Page 1
Ordering number: EN3515A
Monolithic Digital IC
LB1638, 1638M
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
500 mA, they have a low saturation output of V
0.75 V. They are especially suited for use in compact motor of
portable equipment.
O
O
(sat) =
of
Features
.
Low voltage operation (2.5 V min.)
.
Low saturation voltage (upper transistor + lower transistor
residual voltage; at I
.
Low current drain at standby mode (I
less)
.
Separate logic power supply and motor power supply
.
Brake function
.
Built-in spark killer diodes
.
Compact package (MFP-10S) suited for surface mounting.
= 500 mA, VO(sat) = 0.75 V typ.)
O
= 0.1 µA typ. or
CCO
Package Dimensions
unit : mm
3098B-DIP10S
[LB1638]
SANYO : DIP10S
unit : mm
3086A-MFP10S
[LB1638M]
SANYO : MFP10S
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
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LB1638, 1638M
Specifications
Absolute Maximum Ratings atTa=25°C
Parameter Symbol Conditions Ratings Unit
V
max –0.3 to +10.5 V
Maximum supply voltage
Output applied voltage V
Input applied voltage V
Ground pin flow-out current I
Allowable power dissipation Pd max
Operating temperature Topr –20 to +75
Storage temperature Tstg –40 to +125
* Specified board (30 × 30 × 1.5 mm3glass epoxy)
Allowable Operating Ranges atTa=25°C
Parameter Symbol Conditions Ratings Unit
Supply voltage range
Input high-level voltage V
Input low-level voltage V
CC
V
max –0.3 to +10.5 V
S
OUT
GND
V
CC
V
IN
LB1638 1.0 W
LB1638M: Independent IC 440 mW
LB1638M: *With board 550 mW
S
IH
IL
–0.3 to VS+VF V
–0.3 to +10.0 V
2.5 to 9.0 V
2.2 to 9.0 V
2.0 to 9.0 V
–0.3 to +0.7 V
1.0 A
C
°
C
°
Electrical Characteristics atTa=25°C, VCC=VS=3V
Parameter Symbol
0VIN1, 2 ICC+I
I
CC
I
Current drain
Output saturation voltage
(upper + lower)
Output pin voltage difference I
Output sustain voltage V
Input current I
[Spark killer diode]
Reverse current I
Forward voltage V
1VIN1=3V,VIN2=0V ICC+I
CC
I
2VIN1,2=3V ICC+I
CC
V
1I
OUT
V
2I
OUT
(sus) I
O
IN
(leak) VCC,VS=7V 10 µA
S
SF
= 200 mA 0.25 0.5 V
OUT
= 500 mA 0.70 1.3 V
OUT
= 200 mA 0.1 V
O
= 500 mA 9 V
OUT
VIN=7V,VCC= 7 V 0.5 mA
I
= 200 mA 1.7 V
OUT
Conditions
Pin Assignment
min typ max Unit
S
S
S
10 µA
20 mA
40 mA
Top view
Note: both ground pins must be grounded.
No.3515-2/4
Page 3
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
LB1638, 1638M
Controller
Note: When using the same power
supply for V
V
and VSpins to each other or
CC
insert a capacitor in the V
(sat) − V
O
−mA
S
and VCC, short the
S
CC
Brake
line.
Forward / Reverse
Reverse current, I
Output saturation voltage, V
Output current, IO−A
Power supply voltage, V
S
−V
No.3515-3/4
Page 4
LB1638, 1638M
−µA
Input current, I
IN
−A
CC
Brake
Current drain, I
Forward / Reverse
Input voltage, VIN−V
Glass epoxy resin
Independent IC
Supply voltage, V
CC
−V
Allowable power dissipation, Pd − mW
No products described or contained herein areintendedforuse 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
2 Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO
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.
Ambient temperature, Ta −°C
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:
ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally.
This catalog provides information as of July, 1996. Specifications and information herein are subject to change without notice.
No.3515-4/4
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