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TDA4865J Datasheet(PDF) 10 Page - NXP Semiconductors

Part No. TDA4865J
Description  eflection boosters for use in vertical deflection systems for frame frequencies up to 200 Hz.
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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TDA4865J_TDA4865AJ_2
© NXP B.V. 2006. All rights reserved.
Product data sheet
Rev. 02 — 3 November 2006
10 of 18
NXP Semiconductors
TDA4865J; TDA4865AJ
Vertical deflection booster
12.1 Example for both TDA4865J and TDA4865AJ
[1]
Flyback voltage measured against 0 V; for TDA4865J only.
Remark: the heat sink of the IC must be isolated against ground of the application (it is connected to pin GND).
(1) With CS2 (typical value between 47 nF and 150 nF) the flyback time and the noise behavior can be optimized.
(2) With R5 capacitor CF will be charged during scan and the value (typical value between 150 Ω and 270 Ω) depends on Idefl,
tflb and CF.
(3) R6 reduces the power dissipation of the IC. The maximum possible value depends on the application.
Fig 8.
Application diagram with TDA4865AJ
001aad304
3.9
(2 W)
240
Ω (2 W)
100
µF
470
µF
CF
R5(2)
D1
TDA4865AJ
R6(3)
7
INP
INN
VOUT
GND
VP2
VP1
VP3
65
4
3
2
1
DIFFERENTIAL
INPUT
STAGE
VERTICAL
OUTPUT
FLYBACK
GENERATOR
REFERENCE
CIRCUIT
THERMAL
PROTECTION
BYV27
470
µF
+12.5 V
−12.5 V
VP
VN
5.6
1.8 k
1.8 k
5.6
270
0.5
(1 W)
100
nF
RS1
RS2
CS1
CS2(1)
RP
R3
R2
R1
deflection
coil
from
deflection controller
Table 8.
Values given from application
Symbol
Value
Unit
Idefl(max)(M)
1.6 (peak value)
A
Ldeflcoil
10
mH
Rdeflcoil
4
RP
270
R1
0.5
R2
1.8
k
R3
1.8
k
VF[1]
50
V
Tamb
50
°C
Tdeflcoil
75
°C
Rth(j-mb)
4
K/W
Rth(mb-h)
0.5
K/W
Rth(h-a)
2
K/W




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