ST L9916BDTR

The L9916 is a smart alternator voltage regulator intended to be used in automotive application for both 12 V and 24 V systems. The presence of OTP cells for parameters programmability makes it suitable for a wide range of charging application. The L9916 is an alternator voltage regulator with high side power output for field driving. It can be used in both 12 V and 24 V system. It supplies a current through a power high side MOSFET to the excitation coil of the alternator and provides an internal freewheeling diode. The L9916 is suitable for multi-phase-current alternators and its target function is to keep the battery at its nominal value, whatever the vehicle demand is. The set point control is achieved using an internal voltage reference thermally compensated. Continuous feedback to the ECU is provided through the field monitor output. Slew rate control and fitering of the interface lines provide electromagnetic compatibility.

• AEC-Q100 qualified
• Fully monolithic design
• High side field driver
• Self-start function