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11707 sy im b8-5416 no.7115-1/16 lb1946 overview the lb1946 is stepping motor drive ic th at implements pwm current control bipolar drive with a fixed off time. this ic features 15-current setting levels using a fixed vref volta ge and supports for microstepping drive from 1-2 phase excitation to 4w1-2 phase excitation drive. this device is optimal for driving stepping motors such as those used for carriage drive and paper feed in printers. applications ? pwm current control stepping motor drivers features ? pwm current control with a fixed off time ? logic input serial-parallel converter (allows 1-2, w1-2, 2w1-2, and 4w1-2 phase excitation drive) ? current attenuation switching function (with sl ow decay, fast decay, and mixed decay modes) ? built-in upper and lower side output diodes ? simultaneous on state prevention function (through current prevention) ? noise canceller function ? thermal shutdown circuit ? shutoff on low logic system voltage circuit ? low-power mode control pin specifications absolute maximum ratings at ta = 25 c parameter symbol conditions ratings unit motor supply voltage vbb 50 v peak output current i o peak tw 20 s 1.75 a maximum continuous output current i o max 1.5 a logic system supply voltage v cc 7.0 v logic input voltage range v in -0.3 to v cc v emitter output voltage ve 1.0 v operating temperature topr -20 to +85 c storage temperature tstg -55 to +150 c allowable power dissipation (ic internal) pd max ta=25 c, independent ic 3.0 w ordering number : en7115 monolithic digital ic pwm current control stepping motor driver any and all sanyo semiconductor 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 semiconductor representative nearest you before using any sanyo semiconductor products described or contained herein in such applications. sanyo semiconductor assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated val ues (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all sanyo semiconductor products described or contained herein.
lb1946 no.7115-2/16 allowable operating ranges at ta = 25 c parameter symbol conditions ratings unit motor supply voltage vbb 10 to 45 v logic supply voltage v cc 4.5 to 5.5 v reference voltage vref 0.0 to 3.0 v electrical characteristics at ta = 25 c, v cc = 5v, vbb = 45v, vres = 1.52v ratings parameter symbol conditions min typ max unit output block ibb on 1.6 2.4 3.5 ma output stage supply current ibb off 1.3 1.9 2.5 ma output saturation voltage 1 v o sat1 i o =+1.0a (sink) 1.2 1.6 v output saturation voltage 2 v o sat2 i o =+1.5 a (sink) 1.5 1.9 v output saturation voltage 3 v o sat3 i o =-1.0 a (source) 1.9 2.2 v output saturation voltage 4 v o sat4 i o =-1.5 a (source) 2.2 2.4 v i o 1 (leak) v o =vbb (sink) 50 a output leakage current i o 2 (leak) v o =0v (source) -50 a output sustain voltage v o sus l=15mh i o =1.5a * 45 v logic block i cc on d0=1,d1=1,d2=1,d3=1 when these data values are set 25.5 37 48.5 ma i cc off1 d0=0,d1=0,d2=0,d3=0 18 26 34 ma logic system supply current i cc off2 st=low 0.01 0.05 0.1 ma v ih 2 v input voltage v il 0.8 v i ih v ih =2v 35 a input current i il v il =0.8v 6 a d0=1,d1=1,d2=1,d3=1 when these data values are set 0.470 0.50 0.525 v d0=1,d1=1,d2=1,d3=0 0.445 0.48 0.505 v d0=1,d1=1,d2=0,d3=1 0.425 0.46 0.485 v d0=1,d1=1,d2=0,d3=0 0.410 0.43 0.465 v d0=1,d1=0,d2=1,d3=1 0.385 0.41 0.435 v d0=1,d1=0,d2=1,d3=0 0.365 0.39 0.415 v d0=1,d1=0,d2=0,d3=1 0.345 0.37 0.385 v d0=1,d1=0,d2=0,d3=0 0.325 0.35 0.365 v d0=0,d1=1,d2=1,d3=1 0.280 0.30 0.325 v d0=0,d1=1,d2=1,d3=0 0.240 0.26 0.285 v d0=0,d1=1,d2=0,d3=1 0.195 0.22 0.235 v d0=0,d1=1,d2=0,d3=0 0.155 0.17 0.190 v d0=0,d1=0,d2=1,d3=1 0.115 0.13 0.145 v sense voltages ve d0=0,d1=0,d2=1,d3=0 0.075 0.09 0.100 v reference current iref vref=1.5v -0.5 a cr pin current icr cr=1.0v -1.7 -1.25 -0.9 ma md pin current imd md=1.0v, cr=4.0v -5.0 a logic system on voltage vlsdon 2.6 2.8 3.0 v logic system off voltage vlsdoff 2.45 2.65 2.85 v lvsd hysteresis vlhis 0.03 0.15 0.35 v thermal shutdown temperature ts 170 c *design guaranteed value
lb1946 no.7115-3/16 ac electrical characteristics at v cc = 5v ratings parameter symbol conditions min typ max unit clock frequency f clk v cc =5.0v 200 550 khz data setup time t ds v cc =5.0v 0.9 2.5 s data hold time t dh v cc =5.0v 0.9 2.5 s minimum clock high-level pulse width t sch v cc =5.0v 0.9 2.5 s minimum clock low-level pulse width t scl v cc =5.0v 0.9 2.5 s set pin stipulated time t lat v cc =5.0v 0.9 2.5 s set pin signal pulse width t latw v cc =5.0v 1.9 5.0 s v cc =3.3v specification absolute maximum ratings parameter symbol conditions ratings unit emitter output voltage ve 0.5 v allowable operating ranges at ta = 25 c parameter symbol conditions ratings unit motor system supply voltage vbb 10 to 45 v logic system supply voltage v cc 3.0 to 3.6 v reference voltage vref 0.0 to 1.0 v electrical characteristics at ta = 25 c, v cc = 3.3v, vbb = 45v, vref = 1.0v ratings parameter symbol conditions min typ max unit output block ibb on 1.6 2.4 3.5 ma output stage supply current ibb off 1.3 1.9 2.5 ma output saturation voltage 1 v o sat1 i o =+1.0a (sink) 1.3 1.7 v output saturation voltage 2 v o sat2 i o =+1.5 a (sink) 1.6 2.0 v output saturation voltage 3 v o sat3 i o =-1.0 a (source) 1.9 2.2 v output saturation voltage 4 v o sat4 i o =-1.5 a (source) 2.2 2.4 v i o 1 (leak) v o =vbb (sink) 50 a output leakage current i o 2 (leak) v o =0v (source) -50 a output sustain voltage v o sus l=15mh i o =-1.5a * 45 v *design guaranteed value continued on next page. clk set d4 d5 d6 d10 d11 t ds t dh t scl t sch t lat f clk t latw data
lb1946 no.7115-4/16 continued from preceding page. ratings parameter symbol conditions min typ max unit logic block i cc on d0=1,d1=1,d2=1,d3=1 when these data values are set 23.5 34 44.5 ma i cc off1 d0=0,d1=0,d2=0,d3=0 16 23 30 ma logic system supply current i cc off2 st=0.8v 0.005 0.03 0.1 ma v ih 2 v input voltage v il 0.8 v i ih v ih =2v 35 a input current i il v il =0.8v 6 a d0=1,d1=1,d2=1,d3=1 when these data values are set 0.303 0.330 0.356 v d0=1,d1=1,d2=1,d3=0 0.290 0.315 0.341 v d0=1,d1=1,d2=0,d3=1 0.276 0.300 0.324 v d0=1,d1=1,d2=0,d3=0 0.263 0.286 0.309 v d0=1,d1=0,d2=1,d3=1 0.250 0.272 0.294 v d0=1,d1=0,d2=1,d3=0 0.236 0.257 0.278 v d0=1,d1=0,d2=0,d3=1 0.223 0.243 0.263 v d0=1,d1=0,d2=0,d3=0 0.209 0.228 0.247 v d0=0,d1=1,d2=1,d3=1 0.183 0.200 0.217 v d0=0,d1=1,d2=1,d3=0 0.155 0.170 0.185 v d0=0,d1=1,d2=0,d3=1 0.128 0.143 0.158 v d0=0,d1=1,d2=0,d3=0 0.102 0.114 0.126 v d0=0,d1=0,d2=1,d3=1 0.074 0.085 0.096 v sense voltages ve d0=0,d1=0,d2=1,d3=0 0.047 0.057 0.067 v reference current iref vref=1.5v -0.5 a cr pin current icr cr=1.0v -0.91 -0.7 -0.49 ma md pin current imd md=1.0v, cr=4.0v -5.0 a logic system on voltage vlsdon 2.6 2.8 3.0 v logic system off voltage vlsdoff 2.45 2.65 2.85 v lvsd hysteresis vlhis 0.03 0.15 0.35 v thermal shutdown temperature ts 170 c ac electrical characteristics at v cc = 3.3v ratings parameter symbol conditions min typ max unit clock frequency f clk v cc =3.3v 200 550 khz data setup time t ds v cc =3.3v 0.9 2.5 s data hold time t dh v cc =3.3v 0.9 2.5 s minimum clock high-level pulse width t sch v cc =3.3v 0.9 2.5 s minimum clock low-level pulse width t scl v cc =3.3v 0.9 2.5 s set pin stipulated time t lat v cc =3.3v 0.9 2.5 s set pin signal pulse width t latw v cc =3.3v 1.9 5.0 s
lb1946 no.7115-5/16 package dimensions unit:mm (typ) 3147c clk set d4 d5 d6 d10 d11 t ds t dh t scl t sch t lat f clk t latw data sanyo : dip28h(500mil) 1 14 28 15 0.4 0.6 4.04.0 26.75 20.0 r1.7 8.4 (1.81) 1.78 1.0 12.7 11.2 0 ilb01479 --20 4.0 3.0 2.0 1.0 20 0 40 60 80 100 ambient temperature, ta - c allowable power dissipation, pd max - w pd max - ta independent ic
lb1946 no.7115-6/16 block diagram md control logic circuit vbb outb outa outb- outa- cr1 gnd e1 e2 cr2 vref1 vref2 clk data set st v cc + - + - current selection circuit one-shot multi-vibrator blanking time thermal shutdown circuit serial-parallel conversion circuit one-shot multi-vibrator blanking time control logic circuit current selection circuit
lb1946 no.7115-7/16 pin assignment timing chart 27 28 25 26 23 24 18 19 20 21 22 15 16 17 11 8 9 10 14 13 12 6 7 4 5 1 2 3 outb- outb e1 e2 nc nc nc nc nc vbb gnd vref2 nc cr2 nc st set data clk v cc vref1 nc cr1 md outa- out a nc vbb lb1946 top view clock data set d0 d1 d2 d3 d4 d5 d6 d7 d8 d9 d10 d11 1 s 1 s
lb1946 no.7115-8/16 serial transmission data definitions ia4 ia3 ia2 ia1 de1 ph1 ib4 ib3 ib2 ib1 de2 ph2 output mode no. d0 d1 d2 d3 d4 d5 d6 d7 d8 d9 d10 d11 outa outa- outb outb- i/o ratio dec mode 0 1 1 1 1 1 1 1 1 1 1 1 1 h l h l 100% slow 1 1 1 1 0 1 1 1 1 1 0 1 1 h l h l 96 slow 2 1 1 0 1 1 1 1 1 0 1 1 1 h l h l 91 slow 3 1 1 0 0 1 1 1 1 0 0 1 1 h l h l 87 slow 4 1 0 1 1 1 1 1 0 1 1 1 1 h l h l 83 slow 5 1 0 1 0 1 1 1 0 1 0 1 1 h l h l 78 slow 6 1 0 0 1 1 1 1 0 0 1 1 1 h l h l 74 slow 7 1 0 0 0 1 1 1 0 0 0 1 1 h l h l 70 slow 8 0 1 1 1 1 1 0 1 1 1 1 1 h l h l 61 slow 9 0 1 1 0 1 1 0 1 1 0 1 1 h l h l 52 slow 10 0 1 0 1 1 1 0 1 0 1 1 1 h l h l 44 slow 11 0 1 0 0 1 1 0 1 0 0 1 1 h l h l 35 slow 12 0 0 1 1 1 1 0 0 1 1 1 1 h l h l 26 slow 13 0 0 1 0 1 1 0 0 1 0 1 1 h l h l 17 slow 14 1 1 1 1 0 0 1 1 1 1 0 0 l h l h 100 fast 15 1 1 1 0 0 0 1 1 1 0 0 0 l h l h 96 fast 16 1 1 0 1 0 0 1 1 0 1 0 0 l h l h 91 fast 17 1 1 0 0 0 0 1 1 0 0 0 0 l h l h 87 fast 18 1 0 1 1 0 0 1 0 1 1 0 0 l h l h 83 fast 19 1 0 1 0 0 0 1 0 1 0 0 0 l h l h 78 fast 20 1 0 0 1 0 0 1 0 0 1 0 0 l h l h 74 fast 21 1 0 0 0 0 0 1 0 0 0 0 0 l h l h 70 fast 22 0 1 1 1 0 0 0 1 1 1 0 0 l h l h 61 fast 23 0 1 1 0 0 0 0 1 1 0 0 0 l h l h 52 fast 24 0 1 0 1 0 0 0 1 0 1 0 0 l h l h 44 fast 25 0 1 0 0 0 0 0 1 0 0 0 0 l h l h 35 fast 26 0 0 1 1 0 0 0 0 1 1 0 0 l h l h 26 fast 27 0 0 1 0 0 0 0 0 1 0 0 0 l h l h 17 fast 28 0 0 0 0 * * 0 0 0 0 * * off off off off 0 - note *: don't care (0 or 1) note 1: in the mixed decay mode, set d4 and d10 to 0 and set the md pin to a level shown below. programmable md voltage range v cc =5v specifications: 1.6 to 3.9v v cc =3.3v specifications: 1.2 to 2.5v current settings truth table * items in parentheses are defined by the serial data. ia4 (d0) ia3 (d1) ia2 (d2) ia1 (d3) set current i out current ratio (%) 1 1 1 1 11.5/11.5 vref/3.04re=i out 100 1 1 1 0 11.0/11.5 vref/3.04re=i out 95.65 1 1 0 1 10.5/11.5 vref/3.04re=i out 91.30 1 1 0 0 10.0/11.5 vref/3.04re=i out 86.95 1 0 1 1 9.5/11.5 vref/3.04re=i out 82.61 1 0 1 0 9.0/11.5 vref/3.04re=i out 78.26 1 0 0 1 8.5/11.5 vref/3.04re=i out 73.91 1 0 0 0 8.0/11.5 vref/3.04re=i out 69.56 0 1 1 1 7.0/11.5 vref/3.04re=i out 60.87 0 1 1 0 6.0/11.5 vref/3.04re=i out 52.17 0 1 0 1 5.0/11.5 vref/3.04re=i out 43.48 0 1 0 0 4.0/11.5 vref/3.04re=i out 34.78 0 0 1 1 3.0/11.5 vref/3.04re=i out 26.08 0 0 1 0 2.0/11.5 vref/3.04re=i out 17.39 note 1: the current ratios shown are calculated values.
lb1946 no.7115-9/16 sample application circuit at v cc =5v 10 2 13 14 12 11 98 7 6 5 4 3 1 15 16 17 18 19 20 21 22 23 24 25 26 27 28 lb1946 vbb e1 nc nc nc outa - outa outb - outb nc nc nc e2 vbb gnd vref2 nc cr2 st set data clk md cr1 vref1 v cc 10 f 5v 47 f 680pf 30k ? logic level inputs l l nc nc 42v sbd sbd 30k ? sbd sbd 1? 1? 1.5v 0.1 f md voltage setting (1.6 to 3.9v) fast mode: gnd slow mode: v cc 680pf top vie w
lb1946 no.7115-10/16 sample application circuit at v cc =3.3v 10 2 13 14 12 11 98765 4 3 1 15 16 17 18 19 20 21 22 23 2425 26 2728 lb1946 vbb e1 nc nc nc outa - outa outb - outb nc nc nc e2 vbb gnd vref2 nc cr2 st set data clk md cr1 vref1 v cc 10 f 3.3v 47 f 680pf 30k ? logic level inputs l l nc nc 42v sbd sbd 30k ? sbd sbd 1? 1? 1.0v 0.1 f md voltage setting (1.2 to 2.5v) fast mode: gnd slow mode: v cc 680pf top vie w
lb1946 no.7115-11/16 current path in slow decay mode regenerative current during upper-sid e transistor switching operation current path in fast decay mode vbb on off outa on outa sbd i sbd ve re vref figure 1 sense voltage comparator constant regenerative current when upper-side transistor is off motor current i i=ve/re current path when output is on output off internal reference voltage generated by setting voltage circuit vref 3.04 ilb01480 vbb on off outa outa sbd sbd re vref sense voltage comparator current path in fast decay mode current path when output is on on off vref 3.04 ilb01481
lb1946 no.7115-12/16 switching timing chart during pwm drive mode fast decay noise spike ilb01483 e pin output curren t serial transmission data (d4, d10) = low md pin: low cr pin output pin switching waveform tn e pin output curren t slow decay (upper-side chopping) serial transmission data (d4, d10) = high md pin: low cr pin output pin switching waveform ilb01482
lb1946 no.7115-13/16 mix decay logic setting when serial transmission data (d4, d10) is low md pin setting: 5v v cc type: 1.6 to 3.9v 3.3v v cc type: 1.2 to 2.5v cr voltage and md pin voltage are compared to select dual-side chopping or upper-side chopping. cr voltage > md pin voltage: dual-side chopping cr voltage < md pin voltage: upper-side chopping t on: output on time t off: output off time tm: fast decay time in mix decay mode tn: noise cancellation time tn t on t off tm md pin voltage level ilb01484 mix decay noise spike e pin output current cr pin output pin switching waveform
lb1946 no.7115-14/16 1. switching off time and noise cancellation time calculations notes on the cr pin setting (switching off time and noise canceller time) the noise canceller time (tn) and the switching off time (toff) are set using the following formulas. ? when v cc =5v noise canceller time (tn) tn c y r y ln {(1.5 - ri)/(4.0 - ri)} [s] cr pin charge current: 1.25ma switching off time (toff) toff -c y r y ln (1.5/4.8) [s] component value ranges r: 5.6k ? to 100k ? c: 470pf to 2000pf ? when v cc =3.3v noise canceller time (tn) tn c y r y ln {(1.06 - ri)/(2.66 - ri)} [s] cr pin charge current: 0.7ma switching off time (toff) toff -c y r y ln (1.06/3.1) [s] cr pin v cc line c : 680pf r : 30k ? e1 figure 2 cr pin internal circuit structure one-shot multi-vibrator blanking time circuit
lb1946 no.7115-15/16 2. notes on the md pin ? if slow decay mode is set up by setting the d4 and d10 bits in the input serial data to 1, the md pin must be shorted to gnd. ? if the decay mode is set up by setting th e d4 and d10 bits in the input serial data to 0, decay mode can be set with the md pin. when the v cc =5v specifications are used, the setting voltage range for mixed decay mode is 1.6 to 3.9v. when the v cc =3.3v specifications are used, the setting voltage range for mixed decay m ode is 1.2 to 2.5v. if mixed decay mode will not be used with the fast decay mode setting, either: short the md pin to gnd to select fast decay mode, or short the md pin to v cc to select slow decay mode. 3. usage notes ? notes on the vref pin since the vref pin inputs the reference voltage used to set the current, applications must be designed so that noise does not occur at this pin. ? notes on the gnd pins since this ic switches large currents, care is required with respect to the gnd pins. the pcb pattern in sections where large currents flow must be designed with low impedances and must be kept separate from the small-signal system. in particular, the gnd terminals of the e pin sense resistor (re) and external schottky barrier diode gnd terminals must be located as close as possible to the ic gnd. the capacitor between v cc and ground and between vbb and gnd must be as close as possible to the corresponding v cc and vbb pin in the pattern. ? power on sequence when turning the power systems on v cc logic level inputs (clk, data, set, and st) vref vbb when turning the power systems off vbb vref logic level inputs (clk, data, set, and st) v cc note that if the power supply for the logic level inputs is on when the v cc power supply is off, a bias with an unstable state will be applied to the protection diodes at the v cc pins, and this can cause incorrect operation.
lb1946 no.7115-16/16 ps this catalog provides information as of january, 2007. specifications and information herein are subject to change without notice. specifications of any and all sanyo semiconductor 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 s ymptoms 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 semiconductor co., ltd. strives to supply high- quality high-reliability products. however, any and all semiconductor products fail with some probabi lity. 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 semiconductor produc ts (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 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 product that you intend to use. information (including circuit diagrams and circui t parameters) herein is for example only; it is not guaranteed for volume production. sanyo semicondu ctor 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.

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