View LB1943_291798.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

Ordering number : ENN5806A
Monolithic Digital IC
LB1943
Forward/Reverse Motor Driver with Braking Function
Overview
The LB1943 is a forward/reverse motor driver IC. This IC supports forward, reverse, and braking control from a single input, and the desired output voltage can be set with a resistor. Either full drive or VC drive can be selected from the single input, and the LB1943 can be controlled from a microprocessor.
Package Dimensions
unit: mm 3034A-SIP10
[LB1943]
24.2 3.25
* Single-input control of forward, reverse, and braking operations * Resistor output voltage setup * Either full drive or VC drive can be selected from the single control input. * Can be controlled from a microprocessor. * Built-in motor dash current absorbing device * Built-in reference voltage circuit * Built-in thermal protection circuit
4.9 1.1 min
7.7 max 6.5
Functions
1
0.67 2.54 0.5 1.2
10
0.25 1.5
SANYO: SIP10
Specifications
Absolute Maximum Ratings at Ta = 25C
Parameter Maximum supply voltage Input voltage Output current Allowable power dissipation Operating temperature Storage temperature Symbol VCC max VIN IOUT Pd max Topr Tstg VCC VIN Conditions Ratings 18 -0.3 to +6 1.6 1.2 -25 to +75 -55 to +125 Unit V V A W C C
Allowable Operating Ranges at Ta = 25C
Parameter Supply voltage range Forward-reverse disabled time Symbol VCC1 VCC2 Toff VCC1 VCC2 Conditions Ratings 8 to 18 5 to 18 Over 20 Unit V V s
Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications. SANYO 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 products described or contained herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
73099TH (OT)/22898HA (OT) No. 5806-1/5
LB1943 Electrical Characteristics at Ta = 25C, VCC = 12 V
Parameter Input low-level voltage Input high-level voltage Input mid-level voltage Input impedance Current drain Symbol VINL VINH VINM ZIN ICC VOUT1 Output voltage VOUT2 Output leakage current Saturation voltage (upper) IOL V (sat)11 V (sat)12 V (sat)21 V (sat)22 VREF VREF/IREF TSTD IREF = 0 to -2.0 mA VOUT/VC, VC = 2.5 V, RL = 60 * 1.5 150 RL = 60 , VC = 2.5 V VIN1 = 2.5 V, VIN2 = 0 V RL = 60 , VC = 2.5 V VIN1 = 2.5 V, VIN2 = 5.0 V RL = VCC = 12V, IOUT = 300 mA VCC = 12V, IOUT = 500 mA VCC = 12V, IOUT = 300 mA VCC = 12V, IOUT = 500 mA 6.0 4.4 4.4 Conditions Ratings min 0 4.2 2 75 5.5 4.95 4.95 0.01 1.9 1.9 0.25 0.4 6.35 0.05 1.9 180 10.0 5.4 5.4 1.0 2.2 2.3 0.5 0.65 6.8 0.1 2.4 typ max 1 6.0 3 Unit V V V k mA V V mA V V V V V V/mA x C
Saturation voltage (lower) Reference power supply Reference voltage load characteristics Control-to-output gain TSD operating temperature
Note: Items marked with an asterisk (*) are design target values, and are not tested.
Pin Assignment
Allowable power dissipation, Pd max - W
1.4 1.2 1.0 0.8 0.6 0.4 0 -25
0.6
Pd max - Ta
Tj = 125 C
0
25
50
75
100
Ambient temperature, Ta - C
Truth Table
Input IN1 H M L H M L H M L IN2 H H H M M M L L L Output voltage OUT1 L L L OFF OFF OFF FULL VC x 2 VC x 2 OUT2 FULL VC x 2 VC x 2 OFF OFF OFF L L L Operation Forward (reverse) operation Forward (reverse) operation Forward (reverse) operation Braking Braking Braking Reverse (forward) operation Reverse (forward) operation Reverse (forward) operation
Input levels: VH: Over 4.2 V VM: 2.0 to 3.0 V VL: Under 1.0 V IN1 and IN2 go to 2.5 V when left open. LB1943 operation is equivalent to that of the LB1641.
No. 5806-2/5
LB1943 Pin Functions
Pin No. 1 Symbol GND Pin function * Power system ground. This line is shared with the signal system ground. Equivalent circuit
* Output voltage switching input 3 IN1 * Goes to VM (about 2.5 V) when left open.
* Forward, reverse, or braking control input 4 IN2 * Goes to VM (about 2.5 V) when left open.
6
VC
* Output voltage setting
7
VREF
* Reference voltage output. VREF = 6.35 V
8
VCC1
* Signal system power supply
9
VCC2
* Power system power supply
2 10
OUT1 OUT2
* Outputs that are connected to the motor coils
No. 5806-3/5
LB1943 Internal Equivalent Circuit
Pre-driver
Logic circuit
Peripheral Circuit Example
Motor
Microcontroller control port
Usage Notes 1. The microprocessor output ports are CMOS outputs, and must be used in the high, low, or open states. 2. We recommend using a value of about 60 k for R1 and R2. 3. Voltages applied to the IN1 and IN2 pins must not exceed the range 0 to 6 V. Note that negative voltages can cause the IC to operate incorrectly. Also, do not apply voltages to IN1 or IN2 when the VCC voltage is not applied. 4. To prevent the upper and lower output transistors from both being in the on state at the same time, when switching the IN1 and IN2 values, always hold the input open for a brief period during the transition. We recommend holding the open state for a few tens of microseconds. 5. A capacitor must be inserted between VCC and ground. We recommend that this capacitor have a value of at least 20 F.
No. 5806-4/5
Reference voltage circuit
Thermal protection circuit
LB1943 6. During motor drive, large currents (on the order of several hundred mA) flow in the motor power supply block. Therefore, the printed circuit board layout and interconnections must be designed so that there are no shared devices. 7. If negative voltages are applied to OUT1 and OUT2 and the IC operates incorrectly, insert Schottky diodes between OUT1 and ground and between OUT2 and ground.
Specifications of any and all SANYO 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. SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or 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 products (including technical data, services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be exported without obtaining 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 permission of SANYO Electric 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 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. 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, 1999. Specifications and information herein are subject to change without notice. PS No. 5806-5/5

▲Up To Search▲

Price & Availability of LB1943

	To Download LB1943 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .