LB1838M

LB1838M_09 SANYO | Alldatasheet

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Specifications of any and all SANYO Semiconductor Co.,L td. 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 'sp r o d u c t so r equipment. 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" (medica l equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, t ransportation 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 har m to human bodies, nor shall they grant any guarantee thereof. If you should intend to use our products for app lications 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 n o consultation or inquiry before the intended use, our customer shall be solely responsible for the use. 21209 MS/82599TH(II)/21097HA(II)/O1596HA(II)/4302TS(US) No.3949-1/5 LB1838M 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, 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 Absolute Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit VCC max -0.3 to +10.5 V Maximum supply voltage VS max -0.3 to +10.5 V Output applied voltage VOUT VS+VSF V Input applied voltage VIN -0.3 to +10 V Ground pin flow-out current I GND Per channel 1.0 A Independent IC 550 mW Allowable power dissipation Pd max Mounted on a specified board * 800 mW Operating temperature Topr -20 to +75 °C Storage temperature Tstg -40 to +125 °C * Specified board: 20mm × 30mm × 1.6mm, glass epoxy board. Monolithic Digital IC Low-Voltage, Low-Saturation Bidirectional Motor Driver

No.3949-2/5 Allowable Operating Ranges at Ta = 25°C Parameter Symbol Conditions Ratings Unit VCC 2.5 to 9.0 VV Supply voltage VS 1.8 to 9.0 V Input high-level voltage VIH 1.8 to 9.0 V Input Low-level voltage VIL -0.3 to +0.7 V Electrical Characteristics at Ta = 25°C, VCC = 3V Ratings Parameter Symbol Conditions min typ max Unit ICC0 ENA1,2 = 0V, V IN1 = 3V or 0V 0.1 10 µA Current drain ICC1 ENA1 = 3V, V IN1 = 3V or 0V 12 18 mA VOUT1 ENA = 3V, V IN = 3V or 0V, IOUT = 200mA 0.2 0.28 V Output saturation voltage VOUT2 ENA = 3V, V IN = 3V or 0V, IOUT = 400mA 0.4 0.6 V IIN V CC = 6V, VIN = 6V 200 µA Input current IENA V CC = 6V, ENA = 6V 200 µA Output sustaining voltage V O(SUS) I OUT = 400mA 9 V Spark killer diode Reverse current IS(leak) V CC1, VS = 7V 30 µA Forward voltage VSF I OUT = 400mA 1.7 V Package Dimensions unit : mm (typ) 3111A Pin Assignment VCC ENA1 OUT1 VS1 OUT2 IN1 GND Vcont 14 13 12 11 10 9 GND ENA2 OUT3 V S2 OUT4 IN2 LB1838M Note: Both GND pins should be connected to ground. SANYO : MFP14S(225mil) 8.0 0.15 (1.0) 1.0 0.35 1.7MAX (1.5)0.1 4.4 0.63 6.4 -20 0 20 40 60 80 1000 1000 800 600 400 200 Pd max -- Ta 550 330 480 Ambient temperature, Ta -- °C Allowable power dissipation, Pd max -- mW Independent IC With specified board Specified board: 20×30×1.5mm3 glass epoxy board.

No.3949-3/5 Vcont IN OUT OUT M ID VZ VCC VS ID = VZ r 300Ω ( = Constant) Block Diagram VCC OUT3 VS1 OUT4 GND Vcont GND ENA2 VS2 IN2 60kΩ 80kΩ 60kΩ 80kΩ OUT1 OUT2 ENA1 IN1 60kΩ 80kΩ 60kΩ 80kΩ Stepping Motor 10µF Control blockControl block Thermal shutdown 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 ENA1,2 OUT1,3 OUT2,4 Mode L H H L Forward H H L H Reverse L L OFF OFF Standby H L OFF OFF Standby Vcont pin 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.

No.3949-4/5 VO(sat) -- IO IIN -- VIN VO(sat) -- Ta I S -- VS ICC -- VCC 1.0 0.8 0.6 0.4 0.2 200 160 120 0.6 0.5 0.3 0.2 0.1 0.4 0 100 200 300 400 500 600 0123456789 1 0 -40 -20 0 20 40 60 140 120100 80 0123 7 6 548 1 2 1110 9 0123 7 6 548 1 21110 9 ENA IN1(ENA = 3V) IO = 400mA IO = 200mA VCC = VS = 3V VCC = VS = IN = 3V VO(sat) = total VCC = VIN = 3V For 1channel VCC = VIN = 3V For 1channel Output current, IO -- mA Output saturation voltage, VO(sat) -- V Input voltage, VIN -- V Input current, IIN -- µA Output saturation voltage, VO(sat) -- V Ambient temperature, Ta -- °C Current drain, IS -- mA Supply voltage, VS -- V Current drain, ICC -- mA Supply voltage, VCC -- V Reverse Forward

PS No.3949-5/5 SANYO Semiconductor Co.,Ltd. assumes no responsib ility for equipment failures that result from using products at values that exceed, even momentarily, rate d values (such as maximum ra tings, operating condition ranges, or other parameters) listed in products specif ications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein. SANYO Semiconductor Co.,Ltd. strives to supply high-qual ity 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 acci dents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause dam age to other property. When designing equipment, adopt safety measures so that these kinds of accidents or e vents cannot occur. Such measures include but are not limited to protective circuits and error prevention c ircuits for safe design, redundant design, and structural design. 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 f or 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. Information (including circuit diagr ams and circuit parameters) herein is for example only; it is not guaranteed for volume production. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equi pment, refer to the "Delivery Specification" for the SANYO Semiconductor Co.,Ltd. product that you intend to use. In the event that any or all SANYO Semiconductor C o.,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 in formation storage or retrieval system, or otherwise, without the prior written consent of SANYO Semiconductor Co.,Ltd. This catalog provides information as of July, 2008. Specifications and informat ion herein are subject to change without notice.