Datasheet

ManualsBrandsRecom ManualsBoard Mounted DC / DC ConvertersDC/DC Converter 6.5 ... 32V 3.3V 500mA

www.recom-power.com

REV.: 3/2018 I-1

Features

Switching

Regulator

• Efﬁciency up to 96%, no need for heatsinks

• Build-in diode protection circuit

• Low proﬁe (LxWxH= 11.5 x 8.5 x 17.5mm)

• Continuous short circuit protection

• RoHS compliant

• IEC/EN60950 certiﬁed

R-78W-0.5

Description

The R-78W series offers wired 0.5A switching regulators which are ideally suited to offer a stable

voltage supply without the need for a PCB for applications like high power LED lighting, battery

powered systems, cooling systems, or fans. Due to the high efﬁciencies of up to 96% there is no

need for a heat sink. The compact modules feature fully protected outputs and draw only 1mA under

no load conditions.

DC/DC Converter

0.5 Amp

SIP3 Wired

Single Output

IEC60950-1 certiﬁed

EN60950-1 certiﬁed

Speciﬁcations (measured at Ta= 25°C, full load, nominal input voltage and after warm-up)

BASIC CHARACTERISTICS

Parameter Condition Min. Typ. Max.

Input Voltage Range nom. Vin = 24VDC 6.5VDC 24VDC 32VDC

Quiescent Current 5mA 7mA

Internal Power Dissipation

0.4W

Minimum Load

(2)

Internal Operating Frequency 280kHz 330kHz 380kHz

Output Ripple and Noise

(3)

20MHz BW limited 50mVp-p 75mVp-p

Selection Guide

Part Input Output Output Efﬁciency Max. Capacitive

Number Voltage Range Voltage Current @ min Vin Load

(1)

[VDC] [VDC] [A] [%] [µF]

R-78W3.3-0.5 6.5 - 32 3.3 0.5 88 220

R-78W5.0-0.5 6.5 - 32 5.0 0.5 93 220

R-78W9.0-0.5 11 - 32 9.0 0.5 95 220

R-78W12-0.5 15 - 32 12.0 0.5 96 220

Notes:

Note2: Operation under no load will not harm the converter, but speciﬁcations may not be met

A minimum load of 6mA is recommended

Note3: Measurements are made with a 100nF MLCC across output (low ESR)

Notes:

Note1: Max. Cap Load is tested at nominal input and full resistive load

6800µF with <1sec start-up time

Model Numbering

Output Voltage Output Current

R-78W__-0.5

Summary of content (3 pages)

PAGE 1
Features • • • • • • Switching Regulator Efficiency up to 96%, no need for heatsinks Build-in diode protection circuit Low profie (LxWxH= 11.5 x 8.5 x 17.5mm) Continuous short circuit protection RoHS compliant IEC/EN60950 certified Description The R-78W series offers wired 0.5A switching regulators which are ideally suited to offer a stable voltage supply without the need for a PCB for applications like high power LED lighting, battery powered systems, cooling systems, or fans.
PAGE 2
R-78W-0.5 DC/DC Converter Series Specifications (measured at Ta= 25°C, full load, nominal input voltage and after warm-up) REGULATIONS Parameter Condition Type Output Accuracy all models Value ±2% typ. / ±3% max. Line Voltage Regulation low line to high line, full load 3.3VDC, 5VDC 9VDC, 12VDC ±0.2% typ. / ±0.4% max. ±0.1% typ. / ±0.2% max. Load Voltage Regulation 10% to 100% load 3.3VDC, 5VDC 9VDC, 12VDC ±0.4% typ. / ±0.6% max. ±0.25% typ. / ±0.4% max.
PAGE 3
R-78W-0.5 DC/DC Converter Series Specifications (measured at Ta= 25°C, full load, nominal input voltage and after warm-up) SAFETY AND CERTIFICATIONS Certificate Type (Safety) Report / File Number Standard Information Technology Equipment, General Requirements for Safety (LVD) LVD1407030-1 IEC60950-1:2005, 2nd Edition + AM 2:2013 EN60950-1:2006 + AM:2013 EAC RU-AT.49.