REV. SEP 17, 2003

Page 1 of 11

PSA Series Extended Data Sheet

Positive Switching Regulator

s (Benign)

Input voltage up to 60 V DC

Single output of 3.3...24 V DC

No input to output isolation

• High efficiency up to 93%

• Wide input voltage range

• Low input to output differential voltage

• Very good dynamic properties

• Input undervoltage lock-out

• Parallel configurations possible

• Continuous no-load and short-circuit proof

• No derating

Table of Contents

Page

Summary ......................................................................... 1

Type Survey and Key Data .............................................. 1

Type Key .......................................................................... 2

Functional Description ..................................................... 2

Electrical Input Data ........................................................ 3

Electrical Output Data ..................................................... 4

Electromagnetic Compatibility (EMC) ............................. 6

Page

Immunity to Environmental Conditions ........................... 6

Mechanical Data .............................................................. 7

Safety and Installation Instructions ................................. 7

Description of Options ..................................................... 9

Accessories ................................................................... 10

EC Declaration of Conformity ....................................... 11

Summary

The PSA series of positive switching regulators is de-

signed as power supply modules for electronic systems.

Their major advantages include a high level of efficiency

that remains virtually constant over the entire input range,

high reliability, low ripple and excellent dynamic response.

Safety according to IEC/EN 60950

Modules with input voltages up to 60 V are specially de-

signed for secondary switched and battery driven applica-

tions. The case design allows operation at nominal load up

to 50°C without additional cooling.

Type Survey and Key Data

Table 1: Type survey

Output

Output

Input

Input

Type

Options

voltage

current

voltage range

voltage

designation

package

η

5.1

2

8...40

20

75

PSA 5A2-2

iRY

5.1

5

7...35

20

83

PSA 5A5-2

12

3

15...40

20

89

PSA 123-2

15

3

19...40

30

90

PSA 153-2

24

2.5

29...60

40

93

PSA 242.5-2

70

2.8"

50

2.0"

25

1.0"