UNISONIC TECHNOLOGIES CO., LTD
T8172
VERTICAL DEFLECTION
OUTPUT CIRCUIT
DESCRIPTION
The UTC
T8172
is a monolithic integrated circuit and designed for
Color and B/W TV, Monitors and Displays application. The IC is a
differential input, single ended output amplifier with a flyback
generator. It is intended to directly drive vertical windings of
deflection coils with high efficiency.
LINEAR INTEGRATED CIRCUIT
FEATURES
* Power Amplifier
* Thermal Protection Circuit
* Flyback Generator
* Low cross-over distortion
*Pb-free plating product number: T8172L
APPLICATIONS
* Vertical deflection for monitors and TVs
ORDERING INFORMATION
Order Number
Normal
Lead Free Plating
T8172-TB7-T
T8172L-TB7-T
Package
TO-220Z7
Packing
Tube
www.unisonic.com.tw
Copyright © 2005 Unisonic Technologies Co., Ltd
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QW-R121-009,A
T8172
PIN CONFIGURATIONS
7
6
5
4
3
2
1
LINEAR INTEGRATED CIRCUIT
Non-Inverting input
Output stage supply
Output
Ground
Flyback generator
Supply voltage
Inverting input
Tab connected to Pin 4
BLOCK DIAGRAM
2
6
3
Flyback
Generator
1
-
Power
Amplifier
Drive
Stage
Output
Stage
5
7
+
Thermal
Protection
4
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QW-R121-009,A
T8172
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Supply Voltage (pin 2)
Flyback Peak Voltage
LINEAR INTEGRATED CIRCUIT
SYMBOL
V
CC
V
5
, V
6
RATINGS
35
60
UNIT
V
V
Voltage at Pin 3
V3
+ V
CC
+ V
cc
– 0.5
Amplifier Input Voltage
V
1
, V
7
V
Output Peak Current
I
O(PEAK)
2.5
A
(non repetitive, t = 2 ms)
Output Peak Current
I
O(PEAK)
3
A
( f = 50 or 60 Hz, t
≤
10 us )
Output Peak Current
I
O(PEAK)
2
A
( f = 50 or 60 Hz, t > 10 us )
Pin 3 DC Current at V
5
<V
2
I
3
100
mA
Pin 3 Peak to Peak Flyback Current
I
3
3
A
( f = 50 or 60 Hz, t
fb
≤
1.5 ms )
Total Power Dissipation
P
D
20
W
(T
C
= 90 °C )
Junction Temperature
T
J
+150
°C
Storage Temperature
T
STG
-40~+150
°C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
THERMAL DATA
PARAMETER
Thermal Resistance Junction-Case
SYMBOL
θ
JC
RATING
3
UNIT
°C/W
ELECTRICAL CHARACTERISTICS
(T
a
= 25°C, V
CC
= 35V, unless otherwise specified)
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
Thermal Shutdown Junction Temperature
SYMBOL
TEST CONDITIONS
I
2
I
3
=0, I
5
=0
I
6
I
1
V
3L
V
5
V
5L
V
5H
T
J
I
3
=0, I
5
= 0
V
1
= 1V, V
7
= 2V
V
1
= 2V, V
7
= 1V
I
3
= 20mA
V
CC
= 35V, Ra =39kW
I
5
= 1.2A
I
5
= 0.7A
-I
5
= 1.2A
-I
5
= 0.7A
MIN
TYP
8
16
-0.1
-0.1
1
18
1
0.7
1.6
1.3
140
1.4
1
2.2
1.8
MAX UNIT
16
mA
36
-1
-1
1.5
mA
μA
μA
V
V
V
V
V
V
°C
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R121-009,A
T8172
APPLICATION CIRCUIT
+V
CC
LINEAR INTEGRATED CIRCUIT
2
6
3
Flyback
Generator
1
7
-
Power
Amplifier
+
Drive
Stage
Output
Stage
5
Deflection Coil
Thermal
Protection
4
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 5
QW-R121-009,A
T8172
TEST CIRCUIT
FOR DC Test Circuit
LINEAR INTEGRATED CIRCUIT
Figure 1. Measurement of I
1
; I
2
; I
6
Figure 2. Measurement of V
5H
Figure 3. Measurement of V
3L
; V
5L
Figure 4. Measurement of V
5
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R121-009,A
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