DESCRIPTION

UTC UMD9111 is an integrated brush DC motor drive solution
for battery-powered toys, low-voltage or battery-powered motion
control applications. It has H bridge driver and uses the PMOS and
NMOS power transistors with low output resistance. 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 circuit has a wide working
voltage range, the maximum continuous output current reaches
0.8A, and the maximum peak output current reaches 1.5A.
UTC UMD9111 has on-chip temperature protection function.
When load motor with low internal resistance is in locked rotor,
UTC UMD9111 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 150 ) set by internal ℃
temperature protection circuit, the internal circuit will switch off the
on-chip power switching transistor of UTC UMD9111, and switch
off load current, preventing potential safety hazards such as
fuming, igniting, etc. Of plastic package caused by over
temperature .Only after having confirmed that the circuit has
returned to safety temperature, can the on-chip temperature
hysteresis circuit be allowed to re-control the circuit.

FEATURES

* H bridge driver of internal PMOS/NMOS power switches
* Built-in anti-common state conduction circuit.
* Low output impedance
* Low standby current (typ.0.1uA)
* Low static operational current
* On-chip thermal shut down (TSD) with hysteresis