DESCRIPTION
UTC Low on-resistance ensures the circuit to consume lower power in operating at a continuous current, and ensures the circuit to operate stably for a long time. The maximum continuous output current reaches 0.5A, and the maximum peak output current can be 0.8A when VDD is 4V. UTC UMD9114 has on-chip temperature protection function. When load motor with low internal resistance is in locked rotor, UTC UMD9114 output current will increase momentarily, power dissipation of the circuit will go up sharply, and the chip temperature will soar. But, when the chip temperature exceeds a maximum temperature point (typically 160°C) set by internal temperature protection circuit, the internal circuit will switch off the on-chip power switching transistor of UTC UMD9114, and switch off load current, preventing potential safety hazards such as fuming, igniting of plastic package caused by over temperature etc. Only after having confirmed that the circuit has returned to safety temperature, the on-chip temperature hysteresis circuit can be allowed to re-control the circuit.
Unisonic Technologies
