Overview

The LB1934T is a low-voltage, low-saturation forward/reverse driver IC with built-in 1.5-channel bridge. Its com

pact, low-profile package makes it ideal for use in compact cameras powered by 3V lithium batteries.

Features

• Low voltage drive possible.

  When using same power supply for VCCand VS: VCC=VS=1.4V min.

  When using separate power supply for VCCand VS: VS=1.0V min., VCC=1.4V min.

• Low saturation voltage : residual voltage (upper side transistor + lower side transistor) =0.5V typ. at Io=1A.

• Zero power dissipation in standby mode.

• Direct microcontroller drive possible (any strength relationships of voltage supported between microcontroller

control signal and VCCor VS).

• Logic power supply and motor power supply can be supplied at separate pins.

• Built-in thermal protection circuit.

• Number of control signals can be optimized for the set.

  “2-motor control” or “1-motor + 2-load control” can be implemented by 3 control signals. In addition to the above, 4 control signals allow implemention of a “input ignore mode” where two control signals are used in conjunction with other IC input signals.

• Built-in spark killer diode.

• Compact, low-profile package (TSSOP-20 ; thickness=1.1 mm typ.)