The L99MM70XP is a microcontroller driven multifunctional system ASSP dedicated for LIN controlled wing mirror applications. The device contains a voltage regulator to supply the microcontroller and a LIN2.1 physical layer. Up to 3 DC motors and five grounded resistive loads can independently be driven with four (five) half bridges and five high-side driver. The EC-glass control block provides overvoltage protection with a fast discharge path versus GND and a negative discharge path for future EC-glass characteristics. The integrated ST SPI controls all operation modes (forward, reverse, brake and high-impedance) and provides all the diagnostic information.
●Key Features
● 5 V low-drop voltage regulator (150 mA max.)
● Embedded LIN transceiver: 2.0/2.1 compliant and SAEJ2602 compatible
● Independent control of mirror adjustment motors
● One full bridge for 3 A load (Ron = 300 mΩ)
● Two (three) half bridges for 0.5 A load (Ron = 1.6 Ω)
● One configurable high-side driver for up to 1.5 A load (Ron = 500 mΩ / 10 Watt bulb control, or 1600 mΩ / LED control)
● Two high-side driver for 0.5 A load (Ron = 1600 mΩ)
● One low-side driver 0.5 A load (Ron = 1600 mΩ) used as half bridge with high-side driver for independent mirror axis control
● One high-side driver for 6 A load (Ron = 90 mΩ)
● One high-side driver for 0.5 A load (Ron = 1600 mΩ) to supply an external MOSFET to drive an EC-glass
● Integrated EC glass control via an external MOSFET with fast discharge path: EC-glass can be discharged to GND or to -1 V
● Programmable soft start function to drive loads with higher inrush currents (>6 A, >1.5 A)
● Very low current consumption modes
● All outputs short-circuit and overtemperature protected
● Two thermal shutdown thresholds and early temperature warning
● Current monitor output for all high-side drivers
● Open-load diagnostic for all outputs
● Overload diagnostic for all outputs
● 3 PWM control signals for all outputs
● Charge pump output for active reverse polarity protection via an external N-channel MOSFET
● STM standard serial peripheral interface for control and diagnosis
● INH input for external CAN transceiver
