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R-78B3.3-1.5

Description
Non-isolated DC/DC converter 1.5A DC/DC REG 4.75-18Vin 3.3Vout
CategoryThe power supply    DC/DC converters    The isolated DC/DC converter   
File Size1MB,7 Pages
ManufacturerRECOM
Environmental Compliance
Download Datasheet Parametric Compare View All

R-78B3.3-1.5 Overview

Non-isolated DC/DC converter 1.5A DC/DC REG 4.75-18Vin 3.3Vout

R-78B3.3-1.5 Parametric

Parameter NameAttribute value
MakerRECOM
Product CategoryNon-isolated DC/DC converter
productNon-Isolated / POL
Number of outputs1 Output
Input voltage4.75 V to 18 V
Output voltage—channel 13.3 V
Output current—channel 11.5 A
Package / box sizeSIP-3
length11.5 mm
width8.5 mm
high17.5 mm
EncapsulationTube
seriesR-78B
Factory packaging quantity42
unit weight4 g
Features
Switching
Regulator
Description
Efficiency up to 95%, no heatsinks required
Pin-out compatible with LM78XX linears
Low profile (L/W/H=11.5 x 8.5 x 17.5mm)
Wide input range
Short circuit protection, thermal shutdown
Low ripple and noise
„L“ version with 90° pins
DC/DC Converter
R-78B-1.5(L)
The R-78Bxx-1.5 series high efficiency switching regulators are ideally suited to replace 78xx
linear regulators and are pin compatible. The efficiency of up to 95% means that very little energy is
wasted as heat so there is no need for any heat sinks with their additional space and mounting costs.
The L-Version with 90° pins allows direct replacement for laid-flat regulators where component height is
at a premium. Low ripple and noise figures and a short circuit input current of typically only 10mA round
off the specifications of this versatile converter series.
1.5 Amp
SIP3
Single Output
Selection Guide
Part
Number
R-78B1.5-1.5
(1)
R-78B1.8-1.5
(1)
R-78B2.5-1.5
(1)
R-78B3.3-1.5
(1)
R-78B5.0-1.5
(1)
R-78B6.5-1.5
(1)
Input
Voltage Range
[VDC]
4.75 - 18
4.75 - 18
4.75 - 18
4.75 - 18
6.5 - 18
8.0 - 18
Output
Voltage
[VDC]
1.5
1.8
2.5
3.3
5.0
6.5
Output
Current
[A]
1.5
1.5
1.5
1.5
1.5
1.5
Efficiency
@ min Vin
@ max. Vin
[%]
[%]
83
78
85
81
88
84
91
88
94
92
95
93
Model Numbering
R-78B__-1.5/L
Output Voltage
Pinning
Output Current
Notes:
Note1: add suffix “/L” for 90° bent pins, e.g. R-78B5.0-1.5L
Specifications
(measured @ Ta= 25°C, 10% minimum load, unless otherwise stated)
BASIC CHARACTERISTICS
Parameter
Input Voltage Range
Quiescent Current
Internal Power Dissipation
Internal Operating Frequency
Minimum Load
(2)
EN55032 compliant
IEC/EN60950-1 certified
Condition
nom. Vin= 12VDC
nom. Vin= 12VDC
Vout= 1.5VDC
nom. Vin= 12VDC
10% to 100% full load
20MHz BW
Min.
4.75VDC
Typ.
7mA
Max.
18VDC
9mA
0.65W
380kHz
300kHz
0%
340kHz
Output Ripple and Noise
(3)
Ref. Back Ripple Current
Absolute Maximum
Capacitive Load
15mVp-p 30mVp-p
150mAp-p 200mAp-p
1000µF
6800µF
1 second start up, no external components
<1 second start up + diode protection circuit
Notes:
Note2: Operation under no load will not harm the converter, but specifications may not be met
A minimum load of 10mA is recommended
Note3: Output Ripple and Noise is tested from 10% to 100% load
continued on next page
www.recom-power.com
REV.: 2/2018
I-1

R-78B3.3-1.5 Related Products

R-78B3.3-1.5 R-78B1.5-1.5 R-78B6.5-1.5L R-78B6.5-1.5
Description Non-isolated DC/DC converter 1.5A DC/DC REG 4.75-18Vin 3.3Vout Non-isolated DC/DC converter 1.5A DC/DC REG 4.75-18Vin 1.5Vout Non-isolated DC/DC converter 1.5A DC/DC REG 8.0-18Vin 6.5Vout Non-isolated DC/DC converter 1.5A DC/DC REG 8.0-18Vin 6.5Vout
Maker RECOM RECOM RECOM RECOM
Product Category Non-isolated DC/DC converter Non-isolated DC/DC converter Non-isolated DC/DC converter Non-isolated DC/DC converter
product Non-Isolated / POL Non-Isolated / POL Non-Isolated / POL Non-Isolated / POL
Number of outputs 1 Output 1 Output 1 Output 1 Output
Input voltage 4.75 V to 18 V 4.75 V to 18 V 8 V to 18 V 8 V to 18 V
Output voltage—channel 1 3.3 V 1.5 V 6.5 V 6.5 V
Package / box size SIP-3 SIP-3 SIP-3 SIP-3
length 11.5 mm 11.5 mm 11.5 mm 11.5 mm
width 8.5 mm 8.5 mm 8.5 mm 8.5 mm
high 17.5 mm 17.5 mm 17.5 mm 17.5 mm
Encapsulation Tube Tube Tube Tube
series R-78B R-78B R-78B R-78B
Factory packaging quantity 42 42 42 42
unit weight 4 g 4 g 4 g 4 g
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