The L9911 is a monolithic multifunction alternator voltage regulator intended for use in automotive applications. It features a fully monolithic design, high side field driver, thermal protection, field short circuit protection, protected diagnostic lamp driver, protected high side relay driver, complex diagnostics, and load response control.
The L9911 is a fully monolithic multifunction alternator voltage regulator intended for use in automotive applications. It integrates the control section, field power stage, fault diagnostic circuit, and protection against short circuits. The device features a high-side field driver, thermal protection, and protected diagnostic and relay drivers.
The regulator performs voltage regulation, protection against short circuits of drivers and field, thermal shutdown, and overvoltage protection. It includes complex diagnostics for phase and F+ status, load response control for soft start and attack characteristics, and a field monitor (DFM) output. The device operates with a supply voltage range of 7V to 18V and includes various package options such as Multiwatt8.
| Operating supply voltage | 7 to 18 V |
|---|---|
| Junction temperature range | -40 to 150 °C |
The operating supply voltage ranges from 7V to 18V.
Yes, it includes protection against short circuits of the lamp and relay power drivers and the field power driver.
The junction temperature range is from -40°C to 150°C.