SERIES MR
MILITARY DC-DC CONVERTERS

Hi Reliability, Ultra-Miniature, Isolated DC-DC 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 MIL-PRF-27, Grade 5, Class S Capacitors MIL-C 55365/4, MIL-C 39003/03, MIL-C 20/27E, MIL-C 39014/05 Resistors MIL-R-39017, MIL-R-22097 IC Hermetically Sealed (MIL-STD-883 Screened)

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 MIL-STD-883 Stabilization Bake Temperature Cycle Hi Temperature Burn In 160 Hours at Full Power

FEATURES Voltage regulation over input range of Unit Low High MRE 5V 15V MRF 8V 24V MRA 18V 36V Load regulation (see table for typical variation at different loads) Line regulation = Typical values 5-15V DC = ±1.0% 8-24V DC = ±1.0% 18-36V 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.

SERIES MR - SINGLE OUTPUT
PICO Part Number	Input Volt. Range	Output Volt. DC	Max. Load Current (mA)	Max. Output Power (watts)	Eff. @ Full Load Typical (%)*	Input Current Full Load Typical (mA)*	Output Volt. Ripple@ Full LD. 1-1 MHz BW mv p-p	Output Volt. Tolerance (± %)*	V LD. Reg. 25%-100% Load (± %)*	Line Regu- lation (± %)*	Price
MRE3.3S MRE5S MRE5.2S MRE9S MRE12S MRE15S MRE24S MRE28S	5-15 5-15 5-15 5-15 5-15 5-15 5-15 5-15	3.3 5 5.2 9 12 15 24 28	379 300 288 167 125 100 63 54	1.25 1.5 1.5 1.5 1.5 1.5 1.5 1.5	67 70 70 75 75 76 77 78	186 214 214 200 200 197 195 192	200 200 200 150 150 150 150 200	1.0 0.75 0.75 0.50 0.50 0.50 0.50 0.50	2.0 1.75 1.75 1.25 1.00 1.00 0.75 0.75	2.0 1.75 1.75 1.50 1.25 1.25 1.00 0.75	562.29 562.29 562.29 562.29 562.29 562.29 562.29 562.29
MRF3.3S MRF5S MRF5.2S MRF9S MRF12S MRF15S MRF24S MRF28S	8-24 8-24 8-24 8-24 8-24 8-24 8-24 8-24	3.3 5 5.2 9 12 15 24 28	530 400 384 222 167 133 83 71	1.75 2.0 2.0 2.0 2.0 2.0 2.0 2.0	67 70 70 75 75 76 77 78	163 179 179 167 167 164 162 160	200 200 200 150 150 150 150 200	1.00 .75 0.75 0.50 0.50 0.50 0.50 0.50	2.0 1.75 1.75 .25 1.00 1.00 0.75 0.75	1.75 1.50 1.50 1.25 1.00 1.00 1.00 0.75	562.29 562.29 562.29 562.29 562.29 562.29 562.29 562.29
MRA3.3S MRA5S MRA5.2S MRA9S MRA12S MRA15S MRA24S MRA28S	18-36 18-36 18-36 18-36 18-36 18-36 18-36 18-36	3.3 5 5.2 9 12 15 24 28	530 400 384 278 208 167 104 89	1.75 2.0 2.0 2.5 2.5 2.5 2.5 2.5	67 70 70 75 75 76 77 78	97 106 106 123 123 122 120 119	200 200 200 150 150 150 150 200	1.0 0.75 0.75 0.50 0.50 0.50 0.50 0.50	2.0 1.75 1.75 1.25 1.00 1.00 0.75 0.75	1.25 1.00 1.00 0.75 0.75 0.75 0.75 0.50	562.29 562.29 562.29 562.29 562.29 562.29 562.29 562.29
* Measurements taken with input voltage set at mid value. 10% minimum load required.

Series MR - Single Output Typical Weight: 26 grams Larger Size Drawing

Larger Size Schematic

SERIES MR - DUAL OUTPUT
PICO Part Number	Input Volt. Range	Output Volt. DC Per Output	Max. Load Current (mA) Per Output	Max. Output Power (watts) Per Output	Eff. @ Full Load Typical (%)*	Input Current Full Load Typical (mA)*	Output Volt. Ripple@ Full LD. 1-1 MHz BW mv p-p	Output Volt. Tolerance (± %)*	V LD. Reg. 25%-100% Load (± %)*	Line Regu- lation (± %)*	Price
MRE5D MRE9D MRE12D MRE15D MRE24D MRE28D	5-15 5-15 5-15 5-15 5-15 5-15	5 9 12 15 24 28	150 84 63 50 32 27	0.75 0.75 0.75 0.75 0.75 0.75	70 75 75 76 77 78	214 200 200 197 195 192	200 150 150 150 150 200	0.75 0.50 0.50 0.50 0.50 0.50	1.75 1.25 1.00 1.00 0.75 0.75	1.75 1.50 1.25 1.25 1.00 0.75	636.65 636.65 636.65 636.65 636.65 636.65
MRF5D MRF9D MRF12D MRF15D MRF24D MRF28D	8-24 8-24 8-24 8-24 8-24 8-24	5 9 12 15 24 28	200 111 84 67 42 36	1.00 1.00 1.00 1.00 1.00	70 75 75 76 77 78	179 167 167 164 162 160	200 150 150 150 150 200	0.75 0.50 0.50 0.50 0.50 0.50	1.75 1.25 1.00 1.00 0.75 0.75	1.50 1.25 1.00 1.00 1.00 0.75	636.65 636.65 636.65 636.65 636.65 636.65
MRA5D MRA9D MRA12D MRA15D MRA24D MRA28D	18-36 18-36 18-36 18-36 18-36 18-36	5 9 12 15 24 28	200 139 104 84 52 45	1.00 1.25 1.25 1.25 1.25 1.25	70 75 75 76 77 78	106 123 123 122 120 119	200 150 150 150 150 200	0.75 0.50 0.50 0.50 0.50 0.50	1.75 1.25 1.00 1.00 0.75 0.75	1.00 0.75 0.75 0.75 0.75 0.50	636.65 636.65 636.65 636.65 636.65 636.65
* Measurements taken with input voltage set at mid value. 10% minimum load required.

Series MR - Dual Output Typical Weight: 26 grams Larger Size Drawing

Larger Size Schematic

Ordering Instructions: No minimum. Net 30 days F.O.B. Pelham, NY Delivery--stock to one week for sample orders.

For immediate engineering assistance or to place an order:
Call Toll Free: 800-431-1064

PICO Electronics, Inc.

143 Sparks Ave. Pelham, NY 10803-1837
Tel: 914-738-1400 or Fax: 914-738-8225

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