UMD9124中文资料DC TAIL ROTOR MOTOR, STEERING GEAR MOTOR DRIVE CIRCUIT数据手册UTC规格书

描述 Description

UTC UMD9124 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 andNMOS 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 VCC is 4V.UTC UMD9124 has on-chip temperature protection function. When load motor with low internal resistance is in locked rotor, UTC UMD9124 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 UMD9124, 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.

特性 Features

Low standby current (0.1μA typ.) PMOS and NMOS power transistors with low output resistanceIf IO is 100mA, RON of power transistor is 1.5ΩIf IO is 200mA, RON of power transistor is 1.6ΩIf IO is 300mA, RON of power transistor is 1.7Ω Built-in Subsequent stream diode—No external diode required Low input currentPull-down resistance is 1.8MΩ typical1.6μA input current when input voltage is 3V On-chip thermal shut down (TSD) with hysteresis