The alternator control IC TLE8881-2TN is a monolithic full featured regulator specifically designed for closed loop voltage control. It can be used in 12V automotive multi-phase alternators with a rotating field winding. This regulator is able to communicate with an Engine-Management or Energy-Management ECU through a standard LIN interface. The battery voltage is regulated at a precise value between 10.6V and 16V. By using free-adjustable parameters, the regulator is able to operate even without any communication interface.The TLE8881-2TN is fully compliant to various LIN Alternator Regulator specifications (VDA, RSA-Nissan and HKMC).

The device is based on Infineon’s power technology SPT which allows bipolar and CMOS control circuitry to be integrated with DMOS power devices on the same monolithic circuitry.The battery voltage is regulated at a precise value between 10.6 V and 16 V. In case of communication loss, the regulator can proceed with the voltage regulation by using adjustable default values. A fixed frequency PWM voltage is set at an output pin to excite the excitation coil of the alternator.The TLE8881-3 is equipped with special protection circuitry as well as circuitry to control the excitation voltage slew rate to reduce EMI. Therefore, the device meets the specific ESD and EMC requirement of the harsh automotive environment.