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Ordering number: EN5148B
Monolithic Linear IC
LA7841
Vertical Deflection Output Circuit
Overview
The LA7841 is a vertical deflection output IC for TVs and
CRT displays with excellent image quality that use a BUS
control system signal processing IC. This IC can drive the
direct (even including a DC component) deflection yoke with
the sawtooth wave output from the BUS control system signal
processing IC. When used in conjunction with Sanyo’s LA7615
series of BUS control system signal processing ICs for TVs,
this IC can process all color television signal system functions
through the BUS system. Because the maximum deflection
current is 2.2 Ap-p, the LA7841 is suited for large screen sets.
Features
.
Low power dissipation due to built-in pump-up circuit
.
Vertical output circuit
.
Thermal protection circuit built in
.
Excellent crossover characteristics
.
DC coupling possible
Specifications
Maximum Ratings atTa=25°C
Package Dimensions
unit : mm
3075-SIP7H
[LA7841]
SANYO : SIP7H
Parameter Symbol Conditions Ratings Unit
Maximum supply voltage V
Output block supply voltage V
Deflection output current I 2 max –1.5 to +1.5 Ap-o
Thermal resistance θj-c 4.0
Allowable power dissipation Pd max With arbitrarily large heat sink 9 W
Operating temperature Topr –20 to +85
Storage temperature Tstg –40 to +150
6 max 34 V
CC
3 max 70 V
CC
Operating Conditions atTa=25°C
Parameter Symbol Conditions Ratings Unit
Recommended supply voltage V
Operating supply voltage range V
Recommended deflection output current I 2 p-p to 2.2 Ap-p
624V
CC
6op 16to33 V
CC
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
D1096HA(II)/61595HA(II) No.5148-1/4
C/W
°
C
°
C
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LA7841
Operating Characteristics atTa=25°C, VCC6=24V
Parameter Symbol Conditions min typ max Unit
Pump-up charge saturation
voltage
Pump-up discharge saturation
voltage
Deflection output saturation
voltage (lower)
Deflection output saturation
voltage (upper)
Idling current I
Midpoint voltage V
Block Diagram
7-1 I7=20mA 1.8 V
V
S
V
6-7 I 7 = –1.1 A 3.2 V
S
2-1 I 2 = 1.1 A 1.5 V
V
S
3-2 I 2 = –1.1 A 3.5 V
V
S
DL
MID
35 65 mA
11.0 12.0 13.0 V
Sample Application Circuit
(Single power supply)
No.5148-2/4
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Sample Application Circuit
(Double power supply)
LA7841
Sample Application Circuit
Unit (resistance: Ω, capacitance: F)
No.5148-3/4
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LA7841
No products described or contained herein are intended for use in surgical implants, life-support systems,
aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like,
the failure of which may directly or indirectly cause injury, death or property loss.
Anyone purchasing any products described or contained herein for an above-mentioned use shall:
1 Accept full responsibility andindemnifyand defend SANYO ELECTRIC CO., LTD.,its affiliates, subsidiaries and
distributors and all their officers and employees, jointly and severally, against any and all claims and litigation
and all damages, cost and expenses associated with such use:
2 Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on
SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees
jointly or severally.
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 other rights of third parties.
This catalog provides information as of December, 1996. Specifications and information herein are subject to change without notice.
No.5148-4/4
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