Rev. C 03/22

18

PFS5173-5178/5274

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Parameter

Symbol

Conditions

SOURCE = 0 V, V

CC = 12 V,

T

J = -40 to +125 °C

(See Note C)

Min

Typ

Max

Units

VCC parameters PFS527xF Parts (Parts without high voltage start-up power supply circuit)

VCC Operating Range

VCC

0 °C < T

J < 100 °C

7.0

12.0

35.0

V

Series Regulator PFS527XF Parts

REFERENCE Pin Voltage

VDR Pin Voltage

V

REF

V

VDR

VCC > 6.3 V

0°C < T

J < 100 °C

No external load applied on REF and VDR

5.25

V

VDR Pin Start-Up

Threshold

V

VDR(UV+)

0 °C < T

J < 100 °C

5.0

V

VDR UVLO Hysteresis

V

VDR(UV)(HYST)

50

mV

VCC Parameters PFS517xF Parts (Parts with high voltage start-up power supply circuit)

VCC Operating Range

VCC

0 °C < T

J < 100 °C

7.0

12.0

35.0

V

VCC Takes Over VDR and

Reference Supply From

High-Voltage Regulator

From the D Pin

VCC

TO+

VD > 20 V, VCC rising from 0 V

T

J = 25 °C

6.3

V

Series Regulator PFS517xF Parts

REFERENCE Pin Voltage

VDR Pin Voltage (VDR

and REFERENCE pin

Supplied From VCC Pin

V

REF(VCC)

V

VDR(VCC)

VCC > 6.3 V, VD = 0 V to 400 V

0 °C < T

J < 100 °C

5.25

V

REFERENCE Pin Voltage

VDR Pin Voltage (VDR

and REFERENCE Pin

Supplied Through

High-Voltage Regulator

from the D pin)

V

REF(VD)

V

VDR(VD)

VCC = 0 V, VD > 20 V

0 °C < T

J < 100 °C

5.15

V

VDR Pin Start-up

Threshold

V

VDR(UV+)

0 °C < T

J < 100°C

See Note A

5.0

V

Reference VDR UVLO

hysteresis

V

VDR(VH)(HYST)

See Note A

50

mV

Time from V

REF > VREFUV+

Until Device Commences

Switching

t

RESET

Assumes V pin is above brown-in threshold.

See Note A

1.6

3

ms

Valley Sensing

Valley Sensing

Positive Threshold

V

VS1

Voltage on the VS pin rising

T

J = 25 °C

0.88

V

Valley Sensing

Negative Threshold

V

VS2

Voltage on the VS pin falling

T

J = 25 °C

0.48

V