The ATA6824 is designed for DC motor control application in automotive high temperature
environment like in mechatronic assemblies in the vicinity of the hot engine, e.g.
turbo charger. With a maximum junction temperature of 200°C, ATA6824 is suitable
for applications with an ambient temperature up to 150°C.
The IC includes 4 driver stages to control 4 external power MOSFETs. An external
microcontroller provides the direction signal and the PWM frequency. In PWM operation,
the high-side switches are permanently on while the low-side switches are
activated by the PWM frequency. ATA6824 contains a voltage regulator to supply the
microcontroller; via the input pin VMODE the output voltage can be set to 5V or 3.3V
respectively.
The on-chip window watchdog timer provides a pin-programmable time window. The
watchdog is internally trimmed to an accuracy of 10% SPI with a maximum data rate
of 20 kBaud.