SANYO LB1838M Datasheet
Ordering number: EN3949C
Monolithic Digital IC
LB1838M
Low-saturation, Bidirectional Motor Driver
for Low-voltage Applications
Overview
The LB1838M is a low-saturation two-channel bidirectional
motor driver IC for use in low-voltage applications.
The LB1838M is a bipolar stepper-motor driver IC that is ideal
for use in printers, FDDs, cameras and other portable devices.
Package Dimensions
unit : mm
3111-MFP14S
[LB1838M]
Features
.
Low voltage operation (2.5 V min)
.
Low saturation voltage (upper transistor + lower transistor
residual voltage; 0.40 V at 400 mA).
.
Through-current prevention circuit built in
.
Separate logic power supply and motor power supply
.
Spark killer diodes built in
.
Thermal shutdown circuit built in
.
Compact package (14-pin MFP)
SANYO : MFP14S
Specifications
Absolute Maximum Ratings at Ta = 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 IGND Per channel 1.0 A
Allowable power dissipation
Operating temperature Topr –20 to +75 °C
Storage temperature Tstg –40 to +125 °C
CC
V
max –0.3 to +10.5 V
S
OUT
IN
Pd max1 Independent IC 550 mW
Pd max2 * With board 800 mW
VS+V
SF
–0.3 to +10 V
V
*Note: Mounted on 20 × 30 × 1.5 mm3glass epoxy PCB
Allowable Operating Ranges at Ta = 25°C
Parameter Symbol Conditions Ratings Unit
Supply voltage
Input high-level voltage V
Input low-level voltage V
V
CC
V
S
IH
IL
2.5 to 9.0 V
1.8 to 9.0 V
1.8 to 9.0 V
–0.3 to +0.7 V
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
21097HA(II)/O1596HA(II)/4302TS(US) No.3949-1/4
LB1838M
Electrical Characteristics at Ta = 25°C, VCC=3V
Parameter Symbol Conditions min typ max Unit
Supply current 1 I
Supply current 2 I
Output saturation voltage
Input current 1 I
Input current 2 I
Output sustaining voltage V
Spark killer diode reverse
current
Spark killer diode forward
voltage
Pin Assignment
0 ENA1,2=0V,VIN1=3Vor0V 0.1 10 µA
CC
1 ENA1=3V,VIN1=3Vor0V 12 18 mA
CC
V
1 ENA=3V,VIN=3Vor0V,I
OUT
V
2 ENA=3V,VIN=3Vor0V,I
OUT
IN
ENA
(sus) I
O
Is (leak) V
V
SF
VCC=6V,VIN= 6 V 200 µA
VCC= 6 V, ENA = 6 V 200 µA
= 400 mA 9 V
OUT
1, VS= 7 V 30 µA
CC
I
= 400 mA 1.7 V
OUT
= 200 mA 0.2 0.28 V
OUT
= 400 mA 0.4 0.6 V
OUT
Note: Both GND pins should be connected to ground.
Truth Table
IN 1, 2 ENA 1, 2 OUT 1, 3 OUT 2, 4 Mode
L H H L Forward
H H L H Reverse
L L OFF OFF Standby
H L OFF OFF Standby
No.3949-2/4
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