notes

1. Guaranteed by design, not tested.

2.Indefinite short circuit protection not guaranteed above 125°C

(case)

3.Recoverytimeismeasuredfromapplicationofthetransient

tothepointatwhichVoutiswithinregulation.

4.Steptransitiontime>10µs.

SIngLEOUTPUTMODELS

SMHF2812S

SMHF2815S

unitS

paraMeter

cOnDitiOnS

MIn TYP MAX MIn TYP MAX

Output VOltage

tc = 25°c

11.8812.0012.12 14.8515.0015.15

VDc

Output current

—

—

1.25 —

—

1.00

a

Output pOwer

0

—

15 0

—

15

w

Output ripple

—

60

150

—

50

200

—

60

175

— 100 260

mVp-p

line regulatiOn

—

5

100 —

5

100

mV

lOaD regulatiOn

nO lOaD tO Full

—

20

50 —

20

50

mV

input VOltage

nO lOaD tO Full

cOntinuOuS

16

28

40

0

—

50

16

28

40

0

—

50

VDc

V

input current

nO lOaD

—

25

55

—

5

12

—

25

62

—

5

12

mA

inHiBiteD

input ripple

current

—

35

80

—

—

120

—

35

80

—

—

120

mAp-p

eFFiciencY

tc = 25°c

76

79

— 78

80

—

%

SHOrt circuit

pOwer DiSSipatiOn —

3.5

8

—

7.5

30

—

3.5

8

—

7.5

30

w

ms

Step lOaD

reSpOnSe

50% - 100% - 50%

-700 150 700

— 150 1000

-800 200 800

— 600 1200

mVpk

µs

Step line

16 - 40 -16 VDc

-800 550 800

—

0.8

1.2

-800 550 800

—

0.8

1.2

mVpk

ms

Start-up

DelaY

—

10

25

— 200 1200

—

10

25

— 200 1500

ms

mVpk

tc = 25°c

—

—

100 —

—

100

µF

ElectricalCharacteristics:25°CTc,28VDCVin,100%load,radiationlevelO,unlessotherwisespecified.

Crane Aerospace & Electronics Power Solutions

smHF single and dual dc/dc converters

Page7of15

RevD-20070404

28 Volt input – 15 Watt

www.craneae.com