Features
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Efficiency up to 96%, Non isolated,
no need for heatsinks
Pin-out compatible with LM78XX Linears
Low profile( L*W*H=11.5*8.5*17.5mm)
High voltage input range, up to 72V
Short circuit protection, Thermal shutdown
Non-standard outputs available as specials
between 3.3V~24V
Low ripple and noise
”L” version with 90° pins
See Innoline Application Notes for use as an
inverter (alternative to LM79xx Linear)
INNOLINE
DC/DC-Converter
with year Warranty
Description
The R-78HBxx-Series high efficiency, high input voltage switching regulators are ideally suited to replace 78xx linear
regulators and are pin compatible. The efficiency of up to 96% 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.
An input voltage range of up to 8:1is unsurpassed by any other converter and allows the full stored energy utilization of
standard and high voltage batteries. The fully protected output is ideal for industrial applications (especially for industry
standard 24VDC bus supplies) and 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 15mA
round off the specifications of this versatile converter series.
Typical applications include telecommunication, automotive, industrial, aerospace and battery powered applications.
0.5 AMP
SIP3
Single Output
Selection Guide
Part
Number
SIP3
R-78HB3.3-0.5
R-78HB5.0-0.5
R-78HB6.5-0.5
R-78HB9.0-0.5
R-78HB12-0.5
R-78HB15-0.5
R-78HB24-0.3
Input
Range
(V)
9 - 72
9 - 72
9 - 72
14 - 72
17 - 72
20 - 72
36 - 72
Output
Voltage
(V)
3.3
5.0
6.5
9.0
12
15
24
Output
Current
(A)
0.5
0.5
0.5
0.5
0.5
0.5
0.3
Efficiency
Vmin. 30V 72V
(%) (%) (%)
82
87
91
92
94
95
96
80
85
87
90
93
94
76
81
84
86
89
91
92
2011/65/EU
6/6
RoHS
EN-55022 Certified
EN-55024 Certified
IEC/EN-60950-1 Certified
R-78HB
* add Suffix “L” for 90° bent pins, e.g. R-78HB5.0-0.5L
Specifications
(refer to the standard application circuit, Ta: 25°C, minimum load = 10%)
Characteristics
Input Voltage Range
Output Voltage Range
(for customized parts)
Output Current (see Note 1)
Short Circuit Input Current
Internal Input Filter
Internal Power Dissipation
Short Circuit Protection
Output Voltage Accuracy
Line Voltage Regulation
Load Regulation
Ripple & Noise
(without Output Capacitor)
At 100% Load
Vin = min. to max. at full load
10% to 100% full load
10% to 100% full load
±2%
0.4%
0.3%
Conditions
See table
All Series
3.3V, 5V, 6.5V, 9V, 12V, 15V
24V
All Series
Min.
9V
3.3V
10mA
6mA
15mA
Typ.
72V
Max.
75V max.
24V
300mA
25mA
0.65W
Continuous, automatic recovery
±3%
1%
0.6%
1µF Capacitor
500mA
Derating-Graph
(Ambient Temperature)
120
100
Output Power (%)
80
60
40
20
0
Safe Operating Area
-40
0
25
50
Operating Temperature (°C)
85
75
100
71
Dynamic Load Stability
(with Output Capacitor=100µF)
100% <-> 50% load
±75mV ±100mV
20mVp-p 60mVp-p
continued on next page
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REV: 2/2017
I-29
INNOLINE
DC/DC-Converter
Specifications
(refer to the standard application circuit, Ta: 25°C, minimum load = 10%)
Characteristics
Temperature Coefficient
Max capacitance Load
Switching Frequency (See Graph)
Quiescent Current
Operating Temperature Range
Operating Case Temperature
Storage Temperature Range
Case Thermal Impedance
Relative Humidity
Case Material
Potting Material
Package Weight
Packing Quantity
Soldering Temperature
Conducted Emissions
Radiated Emissions
ESD
IEC/EN General Safety
MTBF (+25°C)
(+71°C)
EN55022
EN55022
EN61000-4-2
Report: LVD 1603123
using MIL-HDBK 217F
using MIL-HDBK 217F
Conditions
-40°C ~ +85°C ambient
R-78HBxx-0.5
(L) Series
Min.
Typ.
Max.
0.015%/°C
100µF
6800µF
120kHz
1mA
-40°C
-55°C
800kHz
5mA
+85°C
+100°C
+125°C
60°C / W
95% RH
Non-Conductive Black Plastic
Silicone (UL94V-0)
4g
42 pcs per Tube
265°C max./10 sec.
Class B
Class B
Class A
IEC/EN-60950-1, 2nd Edition + AM:2
7395 x 10³ hours
1242 x 10³ hours
with normal start-up time, no external components
with <1 second start up time + diode protection circuit
Full Load
Vin = 48VDC. at minimum load
}
Detailed Information see
Application Notes chapter "MTBF"
R-78HB
Typical Application Circuit
+Vin
3.3µF/100V
Required if
Vin>50V
R-78HBxx-0.5
+Vout
GND
GND
Typical Characteristics
Frequency (kHz)
Switching
Frequency
vs
Load
800
400
200
100
50
10
400
Vo=24V
Vo=15V
Vo=12V
Vo=9.0V
Vo=6.5V
Vo=5.0V
Vo=3.3V
10
50
100
200
300
500
Output Current ( mA )
Switching Frequency Vs
Load ( Vin=30~72V )
I-30
REV: 2/2017
www.recom-power.com
INNOLINE
DC/DC-Converter
Optional Protection Circuit
Optional Protection 1:
Add a blocking diode to Vout if
current can flow backwards into
the output, as this can damage
the converter when it is powered
down.
The diode can either be fitted
across the device if the source is
low impedance or fitted in series
with the output (recommended).
R-78HBxx-0.5
(L) Series
Optional Protection 2:
+Vin
R-78xx-xx
+Vout
+Vin
R-78xx-xx
Schottky Diode
Vout=
+Vout -
0.3V
GND
GND
GND
GND
Typical Application
High Input Voltage Multiple Output Supply
Reverse Polarity
Protection
+Batt
R-78HB12-0.5
C
storage,
R-785.0-1.0
10uF
+12V@100mA
+5V@850mA
Brown Out
Protection
-Batt
-
-
-
-
0V Com
Wide input range 18V to 72V - can be used with 24V, 48V or 60V batteries
+12V output for interface and display electronics
+5V high current output for digital electronics
Further decoupling filtering may be necessary between the converters
R-78HB
Package Style and Pinning (mm)
SIP3 PIN Package
8.50
RECOM
****
8.50
Front View
Front View
4.10
1.50 max
RECOM
****
17.5
R-78HB5.0-0.5
Pb
R-78HB5.0-0.5
Pb
0.51 typ.
4.10
0.7
±
1.0
1 2 3
L - Version
Recommended Footprint Details
11.50
1.00 ø+0.15/0
2.54
Pin Connections
Pin #
1
+Vin
2
GND
3
+Vout
xx.x ±0.5mm
xx.xx ±0.25mm
0.25
3.21
Bottom View
5.08
2.0
Top View
2.54
The product information and specifications are subject to change without prior notice. RECOM products are not authorized for use in safety-critical applications (such as life support) without RECOM’s explicit
written consent. A safety-critical application is defined as an application where a failure of a RECOM product may reasonably be expected to endanger or cause loss of life, inflict bodily harm or damage property. The buyer
shall indemnify and hold harmless RECOM, its affiliated companies and its representatives against any damage claims in connection with the unauthorized use of RECOM products in such safety-critical applications.
I-32
REV: 2/2017
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