http://www.datasheet4u.com

900,000+ Datasheet PDF Search and Download

Datasheet4U offers most rated semiconductors datasheets pdf


ST Microelectronics
ST Microelectronics

TDA8172 Datasheet

TV VERTICAL DEFLECTION OUTPUT CIRCUIT


TDA8172 Datasheet Preview


TDA8172
TV VERTICAL DEFLECTION OUTPUT CIRCUIT
FEATURES
s Power Amplifier
s Flyback Generator
s 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 black &
white television as well as in monitors and
displays.
PIN CONNECTION (top view)
HEPTAWATT
(Plastic Package)
ORDER CODE: TDA8172
BLOCK DIAGRAM
October 2003
1/7
1
Page 1

TDA8172
1 ABSOLUTE MAXIMUM RATINGS
Symbol
VS
V5, V6
V3
V1, V7
I0
I0
I0
I3
I3
I3
Ptot
Tstg, Tj
Parameter
Supply Voltage (pin 2)
Flyback Peak Voltage
Voltage at Pin 3 (see Note 1)
Amplifier Input Voltage
Output Peak Current (non repetitive, t = 2ms)
Output Peak Current at f = 50 to 200 Hz, t 10µs
Output Peak Current at f = 50 to 200 Hz, t > 10µs
Pin 3 DC Current at V5 < V2
Pin 3 Flyback Current at f = 50 to 200 Hz, tfly 1.5ms
Pin 3 Sink Current at f = 50 to 200 Hz, t 10µs
Total Power Dissipation at Tcase = 90 °C
Storage and Junction Temperature
Note 1:This occurs during the first part of flyback pulse
Value
35
60
VS + 3
VS - 0.5
2.5
±5
2
100
±1.5
5
20
-40, +150
Unit
V
V
V
V
A
A
A
mA
A
A
W
°C
2 THERMAL DATA
Symbol
Rth(j-c)
Parameter
Thermal Resistance Junction-case
Value
3
Unit
°C/W
3 ELECTRICAL CHARACTERISTICS
(refer to the test circuits, VS = 35V, Tamb = 25°C unless otherwise specified)
Symbol
Parameter
Test Conditions
I2 Pin 2 Quiescent Current
I6 Pin 6 Quiescent Current
I1 Amplifier Input Bias Current
V3L Pin 3 Saturation Voltage to GND
V5 Quiescent Output Voltage
V5L Output Saturation Voltage to GND
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
V5H Output Saturation Voltage to Supply
- I5 = 1.2 A
- I5 = 0.7 A
Tj Junction Temperature for Thermal Shutdown
Min. Typ. Max. Unit Fig.
8 16 mA 1
16 36 mA 1
- 0.1 - 1 µA 1
- 0.1 - 1 µA 1
1 1.5 V 3
18 V 4
1 1.4 V 3
0.7 1 V 3
1.6 2.2 V 2
1.3 1.8 V 2
140 °C
2/7
1
Page 2

Figure 1. Measurement of I1, I2, I6
Figure 2. Measurement of V5H
TDA8172
I2
2
I6
6
5
TDA8172
1
74
V7
+VS
10k
Sa
b
I1
1V
26
1 TDA8172 5
1V
7
V7
4
+VS
V5H
-I5
S1: (a) I2 and I6 ; (b) I1
Figure 3. Measurement of V3L, V5L
Figure 4. Measurement of V5
+VS
I3 or I5
2 6 S1 a
3b
1 TDA8172
7
V7
5
4
V3L
V5L
26
12k
2V
1 TDA8172
7
V7
4
Ra
5
5.6k
+VS
V5
S: (a) V3L ; (b) V5L
3/7
Page 3

TDA8172
Figure 5. AC test circuit
GND
t0
1N4001
VS
C1
0.1µF
C2
470µF
D1
C3
220µF
tfly
VREF
Vi R1
10k
RT1 4.7k
2
7
1
63
TDA8172
5
4
IN
R2
5.6k
R3
12k
C6
4.7µF
R4
8.2k
*Recommended for VREF filtering
C4
0.22µF
R7
1.5
Ly
R6
330
Ly
24.6mH
Ry
9.6
to
C5
2200µF
R5
8.2
R5Ly
t0
V7
4/7
Page 4
Part Number TDA8172
Manufactur ST Microelectronics
Description TV VERTICAL DEFLECTION OUTPUT CIRCUIT
Total Page 7 Pages
PDF Download
TDA8172 datasheet
Download PDF File
TDA8172 datasheet
View Html for PC & Mobile


Related Datasheet

TDA8170 , TDA8171 , TDA8172 , TDA8173 , TDA8174 , TDA8174A , TDA8174AW , TDA8174W , TDA8175 , TDA8176 , TDA8177 , TDA8177F , TDA8178 , TDA8178FS , TDA8178S , TDA8179F , TDA8179FS , TDA8179S ,

site map

webmaste! click here

contact us

Buy Components