The L9951 and L9951XP are microcontroller driven, multifunctional rear door actuator drivers for automotive applications. Up to two DC motors and two grounded resistive loads can be driven with three half bridges and two high side drivers. The integrated standard serial peripheral interface (SPI) controls all operation modes (forward, reverse, brake and high impedance). All diagnostic information is available via the SPI.
The L9951 and L9951XP are microcontroller-driven, multifunctional rear door actuator drivers designed for automotive applications. These devices can drive up to two DC motors and two grounded resistive loads using three half bridges and two high-side drivers. Key features include short circuit protection, over-temperature protection, open-load diagnostics, and overload diagnostics for all outputs.
The devices offer programmable PWM control and a programmable softstart function to manage loads with higher inrush currents. They also include a current monitor output for high-side drivers and a charge pump output for reverse polarity protection. Operation is controlled via an integrated standard serial peripheral interface (SPI).
| Output 1 Current | 7.4 A |
|---|---|
| Output 2 Current | 5 A |
| Output 3 Current | 5 A |
| Output 4 Current | 1.25 A |
| Output 5 Current | 1.25 A |
| Standby Current | < 85 µA |
The L9951 is used as a rear door actuator driver with bridges for door lock, safe lock, and two 5W or 10W light bulbs.
The L9951 has five outputs: three half bridges (OUT1, OUT2, OUT3) and two high-side drivers (OUT4, OUT5).