Ordering number:ENN6195A
Monolithic Digital IC
LB1934T
3V Camera 1.5-Channel Driver
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.
Using direct microcontroller drive, it is possible to control
standby, forward rotation, reverse rotation, and braking of
two motors for film rewind and lens drive by means of only
three control signals. The 0.5-channel section of the 1.5-
channel bridge can be divided into sink/source output, al-
lowing configurations such as 1-channel bridge + sink out-
put + source output.
Package Dimensions
unit:mm
3246-TSSOP20
[LB1934T]
20
11
0.5
4.4
6.4
0.08
(1.0)
1.2max
6.5
Features
鈥?Low voltage drive possible.
When using same power supply for V
CC
and V
S
:
V
CC
=V
S
=1.4V min.
When using separate power supply for V
CC
and V
S
:
V
S
=1.0V min., V
CC
=1.4V min.
鈥?Low saturation voltage : residual voltage (upper side tran-
sistor + lower side transistor) =0.5V typ. at Io=1A.
鈥?Zero power dissipation in standby mode.
鈥?Direct microcontroller drive possible (any strength rela-
tionships of voltage supported between microcontroller
control signal and V
CC
or V
S
).
鈥?Logic power supply and motor power supply can be sup-
plied at separate pins.
鈥?Built-in thermal protection circuit.
鈥?Number of control signals can be optimized for the set.
鈥?-motor control鈥?or 鈥?-motor + 2-load control鈥?can be
implemented by 3 control signals.
In addition to the above, 4 control signals allow
implemention of a 鈥渋nput ignore mode鈥?where two con-
trol signals are used in conjunction with other IC input
signals.
鈥?Built-in spark killer diode.
鈥?Compact, low-profile package (TSSOP-20 ; thickness=1.1
mm typ.)
0.65
(0.33)
1
0.22
10
0.15
SANYO : TSSOP20
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft鈥檚
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
12502TN (KT)/62599RM (KI) No.6195鈥?/6
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