Ordering number : EN6232A
LA7875N
LA7876N
LA7876NZ
Overview
Monolithic Linear IC
Vertical Deflection Output Circuit
The LA7875N, LA7876N, 7876NZ 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, 7876NZ achieve a significant reduction in power dissipation.
Also, since the bus control system signal processing 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 2.2Ap-p, it is appropriate for use in medium-size CRTs. Since the LA7876N, 7876NZ have maximum
deflection output current of 3Ap-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
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications 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 no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. 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.
D2607 TI IM / 62599 TH(OT) No.6232-1/4
LA7875N, 7876N, 7876NZ
Specifications
Maximum Ratings
at Ta = 25°C, Note: Values in parentheses apply to the LA7876N, 7876NZ.
Parameter
First pump-up supply voltage
Second pump-up supply voltage
Output block supply voltage
Allowable power dissipation
Deflection output current
Symbol
+B7 max
+B9 max
+B4 max
Pd max
I3 max
With an arbitrarily large heat sink
Conditions
Ratings
35
72
110
12
-1.5 to +1.5
(-1.9 to +1.9)
Thermal resistance
Operating temperature
Storage temperature
θj-c
Topr
Tstg
4(3)
-20 to +85
-40 to +150
Unit
V
V
V
W
Ap-o
°C/W
°C
°C
Operating Conditions
at Ta = 25°C, Note: Values in parentheses apply to the LA7876N, 7876NZ.
Parameter
Recommended supply voltage
Operating supply voltage range
Recommended deflection output current
Symbol
+B7
+B7 op
I3 p-p
Conditions
Ratings
30
16 to 33
Up to 2.2(Up to 3)
Unit
V
V
Ap-p
Operating Characteristics
at Ta = 25°C, +B7 = 30V, Note: Values in parentheses apply to the LA7876N, 7876NZ.
Parameter
Pump-up circuit 1 charge saturation voltage
Pump-up circuit 1 discharge saturation voltage
Pump-up circuit 2 charge saturation voltage
Pump-up circuit 2 discharge saturation voltage
Deflection output saturation voltage (lower)
Deflection output saturation voltage (upper)
Idling current
Midpoint voltage
Symbol
V(sat)8-2
V(sat)7-8
V(sat)10-2
V(sat)9-10
V(sat)3-2
V(sat)4-3
IDL
VMID
Conditions
min
I8=20mA
I8=-1.1A(-1.5A)
I10=20mA
I10=-1.1A(-1.5A)
I3=1.1A(1.5A)
I3=-1.1A(-1.5A)
35
14
15
Ratings
typ
max
1.8
3.2
1.8
3.2
1.5(1.7)
3.5(3.9)
70
16
V
V
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 (typ)
3248A
25.6
3.0 min
1.0 min
11.2
(11.8)
[LA7875N]
C 0.7
3.4
(10.0)
( 2.0)
2.4
1
(1.37)
2.54
0.5
10
1.15
4.5
15.4 max
(13.9)
0.4
1.2
SANYO : SIP10HD
No.6232-2/4
LA7875N, 7876N, 7876NZ
Package Dimensions
unit : mm (typ)
3024B
26.8
20.0
[LA7876N]
4.0
7.0
1
1.4
0.5
2.54
10
(1.97)
1.0 min
6.0
0.4
2.0
SANYO : SIP10H
Package Dimensions
unit : mm (typ)
3354
26.8
(20.0)
(R1.7)
R1.7
(11.8)
13.2max
(8.4)
[LA7876NZ]
HEAT SPREADER
4.0
(8.4)
(11.8)
16.0 MAX
7.0
3.6
1
(1.97)
2
2.54
0.5
10
1.4
0.4
1.6
2.2
SANYO : SIP10HZ
Pin Assignment and Block Diagram
Pump
Up1
Pump
Up2
AMP
3.8
9.0
Top view
1
2
3
4
5
6
7
8
9
10
Ver.OUTPUT
NON INV. INPUT
OUTPUT STAGE VCC
2nd PUMP UP OUT
INVERTING INPUT
1st PUMP UP OUT
GND
NC
VCC
VCC2
No.6232-3/4
LA7875N, 7876N, 7876NZ
Sample Application Circuit
(using both positive and negative power supply voltages)
Pump
Up2
Pump
Up2
AMP
1
2
3
4
5
6
7
8
9
10
+VCC
D.Y
Top view
-VCC
VREF
INPUT
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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 Co.,Ltd.
products described or contained herein.
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semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or
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to smoke or fire, or accidents that could cause damage to other property. When designing equipment, adopt
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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
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Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed
for volume production.
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with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third
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above.
This catalog provides information as of December, 2007. Specifications and information herein are subject
to change without notice.
PS No.6232-4/4
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