Datasheet
AS8530
LIN Tr a ns ce i ve r w it h I nt eg ra t e d Volt a ge Re gul at or a nd
MCU Interface for Automotive Applications
1 General Description
The AS8530 is a general purpose companion IC for sensor and
actuator LIN slaves offering LIN transceiver and low drop voltage
regulator.
It also provides a 2-wire microcontroller interface through shared EN
and TX pins to access a window watchdog with RC oscillator, control
registers, backup registers and monitoring information.
The IC is fabricated in a high voltage CMOS technology which is
able to withstand voltages up to 42V.
The product is available in ep-SOIC8 package.
Typically 45µA quiescent current in standby mode,
Typically 35µA quiescent current in sleep mode
Under voltage reset with factory options
LIN bus transceiver l conforming to LIN 2.1, TX time out fail
safe feature, over temperature warning and shut down
Window watchdog if factory enabled
Micro controller 2-wire interface through shared pins for
watchdog trigger, monitoring, register read /write
Chip ID for traceability and module ID
8 Backup registers to store data during VCC shut down
ep-SOIC8 package
-40ºC to +125ºC ambient operating temperature
2 Key Features
Operating voltage 6V to 18V
Linear, low-drop voltage regulator: VCC = 5V ±5% or 3.3V ±5%
as a factory programming option
50mA load current
Operating modes: Normal and Standby or Normal and Sleep as
a factory option
Figure 1. AS8530 LIN Transceiver Block Diagram
3 Applications
The AS8530 is a System Basis Chip for automotive LIN networked
sensor or actuator slaves.
VSUP
LDO
VCC
POR-VSUP
Temperature
Limiter
TSHD
AS8530
Control
Signals
POR-VCC
RESET_VSUP_N
RESET_VCC_N
EN
Mode
Control
LIN
Wakeup
WWD Output
Reset
Block
RESET
RESET_VSUP_N
2-Wire
Interface
Window
Watchdog
(WWD)
VSUP
Receiver
RX
30k
Transmitter
Slew
Control
VCC
15k
LIN
TX
GND
LIN Transceiver
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