RECOMMENDED OPERATING CONDITIONS

TYPICAL CHARACTERISTICS

INHIBIT

ABSOLUTE MAXIMUM RATINGS

Input Voltage

• 16 to 40 VDC

• 19 to 40 VDC 15 volt outputs

Output Power

• 12 watts (10 watts HR121-2805)

Lead Soldering Temperature (10 sec per pin)

• 300°C

Storage Temperature Range (Case)

• –55°C to +125°C

B4-48

HR120 SERIES

12 WATT

Output Voltage Temperature Coefficient

• 150 ppm/°C, typical

Input to Output Capacitance

• 50 pF, typical

Current Limit

• 125% of full load, typical

Isolation

• 100 megohm minimum at 500 V

Conversion Frequency

• 600 kHz typical

Inhibit Pin Voltage (unit enabled)

• 8 to 11 V

Input Voltage Range

• 16 to 40 VDC continuous

• 19 to 40 VDC continuous 15 volt outputs

• 50 V for 50 msec transient

Case Operating Temperature (Tc)

• –40°C to +85°C full power

Inhibit TTL Open Collector

• Logic low (output disabled)

Logic low 0.8 V max

Inhibit pin current 4 mA max

• Referenced to input common

• Logic high (output enabled)

Open collector

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

SINGLE OUTPUT MODELS

HR121-2805

HR121-2812

HR121-2815

PARAMETER

CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

MIN

TYP

MAX

UNITS

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

10 kHz to 2 MHz

—

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

16

28

40

19

28

40

VDC

TRANSIENT 50 ms

—

—

50

—

—

50

—

—

50

INPUT CURRENT

NO LOAD

—

20

30

—

20

30

—

20

30

FULL LOAD

—

—

478

—

—

548

—

—

535

mA

INHIBITED

—

2

3

—

2

3

—

2

3

INPUT RIPPLE

CURRENT

10 kHz TO 2 MHz

—

135

180

—

150

200

—

150

220

mA p-p

EFFICIENCY

74

77

—

77

81

—

80

83

—

%

POWER DISSIPATION

OVERLOAD

—

—

5

—

—

5

—

—

5

W

SHORT CIRCUIT

—

–

3.5

—

—

2.8

—

—

2

START-UP

DELAY

—

180

300

—

80

200

—

150

250

ms

Notes

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