AS8525

AS8525 LIN Transceiver with Voltage Regulators, Programmable Gain High Side Amplifier, and Voltage Attenuator 1 General Description The AS8525 is a companion IC for automotive battery sensor systems for both low-side and high-side current sensing applications. The device provides two regulated 3.3V supplies from the battery supply, attenuated battery voltage in differential form, and amplified version of a high-side current-sense element’s voltage with a translated common-mode voltage. The device also communicates the system output to a LIN bus. AS8525 is designed in a high-voltage 0.35µm CMOS process and packaged on QFN-32. 2 Key Features Operating voltage 4.3V to 18V, max. 42V for 500 ms Two linear low-drop voltage regulators: VCC = 3.3V with 50mA drive capability Typical 50µA quiescent current in standby mode Typical 35µA quiescent current in sleep mode Precision voltage attenuator with power down facility - 0.05% ratio drift accuracy and disable Precision fully-differential programmable gain amplifier (PGA) - High-voltage to low-voltage common-mode translation - Gain steps 5, 25, 50, 100 LIN bus transceiver - Load independent slew control conforming to LIN 2.1 - Short circuit protection - TX time out fail safe feature - Over temperature warning and shut down Power-On Reset with OTP adjustable reset timeout and brownout detection Over temperature warning & shutdown functions Operating modes: Normal, Standby, Sleep, Temporary shut down Microcontrolle...