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REV.: 4/2019 I-1

Features

Switching

Regulator

• Low cost switching regulator

• High start-up current capability

• Efﬁciency up to 95%

• Short circuit protection

• Pin compatible with 78 series regulators

• Non isolated DC-DC converter

• IEC/EN60950-1+ AM2 certiﬁed

R-78E-0.5

Description

The R-78E series is a switching regulator module that has been designed to offer all the advantages of a

switching regulator (high efﬁciency, wide input range, accurate output voltage regulation) but with a low

cost for production quantities. Due to the R-78E’s high efﬁciency of up to 95% no heat-sink is required.

The compact TO-220 compatible SIP3 package measures only 11.6 x 8.5 x 10.4mm, so it saves

precious board space.

DC/DC Converter

0.5 Amp

SIP3

Single Output

IEC60950-1 certiﬁed

EN60950-1 certiﬁed

Speciﬁcations (measured @ 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 6VDC 24VDC 28VDC

Quiescent Current 1.5mA

Minimum Load

(3)

Internal Operating Frequency 570kHz

Output Ripple and Noise

(4)

20MHz BW

3.3, 5, 9Vout

12, 15Vout

50mVp-p

70mVp-p

continued on next page

Selection Guide

Part Input Output Output Efﬁciency

(1)

Max. Capacitive

Number Voltage Range Voltage Current @ min Vin @max. Vin Load

(2)

[VDC] [VDC] [A] [%] [%] [µF]

R-78E3.3-0.5 6-28 3.3 0.5 75 88 220

R-78E5.0-0.5 7-28 5 0.5 82 92 220

R-78E9.0-0.5 12-28 9 0.5 89 94 220

R-78E12-0.5 15-28 12 0.5 92 95 220

R-78E15-0.5 18-28 15 0.5 93 95 220

Notes:

Note3: recommend to use with more than 2% load, if not, the ripple of the product may exceeds the

speciﬁcation, but doesn’t affect the reliability of the product

Note4: Measurements are made with a 100nF MLCC across output (low ESR)

Notes:

Note1: Efﬁciency is tested at nom. input voltage and full load

Note2: Max. Cap Load is tested by nominal input and full resistive load

Model Numbering

Output Voltage Output Current

R-78E__-0.5

Summary of content (4 pages)

PAGE 1
• • • • • • • Features Switching Regulator Low cost switching regulator High start-up current capability Efficiency up to 95% Short circuit protection Pin compatible with 78 series regulators Non isolated DC-DC converter IEC/EN60950-1+ AM2 certified DC/DC Converter R-78E-0.
PAGE 2
R-78E-0.5 DC/DC Converter Series Specifications (measured @ Ta= 25°C, full load, nominal input voltage and after warm-up) Efficiency vs Load R-78E5.0-0.5 100 90 Efficiency [%] 80 70 60 50 40 30 7Vin 12Vin 24Vin 28Vin 20 10 0 0 10 20 30 40 50 60 70 80 90 100 Output Load [%] REGULATIONS Parameter Condition Value Output Accuracy ±3.0% typ. Line Regulation low line to high line, full load ±0.5% typ. Load Regulation 10% to 100% load ±1.0% typ.
PAGE 3
R-78E-0.5 DC/DC Converter Series Specifications (measured @ Ta= 25°C, full load, nominal input voltage and after warm-up) SAFETY AND CERTIFICATIONS Certificate Type (Safety) Report / File Number Information Technology Equipment, General Requirements for Safety Standard IEC60950-1:2005, 2nd Edition + AM 2:2013 EN60950-1:2006 + AM2:2013 1603123 EAC RU-AT.49.
PAGE 4
R-78E-0.5 DC/DC Converter Series Specifications (measured @ Ta= 25°C, full load, nominal input voltage and after warm-up) INSTALLATION AND APPLICATION Standard Application R-78Exx-0.5 +VIN C1 +VOUT C2 10µF MLCC (optional) 10µF MLCC (optional) GND GND Notes: Note6: The R-78Exx-0.5 can not be used as positive to negative converter PACKAGING INFORMATION Parameter Type Value Packaging Dimension (LxWxH) tube 520.0 x 11.2 x 18.