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LB1834M
Ordering number : EN3517A
Low-Saturation Bidirectional Motor Driver
for Low-Voltage Applications
Monolithic Digital IC
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
O2097HA (KT)/9260JK No.3517-1/3
Overview
The LB1834M is a low-saturation bidirectional motor
driver IC (with brake function) for use in low-voltage
applications. It is especially suited for use in portable
equipment such as VCR, camera, radio cassette recorder.
Features
• 2 motors drivable due to on-chip 1.5ch bridge driver of
IO=1.0A drive current.
• Capable of being operated from low voltage (2.5V min).
• Low saturation voltage.
• Low current dissipation at standby mode.
• Logic power supply and motor power supply are separate.
• Brake function (Pins OUT1, OUT2 provide BS terminal
for forced brake by external transistors).
• On-chip spark killer diodes.
• Compact package (MFP-16FS).
Package Dimensions
unit: mm
3097-MFP16FS
[LB1834M]
SANYO : MFP16FS
Specifications
Absolute Maximum Ratings
at Ta=25°C
Parameter Symbol Conditions Ratings Unit
Maximum supply voltage V
CC/VS
max –0.3 to +8.0 V
Output supply voltage V
OUT
–0.3 to VS+V
SF
V
Input supply voltage V
IN
–0.3 to +8.0 V
GND pin flow-out current I
GND
2A
Allowable power dissipation Pd 1 IC only 900 mW
Pd 2 Mounted on specified board 1350 mW
(40
×30×1.5mm3glass epoxy)
Operating temperature Topr –20 to +75 °C
Storage temperature Tstg –40 to +125 °C
Allowable Operating Condition at Ta=25°C
Parameter Symbol Conditions Ratings Unit
Supply voltage V
CC
2.5 to 7.0 V
V
S
2.2 to 7.0 V
Input high level voltage V
IH
2.0 to 7.0 V
Input low level voltage V
IL
–0.3 to +0.7 V
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Electrical Characteristics at Ta=25°C, V
CC=VS
=3V
Parameter Symbol Conditions
Ratings
min typ max
Unit
Supply current I
CC
0 Standby ICC+I
S
0.1 10 µA
I
CC
1 Forward/reverse ICC+I
S
30 40 mA
I
CC
2 Brake ICC+I
S
30 45 mA
Output saturation voltage V
O
(sat) I
OUT
=500mA 0.45 0.7 V
(upper+lower)
(each channel) V
O
(sat) I
OUT
=1A (VCC=VS=3.5V) 0.95 1.4 V
Output supply voltage variation I
O
=500mA –20 0 +20 %
Output sustain voltage V
O
(sus) I
OUT
=1A 9 V
Input current I
IN
VIN=2V, VCC=7V 100 µA
[Spark killer diode]
Reverse current I
S
(leak) VCC, VS=7V 10 µA
Forward current V
SF
I
OUT
=1A 1.7 V
Block Diagram
LB1634M
No.3517-2/3
Input
MI 0 MI 1 MI 1 OUT 1 OUT 2 OUT 3 BS 1/2
L L L
H L L
L H L H L
L L H L H
L H H L L H
H H L L H
H L H H L
H H H L L
Output
Mode
Standby
ch1
Forward
Reverse
Brake
ch2
Forward
Reverse
Brake
Note) Use one of th FRAME-GND pins for grounding. When the
Cu-foild side is soldered, heat radiation can be more
improved.
Bland : OFF
Truth Table
Controller
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LB1634M
No.3517-3/3
Pin Assignment
Ambient temperature, Ta – °C
Allowable power dissipation, Pd max – W
No products described or contained herein are intended for use in surgical implants, life-support systems,
aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and
the like, the failure of which may directly or indirectly cause injury, death or property lose.
Anyone purchasing any products described or contained herein for an above-mentioned use shall:
Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates,
subsidiaries and distributors and all their officers and employees, jointly and severally, against any
and all claims and litigation and all damages, cost and expenses associated with such use:
Not impose any responsibilty for any fault or negligence which may be cited in any such claim or
litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of
their officers and employees jointly or severally.
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees
are made or implied regarding its use or any infringements of intellectual property rights or other rights of
third parties.
This catalog provides information as of October, 1997. Specifications and information herein are subject
to change without notice.
Mounted on specified board
(40×30×1.5mm3glass epoxy)
IC only
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