Low-Saturation Bidirectional Motor Drive
for Low-Voltage Applications
Overview
The LB1638, 1638M are low-saturation bidirectional motor
driver ICs for use in low-voltage applications. At an I
O
of
500 mA, they have a low saturation output of V
O
(sat) =
0.75 V. They are especially suited for use in compact motor of
portable equipment.
Features
.
Low voltage operation (2.5 V min.)
.
Low saturation voltage (upper transistor + lower transistor
residual voltage; at I
O
= 500 mA, V
O
(sat) = 0.75 V typ.)
.
Low current drain at standby mode (I
CCO
= 0.1 A typ. or
less)
.
Separate logic power supply and motor power supply
.
Brake function
.
Built-in spark killer diodes
.
Compact package (MFP-10S) suited for surface mounting.
Package Dimensions
unit : mm
3098B-DIP10S
[LB1638]
SANYO : DIP10S
unit : mm
3086A-MFP10S
[LB1638M]
SANYO : MFP10S
Ordering number: EN3515A
Monolithic Digital IC
LB1638, 1638M
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
73096HA(II)/7190TA(GTPS) No.3515-1/4
Specifications
Absolute Maximum Ratings
at Ta = 25 C
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
V
CC
max
0.3 to +10.5
V
V
S
max
0.3 to +10.5
V
Output applied voltage
V
OUT
0.3 to V
S
+ VF
V
Input applied voltage
V
IN
0.3 to +10.0
V
Ground pin flow-out current
I
GND
1.0
A
Allowable power dissipation
Pd max
LB1638
1.0
W
LB1638M: Independent IC
440
mW
LB1638M: *With board
550
mW
Operating temperature
Topr
20 to +75
C
Storage temperature
Tstg
40 to +125
C
* Specified board (30
30
1.5 mm
3
glass epoxy)
Allowable Operating Ranges
at Ta = 25 C
Parameter
Symbol
Conditions
Ratings
Unit
Supply voltage range
V
CC
2.5 to 9.0
V
V
S
2.2 to 9.0
V
Input high-level voltage
V
IH
2.0 to 9.0
V
Input low-level voltage
V
IL
0.3 to +0.7
V
Electrical Characteristics
at Ta = 25 C, V
CC
= V
S
= 3 V
Parameter
Symbol
Conditions
min
typ
max
Unit
Current drain
I
CC
0
V
IN
1, 2
I
CC
+ I
S
10
A
I
CC
1
V
IN
1 = 3 V, V
IN
2 = 0 V
I
CC
+ I
S
20
mA
I
CC
2
V
IN
1, 2 = 3 V
I
CC
+ I
S
40
mA
Output saturation voltage
(upper + lower)
V
OUT
1
I
OUT
= 200 mA
0.25
0.5
V
V
OUT
2
I
OUT
= 500 mA
0.70
1.3
V
Output pin voltage difference
I
O
= 200 mA
0.1
V
Output sustain voltage
V
O
(sus)
I
OUT
= 500 mA
9
V
Input current
I
IN
V
IN
= 7 V, V
CC
= 7 V
0.5
mA
[Spark killer diode]
Reverse current
I
S
(leak)
V
CC
, V
S
= 7 V
10
A
Forward voltage
V
SF
I
OUT
= 200 mA
1.7
V
Pin Assignment
Top view
Note: both ground pins must be grounded.
LB1638, 1638M
No.3515-2/4
Truth Table
IN 1
IN 2
OUT 1
OUT 2
Mode
H
L
H
L
Forward
L
H
L
H
Reverse
H
H
L
L
Brake
L
L
OFF
OFF
Standby
Sample Application Circuit
Controller
Note: When using the same power
supply for V
S
and V
CC
, short the
V
CC
and V
S
pins to each other or
insert a capacitor in the V
CC
line.
Output current, I
O
- A
Reverse
current,
I
S
-m
A
Brake
Forward / Reverse
Power supply voltage, V
S
- V
Output
saturation
voltage,
V
O
(sat)
-
V
LB1638, 1638M
No.3515-3/4
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 loss.
Anyone purchasing any products described or contained herein for an above-mentioned use shall:
1
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:
2
Not impose any responsibility 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 July, 1996. Specifications and information herein are subject to change without notice.
Input
current,
I
IN
-
A
Input voltage, V
IN
- V
Current
drain,
I
CC
-A
Brake
Forward / Reverse
Supply voltage, V
CC
- V
Glass epoxy resin
Independent IC
Ambient temperature, Ta - C
Allowable
power
dissipation,
Pd
-
m
W
LB1638, 1638M
No.3515-4/4
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