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ST Microelectronics
ST Microelectronics

TDA8177 Datasheet

VERTICAL DEFLECTION BOOSTER


TDA8177 Datasheet Preview


TDA8177
VERTICAL DEFLECTION BOOSTER
...... POWER AMPLIFIER
FLYBACK GENERATOR
THERMAL PROTECTION
OUTPUT CURRENT UP TO 3.0APP
FLYBACK VOLTAGE UP TO 70V (on Pin 5)
SUITABLE FOR DC COUPLING APPLICATION
DESCRIPTION
Designed for monitors and high performance TVs,
the TDA8177 vertical deflection booster delivers
flyback voltages up to 70V.
The TDA8177 operates with supplies up to 35V and
provides up to 3APP output current to drive the yoke.
The TDA8177 is offered in HEPTAWATT package.
PIN CONNECTIONS
7
6
5
4
3
2
1
Tab connected to Pin 4
HEPTAWATT
(Plastic Package)
ORDER CODE : TDA8177
NON-INVERTING INPUT
OUTPUT STAGE SUPPLY
OUTPUT
GROUND
FLYBACK GENERATOR
SUPPLY VOLTAGE
INVERTING INPUT
BLOCK DIAGRAM
OUTPUT
SUPPLY STAGE
VOLTAGE SUPPLY
26
FLYBACK
GENERATOR
3
FLYBACK
GENERATOR
INVERTING INPUT 1
NON-INVERTING INPUT 7
POWER
AMPLIFIER
TDA8177
4
GROUND
5 OUTPUT
THERMAL
PROTECTION
December 1998
1/5
Page 1

TDA8177
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
VS
V6
V1 , V7
IO
I3
I3
VESD
Toper
Tstg
Tj
Supply Voltage (Pin 2) (see note 1)
Flyback Peak Voltage (Pin 6) (see note 1)
Amplifier Input Voltage (Pins 1-7) (see note 1)
Maximum Output Peak Current (see notes 2 and 3)
Maximum Sink Current (first part of flyback) (t < 1ms)
Maximum Source Current (t < 1ms)
Electrostatic Handling for all pins (see note 4)
Operating Ambient Temperature
Storage Temperature
Junction Temperature
Notes : 1. Versus Pin 4.
2. The output current can reach 4A peak for t 10µs (up to 120Hz).
3. Provided SOAR is respected (see Figures 1 and 2).
4. Equivalent to discharging a 100pF capacitor through a 1.5kseries resistor.
THERMAL DATA
Symbol
Rth (j-c)
Tt
Tjr
Parameter
Junction-case Thermal Resistance
Temperature for Thermal Shutdown
Recommended Max. Junction Temperature
Max.
Value
40
75
- 0.3, + VS
2.5
2.5
2.5
2000
- 20, + 75
- 40, + 150
+150
Value
3
150
120
Unit
V
V
V
A
A
A
V
oC
oC
oC
Unit
oC/W
oC
oC
ELECTRICAL CHARACTERISTICS
(VS = 35V, TA = 25oC, unless otherwise specified)
Symbol
Parameter
Test Conditions
VS
I2
I6
IO
I1
I7
VIO
VIO/dt
GV
V5L
V5H
VD5 - 6
VD3 - 2
V3SL
V3SH
Operating Supply Voltage Range
Pin 2 Quiescent Current
I3 = 0, I5 = 0
Pin 6 Quiescent Current
I3 = 0, I5 = 0, V6 = 35V
Max. Peak Output Current
Amplifier Bias Current
V1 = 22V, V7 = 23V
Amplifier Bias Current
V1 = 23V, V7 = 22V
Offset Voltage
Offset Drift versus Temperature
Voltage Gain
Output Saturation Voltage to GND (Pin 4)
I5 = 1.5A
Output Saturation Voltage to Supply (Pin 6)
I5 = - 1.5A
Diode Forward Voltage between Pins 5-6
I5 = 1.5A
Diode Forward Voltage between Pins 3-2
I3 = 1.5A
Saturation Voltage on Pin 3
I3 = 20mA
Saturation Voltage to Pin 2 (2nd part of flyback) I3 = - 1.5A
Min.
10
8
80
Typ.
9
15
- 0.15
- 0.15
- 10
1
1.8
1.8
1.6
0.4
2.1
Max.
35
20
30
1.5
-1
-1
7
1.7
2.3
2.3
2.2
1
2.8
Unit
V
mA
mA
A
µA
µA
mV
µV/oC
dB
V
V
V
V
V
V
2/5
Page 2

APPLICATION CIRCUITS
AC COUPLING
R5
VREF
2.2V
+ VS
CF
26
3
1
POWER
AMPLIFIER
7
TDA8177
4
FLYBACK
GENERATOR
THERMAL
PROTECTION
R3
5
R4
CL
R2
R1
TDA8177
DC COUPLING
R5
VREF+ Vertical
Position
Adjustment
VREF-
+ VS
CF
26
3
1
POWER
AMPLIFIER
7
TDA8177
-VEE
4
FLYBACK
GENERATOR
5
THERMAL
PROTECTION
R2
R1
3/5
Page 3

TDA8177
Figure 1 : Output Transistors SOA
(for secondary breakdown)
IC (A)
10
@ Tcase = 25°C
1
10-1
10-2
1
t = 1ms
t = 10ms
t = 100ms
10
VCE (V)
Figure 2 : Secondary Breakdown Temperature
Derating Curve
(ISB = secondary breakdown current)
ISB (%)
100
90
80
70
60 Tcase (°C)
102 25 50 75 100 125
4/5
Page 4
Part Number TDA8177
Manufactur ST Microelectronics
Description VERTICAL DEFLECTION BOOSTER
Total Page 5 Pages
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