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. 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. 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 new introduction or other application different from current conditions on the usage of automotive device, communication device, office equipment, industrial equipment etc. , please consult with us about usage conditi on (temperature, operation time etc.) 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. 40412 sy 20120321-s00010 no.a2041-1/5 LB1938FA overview the LB1938FA is an h-bridge motor driver that supports low-voltage drive and features low-saturation outputs in an ultraminiature slim package. the LB1938FA provides forward, reverse, brake, and standby modes controlled by two input signals, and is an optimal dc motor driver for noteboo k personal computers, digital cameras, cell phones, and other portable equipment. features ? ultraminiature micro8 package ? the low saturation voltage means that the voltage applied to the motor is higher and ic heat generation is reduced. this allows this ic to be used in environments with higher ambient operating temperatures. output saturation voltage (high side + low side): v o sat = 0.15v typical (i o = 100ma) ? the wide usable voltage range and the low standby mode current drain of 0.1 a make this ic optimal for battery operated equipment. ? there are no constraints on the relationship between the input signal voltage and the supply voltage. for example, this ic can be use at v cc = 3v and v in = 5v. ? thermal protection circuit limits the drive current and prevents the ic from causing a fire or being destroyed if the ic chip temperature reaches or exceeds 18 0c due to large currents flowing when the outputs are shorted due to, for example, motor layer shorting or other phenomena. specifications absolute maximum ratings at ta = 25 c parameter symbol conditions ratings unit supply voltage v cc max 10.5 v output current i out max 800 ma output voltage v out max v cc +v sf v input applied voltage v i h max 10 v continued on next page. ordering number : ena2041 monolithic digital ic 1ch, low-saturation forward/reverse motor driver
LB1938FA no.a2041-2/5 continued from preceding page. parameter symbol conditions ratings unit allowable power dissipation pd max mounted on a specified board * 400 mw operating temperature range topr -30 to +85 c storage temperature range tstg -55 to +150 c note *: mounted on a specified board: 114.3mm 76.1mm 1.5mm, glass epoxy resin, wiring density 20% caution 1) absolute maximum ratings represent the va lue which cannot be exceeded for any length of time. caution 2) even when the device is used within the range of absolu te maximum ratings, as a result of continuous usage under hig h temperature, high current, high voltage, or drastic temperature change, the reli ability of the ic may be degraded. please contact us for the furt her details. allowable operating range at ta = 25 c parameter symbol conditions ratings unit supply voltage v cc 2.2 to 10 v input high-level voltage v i h 2.0 to 9.5 v input low-level voltage v i l -0.3 to +0.3 v electrical characteristics at ta = 25 c, v cc = 3v parameter symbol conditions ratings unit min typ max circuit current i cc 1 standby 0.1 5 a i cc 2 forward/reverse drive 14 19 ma i cc 3 brake 20 29 ma output saturation voltage v o sat1 upper+lower i o = 100ma for forward/reverse rotation 0.15 0.2 v v o sat2 upper+lower i o = 300ma for forward/reverse rotation 0.35 0.5 v v o sat3 upper i o = 100ma for braking 0.1 0.15 v spark killer diode forward voltage v sf i o = 300ma 0.9 1.7 v spark killer diode inverse current i rs v out = 10v 0.1 5 a input current i in v in = 5v 75 98 a thermal protection operating temperature tsd design target value * 180 c note *: design target value: meas urement with a single unit not made. package dimensions unit : mm (typ) 3427 pd max - ta allowable power dissipation, pd max - mw ambient temperature, ta - c mounted on a specified board 114.3mm 76.1mm 1.5 mm, glass epoxy resin 0 700 600 500 400 300 100 200 120 0 -30 60 30 90 208 sanyo : micro8 3.0 0.33 0.18 0.65 4.9 0.08 3.0 0.55 1 8 2 1.1 max
LB1938FA no.a2041-3/5 pin assignment s-gnd: gnd for the control system p-gnd: gnd for the power system truth table in1 in2 out1 out2 mode l l off off standby h l h l forward rotation l h l h reverse rotation h h h h brake sample application circuit cautions: ? v cc and gnd lines suffer substantial fluc tuation in the current quantity, causing a problem of line oscillation in certain cases. in this case, take following points into account: (1) use a thick and short wiring to reduce the wiring inductance. (2) insert a capacitor with satisfact ory frequency charact eristics near ic. (3) connect s-gnd to the control system gnd on the cpu side and p-gnd to the power system gnd. v cc 1 2 3 4 8 7 6 5 in1 in2 s-gnd p-gnd out1 out2 nc top view LB1938FA v cc out1 in1 out2 in2 p-gnd s-gnd m cpu control block 6 7 1 2 3 4 8
LB1938FA no.a2041-4/5 0.1 0.5 0.3 0.4 0.2 500 200 0 300 100 400 v o (sat) - i o output saturation voltage, v o (sat) - v output current, i o - ma 0 v cc = 3v v o (sat) - ta output saturation voltage, v o (sat) - v ambient temperature, ta - c 0 0.1 0.5 0.3 0.4 0.2 140 20 40 -40 -20 60 80 100 0 120 140 20 40 -40 -20 60 80 100 0 120 i o = 300ma i o = 100ma v cc = 3v i cc - tc current drain, i cc - ma case temperature, tc - c 8 4 0 28 20 24 12 16 brake mode v cc = 5v 3v forward or reverse mode, v cc = 5v 3v 10 4 3 06 58 7 2 19 i cc - v cc current drain, i cc - ma supply voltage, v cc - v 0 28 12 16 20 24 8 4 brake mode v cc = v in in1 in2 forward or reverse mode 10 4 3 06 58 7 2 19 i in - v in input voltage, v in - v 0 160 120 80 40 v cc = 3v 140 40 20 -40 60 100 80 0 -20 120 i cc standby mode temperature characteristics case temperature, tc - c 140 40 20 -40 60 100 80 0 -20 120 case temperature, tc - c 0 2.0 1.6 1.2 0.8 0.4 v cc = 11v 0.29 in pin input current temperature characteristics 0 100 80 60 40 20 v in = 5v
LB1938FA no.a2041-5/5 ps this catalog provides information as of april, 2012. specifications and info rmation herein are subject to change without notice. sanyo semiconductor co.,ltd. assumes no responsib ility 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-reliab ility pr oducts, however, any and all semiconductor products fail or malfunction with some probab ility. it is possible that these pr obab ilistic 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 dam age 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. 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. any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. when designing equip ment, 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 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.
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