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www.recom-power.comREV.: 0/2023I-1

R-78K-1.0

DC/DC Converter

1.0 Amp

SIP3

Single Output

Description

The R-78K-1.0 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-78K-1.0’s high efficiency of up to 95% no heat-sink

is required, and operation from -40 to 90°C is possible with slight derating. The compact TO-220

compatible SIP3 package measures only 11.5 x 7.55 x 10.2mm, so it saves precious board space.

ABSOLUTE MAX RATINGS (exceeding these ratings may damage the device)

ParameterConditionMin.Typ.Max.

Maximum Input Voltage Slew Rate

(1)

+V

IN

to GND10VDC/µs

Case Temperature

-40°C110°C

Storage Temperature

-50°C125°C

Features

Switching

Regulator

• Efficiency up to 95%, no need for heatsinks

• 4.5 - 36VDC wide input voltage

• -40°C to +90°C ambient operation without

derating

• Pin compatible with 78 series regulators

• Non isolated DC/DC converter

• Undervoltage and short circuit protection

R

E

C

O

M

C

O

N

V

E

R

T

E

R

S

C

O

M

P

L

I

A

N

T

P

R

O

D

U

C

T

S

RoHS

2

+

compliant

10 from 10

R

E

C

O

M

C

O

N

V

E

R

T

E

R

S

C

O

M

P

L

I

A

N

T

P

R

O

D

U

C

T

S

REACH

compliant

IEC/EN62368-1 3rd Edition certified

EN55032 compliant

CB-Report

Notes:

Note1: At higher slew rates or hard plugging, add 27µF E-Cap between +Vin and GND,

especially when Vin is >18VDC

Model Numbering

Specifications

Output Current

Output Voltage

R-78K -

Selection Guide

Part

Number

Input

Voltage Range

[VDC]

Output

Voltage

[VDC]

Output

Current

[mA]

Efficiency

@ min. Vin

[%]

@ max. Vin

[%]

R-78K1.8-1.04.5 - 361.810008371

R-78K2.5-1.04.5 - 362.510008575

R-78K3.3-1.04.5 - 363.310008879

R-78K5.0-1.06.5 - 36510009285

R-78K9.0-1.012 - 36910009389

R-78K12-1.015 - 361210009591

R-78K15-1.018 - 361510009491

Product specificaties