NCP12400

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6

Table 5. ELECTRICAL CHARACTERISTICS

(For typical values TJ = 25°C, for min/max values TJ = −40°C to +125°C, VHV = 125 V, VCC = 11 V unless otherwise noted)

Characteristics

Unit

Max

Typ

Min

Symbol

Test Condition

SUPPLY

VCC decreasing level at which the internal

logic resets

VCC(reset)

4.8

7.0

7.7

V

VCC level for ISTART1 to ISTART2 transition

VCC(inhibit)

1.0

2.1

3.0

V

Internal current consumption

DRV open, VFB = 3 V, 65 kHz

DRV open, VFB = 3 V, 100 kHz

Cdrv = 1 nF, VFB = 3 V, 65 kHz

Cdrv = 1 nF, VFB = 3 V, 100 kHz

Skip or before start−up

Fault mode (fault or latch)

Off−mode

ICC1

ICC2

ICC3

ICC4

ICC5

1.0

1.1

1.5

2.0

400

300

−

1.3

1.4

2.1

2.6

500

430

25

2.0

2.1

2.9

3.4

650

550

−

mA

mA

mA

mA

mA

mA

mA

BROWN−OUT

Brown−out thresholds (option A)

VHV going up

VHV going down

VHV(start)

VHV(stop)

210

194

229

211

248

228

V

Brown−out thresholds (option B)

VHV going up

VHV going down

VHV(start)

VHV(stop)

102

94

111

103

120

116

V

Brown−out thresholds (option BAHAB)

VHV going up

VHV going down

VHV(start)

VHV(stop)

93

90

103

100

113

110

V

Brown−out thresholds (option C)

VHV going up

VHV going down

VHV(start)

VHV(stop)

87

85

95

93

103

101

V

Brown−out thresholds (option E)

VHV going up

VHV(start)

90

100

110

V

Timer duration for line cycle drop−out

(depending on the version)

tHV

42

48

64

73

86

98

ms

X2 DISCHARGE

Comparator hysteresis observed at HV pin

VHV(hyst)

2.0

3.0

4.0

V

HV signal sampling period

tsample

−

1.0

−

ms

Timer duration for no line detection

tDET

21

32

43

ms

Discharge timer duration

tDIS

21

32

43

ms

Shunt regulator voltage at VCC pin during X2

discharge event

VCC(dis)

10.0

11.0

12.0

V

OSCILLATOR

Oscillator frequency 65 kHz version

Oscillator frequency 100 kHz version

fOSC

61

94

65

100

69

110

kHz

Maximum duty−ratio (corresponding to

maximum on time at maximum switching

frequency)

DMAX

75

80

85

%

Frequency jittering amplitude, in percentage

of FOSC

Ajitter

±3.0

±4.0

±5.0

kHz

Frequency jittering modulation frequency

Fjitter

85

125

165

Hz

FREQUENCY FOLDBACK

Feedback voltage threshold below which

frequency foldback starts

TJ = 25°C

VFB(foldS)

2.4

2.5

2.6

V

Feedback voltage threshold below which

frequency foldback is complete

TJ = 25°C

VFB(foldE)

2.05

2.15

2.25

V

Minimum switching frequency

VFB = Vskip(in) + 0.1

fOSC(min)

25

28

31

kHz

6. Guaranteed by design.

7. CS pin source current is a sum of Ibias and IOPC, thus at VHV = 125 V is observed the Ibias only, because IOPC is switched off.