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TEA2028B fiches techniques PDF

ST Microelectronics - SWITCH MODE POWER SUPPLY PRIMARY CIRCUIT

Numéro de référence TEA2028B
Description SWITCH MODE POWER SUPPLY PRIMARY CIRCUIT
Fabricant ST Microelectronics 
Logo ST Microelectronics 





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TEA2028B fiche technique
TEA2028B
COLOR TV SCANNING AND POWER SUPPLY PROCESSOR
DEFLECTION
. CERAMIC 500kHz RESONATOR FRE-
QUENCY REFERENCE
. NO LINE AND FRAME OSCILLATOR AD-
JUSTMENT REFERENCE
. DUAL PLL FOR LINE DEFLECTION
. HIGH PERFORMANCE SYNCHRONIZATION
. SUPER SANDCASTLE OUTPUT
. FRAME BLANKING WITH SAFETY CIRCUIT
. VIDEO IDENTIFICATION CIRCUIT
. AUTOMATIC 50/60Hz STANDARD IDENTIFI-
CATION
. EXCELLENT INTERLACING CONTROL
. SPECIAL PATENTED FRAME SYNCHRO DE-
VICE FOR VCR OPERATION
. FRAME SAW-TOOTH GENERATOR
SMPS CONTROL
. ERROR AMPLIFIER AND PHASE MODULA-
TOR
. SYNCHRONIZATION WITH HORIZONTAL
DEFLECTION
. SECURITY CIRCUIT AND START-UP PROC-
ESSOR
. OUTPUT PULSES ARE SENT TO THE PRI-
MARY SMPS IC TEA2261 THROUGH A LOW
COST SYNCHRO PULSE TRANSFORMER
PIN CONNECTIONS
DESCRIPTION
The TEA2028B is a complete (horizontal and ver-
tical) deflection processor with secondary to pri-
mary SMPS control for color TV sets.
DIP28
(Plastic Package)
ORDER CODE : TEA2028B
LINE MONOSTABLE CAPACITOR
SAFETY FRAME BLANKING INPUT
FRAME SAW-TOOTH OUTPUT
FRAME BLANKING OUTPUT
FRAME RAMP GENERATOR
GROUND POWER
SWITCH MODE POWER SUPPLY OUTPUT
V CC
S.M.P.S. INPUT REGULATION
HORIZONTAL OUTPUT
S. SANDCASTLE OUTPUT
HORIZONT AL FLYBACK INPUT
HORIZO NTAL SAW-TOOTH
CURRENT REFERENCE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28 SAFETY INPUT
27 VIDEO INPUT
26 H. SYNCHRO CAPACITOR (tip level)
25 VIDEO IDENTIFICATION CAPACITOR
24 MUTING + 50/60Hz IDENT. OUTPUT
23 V.C.R. INPUT
www.DataSheet4U.com22 PHASE COMPARATOR Φ1 CAPACITOR
21 GROUND SUBSTRAT
20 FRAME SYNCHRO ADJ USTMENT CAPACITOR
19 V.C.O. INPUT
18 V.C.O. OUTPUT
17 V.C.O. 90° REF.
16 PHASE COMPARATOR Φ2 CAPACITOR
15 STARTING AND SAFETY CAPACITOR
August 1993
www.DataSheet4U.com
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