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                  Home > Motor Controller IC
                  UMD9114 Datasheet
                   

                  DC TAIL ROTOR MOTOR, STEERING GEAR MOTOR DRIVE CIRCUIT

                   

                   

                  DESCRIPTION

                   

                  UTC UMD9114 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 from 2.5V to 5V. 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.

                   

                  FEATURES

                   

                  * Low standby current (0.1μA typ.)

                  * PMOS and NMOS power transistors with low output resistance

                  If IO is 100mA, RON of power transistor is 1.5Ω

                  If IO is 200mA, RON of power transistor is 1.6Ω

                  If IO is 300mA, RON of power transistor is 1.7Ω

                  * Built-in Subsequent stream diode No external diode required

                  * Low input current Pull-down resistance is 1.8MΩ typical 2.0uA input current when input voltage is 3V

                  * On-chip thermal shut down (TSD) with hysteresis

                  * ESD rate: 2.5KV(HBM)

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