LB1838M_09

Ordering number : EN3949E Monolithic Digital IC LB1838M Overview Low-Voltage, Low-Saturation Bidirectional Motor Driver 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, cameras and other portable devices. Functions • Low voltage operation (2.5V min) • Low saturation voltage (upper transistor + lower transistor residual voltage: 0.40V at 400mA) • Built-in through-current prevention circuit • Separate logic power supply and motor power supply • Built-in spark killer diodes • Built-in thermal shutdown circuit • Compact package: MFP14S Specifications Parameter Absolute Maximum Ratings at Ta = 25°C Symbol VCC max VS max Output applied voltage Input applied voltage Ground pin flow-out current Allowable power dissipation VOUT VIN IGND Pd max Per channel Independent IC Mounted on a specified board * Operating temperature Storage temperature Topr Tstg Conditions Ratings -0.3 to +10.5 -0.3 to +10.5 VS+VSF -0.3 to +10 1.0 550 800 -20 to +75 -40 to +125 Unit V V V V A mW mW °C °C Maximum supply voltage * Specified board: 20mm × 30mm × 1.6mm, 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. 21209 MS/82599TH(II)/21097HA(II)/O1596HA(II)/4302TS(US) No.3949-1/5 LB1838M Allowable Operating Ranges at Ta = 25°C 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 VV V V V Electrical Characteristics at Ta = 25°C, VCC = 3V Parameter Current drain 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 µA V VO(SUS) Conditions min ENA1,2 = 0V, VIN1 = 3V or 0V ENA1 = 3V, VIN1 = 3V or 0V ENA = 3V, VIN = 3V or 0V, IOUT = 200mA ENA = 3V, VIN = 3V or 0V, IOUT = 400mA VCC = 6V, VIN = 6V VCC = 6V, ENA = 6V IOUT = 400mA 9 Ratings typ 0.1 12 0.2 0.4 max 10 18 0.28 0.6 200 200 µA mA V V µA µA V Unit Package Dimensions unit : mm (typ) 3111A 1000 Pd max -- Ta Specified board: 20×30×1.5mm3 glass epoxy board. With specified board 8.0 14 8 Allowable power dissipation, Pd max -- mW 800 4.4 6.4 0.63 600 550 Independent IC 480 1.7MAX 1 (1.0) 1.0 0.35 7 0.15 400 330 200 SANYO : MFP14S(225mil) 0.1 (1.5) 0 -20 0 20 40 60 80 100 Ambient temperature, Ta -- °C Pin Assignment GND ENA2 OUT3 VS2 14 13 12 11 OUT4 IN2 10 9 Vcont 8 LB1838M 1 2 3 4 5 6 IN1 7 GND VCC ENA1 OUT1 VS1 OUT2 Note: Both GND pins should be connected to ground. No.3949-2/5 LB1838M Block Diagram 10µF VCC VS2 VS1 IN1 Control block 60kΩ 80kΩ OUT1 Stepping Motor OUT2 ENA1 60kΩ 80kΩ Thermal shutdown IN2 Control block 60kΩ 80kΩ OUT3 OUT4 ENA2 60kΩ 80kΩ GND Vcont GND Note: 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 Vcont pin VCC VS OUT M 300Ω ID VZ OUT As shown in the left 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. VZ ( = Constant) r IN ID = Vcont No.3949-3/5 LB1838M 1.0 VO(sat) -- IO 200 IIN -- VIN VCC = VS = 3V Output saturation voltage, VO(sat) -- V 0.8 160 Input current, IIN -- µA 0.6 120 IN 1( A EN ) V =3 A EN 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 0.5 VCC = VIN = 3V For 1channel 0.4 Current drain, IS -- mA 00m IO= 4 A 16 12 0.3 0.2 I O = 200m A 8 0.1 4 0 -40 -20 0 20 40 60 80 100 120 140 00 1 2 3 4 5 6 7 8 9 10 11 12 Ambient temperature, Ta -- °C 10 ICC -- VCC VCC = VIN = 3V For 1channel Supply voltage, VS -- V 8 Current drain, ICC -- mA 6 Rev 4 erse Forward 2 0 0 1 2 3 4 5 6 7 8 9 10 11 12 Supply voltage, VCC -- V No.3949-4/5 LB1838M 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 July, 2008. Specifications and information herein are subject to change without notice. PS No.3949-5/5