UNI SONI C TECHNOLOGI ES CO., LTD

UMD9112

Preliminary

CMOS IC

www.unisonic.com.tw

1 of 7

Copyright © 2018 Unisonic Technologies Co., Ltd

ELECT RI C T OY DC M OT OR

DRI V E CI RCU I T



DESCRI PT I ON

UTC UMD9112 is an integrated circuit driven by a single

channel toy DC motor which is designed for low-voltage operated

system. 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.

UTC UMD9112 has on-chip temperature protection function.

When load motor with low internal resistance is in locked rotor,

UTC UMD9112 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°C) set by internal

temperature protection circuit, the internal circuit will switch off the

on-chip power switching transistor of UTC UMD9112, 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.



FEAT U RES

* H bridge driver of internal PMOS/NMOS power switches

* Can realize 4 functions (forward、backward、standby、brake) of

load motor

* Low output impedance

* Low standby current (typ.0.1

μA)

* Low static operational current (typ.300

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

SOP-8



ORDERI N G I N FORM AT I ON

Ordering Number

Lead Free

Halogen Free

Package

Packing

UMD9112L-S08-R

UMD9112G-S08-R

SOP-8

Tape Reel