SERIES MR
MILITARY DCDC CONVERTERS
Hi Reliability, UltraMiniature, Isolated DCDC Converters
55ºC +85ºC Operating Temperature
Wide Input Range, All Units Shielded
Low Profile .300"
No Heat Sink or Electrical Derating Required
This series of high efficiency wide input range, encapsulated regulators come in 42 different models.
Manufactured using high grade military components, this units will operate from 55º C to +85º C with no
heat sink or electrical derating required. The 6 sided shielding and 32 pin DIP compatability combined
with input/output isolation and the wide input range capabilities will meet your most stringent military
requirements.
Diodes JAN TX
Transformers Manufactured to MILPRF27, Grade 5, Class S
Capacitors MILC 55365/4, MILC 39003/03, MILC 20/27E, MILC 39014/05
Resistors MILR39017, MILR22097
IC Hermetically Sealed (MILSTD883 Screened)
FEATURES
Voltage regulation over input range of
Unit
Low
5V
8V
18V
High
15V
24V
36V
TYPICAL CHARACTERISTICS:
Test conditions: 25º C ambient.
Operating temperature: 55º C to +85º C ambient.
Output voltage tolerance: ±1% at nominal input
voltage
Output voltage temperature coefficient: 0.02%/ºC
Storage temperature: 55º C to +125º C
Short circuit protection: Temporary
Operating frequency: 40 Khtz, typ.
OPTIONS AVAILABLE PER MILSTD883
Stabilization Bake
Temperature Cycle
Hi Temperature Burn In 160 Hours at Full Power
MRE
MRF
MRA
Load regulation (see table for typical variation at
different loads)
Line regulation = Typical values
515V DC = ±1.0%
824V DC = ±1.0%
1836V DC = ±2.0%
High efficiency up to 78%
Will operate over a temperature range of 55º C to
+85º C with no heat sink or electrical derating
6 sided shielding
Isolation 100 megohms at 500 Volts DC
External output trimming pin standard, +5%
Single and dual isolated outputs
Each unit is supplied with an external control pin.
This "C" pin, when connected to the negative ()
input, will disable the unit, allowing for remote
shutdown.
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