SGS Thomson Microelectronics TDA8172 Datasheet
TV VERTICALDEFLECTION OUTPUT CIRCUIT
.
POWERAMPLIFIER
.
FLYBACKGENERATOR
.
THERMAL PROTECTION
DESCRIPTION
The TDA8172 is a monolithic integrated circuit in
HEPTAWATT
power booster fordirectdriving of verticalwindings
of TVyokes. It is intendedfor usein Color andB &
W televisionas wellas in monitorsand displays.
PIN CONNECTIONS(top view)
TM
package. It is a high efficiency
TDA8172
HEPTAWATT
(Plastic Package)
ORDER CODE : TDA8172
BLOCK DIAGRAM
Tab connectedto Pin 4
236
1
7
TDA8172
POWER
AMPLIFIER
4
7
6
5
4
3
2
1
FLYBACK
GENERATOR
THERMAL
PROTECTION
+V
NON-INVERTING INPUT
OUTPUT STAGE SUPPLY
OUTPUT
GROUND
FLYBACK GENERATOR
SUPPLY VOLTAGE
INVERTING INPUT
8172-01.EPS
S
5
YOKE
May 1996
8172-02.EPS
1/5
TDA8172
ABSOLUTEMAXIMUM RATINGS
Symbol Parameter Value Unit
V
S
V
5,V6
V
3
V1,V7Amplifier InputVoltage + V
I
o
I
o
I
o
I
3
I
3
P
tot
T
stg,Tj
THERMALDATA
Symbol Parameter Value Unit
R
th (j–c)
Supply Voltage (pin 2) 35 V
Flyback Peak Voltage 60 V
Voltage at Pin 3 + V
– 0.5
s
s
Output Peak Current (non repetitive, t = 2 ms) 2.5 A
Output Peak Current at f = 50 or 60 Hz, t ≤ 10 µs3A
Output Peak Current at f = 50 or 60 Hz, t >10 µs2A
Pin 3 DC Current at V5<V
2
Pin 3 Peak to Peak Flyback Current at f = 50 or 60 Hz, t
Total Power Dissipation at T
=90°C20W
case
≤ 1.5 ms 3 A
fly
100 mA
Storage and Junction Temperature – 40, +150 °C
Thermal Resistance Junction-case Max. 3 °C/W
V
8172-01.TBL
8172-02.TBL
ELECTRICAL CHARACTERISTICS
(refer to the testcircuits, V
=35V, T
S
Symbol Parameter Test Conditions Min. Typ. Max. Unit Fig.
Pin 2 Quiescent Current I3=0,I5=0 8 16 mA 1a
I
2
Pin 6 Quiescent Current I3=0,I5= 0 16 36 mA 1a
I
6
Amplifier Input Bias Current V1= 1 V, V7= 2 V – 0.1 – 1 µA1a
I
1
V
V
V
V
Pin 3 Saturation Voltage to GND I3= 20 mA 1 1.5 V 1c
3L
Quiescent Output Voltage Vs= 35V, Ra=39kΩ 18 V 1d
5
Output Saturation Voltage to GND I5= 1.2 A 1 1.4 V 1c
5L
Output Saturation Voltage to Supply – I5= 1.2A 1.6 2.2 V 1b
5H
Junction Temperature for Thermal Shut Down 140 °C
T
j
=25oC unlessotherwisespecified)
amb
= 2 V, V7= 1 V – 0.1 – 1 µA1a
V
1
= 0.7 A 0.7 1 V 1c
I
5
= 0.7A 1.3 1.8 V 1b
–I
5
8172-03.TBL
2/5
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