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TDA4865J Datasheet(PDF) 11 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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 11 page
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TDA4865J_TDA4865AJ_2
© NXP B.V. 2006. All rights reserved.
Product data sheet
Rev. 02 — 3 November 2006
11 of 18
NXP Semiconductors
TDA4865J; TDA4865AJ
Vertical deflection booster
[1]
With a heat sink of 2 K/W.
VP1,VN and VFB are referenced to ground of application; voltages are calculated with
+10 % tolerances.
The calculation formulae for supply voltages are as follows:
(1)
(2)
where:
U’L =Ldeflcoil × 2Idefl(max) × fv
fv = vertical deflection frequency
UD1 = forward voltage drop across D1
The calculation formulae for power consumption is:
(3)
(4)
(5)
where:
PIC = power dissipation of the IC
Ptot = total power dissipation
Pdefl = power dissipation of the deflection coil
Calculation formulae for maximum required thermal resistance for the heat sink at
Tj(max) = 110 °C:
(6)
(7)
Table 9.
Calculated values
Symbol
Value
Unit
TDA4865J
TDA4865AJ
VP1
815
V
VN
−13
−15
V
Ptot
8.5
12.1
W
Pdefl
3.85
3.85
W
PIC
4.65
8.25
W
Rth(tot)(max)
12.9
7.27
K/W
Tj(max)[1]
93
103.6
°C
tflb
650
720
µs
V
P1
V
osat
() p
R1
R
deflcoil
+
() I
defl max
()
U'
L
U
D1
+
×
+
=
V
N
V
osat
()n
R1
R
deflcoil
+
() I
defl max
()
U'
L
+
×
+
=
P
IC
P
tot
P
defl
=
P
tot
V
P1
U
D1
()
I
defl max
()
4
----------------------
V
N
I
defl max
()
4
----------------------
V
P1
V
N
+
() 0.01 0.2
+
×
+
×
+
×
=
P
defl
R
deflcoil
R1
+
3
---------------------------------
I
defl max
()
2
×
=
R
th tot
()
R
th j-mb
()
R
th mb-h
()
R
th h-a
()
++
=
R
th h-a
()
T
jmax
()
T
amb
P
IC
------------------------------------
R
th j-mb
()
R
th mb-h
()
=




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