SMP402

D

1/96

10

-50

-10

90

12

72

1.5

2.5

1

1.5

4.75

5.25

1

1.5

I

DSS

BV

DSS

V

IN

I

IN

V

BIAS

I

BIAS

V

I

V

V

OUTPUT (cont.)

OFF-State

Current

Breakdown

Voltage

HV Regulator

Voltage

Off-line Supply

Current

V

Voltage

V

Current

µA

V

V

mA

V

mA

SUPPLY

NOTES:

1. At low output currents (< 20 mA), the part may operate in blocking oscillation mode, resulting in large output ripple.

2. Applying >3.5 V to the EA IN pin activates an internal test circuit that turns on the output switch continuously.

Destruction of the part can occur if the output of the SMP402 is connected to a high voltage power source when the

test circuit is activated.

Figure 7. Switching Time Test Circuit.

PI-1456-042695

R1

1.2 M

Ω

100 nF

100 nF

20.5 k

Ω

120 pF

470

µH

100 nF

82

µF

75 k

Ω

1 nF

240 k

Ω

24.9 k

Ω

152

Ω

U1

UF4002

1.2 M

Ω

48 VDC

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

8

C1

Conditions

(Unless Otherwise Specified)

Parameter

Symbol

V

Min

Typ

Max

Units

R

R