SANYO LB1834M Datasheet
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
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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