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Sanyo
Sanyo

LA78040 Datasheet

TV and CRT Display Vertical Output IC


LA78040 Datasheet Preview


Ordering number : EN7879A
LA78040
Monolithic Linear IC
TV and CRT Display Vertical
Output IC with Bus Control
Support
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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
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
θj-c
Topr
Tstg
Conditions
Mounted on an arbitrarily large heat sink.
Ratings
34
70
9
-1.5 to +1.5
3
-20 to +85
-40 to +150
Unit
V
V
W
Ap-o
°C /W
°C
°C
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.
92706 / 90705 MS OT B8-4579 No.7879-1/4
Page 1

Operating Conditions at Ta = 25°C
Parameter
Recommended supply voltage
Operating supply voltage range
Deflection output current
Symbol
+B2
+B2op
I5p-p
LA78040
Conditions
Operating Characteristics at Ta = 25°C, +B2 = 24V
Parameter
Symbol
Conditions
Deflection output saturation
voltage (lower)
Deflection output saturation
voltage (upper)
www.DataSheet4PUu.cmopm-up charge saturation
voltage
Pump-up discharge saturation
voltage
Idling current
Vsat5-4
Vsat6-5
Vsat3-4
Vsat2-3
Idl
I5 = 0.9A
I5 = -0.9A
I3 = 20mA
I3 = 0.9A
Midpoint voltage
Vmid
Note: Current flowing into the IC is positive (+) and current flowing out is negative (-).
Package Dimensions
unit : mm
3286
Ratings
24
16 to 33
To 1.8
Unit
V
V
Ap-p
Ratings
min typ max
Unit
1.3 V
3.2 V
1.8 V
20
11.0
12.0
3.0 V
50
13.0
mA
V
No.7879-2/4
Page 2

Block Diagram
LA78040
www.DataSheet4U.com
Application Circuit Example 1 (Single power supply)
LA78040
+VCC(24V)
1234567
10k
5V
IN 10k
33k
10k
No.7879-3/4
Page 3
Part Number LA78040
Manufactur Sanyo
Description TV and CRT Display Vertical Output IC
Total Page 4 Pages
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