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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
0.5 AMP
SIP3
Single Output
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.
RoHS
Selection Guide
Part
Number
SIP3
Input
Range
(V)
Output
Voltage
(V)
Output
Current
(A)
R-78HB3.3-0.5
9 - 72
3.3
0.5
82
80
76
R-78HB5.0-0.5
9 - 72
5.0
0.5
87
85
81
R-78HB6.5-0.5
9 - 72
6.5
0.5
91
87
84
R-78HB9.0-0.5
14 - 72
9.0
0.5
92
90
86
R-78HB12-0.5
17 - 72
12
0.5
94
93
89
R-78HB15-0.5
20 - 72
15
0.5
95
94
91
R-78HB24-0.3
36 - 72
24
0.3
96
2011/65/EU
6/6
Efficiency
Vmin. 30V 72V
(%) (%) (%)
EN-55022 Certified
EN-55024 Certified
IEC/EN-60950-1 Certified
R-78HB
92
* add Suffix “L” for 90° bent pins, e.g. R-78HB5.0-0.5L
Derating-Graph
Characteristics
Conditions
Min.
Typ.
Max.
Input Voltage Range
See table
9V
72V
75V max.
Output Voltage Range (for customized parts)
All Series
3.3V
24V
Output Current (see Note 1)
3.3V, 5V, 6.5V, 9V, 12V, 15V
10mA
500mA
24V
6mA
300mA
Short Circuit Input Current
All Series
15mA
Internal Input Filter
25mA
1µF Capacitor
Internal Power Dissipation
0.65W
Short Circuit Protection
Continuous, automatic recovery
Output Voltage Accuracy
At 100% Load
±2%
Line Voltage Regulation
Vin = min. to max. at full load
0.4%
1%
Load Regulation
10% to 100% full load
0.3%
0.6%
Dynamic Load Stability (with Output Capacitor=100µF) 100% <-> 50% load
Ripple & Noise (without Output Capacitor)
±3%
(Ambient Temperature)
120
100
Output Power (%)
Specifications (refer to the standard application circuit, Ta: 25°C, minimum load = 10%)
80
60
40
20
0
Safe Operating Area
-40
0
25
50
Operating Temperature (°C)
85
75
100
71
±75mV ±100mV
10% to 100% full load
20mVp-p 60mVp-p
continued on next page
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REV: 1/2016
I-29
R-78HBxx-0.5
(L) Series
INNOLINE
DC/DC-Converter
Specifications (refer to the standard application circuit, Ta: 25°C, minimum load = 10%)
Characteristics
Conditions
Temperature Coefficient
-40°C ~ +85°C ambient
Max capacitance Load
Min.
Typ.
with normal start-up time, no external components
100µF
with <1 second start up time + diode protection circuit
6800µF
Switching Frequency (See Graph)
Full Load
Quiescent Current
Vin = 48VDC. at minimum load
120kHz
800kHz
1mA
Operating Temperature Range
5mA
-40°C
+85°C
Operating Case Temperature
+100°C
Storage Temperature Range
-55°C
+125°C
Case Thermal Impedance
60°C / W
Relative Humidity
95% RH
Case Material
Non-Conductive Black Plastic
Potting Material
Silicone (UL94V-0)
Package Weight
4g
Packing Quantity
42 pcs per Tube
Soldering Temperature
265°C max./10 sec.
Conducted Emissions
EN55022
Class B
Radiated Emissions
EN55022
Class B
ESD
IEC/EN General Safety
EN61000-4-2
Report: LVD 1603123
Class A
IEC/EN-60950-1, 2nd Edition + AM:2
MTBF (+25°C)
using MIL-HDBK 217F
7395 x 10³ hours
using MIL-HDBK 217F
1242 x 10³ hours
(+71°C)
}
Detailed Information see
Application Notes chapter "MTBF"
Typical Application Circuit
+Vin
+Vout
R-78HBxx-0.5
3.3µF/100V
Required if
Vin>50V
GND
GND
The converter has a built in soft start circuit. Rapidly changing the input voltage
from Vin(min) Vin(max) can bypass this circuit and damage the converter.
Typical Characteristics
Switching
Frequency
vs
Load
800
Vo=24V
Vo=15V
Vo=12V
Vo=9.0V
Vo=6.5V
Vo=5.0V
Vo=3.3V
400
200
Frequency (kHz)
R-78HB
Max.
0.015%/°C
100
50
10
10
50
100
200
300
400
500
Output Current ( mA )
Switching Frequency Vs Load ( Vin=30~72V )
I-30
REV: 1/2016
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R-78HBxx-0.5
(L) Series
INNOLINE
DC/DC-Converter
Typical Characteristics
Ripple
Efficiency
Vo=24V
Vo=15V
Vo=12V
Vo=9V
Vo=6.5V
Vo=5V
Vo=3.3V
100
75
50
25
Vo=24V
Vo=6.5V
Vo=12V,15V
Vo=3.3V
Vo=9V
Vo=5V
Ripple (mV)
Efficiency (%)
50
25
9
20
30
40
50
60
9
72
30
20
Vo=15V
Vo=12V
Vo=9V
Vo=6.5V
Vo=5V
Vo=3.3V
75
40
Ripple (mV)
Efficiency (%)
25
200
300
400
20
10
500
50
Vo=15V, 24V
Vo=12V
Vo=9V
Vo=6.5V
Vo=5V
Vo=3.3V
100
75
300
400
500
40
Ripple (mV)
Efficiency (%)
25
200
300
60
50
100
200
Ripple Vs Load ( Vin=Max )
Efficiency Vs Load ( Vin=Max )
50
100
Output Current ( mA )
Output Current ( A )
10
Vo=6.5V
Vo=12V, 15V
Vo=3.3V
Vo=9.0V
Vo=5.0V
Vo=24V
R-78HB
100
72
60
50
50
60
Ripple Vs Vin ( Full Load )
Vo=24V
10
50
Vin ( V )
Vin ( V )
Efficiency Vs Vin (Full Load)
100
40
400
500
Vo=24V
20
10
Output Current ( A )
50
100
200
Vo=6.5V
Vo=12V, 15V
Vo=3.3V
Vo=9.0V
Vo=5.0V
300
400
500
Output Current ( mA )
Efficiency Vs Load ( Vin=Min )
Ripple Vs Load ( Vin=Min )
*Note: Operation under no load will not damage these devices, however they may not meet all specifications. A minimum load of 10mA is recommended
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REV: 1/2016
I-31
R-78HBxx-0.5
(L) Series
INNOLINE
DC/DC-Converter
Optional Protection Circuit
Optional Protection 2:
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.
+Vin
+Vout
R-78xx-xx
+Vin
Vout=
+Vout 0.3V
R-78xx-xx
Schottky Diode
The diode can either be fitted
across the device if the source is
low impedance or fitted in series
with the output (recommended).
GND
GND
GND
GND
Typical Application
High Input Voltage Multiple Output Supply
Reverse Polarity
Protection
R-78HB12-0.5
+Batt
+12V@100mA
+5V@850mA
R-785.0-1.0
Cstorage,
10uF
Brown Out
Protection
-Batt
0V Com
R-78HB
-
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
Package Style and Pinning (mm)
SIP3 PIN Package
8.50
8.50
RECOM
17.5
Front View
R-78HB5.0-0.5
****
Pb
Front View
****
0.51 typ.
4.10
1.50 max
0.7 ±1.0
4.10
1.00 ø+0.15/–0
11.50
2.54
Bottom View
3.21
Pb
1 2 3
L - Version
Recommended Footprint Details
0.25
RECOM
R-78HB5.0-0.5
5.08
2.0
Top View
2.54
Pin Connections
Pin #
1
+Vin
2
GND
3
+Vout
xx.x ±0.5mm
xx.xx ±0.25mm
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: 1/2016
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