Sanyo LA7876N Specifications
Any and all SANYO 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 representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO 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 products described or contained
herein.
Overview
The LA7875N, LA7876N are designed for use in internet
TVs and high-resolution CRT monitors that require a
narrow vertical return period. These ICs succeed in
achieving a narrow vertical return period by adopting a
new 3× pump-up technique in the voltage pump-up circuit.
Since this allows the use of a reference voltage lower than
that used with the 2× pump-up technique, the LA7875N,
LA7876N achieve a significant reduction in power
dissipation. Also, since the bus control system signalprocessing IC can control these ICs and these ICs can
directly drive the deflection yoke for all frequencies down
to DC from the sawtooth wave output, shift operation,
which is required for wide aspect ratio television, can be
controlled from the bus. Since the LA7875N has a
maximum deflection output current of 2.2 A p-p, it is
appropriate for use in medium-size CRTs. Since the
LA7876N has a maximum deflection output current of 3 A
p-p, it is appropriate for use in larger CRTs.
Features
•3× voltage pump-up circuit
• Low power dissipation
• Operational amplifier type vertical output circuit
• Capable of direct DC drive of the deflection yoke
• Excellent crossover characteristics
Package Dimensions
unit: mm
3248-SIP10H-D
unit: mm
3024A-SIP10H
(11.8)
(10.0)
0.5
1.37
2.54
25.6
2.0
3.4
C0.7
15.4max
1.0min
11.2
13.9
4.5
110
0.4
1.2
1.15
2.4
Monolithic Linear IC
62599TH(OT) No. 6232-1/4
SANYO: SIP10H-D
[LA7875N]
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
Vertical Deflection Output Circuit
LA7875N, 7876N
Ordering number : EN6232
SANYO: SIP10H
[LA7876N]
27.0
20.0
8.4
7.0
4.0
R1.7
11.8
13.2max
1.4
0.5
6.0
1.0 min
101
2.54
2.07
0.4
2.0
No. 6232-2/4
LA7875N, 7876N
Parameter Symbol Conditions Ratings Unit
First pump-up supply voltage V
CC
7max 35 V
Second pump-up supply voltage V
CC
9max 72 V
Output block supply voltage V
CC
4max 110 V
Allowable power dissipation Pdmax With an arbitrarily large heat sink 12 W
Deflection output current I3max
–1.5 to +1.5
Ap-o
(–1.9 to +1.9)
Thermal resistance
θ
j-c 4 (3) °C/W
Operating temperature Topr –20 to +85 °C
Storage temperature Tstg –40 to +150 °C
Specifications
Maximum Ratings at Ta = 25°C
Parameter Symbol Conditions Ratings Unit
Recommended supply voltage V
CC
7 30 V
Operating supply voltage range V
CC
7op 16 to 33 V
Recommended deflection output current I3p-p
Up to 2.2
Ap-p
(Up to 3)
Operating Conditions at Ta = 25°C
Note: Values in parentheses apply to the LA7876N.
Parameter Symbol Conditions
Ratings
Unit
min typ max
Pump-up circuit 1 charge saturation voltage V(sat) 8-2 I8 = 20 mA 1.8 V
Pump-up circuit 1 discharge saturation voltage V(sat) 7-8 I8 = –1.1A (–1.5 A) 3.2 V
Pump-up circuit 2 charge saturation voltage V(sat) 10-2 I10 = 20 mA 1.8 V
Pump-up circuit 2 discharge saturation voltage V(sat) 9-10 I10 = –1.1A (–1.5 A) 3.2 V
Deflection output saturation voltage (lower) V(sat) 3-2 I3 = 1.1A (1.5 A) 1.5 (1.7) V
Deflection output saturation voltage (upper) V(sat) 4-3 I3 = –1.1A (–1.5 A) 3.5 (3.9) V
Idling current IDL 35 70 mA
Midpoint voltage V
MID
14 15 16 V
Operating Characteristics at Ta = 25°C, VCC8 = 30 V
Note: Values in parentheses apply to the LA7876N.
Note: Values in parentheses apply to the LA7876N.
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