TDA1872A ,Vertical Deflection CircuitABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
Vs Supply Voltage at Pin 14 35 V
Vs, V2 F ..
TDA1872A ,Vertical Deflection Circuit= G -11'IOM O
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TDA1872A
VERTICAL DEFLECTION CIRCUIT
SYNCHRONIZATIO ..
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TDA1872A
Vertical Deflection Circuit
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N/ir mmmmmmgwm
TDA1872A
VERTICAL DEFLECTION CIRCUIT
u SYNCHRONIZATION CIRCUIT
n PRECISION OSCILLATOR AND RAMP GENE-
u 50/60Hz SYNCHRONIZATION IDENTIFICA-
TION CIRCUIT WITH AUTOMATIC AMPLI-
TUDE CORRECTION AND STATUS OUTPUT
a POWER OUTPUT AMPLIFIER WITH HIGH
CURRENT CAPABILITY
n FLYBACK GENERATOR
u VOLTAGE REGULATOR
u PRECISION BLANKING PULSE GENERATOR
u THERMAL SHUT DOWN PROTECTION
a CRT PROTECTION CIRCUIT
DESCRIPTION
The TDA1872A is a monolithic integrated circuit in
15 lead MULTIWATT package. It is a full perfor-
mance and very efficient vertical deflection circuit in-
tended for direct drive of the yoke of 110 degree
color TV picture tubes.
It offers a wide range of applications also in porta-
ble CTVs, BW TVs, monitors and displays.
MULTIWATT
(15-lead)
ORDER CODE , TDA1872A
BLOCK DIAGRAM
A 4()Hls
- .___]
GENERATOR
r-----' OSCILLATO‘
BLANKING T l
OUI C I
C , 9--
13 " I
BLANK o
GE’IRAIOR v LIAGE mm”
AND cm " t - REGULATOR F-- GENERATOR F-,
PROTECTION
SOISONI
BUF'ER
V SYNC Snot
YMEQMAL
PROHK TION
Ic, ii
MEIGHT d
Tr:"' -12tf
5'9890
January 1989
TDA1872A
PIN CONNECTION (top view)
_~ul~u|<7‘\law
L (ily
Z s-ené
Tab connected to pm 8
FLVBACK
SUPPLY
BLANKING OUTPUT
AMPLIFIER 1NPUT(-)
5WNCH, STATUS OUTPUT
RAMP OUTPUT
RAMP GENERATOR
GROUND
HEIGHT ADJUSTMENT
OSCILLATOR .
SYNC. INPUT
OSCILLATOR
OSCILLA‘OR
AMPLIFIER SUPPLY
AMPLIFIER OUTPUT
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
Vs Supply Voltage at Pin 14 35 V
V1, V2 Flyback Peak Voltage 60 V
Vs Synchronous Input Voltage 20 V
V12 Power Amplifier Input Voltage - 10 To Vs V
V13 Voltage at pin 13 Vs
lo Output Current (non repetitive at t = 20ms) 3 A
lo Output Peak Current at f = 50Hz t > 10ps 2 A
Io Output Peak Current at f = 50Hz tny s 1.5ms 3.5 A
I15 Pin 15 Peak to Peak Flyback Current at f = 50Hz tn, < 1.5ms 3 A
I15 Pin15 DC Current at V1 < V14 100 mA
Ptat Maximum Power Dissipation at Tcase s 60°C 30 W
Tstg Storage Temperature - 40 to 150 (
T} Junction Temperature 0 to 150 (
THERMAL DATA
R1hj.case Thermal Junction-case Max 3 °C/W
R1hj.amb Thermal Junction-ambient Max 40 °C/W
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