TDA4853 datasheet(44/60 Pages) PHILIPS

Part #	TDA4853

Description	I2C-bus autosync deflection controllers for PC/TV monitors

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Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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44 / 60 page

1999 Jul 13

44

Philips Semiconductors

Product speciﬁcation

I2C-bus autosync deﬂection controllers for

PC/TV monitors

TDA4853; TDA4854

Fig.27 PLL2 soft start sequence and PLL2 soft-down sequence by external DC current.

a. PLL2 soft start sequence by external DC current, if VCC > 8.6 V.

b. PLL2 soft-down sequence by external DC current, if VCC > 8.6 V.

(1) HDRV, BDRV, VOUT2 and VOUT1 are floating for VCC < 8.6 V.

handbook, full pagewidth

VHPLL2

continuous blanking off

PLL2 enabled

frequency detector enabled

HDRV/HFLB protection enabled

4.6 V

3.3 V

1.7 V

time

HDRV duty cycle begins to increase

BDRV duty cycle begins to increase

HDRV duty cycle has reached nominal value

3.0 V

BDRV duty cycle has reached nominal value

MHB108

handbook, full pagewidth

VHPLL2

continuous blanking (pin 16 and 17) activated

PLL2 disabled

frequency detector disabled

HDRV/HFLB protection disabled

4.6 V

3.3 V

1.7 V

time

HDRV floating

BDRV duty cycle begins to decrease(1)

3.0 V

BDRV floating

HDRV duty cycle begins to decrease(1)

MHB109

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TDA4853 Datasheet(PDF) 44 Page - NXP Semiconductors

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