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Technical Data
MC34921 Rev 5.
0, 07/2005
Configurable Motor Driver IC with Power Supplies
The 34921 power IC integrates multiple motor drivers, multiple power
regulators, and most other analog functions a small consumer motion-enabled product needs.
The 34921’s circuitry is fully protected with current limiting, short-circuit shutdown, over-temperature, overvoltage, and under-voltage detection.
Supervisory functions can be read and programmed through a 8-MHz Serial Interface.
A 5.
0 V dual-mode (linear or switching) voltage
regulator, 3.
3 V switching buck
regulator, and a voltage-selectable (1.
5 V, 1.
8 V, 2.
5 V) linear
regulator provide power mana...