www.recom-power.com

REV.: 0/2023

ECO-1

DC/DC Converter

Description

The R3M is an isolated 3W DC/DC converter in a compact SMD package available with 4:1

inputs covering 5, 12, 24, and 48V rails providing single or dual regulated,

short-circuit

protected outputs. There is no minimum load requirement. Isolation is 1.6kVDC/1min, and the operating

temperature is from -40°C up to +71°C without derating. Class A and Class B EMC

conformity requires only a few external components. Standard packaging is tube.

Features

Regulated

Converters

• 3W power in SMD package

• 4:1 Input voltage range

• Efficiency up to 84%

• 1.6kVDC/1min isolation

• Regulated output

• -40°C to +71°C at full load

• Continuous short circuit protected

R3M

Selection Guide

Model Numbering

YEAR

arrant

3

C

O

M

CONVER

T

M

P

LIA

NT PRO

D

U

REACH

compliant

C

O

M

CONVER

T

M

P

LIA

NT PRO

D

U

RoHS 2+

compliant

10 from 10

Specifications (measured @ Ta= 25°C, nom. Vin, full load and after warm-up unless otherwise stated)

Part

Input

nom. Output

Output

Efficiency

max. Capacitive

Number

Voltage Range (1)

Voltage

Current

typ. (2)

Load (3)

[VDC]

[VDC]

[mA]

[%]

[µF]

R3M-xx3.3S/SMD

4.5-18, 9-36, 18-75

3.3

700

76-77

4700

R3Mxx05S/SMD

4.5-18, 9-36, 18-75

5

600

80

2530

R3Mxx09S/SMD

4.5-18, 9-36, 18-75

9

333

81

1470

R3M-xx12S/SMD

4.5-18, 9-36, 18-75

12

250

83

1220

R3M-xx15S/SMD

4.5-18, 9-36, 18-75

15

200

83-84

1000

R3M-xx24S/SMD

4.5-18, 9-36, 18-75

24

125

82

470

R3M-xx05D/SMD

4.5-18, 9-36, 18-75

±5

±300

80

±1470

R3M-xx12D/SMD

4.5-18, 9-36, 18-75

±12

±125

82

±680

R3M-xx15D/SMD

4.5-18, 9-36, 18-75

±15

±100

82

±470

Notes:

Note1: Refer to

“Input Voltage Range”

Note2: Efficiency is tested at nominal input and full load at +25°C ambient

Note3: Max Cap Load is tested at nominal input and full resistive load

BASIC CHARACTERISTICS

Parameter

Condition

Min.

Typ.

Max.

Input Voltage Range

nom. VIN= 12VDC

4.5VDC

12VDC

18VDC

nom. VIN= 24VDC

9VDC

24VDC

36VDC

nom. VIN= 48VDC

18VDC

48VDC

75VDC

Input Surge Voltage

1 second max.

nom. VIN= 12VDC

25VDC

nom. VIN= 24VDC

50VDC

nom. VIN= 48VDC

100VDC

continued on next page

Case Style

Single/Dual

nom. Input Voltage

nom. Output Voltage

R3M-

/SMD

3 Watt

SMD

Single & Dual

Output