TDA4856 데이터 시트보기 (PDF) - Philips Electronics
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TDA4856 Datasheet PDF : 58 Pages
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Philips Semiconductors
I2C-bus autosync deflection controller for
PC monitors
Product specification
TDA4856
SYMBOL
PARAMETER
CONDITIONS
MIN.
BSENS DISCHARGE CIRCUIT: PIN BSENS
VSTOP(BSENS)
discharge stop level
Idch(BSENS)
Vth(BSENS)(restart)
CBSENS(min)
discharge current
threshold voltage for restart
minimum value of capacitor at
BSENS (pin 4)
capacitive load;
IBSENS = 0.5 mA
VBSENS > 2.5 V
fault condition
0.85
4.5
1.2
2
Internal reference, supply voltage, soft start and protection
VCC(stab)
ICC
ICC(stb)
PSRR
VCC(blank)
VCC(blank)(min)
Von(VCC)
Voff(VCC)
external supply voltage for
complete stabilization of all
internal references
supply current
standby supply current
power supply rejection ratio of
internal supply voltage
supply voltage level for
activation of continuous
blanking
minimum supply voltage level
for function of continuous
blanking
supply voltage level for
activation of HDRV, BDRV,
VOUT1, VOUT2 and
HUNLOCK
supply voltage level for
deactivation of BDRV, VOUT1,
VOUT2 and HUNLOCK; also
sets register SOFTST
9.2
−
STDBY = 1; VPLL2 < 1 V; −
3.5 V < VCC < 13.2 V
f = 1 kHz
50
VCC decreasing from 12 V 8.2
VCC decreasing from 12 V 2.5
VCC increasing from below 7.9
typical 8.1 V
VCC decreasing from
7.7
above typical 8.3 V
THRESHOLDS DERIVED FROM HPLL2 VOLTAGE
VHPLL2(blank)(ul) upper limit for continuous
−
blanking
VHPLL2(bduty)(ul) upper limit for variation of
−
BDRV duty cycle
VHPLL2(bduty)(ll)
lower limit for variation of BDRV
−
duty cycle
VHPLL2(hduty)(ul) upper limit for variation of
−
HDRV duty cycle
VHPLL2(hduty)(ll)
lower limit for variation of HDRV
−
duty cycle
VHPLL2(stb)(ul)
upper limit for standby voltage
−
TYP.
1.0
6.0
1.3
−
−
68
9
−
8.6
3.5
8.3
8.1
4.6
4.0
3.2
3.2
1.8
1
MAX. UNIT
1.15 V
7.5
mA
1.4
V
−
nF
13.2 V
−
mA
−
mA
−
dB
9.0
V
4.0
V
8.7
V
8.5
V
−
V
−
V
−
V
−
V
−
V
−
V
2003 Sep 30
25
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