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Ordering number : ENA0927
Monolithic Digital IC
LB1838JM
Overview
Low-Saturation Bidirectional Motor Driver for Low-Voltage Drive
The LB1838JM is a low-saturation two-channel bidirectional motor driver IC for use in low-voltage applications. It has a wide operating temperature range of -40 to 80C and is ideal for 2-phase excitation bipolar stepping motor driver IC used in automotive components (other than critical safety parts), consumer and industrial products, and many other applications.
Features
* Low voltage operation (2.5V min) * Low saturation voltage (upper transistor + lower transistor residual voltage ; 0.40V typ at 400mA). * 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)
Specifications
Absolute Maximum Ratings at Ta = 25C
Parameter Maximum supply voltage Symbol VCC max VS max Output supply voltage Input supply voltage GNP pin flow-out current Allowable power dissipation VOUT VIN IGND Pd max1 Pd max2 Operating temperature Storage temperature
3
Conditions
Ratings -0.3 to +10.5 -0.3 to +10.5 VS to VSF -0.3 to +10
Unit V V V V A mW mW C C
Per channel Independent IC * Mounted on a board.
1.0 550 800 -40 to +85 -55 to +150
Topr Tstg
* Mounted on a substrate : 30x30x1.5mm , glass epoxy board.
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, AV equipment, communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. If you should intend to use our products for applications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our customer shall be solely responsible for the use. Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer's products or equipment.
91207 MS PC 20070831-S00003 No.A0927-1/5
LB1838JM
Allowable Operating Ranges at Ta = 25C
Parameter Supply voltage Symbol VCC VS Input high-level voltage Input low-level voltage VIH VIL Conditions Ratings 2.5 to 9.0 1.8 to 9.0 1.8 to 9.0 -0.3 to +0.7 Unit V V V V
Electrical Characteristics at Ta = 25C, VCC = 3V
Parameter Supply current Symbol ICC0 ICC1 Output saturation voltage VOUT1 VOUT2 Input current IIN IENA Output sustaining voltage Spark killer diode Reverse current Forward voltage IS (leak) VSF VCC1, VS = 7V IOUT = 400mA 30 1.7 A V VO (SUS) Conditions min EMA1, 2 = 0V, VIN1 = 3V or 0V EMA1 = 3V, VIN1 = 3V or 0V EMA1 = 3V, VIN1 = 3V or 0V, IOUT = 200mA EMA1 = 3V, VIN1 = 3V or 0V, IOUT = 400mA VCC = 6V, VIN = 6V VCC = 6V, ENA = 6V IOUT = 400mA 9 Ratings typ 0.1 12 0.20 0.40 max 10 18 0.28 0.60 200 200 A mA V V A A V Unit
Package Dimensions
unit : mm (typ) 3111A
Allowable power dissipation, Pd max - mW
1000
Pd max -- Ta
Mounted on a board : 30.0x30.0x1.5mm3 glass epoxy Mounted on a board
8.0 14 8
800
4.4 6.4
1.7MAX
1 (1.0) 1.0 0.35
7
0.15
0.63
600 550
Independent IC
416 286
400
0.1 (1.5)
200
SANYO : MFP14S(225mil)
0 - 40
- 20
0
2025
40
60
8085
100
Ambient temperature, Ta - C
Pin Assignment
OUT3 OUT4 ENA2 Vcont
8 7
GND
VS2
14
13
12
11
10
LB1838JM
1 2 3 4 5 6 Top view
OUT1
OUT2
IN2
9
Note) Ground both GND pins.
No.A0927-2/5
ENA1
GND
VCC
VS1
IN1
LB1838JM
Block Diagram
VCC
VS2
VS1
10F
60k IN1 80k
Control
OUT1
Stepping Motor
ENA1
60k 80k
OUT2
Thermal shutdown
60k IN2 80k
Control
OUT3
ENA2
60k 80k GND
OUT4
GND
Vcont
* : As long as the voltages applied to VCC, VS1, VS2, ENA1, ENA2, IN1 and IN2 are within the limits set by the absolute maximum ratings, there are no restrictions on the relationship of each voltage level in comparison with the others (regarding which is higher or lower). (ex. VCC = 3V, VS1, 2 = 2V, ENA = IN = 5V)
Truth Table
IN1/2 L H L H ENA1/2 H H L L OUT1/3 H L OFF OFF OUT2/4 L H OFF OFF Mode Forward Reverse Standby Standby
No.A0927-3/5
LB1838JM
Vcont pin
VCC VS
OUT M 300 ID VZ OUT
ID = VZ r (= constant)
IN
Vcont
As shown in the above diagram, the Vcont pin outputs the voltage of the band gap Zener VZ + VF (=1.93V). In normal use, this pin is left open. The drive current ID is varied by the Vcont voltage. However, because the band gap Zener is shared, it functions as a bridge.
1.0
VO(sat) - IO
200
IIN - VIN
VCC = VS = 3V
A EN ) V =3 A N
Output saturation voltage, VO (sat) - V
0.8
160
Input current, IIN - A
0.6
120
IN
1(
E
0.4
80
0.2
40
0 0 100 200 300 400 500 600
0 0
1
2
3
4
5
6
7
8
9
10
Output current, IO - mA
0.6
VO(sat) - Ta
Input voltage, VIN - V
20
IS - VS
Output saturation voltage, VO (sat) - V
VCC = VS = IN = 3V VO(sat) = total value
VCC = VIN =3V For 1 channel
0.5 16 0.4
IO
A = 400m
Current drain, IS - mA
60 80 100 120 140
12
0.2
0.3
IO = 200mA
8
0.1
4
0 - 40
- 20
0
20
40
0 0
1
2
3
4
5
6
7
8
9
10
11
12
Ambient temperature, Ta - C
Supply voltage, VS - V
No.A0927-4/5
LB1838JM
10
ICC - VCC
VCC = VIN =3V For 1 channel
Current drain, ICC - mA
8
6
Rev
4
erse
Forward
2
0 0 1 2 3 4 5 6 7 8 9 10 11 12
Supply voltage, VCC - V
SANYO Semiconductor Co.,Ltd. assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein. SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO Semiconductor Co.,Ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require the export license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written consent of SANYO Semiconductor Co.,Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO Semiconductor Co.,Ltd. product that you intend to use. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. Upon using the technical information or products described herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above.
This catalog provides information as of September, 2007.Specifications and information herein are subject catalog provides information as of January, 2007. Specifications and information herein are to change without notice. PS No.A0927-5/5

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