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| TDA4841PS Datasheet, PDF (44/60 Pages) NXP Semiconductors – I2C-bus autosync deflection controller for PC monitors | |||
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Philips Semiconductors
I2C-bus autosync deï¬ection controller for
PC monitors
Product speciï¬cation
TDA4841PS
APPLICATION INFORMATION
handbook, full pagewidth
D1
1 horizontal
flyback pulse
C1
VHPLL2
2 VHDRV
SOFT START
2.5 V OTA
SQ
RQ
DISCHARGE
VCC
Vi
R6(1)
6
3 VBDRV
L
D2
INVERTING
BUFFER
TR1
HORIZONTAL
OUTPUT
STAGE
5
VBIN
R1
R2 C2
R3
3
4
VBOP
4 VBSENS
C4
CBOP
>10 nF
R5
R4
MGM080
EWDRV
For f < 50 kHz and C2 < 47 nF calculation formulas and behaviour of the OTA are the same as for an OP. An exception is the limited output current at
BOP (pin 3). See Chapter âCharacteristicsâ, subheading âB+ control section; see Figs 25 and 26â.
(1) The recommended value for R6 is 1 kâ¦.
a. Feedback mode application.
handbook1, fulhl poargizeownidttahl
flyback pulse
2 VHDRV
3 VBDRV
VBSENS = VBOP
4 VBSENS
ton
td(BDRV)
toff(min)
VRESTART(BSENS)
VSTOP(BSENS)
MBG600
b. Waveforms for normal operation.
c. Waveforms for fault condition.
Fig.25 Application and timing for feedback mode.
1999 Oct 25
44
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