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AS8650 Datasheet(PDF) 1 Page - ams AG |
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AS8650 Datasheet(HTML) 1 Page - ams AG |
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1 / 46 page  AS8650 High-efficient Power Management Device with High-speed CAN Interface www.austriamicrosystems.com/AS8650 Revision 1.0 1 - 46 Datasheet 1 General Description The AS8650 is a companion IC which combines power management functions and a fully conforming high speed CAN Transceiver in one high performance analog device for automotive applications. The AS8650 is powered by the battery, provides 4 output voltage levels of which 3 outputs can be individually programmed in the range of 1.8V to 3.3V with a maximum current consumption up to 120mA at the LDO voltage regulator outputs. An integrated DCDC converter with a very high efficiency for the 5V output supplies the 3 voltage regulators and ensures a voltage stability of ± 2.5%. The combination of DCDC converter with low-drop-out voltage regulators makes the AS8650 suitable for all Automotive Control Units where power efficiency is a must. The AS8650 provides a high-speed CAN interface up to 1Mbps communication rate conforming to ISO 11898. The AS8650 provides wake-up via remote wake-up at CAN bus lines and a local wake pin. The watchdog unit provides three different timing functions: start-up, window- and time-out watchdog; configurable via the SPI and I2C interface. Voltage monitoring is implemented for the battery supply, DCDC output and the 3 LDO regulator outputs. Undervoltage will be signalled on the INTN pin to the microcontroller. All diagnostics and status flags can be accessed with the SPI interface. The product is available in a 36-pin QFN (6x6x0.9) package. 2 Key Features DCDC converter for 5V output with very high efficiency 2 programmable voltage regulators in the range of 1.8V to 3.3V High-speed CAN interface (ISO 11898) with remote wake-up Comprehensive voltage monitoring Configurable watchdog functions for start-up, operation, and standby Automatic thermal shutdown protection Excellent EMC performance with outstanding switching technology for the DCDC converter Ambient temperature range from -40°C to +105°C in maximum load conditions Lead-free 36-pin QFN (6x6x0.9) package 3 Applications The AS8650 provides high efficient and flexible power supply together with state-of-the-art high speed CAN Interface for automotive control units.The device is pin compatible with AS8550 (LIN interface) in order to change from CAN to LIN easy. DC / DC Converter 5V I2C SPI High-speed CAN Transceiver Watchdog CSSPI SCLKI2C /SCLKSPI I2C_EN CANH RxD TxD RESET FB Configurable Voltage Regulator Configurable Voltage Regulator Configurable Voltage Regulator VREG Digital Logic INTN WAKE V5V_LDO1 V5V_LDO2 V5V_LDO3 GND VSUP LX VREG VREG SPLIT CANL SDAI2C / SDISPI SDOSPI AS8650 Figure 1. AS8650 Block Diagram |
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