L9911

L9911 Car alternator multifunction smart voltage regulator Datasheet - production data '!0'03 Multiwatt8 Features  Fully monolithic design  High side field driver  Thermal protection  Field short circuit protection  Protected diagnostic lamp driver  Protected high side relay driver  Complex diagnostics  Load response control  DFM output (field monitor)  Self start function Description The L9911 is a monolithic multifunction alternator voltage regulator intended for use in automotive application. It includes the control section, the field power stage, fault diagnostic circuit which drives a warning lamp, and the protection against short circuits Order code L9911F L9911I L9911P L9911V L9911K L9911U Table 1. Device summary Temp. range, °C Package Tj = -40 to +150 Multiwatt8 Packing Tube September 2015 This is information on a product in full production. DocID10990 Rev 13 1/20 www.st.com Contents Contents L9911 1 Circuit operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.1 Voltage regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.2 Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.3 Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.4 Load response control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....