3

WPN30R

REV A

6/02

Product: www.cdpowerelectronics.com

15V

12V

5V

3V

OUTPUT RIPPLE VS. TEMPERATURE

-40

-15

25

65

110

Tcase (C)

TRIM RESISTOR VS. OUTPUT VOLTAGE CHANGE

50

45

40

35

30

25

20

15

10

5

0

10

9

8

76

5

4

32

1

Percentage Change In Output Voltage

5

5

3

-trim +trim

10

5

0

-5

-10

-40

-15

25

65

110

100% Load

20% Load

Tcase (C)

-10

-5

0

5

10

Percentage Change In Output Voltage

100

90

80

70

60

50

40

30

20

10

0

10

9

8

7

6

5

4

3

2

1

TRIM RESISTOR VS. OUTPUT VOLTAGE CHANGE

EFFICIENCY VS. OUTPUT LOAD

90

85

80

75

70

65

60

55

50

10

20

40

50

60

80

100

Output Load (% or Rated)

1.4

1.2

1

0.8

0.6

0.4

OUTPUT RIPPLE VS. INPUT VOLTAGE

Vin

LL

Nom

HL

12

15

15

+trim -trim trim

1.2

1

0.8

0.6

EFFICIENCY VS. TEMPERATURE

HYSTERESIS GRAPH

Undervoltage Lockout Threshold Voltages

Nominal Input

Shutdown Low

Shutdown High

Voltage Range

Voltage (V1)

Voltage (V2)

OFF

ON

48

32.5

33.5

Specifications typical at TA=25°C, rated output current.

PERFORMANCE GRAPHS

90

85

80

75

70

65

60

Vin

EFFICIENCY VS. INPUT VOLTAGE

34

39

44

49

54

59

64

69

74

50%Load

10%Load

100%Load

Vin