TEA2037A View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'TEA2037A' PDF : 15 Pages View PDF
TEA2037A
Table 12. Frame Output (Pin 8)
Symbol
Parameter
LV8A
LV8B
Saturation Voltage to Ground (V7 = 30V)
I8 = 0.1
I8 = 1A
HV8A
HV8B
Saturation Voltage to V7 (V7 = 30V)
I8 = –0.1
I8 = –1A
FV8A
FV8B
Saturation Voltage to V7 in Flyback Mode (V8 > V7)
I8 = 0.1
I8 = 1A
Min. Typ. Max. Unit
0.06 0.6
V
0.37
1
V
1.3 1.6
V
1.7 2.4
V
1.6 2.1
V
2.5 4.5
V
Table 13. Flyback Generator (Pin 2 and 3)
Symbol
Parameter
Min. Typ. Max. Unit
Flyback Transistor on (output = high state) (V2 = 30V)
F2DA
F2DB
) FSVA
t(s FSVB
duc FCI
V3/2 with I3 → 2 = 0.1A
I3 → 2 = 1A
V2/3 with I3 → 2 = 0.1
I3 → 2 = 1A
Flyback Transistor off (output = V7 - 8V) (V7 = V2 = 30V)
Leakage Current Pin 2
1.5 2.1
V
3.0 4.5
V
0.8 1.1
V
2.2 4.5
V
170 µA
Pro The TEA2037A performs all the video and power
te functions required to provide signals for the direct
drive of the line darlington and frame yoke.
le It contains:
so – A shunt regulator
b – A synchronization separator
O – An integrated frame separator without external
- components
) – A saw-tooth generator for the frame
t(s – A power amplifier for direct drive of frame yoke
Obsolete Produc (short circuit protected)
– An open collector output for the line darlington
drive
– A line phase detector and a voltage control
oscillator.
The slice level of sync-separation is fixed by value
of the external resistors R1 and R2. VR is an inter-
nally fixed voltage.
The sync-pulse allows the discharge of the capac-
itor by a 2 x 1 current. A line sync-pulse is not able
to discharge the capacitor under VZ/2. A frame
sync pulse permits the complete discharge of the
capacitor, so during the frame sync-pulse Q3 and
Q4 provide current for the other parts of the circuit.
5/14
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