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 el ectronics 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. 22509 ms / o2599rm(ki) no.6208-1/6 LB1862 overview single-phase full-wave drive design and a compact package make these ics optimal for small fans (especially cpu cooling fans). low switching noise and effe ctive motor drive are further advantages. functions ? support for 5v/12v dual power supply voltage ? built-in regenerative circuit allows us e of reverse connection protection diode ? built-in hall amplifier with hysteresis (s upports core without auxiliary electrode) ? built-in lockup protection and automatic recovery circuits ? latch-type lockup detection output (rd) is low during rotation and high during stop ? hall bias pin and start/stop pin allow reduced current drain in standby mode ? built-in thermal protection circuit specifications absolute maximum ratings at ta = 25 c parameter symbol conditions ratings unit maximum supply voltage v cc max 17 v maximum output current i out max 0.8 a maximum output withstand voltage v out max 17 v rd maximum output withstand voltage v r max 17 v rd maximum output current i r max 5ma hb maximum output current i b max 10 ma st maximum input voltage v st max 15 v allowable power dissipation pd max 1.0 w operating temperature topr -30 to +85 c storage temperature tstg -55 to +150 c monolithic digital ic for fan motor single-phase full-wave driver orderin g numbe r : en6208b
LB1862 no.6208-2/6 allowable operating conditions at ta = 25 c parameter symbol conditions ratings unit power supply voltage v cc 3.8 to 16.8 v st input high level voltage st h 3 to 14 v st input low level voltage st l -0.3 to +0.4 v hall input common mode voltage v icm 0.2 to v cc -1.5 v electrical characteristics at ta = 25 c, v cc = 5v ratings parameter symbol conditions min typ max unit in drive mode (ct = ?l?, st = ?l?) 6.5 9.1 ma in lockup protection mode (ct = ?h?, st = ?l?) 2.2 3.1 ma current drain i cc in standby mode (st = ?h?) 110 150 a lockup detection capacitor charge current i ct 1 1.9 2.8 3.7 a capacitor discharge current i ct 2 0.32 0.46 0.60 a capacitor charge/discharge current ratio r ct r ct = i ct 1/i ct 2 5.0 6.0 7.0 ct charge voltage v ct 1 2.55 2.75 2.95 v ct discharge voltage v ct 2 1.6 1.8 2.0 v output low level voltage v ol i o = 200ma 0.2 0.3 v output high level voltage v oh i o = 200ma 3.9 4.1 v hall input sensitivity v hn zero peak value (including offset and hysteresis) 7 15 ma rd output pin low voltage v rd i rd = 5ma 0.1 0.3 v rd output pin leakage current i rd v rd = 15v 30 a hb output low voltage v hbl i hb = 5ma 1.0 1.3 v st pin input current i st v st = 5v 75 100 a package dimensions unit : mm (typ) 3098d sanyo : dip10s(300mil) 9.14 0.95 6.4 7.62 3.2 3.9 max 0.51 min (3.0) 15 10 6 0.25 0.48 (1.01) 1.78 pd max -- ta -20 0 20 40 60 80 100 0 1.2 0.8 0.6 0.4 0.2 85 -30 ambient temperature, ta -- c allowable power dissipation, pd max -- mw 0.52 1.0
LB1862 no.6208-3/6 pin assignment 1 in ? 2 in + 3 ct 4 out1 5 gnd 8st 7v cc 6 out2 10 9 rd hb top view LB1862 block diagram start/stop st gnd out1 out2 rd m ct v cc in + in ? hb hall 0.47 to 1 f charge / discharge circuit delay circuit delay circuit control circuit thermal protection circuit discharge pulse hysteresis amplifier truth table st in- in+ ct out1 out2 rd hb mode h - - - off off off off standby h l h l l h l l h l l rotating l - - h off off off l lockup protection activated latch-type rd output is low during rotation and high during stop.
LB1862 no.6208-4/6 startup v cc out ct rd power-on lockup protection/automatic recovery output off output off out rd ct locked output on released start/stop st out rd output off
LB1862 no.6208-5/6 design reference (1) v cc pin power supply pin for control block and motor drive. accepts a wide operation voltage range from 3.8 to 16.8 v, for 5v/12v dual po wer supply support. (2) out1, out2 pins single-phase coil output pins. bipolar drive output with upper side inverted and lower si de single output. built-in regenerative circuit regenerates kickback current between lower side npn outputs when a diode is used for protection against reverse connection. (3) in ? , in + pins hall input signal pins the hall signal is amplified into a square wave by the hall amplifier with hysteresis char acteristics of 3.5mv (typ.). the hall input signal amplitude should be 70mv or more. (4) ct pin this pin serves for connecting a capacitor between ct and gnd. the capacitor determines the characteristics of the built-in lockup protection circuit for preventing coil burnout in the case of motor restraint. once normal motor load is re stored, the automatic recovery circuit resets itself. changing the capacitance alters the lockup detection time. when a 0.47 mf capacitor is connected between ct and gnd lockup detection time : approx. 0.5s lockup protection time/automatic recovery time : approx. 0.16s (output on) approx. 1s (output off) when not using lockup protection function, this pin should be connected to ground. (5) rd pin open-collector output pin that is low during rotation and off when lockup is detected. the output is a latch type which stays off also when the automatic recovery circuit has restored drive mode unless the rotation actually resumes. (6) st pin and hb pin st pin : when input to this pin is high, motor drive is stopped (out is high impedance). at this time, rd output indicates lockup protection mode off. hb pin : hall bias switching pin. at st pin high input, hall bias is switched to reduce current drain in fan standby mode. if not used, both pins should be open. (7) thermal protection circuit when internal temperature tj of ic reaches 180 c, output current limiter is activ ated to protect against damage.
LB1862 ps no.6208-6/6 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. application circuit example 1 2 9 8 3 6 4 10 7 5 in ? in + hb st ct out2 out1 rd v cc gnd LB1862 h c2 c1=0.47 to 1 f (1) d1 is used to prevent ic destruction caused by reverse-connection. it can be omitted if no problems are expected. (2) c2 would not be required for the internal fan pcb but required for the power supply line in order to reduce the power line impedance and pass the regenerative current because a motor is basically an inductive load and it has a possibility of large current when the power is first applied or in other cases. (3) when ct is not used, it should be connected to ground. (4) when rd, st, and hb are not used, they should be left open or connected to ground. this catalog provides information as of february, 2 009. specifications and information herein are subject to change without notice.
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