model number key

HR12

2 - 28 12

Base Model

Input Voltage

Output Voltage

Number of Outputs

(1 = single, 2 = dual)

Notes

1.Applies to both outputs.

2.Maximum combined output power is 12 watts. A maximum of 90% is

available from either output.

3.20% to 80% load on the positive output and 80% to 20% on the

negative output. See Figure 8.

4.50% load on the positive output and 50% to 20% load on the nega-

tive output. 50% load on the negative output and

50% to 20% load on the positive output. See Figure 7.

5.Indefinite short circuit protection not guaranteed above 85°C case

temperature.

Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.

pin out

BOTTOM VIEW

HR120

Squared corner and dot on

top of cover indicate pin one.

1

2

3

4

5

8

7

6

See case E1 for dimensions

pin

single output

dual output

1

Inhibit

Inhibit

2

No connection Positive Output

3

Output Common Output Common

4

Positive Output Negative Output

5

No connection No connection

6

Case Ground

Case Ground

7

Input Common Input Common

8

Positive Input

Positive Input

sIngLe OUTPUT mODeLs

HR121-2805

HR121-2812

HR121-2815

units

paRaMeteR

ConDitions

Min

typ

MaX Min typ MaX Min

typ

MaX

output Voltage

4.95

5.0

5.05 11.88 12 12.12 14.85 15 15.15

VDC

output CuRRent

—

—

2.0 —

—

1.0 —

—

0.8

A

output poWeR

—

—

10 —

—

12 —

—

12

W

output Ripple

—

40

60 —

30

60 —

25

50

mV p-p

line Regulation

—

10

50 —

10

50 —

10

50

mV

loaD Regulation

no loaD to Full

—

10

50 —

10

50 —

10

50

mV

input Voltage

no loaD to Full

16

28

40

—

—

50

16

28

40

—

—

50

16

28

40

—

—

50

VDC

tRansient

50 ms

input CuRRent

no loaD

—

20

30

—

—

478

—

2

3

—

20

30

—

—

548

—

2

3

—

20

30

—

—

535

—

2

3

mA

Full loaD

inhibiteD

input Ripple CuRRent

—

135

180 —

150

200 —

150

220

mA p-p

eFFiCienCy

74

77

— 77

81

— 80

83

—

%

loaD Fault1

poWeR Dissipation

oVeRloaD

—

—

5

—

—

3.5

—

—

5

—

—

2.8

—

—

5

—

—

2

W

shoRt CiRCuit

staRt

Delay

—

180

300 —

80

200 —

150

250

ms

HR120

SERIES

12 WATT

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HR120 Rev C - 20090904