620 is designed to handle the low-speed data com-
munication 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; V
CC
voltage on) guarantee minimized current consumption.