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參數(shù)資料
| 型號： | TDA3653B/N2,112 |
| 廠商： | NXP Semiconductors |
| 文件頁數(shù)： | 8/13頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC VERT DEFLECT 9-SIL |
| 標(biāo)準(zhǔn)包裝： | 22 |
| 系列： | * |
| 類型： | * |
| 應(yīng)用： | * |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 9-SIP 裸露接片 |
| 供應(yīng)商設(shè)備封裝： | 9-SIL MPF |
| 包裝： | 管件 |
| 其它名稱： | 935084350112 TDA3653BU TDA3653BU-ND |
March 1991
4
Philips Semiconductors
Product specication
Vertical deection and guard circuit (90)
TDA3653B
TDA3653C
FUNCTIONAL DESCRIPTION
Output stage and protection circuit
Pin 5 is the output pin. The supply for the output stage is fed to pin 6 and the output stage ground is connected to pin 4.
The output transistors of the class-B output stage can each deliver 0.75 A maximum.
The maximum voltage for pin 5 and 6 is 60 V.
The output power transistors are protected such that their operation remains within the SOAR area. This is achieved by
the co-operation of the thermal protection circuit, the current-voltage detector, the short-circuit protection and the special
measures in the internal circuit layout.
Driver and switching circuit
Pin 1 is the input for the driver of the output stage. The signal at pin 1 is also applied via external resistors to pin 3 which
is the input of a switching circuit. When the flyback starts, this switching circuit rapidly turns off the lower output stage
and so limits the turn-off dissipation. It also allows a quick start of the flyback generator.
External connection of pin 1 to pin 3 allows for applications in which the pins are driven separately.
Flyback generator
During scan the capacitor connected between pins 6 and 8 is charged to a level which is dependent on the value of the
resistor at pin 8 (see Fig.1).
When the flyback starts and the voltage at the output pin (pin 5) exceeds the supply voltage, the flyback generator is
activated.
The supply voltage is then connected in series, via pin 8, with the voltage across the capacitor during the flyback period.
This implies that during scan the supply voltage can be reduced to the required scan voltage plus saturation voltage of
the output transistors.
The amplitude of the flyback voltage can be chosen by changing the value of the external resistor at pin 8.
It should be noted that the application is chosen such that the lowest voltage at pin 8 is > 2.5 V, during normal operation.
Guard circuit
When there is no deflection current and the flyback generator is not activated, the voltage at pin 8 reduces to less than
1.8 V. The guard circuit will then produce a DC voltage at pin 7, which can be used to blank the picture tube and thus
prevent screen damage.
Voltage stabilizer
The internal voltage stabilizer provides a stabilized supply of 6 V to drive the output stage, which prevents the drive
current of the output stage being affected by supply voltage variations.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA3653BU | 功能描述:視頻 IC VERTICLE OUTPUT RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
| TDA3653C | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Vertical deflection and guard circuit 90° |
| TDA3654 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Vertical deflection and guard circuit 110∑ |
| TDA3654Q | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Vertical deflection and guard circuit 110° |
| TDA3661 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Very low dropout voltage/quiescent current adjustable voltage regulator |
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