VIPER37HE datasheet(8/35 Pages) STMICROELECTRONICS

8 / 35 page

Electrical data

VIPER37

8/35

Doc ID 022218 Rev 1

Table 7.

Supply section

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

Voltage

VDRAIN_START

Drain-source start voltage

100

IDDch

Startup charging current

VDRAIN = 120 V,

VBR = GND, VFB = GND,

VDD = 4 V

-2

-3

-4

VDRAIN = 120 V,

VBR = GND, VFB = GND,

VDD = 4 V after fault.

-0.4

-0.6

-0.8

VDD

Operating voltage range

After turn-on

8.5

23.5

VDDclamp

VDD clamp voltage

IDD = 20 mA

23.5

VDDon

VDD startup threshold

VDRAIN = 120 V,

VBR = GND, VFB = GND

VDDoff

VDD undervoltage

shutdown threshold

7.5

8.5

VDD(RESTART)

VDD restart voltage

threshold

VDRAIN = 120 V,

VBR = GND, VFB = GND

44.5

Current

IDD0

Operating supply current,

not switching

VFB = GND, FSW = 0 kHz,

VBR = GND, VDD = 10 V

0.9

IDD1

Operating supply current,

switching

VDRAIN = 120 V,

FSW = 60 kHz

2.5

VDRAIN = 120 V,

FSW = 115 kHz

3.5

IDD_FAULT

Operating supply current,

with protection tripping

VDD = 10 V

400

µA

IDD_OFF

Operating supply current

with VDD < VDD_OFF

VDD = 7 V

270

µA

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