SMP402SC Просмотр технического описания (PDF) - Power Integrations, Inc

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Компоненты Описание

производитель

SMP402SC

1-Watt Buck Regulator IC 20-72 VDC Input Non-isolated DC Output

Power Integrations, Inc 

SMP402

Parameter

OUTPUT (cont.)

Symbol

Conditions

(Unless Otherwise Specified)

VIN = 48 V, VBIAS = 5 V, GNDs = 0 V

REXT = 20.5 kΩ, CEXT = 120 pF

RS+, RS- = 1.2 MΩ, Tj = 0 to 120°C

OFF-State

Current

IDSS

VIN = 72 V, OUT = 0 V, TA = 120°C

Min

-50

Typ

-10

Max

Units

µA

Breakdown

Voltage

BV

DSS

I

OUT

=

-250

µA,

T

A

=

25°C

90

V

SUPPLY

HV Regulator

Voltage

Off-line Supply

Current

VBIAS Supply

Voltage

VBIAS Supply

Current

V

IN

I

IN

VBIAS

I

BIAS

V = A GND

BIAS

VBIAS = 5 V

12

72

V

1.5

2.5

mA

1

1.5

4.75

5.25

V

1

1.5

mA

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.

470 µH

100 nF

48 VDC

R1

1.2 MΩ

1.2 MΩ

C1

U1

1

16

2

15

3

14

4

13

5

12

6

11

7

10

8

9

20.5 kΩ

120 pF

75 kΩ

UF4002

82 µF

100 nF

152 Ω

1 nF

240 kΩ

100 nF

24.9 kΩ

Figure 7. Switching Time Test Circuit.

10 D

1/96

PI-1456-042695

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