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AS8520 数据表(PDF) 1 Page - ams AG |
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AS8520 数据表(HTML) 1 Page - ams AG |
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1 / 34 page  AS8520 LIN Transceiver with Voltage Regulator, Attenuator, Relay Drivers, MCU Interface for Automotive Applications www.austriamicrosystems.com/Lin_CompanionIC/AS8520 Revision 0.01 1 - 34 Preliminary Data Sheet 1 General Description The AS8520 is a companion IC for sensor and actuator LIN slaves. The device provides application specific add-ons, such as the resistive attenuator for battery voltage sensing, a micro controller interface to control 2 relay drivers, to access control register, and diagnosis options. The AS8520 has a window watchdog which can be enabled as a factory option. 2 Key Features Operating voltage 6 to 18V, max. 42V for 500 ms Linear, low-drop voltage regulator: VCC = 5V ± 3% or VCC = 3.3V as a factory option 50mA load current Typical 35 µA quiescent current in standby mode Undervoltage detection with reset output, factory adjustable undervoltage threshold and reset time LIN bus transceiver with load independent slew control con- forming to LIN 2.0 and SAE J2602, short circuit protection, TX time out fail safe feature, over temperature warning and shut down Micro controller 4-wire interface for relay driver control, device configuration, status and diagnosis read out, register read / write Operating modes: Normal and Standby or Normal and Sleep as a factory option Window Watchdog with timing options if factory enabled Backup registers to store MCU data during VCC shut down Voltage attenuator with disable. Factory selectable ratio options of 21 and 481 Two low side relay drivers RON < 5 Ω -40ºC to +125ºC ambient operating temperature AEC Q 100 automotive qualified 6kV ESD on LIN pin according to IEC 61000-4-2 24bit chip ID for traceability and module ID 24-pin QFN (6x6) package 3 Applications The AS8520 is suitable for small actuator or sensor LIN slaves. The device is ideal for LIN 2.0/2.1 network applications like Window lift actuators, Sunroof actuators, Seat actuators and battery sensors. Figure 1. AS8520 Lin Transceiver Block Diagram VSUP EN VCC Mode Control Temperature Limiter Reset Block TSHD RESET BUS 30k RX Receiver VSUP VCC TX Transmitter VSS POR- VSUP RESET_VSUP_N VBAT_DIV VBAT LDRIVE1 LDRIVE2 CS SCLK SDO SDI SPI Interface, Diagnostic, Window Watchdog (WWD) VCC VCC LDO POR- VCC Slew Control LIN Wakeup Control Signals LIN Transceiver Relay driver Resistive divider RESET_VSUP_N RESET_VCC_N WWD Output GND GND VSS AS8520 |
类似零件编号 - AS8520 |
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类似说明 - AS8520 |
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