92706 / 90705 ms ot b8-4579 no.7879-1/4 LA78040 overview the LA78040 is a vertical deflection output ic for high image quality tv and crt displays that supports the use of a bus control system signal-processing ic. the sawtooth waveform from the bus control system signal-processing ic can directly drive the deflection yoke (including the dc component). color tv vertical deflection system adjustment functions can be controlled over a bus system by connecting the LA78040 to a sanyo la768x series or la769xx series bus control system signal-processing ic. since the LA78040 provides a maximum deflection current of 1.8ap-p, it is optimal for small and medium size crts. functions ? built-in pump-up circuit for low power dissipation. ? vertical output circuit. ? thermal protection circuit. specifications maximum ratings at ta = 25 c parameter symbol conditions ratings unit pump-up block supply voltage +b2 max 34 v output block supply voltage +b6 max 70 v allowable power dissipation pd max mounted on an arbitrarily large heat sink. 9 w deflection output current i5 max -1.5 to +1.5 ap-o thermal resistance j-c 3 c /w operating temperature topr -20 to +85 c storage temperature tstg -40 to +150 c ordering number : en7879a monolithic linear ic tv and crt display vertical output ic with bus control support 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 values (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.
LA78040 no.7879-2/4 operating conditions at ta = 25 c parameter symbol conditions ratings unit recommended supply voltage +b2 24 v operating supply voltage range +b2op 16 to 33 v deflection output current i5p-p to 1.8 ap-p operating characteristics at ta = 25 c, +b2 = 24v ratings parameter symbol conditions min typ max unit deflection output saturation voltage (lower) vsat5-4 i5 = 0.9a 1.3 v deflection output saturation voltage (upper) vsat6-5 i5 = -0.9a 3.2 v pump-up charge saturation voltage vsat3-4 i3 = 20ma 1.8 v pump-up discharge saturation voltage vsat2-3 i3 = 0.9a 3.0 v idling current idl 20 50 ma midpoint voltage vmid 11.0 12.0 13.0 v note: current flowing into the ic is positive (+) and current flowing out is negative (-). package dimensions unit : mm 3286
LA78040 no.7879-3/4 block diagram application circuit exampl e 1 (single power supply) 5v +v cc (24v) in 10k ? 33k ? 10k ? 11k ? 4.7 ? 330 ? 1.0 ? 0.1 f 100 f 100 ? 10k ? 1
LA78040 ps no.7879-4/4 application circuit example 2 (dual power supply) vref +v cc in -v cc LA78040 1 2 3 4 5 6 7 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 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. sanyo semiconductor co., ltd. strives to supply high-quality high-reliability products. however, any and all semiconductor products fail with some probability. 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 products (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 circuit parameters) herein is for example only; it is not guaranteed for volume production. sanyo semiconductor 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. this catalog provides i nformation as of september, 2005. specificati ons and information her ein are subject to change without notice.
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