STV7778S データシートの表示（PDF） - STMicroelectronics

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STV7778S

DEFLECTION PROCESSOR FOR MULTISYNC MONITOR

STMicroelectronics 

STV7778S

B+ SECTION

Operating Conditions

Symbol

Parameter

EAOI Maximum Error Amplifier Output Current

FeedRes Minimum Feedback Resistor

Test conditions

Sourced by Pin 41

Sunk by Pin 41

Resistor between Pins 40

and 41

Min. Typ. Max. Unit

0.5 mA

2 mA

5

kΩ

Electrical Characteristics (VCC = 12V, Tamb = 25°C)

Symbol

Parameter

OLG Error Amplifier Open Loop Gain

UGBW

IRI

Unity Gain Bandwidth

Regulation Input Bias Current

EAOI

CSG

MCEth

ISI

Maximum Guaranted Error Amplifier

Output Current

Current Sense Input Voltage Gain

Max Curent Sense Input Threshold Voltage

Current Sense Input Bias Current

Tonmax Maximum External Power Transistor on Time

B+OSV

IVref

VREFADJ

B+ Output Low Level Saturation Voltage

Internal Reference Voltage

Internal Reference Voltage Adjustment

Test conditions

At low frequency

(see Note 1)

(see Note 1)

Current sourced by Pin 40

(PNP base)

Current sourced by Pin 41

Current sink by Pin 41

Pin 42

Pin 42

Current sunk by Pin 42

(NPN base)

% of H-period,

@ f0 = 27kHz

V22 with I22 = 10mA

On error amp (+) input for

V39 = 4V

2V < V39 < 6V

Min.

0.5

2

Typ.

85

6

0.2

3

1.2

1

75

0.25

4.9

±14

Max.

Unit

dB

MHz

µA

mA

mA

V

µA

%

V

V

%

EAST WEST PARABOLA GENERATOR

Electrical Characteristics (VCC = 12V, Tamb = 25°C)

Symbol

Parameter

Test conditions

Vsym

Parabola Symetry Adjustment Capability

(for Keystone Adjustment ; with Pin 38)

Kadj

Paramp

Keystone Adjustment Capability

B/A ratio

A/B ratio

Parabola Amplitude Adjustment Capability

Maximum Amplitude on Pin 36

Maximum Ratio between Max and Min

See Figure 2 ;

Internal voltage

V38 = 2V

V38 = 4V

V38 = 6V

See Figure 2 ; V37 = 4V

V38 = 2V

V38 = 6V

V38 = 4.3V, V28 = 2V

V37 = 2V

2V < V37 < 6V

Min. Typ. Max. Unit

V

3.2

3.5

3.8

2.3

2.0

3.3 3.8 4.3 V

2.4 3

7/11

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