Vertical Deflection Output Circuit
Overview
The LA7845N 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 LA7845N is suited for large screen
sets, being capable of driving screens ranging from 33 inches
to 37 inches.
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
Package Dimensions
unit : mm
3075-SIP7H
[LA7845N]
SANYO : SIP7H
Specifications
Maximum Ratings
at Ta = 25 C
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
V
CC
6 max
40
V
Output block supply voltage
V
CC
3 max
85
V
Deflection output current
I 2 max
1.5 to +1.5
Ap-o
Thermal resistance
j-c
4.0
C/W
Allowable power dissipation
Pd max
With arbitrarily large heat sink fins
11
W
Operating temperature
Topr
20 to +85
C
Storage temperature
Tstg
40 to +150
C
Operating Conditions
at Ta = 25 C
Parameter
Symbol
Conditions
Ratings
Unit
Recommended supply voltage
V
CC
6
24
V
Operating supply voltage range
V
CC
6 op
16 to 38
V
Recommended deflection output current
I 2 p-p
to 2.2
Ap-p
Ordering number: EN5150B
Monolithic Linear IC
LA7845N
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
D1096HA(II)/N3095HA(II)/61595HA(II) No.5150-1/4
Operating Characteristics
at Ta = 25 C, V
CC
6 = 24 V
Parameter
Symbol
Conditions
min
typ
max
Unit
Pump-up charge saturation
voltage
V
S
7-1
I 7 = 20 mA
1.8
V
Pump-up discharge saturation
voltage
V
S
6-7
I 7 = 1.1 A
3.2
V
Deflection output saturation
voltage (lower)
V
S
2-1
I 2 = 1.1 A
1.5
V
Deflection output saturation
voltage (upper)
V
S
3-2
I 2 = 1.1 A
3.5
V
Idling current
I
DL
35
70
mA
Midpoint voltage
V
MID
11.0
12.0
13.0
V
Block Diagram
Sample Application Circuit
(Single power supply)
LA7845N
No.5150-2/4
Sample Application Circuit
(Double power supply)
Sample Application Circuit
Unit (resistance:
, capacitance: F)
LA7845N
No.5150-3/4
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 and indemnify and 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.
LA7845N
No.5150-4/4
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