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Ordering number : EN7880A
Monolithic Linear IC
LA78040N
Overview
TV and CRT Display Vertical Output IC with Bus Control Support
The LA78040N 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 LA78040N to a Sanyo LA768X series or LA769XX series bus control system signal-processing IC. Since the LA78040N provides a maximum deflection current of 1.7Ap-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 = 25C
Parameter Pump-up block supply voltage Output block supply voltage Allowable power dissipation Deflection output current Thermal resistance Operating temperature Storage temperature Symbol +B2 max +B6 max Pd max I5 max j-c
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Conditions
Ratings 34 70 9 -1.4 to +1.4 3 -20 to +85 -40 to +150
Unit V V W Ap-o C/W C C
Mounted on an arbitrarily large heat sink.
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90705 MS OT B8-6984 No.7880-1/4
LA78040N
Operating Conditions at Ta = 25C
Parameter Recommended supply voltage Operating supply voltage range Deflection output current +B2 +B2op I5p-p Symbol Conditions Ratings 24 16 to 33 To 1.8 Unit V V Ap-p
Operating Characteristics at Ta = 25C, +B2 = 24V
Ratings Parameter Deflection output saturation voltage (lower) Deflection output saturation voltage (upper) Pump-up charge saturation voltage Pump-up discharge saturation voltage Idling current Midpoint voltage Idl Vmid 20 11.0 12.0 Vsat2-3 I3 = 0.9A Vsat3-4 I3 = 20mA Vsat6-5 I5 = -0.9A Symbol Vsat5-4 I5 = 0.9A Conditions min typ max 1.3 3.2 1.8 3.0 50 13.0 V V V V mA V Unit
Note: Current flowing into the IC is positive (+) and current flowing out is negative (-).
Package Dimensions
unit : mm 3286
No.7880-2/4
LA78040N
Block Diagram
Application Circuit Example 1 (Single power supply)
LA78040N
1 +VCC(24V) 100F 2 100F 3 4 5 6 1F 7 10k 10k 5V
330
33k 4.7F
10k 1000F
11k
1.0
1.0
IN
10k
0.1F
No.7880-3/4
LA78040N
Application Circuit Example 2 (Dual power supply)
LA78045
1 +VCC 2 3 4 5 6 7
-VCC
IN
Vref
! Specifications of any and all SANYO 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 Electric 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 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, of otherwise, without the prior written permission of SANYO Electric 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 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 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 h ih f hi d i This catalog provides information as of September, 2005. Specifications and information herein are subject to change without notice.
PS No.7880-4/4

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