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 ' sproductsor 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 equ ipment 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 re liability 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. 30409 ms / 82799rm(ki) no.6193-1/7 lb1945h overview the lb1945h is a pwm current cont rol type stepping motor driver. feature ? pwm current control (external excitation) ? load current digital selection (1-2, w1-2, and 2 phase excitation drives possible) ? built-in upper/lower diode ? simultaneous on prevention function (feed-through current prevention) ? built-in thermal shutdown circuit ? built-in noise canceler specifications absolute maximum ratings at ta = 25 c parameter symbol conditions ratings unit maximum motor supply voltage v bb max 30 v output peak current i o peak t w 20 s 1.0 a output continuous current i o max 0.8 a logic supply voltage v cc max 6.0 v logic input voltage range v in max -0.3 to v cc v emitter output voltage v e max 1.0 v allowable power dissipation pd max mounted on a specified board * 1.9 w operating temperature topr -20 to +90 c storage temperature tstg -55 to +150 c * specified board: 114.3mm 76.1mm 1.6mm, glass epoxy board. monolithic digital ic pwm current control type stepping motor driver orderin g numbe r : en6193b http://semicon.sanyo.com/en/network
lb1945h no.6193-2/7 allowable operating ranges at ta = 25 q c parameter symbol conditions ratings unit motor supply voltage v bb 10 to 28 v logic supply voltage v cc 4.75 to 5.25 v reference voltage v ref 1.5 to 5.0 v electrical characteristics at ta 25 q c, v bb = 24v, v cc = 5v, v ref = 5.0v ratings parameter symbol conditions min typ max unit output block i bb on i 1 = 0.8v, i 2 = 0.8v, enable = 0.8v 0.5 1.0 2.0 ma output stage supply current i bb off enable = 3.2v 0.2 ma v o sat1 i o = +0.5a, sink 0.3 0.5 v v o sat2 i o = +0.8a, sink 0.5 0.7 v v o sat3 i o = -0.5a, source 1.6 1.8 v output saturation voltage v o sat4 i o = -0.8a, source 1.8 2.0 v i o 1(leak) v o = v bb , sink 50 p a output leakage current i o 2(leak) v o = 0v, source -50 p a output sustain voltage v sus l = 3.9mh, i o = 1.0a, design guarantee value * 30 v logic block i cc on i 1 = 0.8v, i 2 = 0.8v, enable = 0.8v 50 70 92 ma logic supply current i cc off enable = 3.2v 7 10 13 ma v ih 3.2 v input voltage v il 0.8 v i ih v ih = 3.2v 35 50 65 p a input current i il v il = 0.8v 7 10 13 p a i 1 = 0.8v, i 2 = 0.8v 9.5 10 10.5 i 1 = 3.2v, i 2 = 0.8v 13.5 15 16.5 set current control threshold value vref/vsen i 1 = 0.8v, i 2 = 3.2v 25.5 30 34.5 reference current iref vref = 5.0v, i 1 = 0.8v, i 2 = 0.8v 17.5 25 32.5 p a cr pin current i cr cr = 1.0v -1.0 ma thermal shutdown temperature t-tsd design guarantee value * 170 q c temperature hysteresis width ts hys 40 q c * design guarantee value, do not measurement.
lb1945h no.6193-3/7 package dimensions unit : mm (typ) 3233b pin assignment 24 23 22 21 15 16 17 18 19 20 1 out a 2 out a 3 nc 4 nc 5 e1 6 d-gnd 7 v bb 1 8 14 13 12 11 10 9 out b nc nc v bb 2 e2 d-gnd v cc phase1 enable1 i a 2 i a 1 v ref 1 gnd 28 27 26 25 cr phase2 enable2 i b 2 i b 1 v ref 2 s-gnd out b lb1945h sanyo : hsop28h(375mil) 15.2 (6.2) 0.3 7.9 (4.9) 10.5 2.7 0.8 2.0 (0.8) 1 14 15 28 0.65 0.25 2.45max 0.1 (2.25) heat spreader -20 0 20 40 60 80 100 0 2.4 1.6 1.2 0.8 0.4 pd max -- ta 2.0 1.9 0.91 90 ambient temperature, ta -- c allowable power dissipation, pd max -- w specified board: 114.3 76.1 1.6mm 3 glass epoxy board.
lb1945h no.6193-4/7 block diagram out a out a out b out b v bb 1 phase1 enable1 i a 1 i a 2 v ref 1 gnd phase2 enable2 i b 1 i b 2 v ref 2 v cc e1 e2 v bb 2 d-gnd d-gnd 9 10 12 11 13 14 s-gnd 5 6 22 23 15 16 18 17 19 20 8 24 27 28 7 2 1 osc cr 21 control logic ciruit control logic ciruit thermal shutdown circuit current select circuit current select circuit blanking time blanking time
lb1945h no.6193-5/7 truth table enable phase out a out a l h h l l l l h h off off i 1 i 2 output current l l vref / (10 u re) = i out h l vref / (15 u re) = i out u 2/3 l h vref / (30 u re) = i out u 1/3 h h 0 note: output is off when enable = h or when i 1 = i 2 = h. pin function pin no. pin name function 7 v bb 1 output stage power supply voltage pin. 24 v bb 2 cathode pin for the upper-side diodes. 5 23 e1 e2 insert resistor re between these pins and ground to control set current. 2 1 27 28 out a out a out b out b output pins. 14 gnd ground pin. 15 s-gnd sense ground pin. 6 22 d-gnd d-gnd lower-side internal diode ground (anode). 21 cr triangular wave chopping with cr constant setting. triangular wave off time is noise cancel time. 13 16 v ref 1 v ref 2 output current setting pins. (output current is set by inputting a 1.5v to 7.5v voltage.) 9 20 phase1 phase2 output phase select input pin. high input: out a = h, out a = l low input: out a = l, out a = h 10 19 enable1 enable2 output on/off setting input pins. high input: output off low input: output on 12,11 17,18 i a 1,i a 2 i b 1,i b 2 output current setting digital input pins. current is set to 1/3, 2/3, 1 by high and low combinations. 8 v cc logic block power supply voltage pin.
lb1945h no.6193-6/7 application circuit example 24 23 22 21 15 16 17 18 19 20 1 2 out a 3 nc 4nc 5 e1 6 d-gnd 7v bb 1 8 14 13 12 11 10 9 out b nc nc v bb 2 e2 d-gnd v cc phase1 enable1 i a2 i a 1 v ref 1 gnd 28 27 26 25 cr phase2 enable2 i b 2 i b 1 v ref 2 s-gnd out b lb1945h out a 0.51 ? (1w) 24v 47 f 5v 10 f 0.1 f l 820pf 0.51 ? (1w) 82k ? l logic input logic input voltage from 1.5 to 5v can be applied. the fin on the bottom of hsop-28h package and the fins between pins 7 and 8 and 21 and 22 should be grounded.
lb1945h ps no.6193-7/7 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 probabi lity. 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 descri bed 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 conc erned 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. usage notes 1. vref pin because the vref pin is used as refe rence voltage input pin for the current setting, care must be taken to prevent noise from affecting the input. 2. gnd pin because this ic switches large currents, the ground pattern must be designed w ith care. the fin on the bottom of the package and the fins between pins 7 and 8 and 21 and 22 should be grounded. low-impedance patterns should be used in blocks where large currents flow, and these blocks should be separated from low-level signal blocks. in particular, the ground of the sense resistor re at pin e should be located close to the ic ground. pattern layout should be designed so that the capacitors between v cc and ground and v bb and ground are close to v cc and v bb . this catalog provides information as of march, 2009. specifications and information herein are subject to change without notice.
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