STV6889 Ver la hoja de datos (PDF) - STMicroelectronics
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Fabricante
STV6889 Datasheet PDF : 56 Pages
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STV6889
6.4 Horizontal section
Symbol
PLL1
IRO
CCO
fHO
fHO(0)
fHOCapt
Table 1. Horizontal section ( Vcc = 12V, Tamb = 25°C)
Parameter
Test Conditions
Value
Units
Min. Typ. Max.
Current load on RO pin
1.5 mA
Capacitance on CO pin
390
pF
Frequency of hor. oscillator
Free-running frequency of hor. oscill. (1) RRO=5.23kW, CCO=820pF 27
Hor. PLL1 capture frequency (4)
fHO(0) = 28.5kHz
29
150 kHz
28.5 29.9 kHz
122 kHz
-f-H---D-O--f--(H-0---O)---×(--0-D--)--T--
Temperature drift of free-running freq. (3)
-150
ppm/°C
DfHO/DVHO
VHO
VHOThrfr
Average horizontal oscillator sensitivity
H. oscill. control voltage on pin HPLL1F
Threshold on H. oscill. control voltage on
HPLL1F pin for tracking of EW with freq.
fHO(0) = 28.5kHz
VRefO=8V
VRefO=8V
20.2
kHz/V
1.4
6.0
V
5.0
V
VHPosF
Control voltage on HPosF pin
VHOThrLo
VHOThrHi
PLL2
Bottom of hor. oscillator sawtooth(6)
Top of hor. oscillator sawtooth(6)
HPOS (Sad01h):
11111111b
10000000b
00000000b
2.8
V
3.4
V
4.0
V
1.6
V
6.4
V
RIn(HFly) Input impedance on HFly input
V(HFly) >VThrHFly (2)
300 500 700 W
IInHFly
Current into HFly input
At top of H flyback pulse
5
mA
VThrHFly
Voltage threshold on HFly input
0.5 0.6
V
VS(0)
H flyback lock middle point(6)
No PLL2 phase modula-
tion
4.0
V
VBotHPLL2C
VTopHPLL2C
Low clamping voltage on HPLL2C pin(5)
High clamping voltage on HPLL2C pin(5)
1.6
V
4.0
V
tph(min) /TH
Min. advance of H-drive OFF before
middle of H flyback(7)
Null asym. correction
0
%
tph(max) /TH
Max. advance of H-drive OFF before
middle of H flyback(8)
Null asym. correction
44
%
H-drive output on pin HOut
IHOut
Current into HOut output
tHoff /TH
Duty cycle of H-drive signal
Output driven LOW
fH = 31kHz;
HDUTY (Sad00h):
x1111111b
x0000000b
Soft-start/Soft-stop value
30 mA
27
%
65
%
85
%
10/56
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