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ST Microelectronics
ST Microelectronics

TDA8172 Datasheet

TV VERTICAL DEFLECTION OUTPUT CIRCUIT


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TDA8172
TV VERTICAL DEFLECTION OUTPUT CIRCUIT
... POWER AMPLIFIER
FLYBACK GENERATOR
THERMAL PROTECTION
DESCRIPTION
The TDA8172 is a monolithic integrated circuit in
HEPTAWATTTM package. It is a high efficiency
power booster for direct driving of vertical windings
of TV yokes. It is intended for use in Color and B &
W television as well as in monitors and displays.
PIN CONNECTIONS (top view)
7
6
5
4
3
2
1
Tab connected to Pin 4
BLOCK DIAGRAM
HEPTAWATT
(Plastic Package)
ORDER CODE : TDA8172
NON-INVERTING INPUT
OUTPUT STAGE SUPPLY
OUTPUT
GROUND
FLYBACK GENERATOR
SUPPLY VOLTAGE
INVERTING INPUT
+ VS
26
3
FLYBACK
G E NE R ATOR
1
P OWER
AMPLIFIER
7
TDA8172
4
5
THE R MAL
P ROTECTION
May 1996
1/5
Page 1

TDA8172
ABSOLUTE MAXIMUM RATINGS
Symbol
VS
V5, V6
V3
V1, V7
Supply Voltage (pin 2)
Flyback Peak Voltage
Voltage at Pin 3
Amplifier Input Voltage
Parameter
Io
Io
Io
I3
I3
Ptot
Tstg, Tj
Output Peak Current (non repetitive, t = 2 ms)
Output Peak Current at f = 50 or 60 Hz, t 10 µs
Output Peak Current at f = 50 or 60 Hz, t > 10 µs
Pin 3 DC Current at V5 < V2
Pin 3 Peak to Peak Flyback Current at f = 50 or 60 Hz, tfly 1.5 ms
Total Power Dissipation at Tcase = 90 °C
Storage and Junction Temperature
Value
35
60
+ Vs
+ Vs
– 0.5
2.5
3
2
100
3
20
– 40, +150
Unit
V
V
V
A
A
A
mA
A
W
°C
THERMAL DATA
Symbol
Rth (j–c)
Parameter
Thermal Resistance Junction-case
Max.
Value
3
Unit
°C/W
ELECTRICAL CHARACTERISTICS
(refer to the test circuits, VS = 35V, Tamb = 25oC unless otherwise specified)
Symbol
I2
I6
I1
V3L
V5
V5L
V5H
Tj
Parameter
Pin 2 Quiescent Current
Pin 6 Quiescent Current
Amplifier Input Bias Current
Pin 3 Saturation Voltage to GND
Quiescent Output Voltage
Output Saturation Voltage to GND
Output Saturation Voltage to Supply
Junction Temperature for Thermal Shut Down
Test Conditions
I3 = 0, I5 = 0
I3 = 0, I5 = 0
V1 = 1 V, V7 = 2 V
V1 = 2 V, V7 = 1 V
I3 = 20 mA
Vs = 35V, Ra = 39 k
I5 = 1.2 A
I5 = 0.7 A
– I5 = 1.2 A
– I5 = 0.7 A
Min.
Typ.
8
16
– 0.1
– 0.1
1
18
1
0.7
1.6
1.3
140
Max.
16
36
–1
–1
1.5
1.4
1
2.2
1.8
Unit Fig.
mA 1a
mA 1a
µA 1a
µA 1a
V 1c
V 1d
V 1c
V 1c
V 1b
V 1b
°C
2/5
Page 2

TDA8172
Figure 1 : DC Test Circuits.
Figure 1 a : Measurement of I1 ; I2 ; I6
VS
I2 I6
26
5
10k
7
V7
S1 a
1
4b
I1
1V
S1 : (a) I2 and I6 ; (b) I1
Figure 1 c : Measurement of V3L ; V5L
VS
I3 or I5
2 6 S1
3a
b
1
3V
7
V7
5
4
V3L
V5L
Figure 1 b : Measurement of V5H
26
1
1V
7
V7
5
4
VS
V5H
I5
Figure 1 d : Measurement of V5
26
12k
2V
1
74
V7
Ra
5
5.6k
VS
V5
S1 : (a) V3L ; (b) V5L
3/5
Page 3
Part Number TDA8172
Manufactur ST Microelectronics
Description TV VERTICAL DEFLECTION OUTPUT CIRCUIT
Total Page 5 Pages
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