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MRH2805S Datasheet(PDF) 2 Page - Interpoint Corporation Company

Part No. MRH2805S
Description  DC/DC CONVERTERS 28 VOLT INPUT
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Maker  INTERPOINT [Interpoint Corporation Company]
Homepage  http://www.interpoint.com
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MRH2805S Datasheet(HTML) 2 Page - Interpoint Corporation Company

   
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RECOMMENDED OPERATING CONDITIONS
ABSOLUTE MAXIMUM RATINGS
INHIBIT
Power Dissipation (Pd)
•5 W
Output Power
• 15 watts
Lead Soldering Temperature (10 sec per lead)
• 300°C
Storage Temperature Range (Case)
• –65°C to +125°C
B4-20
MRH SERIES
15 WATT
DC/DC CONVERTERS
TYPICAL CHARACTERISTICS
Input Voltage Range
• Continuous
16 to 40 VDC MRH28XXS and MRH2812D
19 to 40 VDC MRH2815D
16 to 36 VDC MRH285XXT
• 50 V for 50 msec transient
Case Operating Temperature (Tc)
• –55°C to +85°C full power
• –55°C to +125°C absolute
Inhibit TTL Open Collector
• Logic low (output disabled)
Inhibit pin current
≤ –2 mA
• 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
MRH2805S
MRH2812S
MRH2815S
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
–55°C TO +85°C
0.05
3.0
0.02
1.25
0.016
1.0
A
OUTPUT POWER
MIN. TO MAX. VIN
0.25
15
0.25
15
0.25
15
W
OUTPUT RIPPLE
10 kHz TO 2 MHz
40
70
25
50
25
50
mV p-p
LINE REGULATION
16 TO 40 VIN
5
10
5
20
5
20
mV
LOAD REGULATION1
MIN. LOAD TO FULL
5
30
5
30
5
30
mV
INPUT VOLTAGE2
NO LOAD TO FULL
16
28
40
16
28
40
19
28
40
VDC
TRANSIENT 50 ms
50
50
50
V
INPUT CURRENT
NO LOAD
50
60
50
60
50
60
FULL LOAD
750
730
720
mA
INHIBITED
22
25
22
25
22
25
INPUT RIPPLE
CURRENT
10 kHz TO10 MHz
25
50
25
50
25
50
mA p-p
EFFICIENCY
73
75
76
78
78
80
%
LOAD FAULT3
SHORT CIRCUIT
5
5
5
W
POWER DISSIPATION
OVERLOAD
5
5
5
START-UP
DELAY
3
10
3
10
3
10
ms
Notes
1. Load regulation is not guaranteed below minimum load.
2. Converter should not be inhibited or operated below 12 Vin above 104
rads (Si) total dose.
3. Indefinite short circuit protection is not guaranteed above 85°C case.
Output Voltage Temperature Coefficient
• 250 ppm/°C max
Input to Output Capacitance
• 100 p, typical
Current Limit
• 125% of full load typical
Isolation
• 100 megohm minimum at 500 V
Conversion Frequency
• 375 kHz. typical
Inhibit Pin Voltage (unit enabled)
• 5 to 6 V
Radiation (will operate through)
• Neutron fluence 1013 neutrons/ sq. cm.
• Radiation dose rate 1011 rads (Si) /sec
• Total dose 105 rads (Si)
DERATING OUTPUT POWER/CURRENT AND INPUT VOLTAGE
Temperatures are referenced to the temperature at the converter’s baseplate
• Linearly derate output power/current from 100% at 85°C to 0% at 125°C.
• Above 105°C linearly derate steady state input voltage to 33 V and
transient voltage to 38 V, at 125°C.
• Operation below an input voltage of 19 volts, including operation in MIL-
STD-704E emergency power conditions, is possible with derated
output power. See Figures 9 and 10.


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