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Sanyo
Sanyo

LA7840 Datasheet

Vertical Deflection Output Circuit


LA7840 Datasheet Preview


Ordering number: EN5147B
Monolithic Linear IC
LA7840
Vertical Deflection Output Circuit
Overview
The LA7840 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 1.8 Ap-p, the LA7840 is suited for small and
medium screen sets.
Package Dimensions
unit : mm
3075-SIP7H
[LA7840]
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 at Ta = 25 °C
Parameter
Maximum supply voltage
Output block supply voltage
Deflection output current
Thermal resistance
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VCC6 max
VCC3 max
I 2 max
θj-c
Pd max
Topr
Tstg
Conditions
With arbitrarily large heat sink
Operating Conditions at Ta = 25 °C
Parameter
Recommended supply voltage
Operating supply voltage range
Recommended deflection output current
Symbol
VCC6
VCC6 op
I 2 p-p
Conditions
SANYO : SIP7H
Ratings
34
70
–1.5 to +1.5
4.0
9
–20 to +85
–40 to +150
Unit
V
V
Ap-o
°C/W
W
°C
°C
Ratings
24
16 to 33
to 1.8
Unit
V
V
Ap-p
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.5147-1/4
Page 1

LA7840
Operating Characteristics at Ta = 25 °C, VCC6 = 24 V
Parameter
Pump-up charge saturation
voltage
Pump-up discharge saturation
voltage
Deflection output saturation
voltage (lower)
Deflection output saturation
voltage (upper)
Idling current
Midpoint voltage
Symbol
VS7-1
VS6-7
VS2-1
VS3-2
IDL
VMID
I 7 = 20 mA
I 7 = –0.9 A
I 2 = 0.9 A
I 2 = –0.9 A
Conditions
Block Diagram
min typ max Unit
1.8 V
3.0 V
1.3 V
3.2 V
35 65 mA
11.0 12.0 13.0 V
Sample Application Circuit
(Single power supply)
No.5147-2/4
Page 2

Sample Application Circuit
(Double power supply)
LA7840
Sample Application Circuit
Unit (resistance: , capacitance: F)
No.5147-3/4
Page 3
Part Number LA7840
Manufactur Sanyo
Description Vertical Deflection Output Circuit
Total Page 4 Pages
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