The L9949 is a microprocessor controlled power interface for automotive applications. It is realized in multipower BCD60III technology. Up to three DC motors and one grounded resistive load can be driven with its three half bridges, one full bridge and one highside driver power outputs. The integrated standard serial peripheral interface (SPI) controls all operation modes (forward, reverse, brake and high impedance).
The L9949 is a microprocessor-controlled power interface designed for automotive applications, utilizing multipower BCDE60III technology. It drives up to three DC motors and one grounded resistive load using three half bridges, one full bridge, and one high-side driver power outputs. The device is controlled via an integrated standard serial peripheral interface (SPI) and includes comprehensive diagnostic functions such as overcurrent, open load, and temperature monitoring.
| Full Bridge Load Current | 6A |
|---|---|
| Half Bridge Load Current | 1.6A |
| Highside Driver Load Current | 6A |
| Operating Junction Temperature | -40 to 150 °C |
| Thermal Shutdown Threshold | 180 °C |
| ESD Protection (All pins) | +2(1) kV |
The L9949 is realized in multipower BCDE60III technology.
The maximum supply voltage for the full bridge is 28V DC.
No, external free-wheeling diodes are not needed for inductive loads on outputs OUT1 to OUT5 due to built-in reverse diodes.