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STV7778S Datasheet(PDF) 7 Page - STMicroelectronics

Part # STV7778S
Description  DEFLECTION PROCESSOR FOR MULTISYNC MONITOR
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STV7778S Datasheet(HTML) 7 Page - STMicroelectronics

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B+ SECTION
Operating Conditions
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
EAOI
Maximum Error Amplifier Output Current
Sourced by Pin 41
Sunk by Pin 41
0.5
2
mA
mA
FeedRes
Minimum Feedback Resistor
Resistor between Pins 40
and 41
5k
Ω
Electrical Characteristics (VCC = 12V, Tamb = 25°C)
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
OLG
Error Amplifier Open Loop Gain
At low frequency
(see Note 1)
85
dB
UGBW
Unity Gain Bandwidth
(see Note 1)
6
MHz
IRI
Regulation Input Bias Current
Current sourced by Pin 40
(PNP base)
0.2
µA
EAOI
Maximum Guaranted Error Amplifier
Output Current
Current sourced by Pin 41
Current sink by Pin 41
0.5
2
mA
mA
CSG
Current Sense Input Voltage Gain
Pin 42
3
MCEth
Max Curent Sense Input Threshold Voltage
Pin 42
1.2
V
ISI
Current Sense Input Bias Current
Current sunk by Pin 42
(NPN base)
1
µA
Tonmax
Maximum External Power Transistor on Time
% of H-period,
@ f0 = 27kHz
75
%
B+OSV
B+ Output Low Level Saturation Voltage
V22 with I22 = 10mA
0.25
V
IVref
Internal Reference Voltage
On error amp (+) input for
V39 = 4V
4.9
V
VREFADJ
Internal Reference Voltage Adjustment
2V < V39 < 6V
±14
%
EAST WEST PARABOLA GENERATOR
Electrical Characteristics (VCC = 12V, Tamb = 25°C)
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
Vsym
Parabola Symetry Adjustment Capability
(for Keystone Adjustment ; with Pin 38)
See Figure 2 ;
Internal voltage
V38 = 2V
V38 = 4V
V38 = 6V
3.2
3.5
3.8
V
Kadj
Keystone Adjustment Capability
B/A ratio
A/B ratio
See Figure 2 ; V37 = 4V
V38 = 2V
V38 = 6V
2.3
2.0
Paramp
Parabola Amplitude Adjustment Capability
Maximum Amplitude on Pin 36
Maximum Ratio between Max and Min
V38 = 4.3V, V28 = 2V
V37 = 2V
2V < V37 < 6V
3.3
2.4
3.8
3
4.3
V
STV7778S
7/11


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