UNI SONI C TECHNOLOGI ES CO., LTD

UMD9114

Preliminary

CMOS IC

www.unisonic.com.tw

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Copyright © 2018 Unisonic Technologies Co., Ltd

QW-R109-043.a

DC T AI L ROT OR M OT OR,

ST EERI N G GEAR M OT OR

DRI V E CI RCU I T



DESCRI PT I ON

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

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.



FEAT U RES

* Low standby current (0.1

μA typ.)

* PMOS and NMOS power transistors with low output resistance

Ω

Ω

Ω

* Built-in Subsequent stream diode

—No external diode required

* Low input current

Pull-down resistance is 1.8M

Ω typical

2.0uA input current when input voltage is 3V

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

* ESD rate: 2.5KV(HBM)

SOT-26

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