Features
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Efficiency up to 96%, no need for heatsinks!
Pin-out compatible with LM78XX Linear Regs.
Low profile (L*W*H=11.6*8.5*10.4mm)
Wide input range (5V ~ 42V)
Short circuit protection, thermal shutdown
Non-standard outputs available as specials
Low ripple and noise
See Innoline App Notes for use as a positive-to-
negative inverter (alternative to 79xx regulator)
INNOLINE
DC/DC-Converter
with 3 year Warranty
Description
The R-78Cxx-1.0 series switching regulators are ideally suited to replace 1 Amp 78xx linear regulators and are pin
compatible. Efficiencies of up to 96% means that very little energy is wasted as heat and the high input voltage is a
useful feature.
Selection Guide
Part
Number
SIP3
R-78C1.8-1.0
R-78C3.3-1.0
R-78C5.0-1.0
R-78C9.0-1.0
R-78C12-1.0
R-78C15-1.0
Input
Range
(V)
5 – 42
7 – 42
8 – 42
12 – 42
15 – 42
18 – 42
Output
Voltage
(V)
1.8
3.3
5
9
12
15
Output
Current
(A)
1.0
1.0
1.0
1.0
1.0
1.0
Efficiency
Min. Vin
Max. Vin
(%)
(%)
80
89
93
95
96
96
71
79
85
90
92
94
1.0 AMP
SIP3
Single Output
Specifications
( typical at 25°C, 10% minimum load, unless otherwise specified )
Characteristics
Input Voltage Range
Output Voltage Range
Output Current
Short Circuit Input Current (Vin =24V)
No Load Input Current
Short Circuit Protection
Output Voltage Accuracy (At 100% Load)
Line Regulation (100% Load, Vin max.)
Load Regulation (10 to 100% full load)
Dynamic Load Stability
Conditions
All Series
All Series
All Series
All Series
Min.
Vout+3V
1.8V
0mA*
Typ.
Max.
42V
15V
1000mA
2011/65/EU
6/6
RoHS
IEC/EN-60950-1 Certified
65mA
1mA
Continuous, automatic recovery
All Series
±2%
±3%
All Series
0.2%
All Series
0.4%
100% <-> 50% load
±75mV
100% <-> 10% load
±200mV
Ripple & Noise (20Mhz BW Limited)
Vin = 24V, Vout =1.8V-15V
75mVp-p 100mVp-p
With 10µF MLCC output capacitor
Full Load
30mVp-p
Temperature Coefficient
-40°C ~ +85°C ambient
0.015%/°C
Max capacitance Load with normal start-up time, no external components
470µF
with <1 second start up time + diode protection circuit
6800µF
Switching Frequency
280kHz
350kHz
420kHz
Operating Temperature Range
-40°C
+85°C
Maximum Case Temperature
+100°C
Storage Temperature Range
-55°C
+125°C
Case Thermal Impedance
70°C/W
Conducted Emissions (with filter)
EN55022
Class B
Radiated Emissions (with filter)
EN55022
Class B
ESD
EN61000-4-2
Class A
Radiated Immunity
EN61000-4-3
Class A
Package Weight
2g
Packing Quantity
42 pcs per Tube
Case Material
Non-Conductive Black Plastic
continued on next page
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REV: 1/2016
R-78C-1.0
Derating-Graph
(Ambient Temperature)
120
100
Output Power (%)
80
60
40
20
0
Safe Operating Area
-40
0
25
50
Operating Temperature (°C)
75
68
85
100
I-19
INNOLINE
DC/DC-Converter
Specifications
( typical at 25°C, 10% minimum load, unless otherwise specified )
Potting Material
IEC/EN General Safety
Standby Power
Fast Transient
Conducted Immunity
Magnetic Field Immunity
MTBF (+25°C)
(+68°C)
Report: LVD 1603123
R-78Cxx-1.0
Series
EN61000-4-4
EN61000-4-6
EN61000-4-8
using MIL-HDBK 217F
using MIL-HDBK 217F
Silicone (UL94V-0)
IEC/ EN-60950-1, 2nd Edition + AM:2
EN62301:2005
Class A
Class A
Class A
8600 x 10³ hours.
3880 x 10³ hours.
Note:
No load operation will not damage these devices, however they may not meet all specifications. A minimum load of 10mA is recommended.
Zener Diode Calculation
Minimum Zener Breakdown Voltage (V
Z
min
)
≥
V
out
nom
+ 3% Accuracy
V
IN
R-78
V
OUT
R-78C V
out
1.8V (1.85V max.)
3.3V (3.4V max.)
5V (5.15V max.)
9V (9.27V max.)
12V (12.36V max.)
15V (15.45V max.)
Zener Voltage, Vz (Vz
min
)
2.0V (1.90V)
3.6V (3.42V)
5.6V (5.32V)
10V (9.50V)
13V (12.35V) / 14V (13.30V)
17V (16.15V)
Recomended Zener Diode
MMSZ679T1G
MMSZ4685T1G
MMSZ4690T1G
MMSZ4697T1G
MMSZ4700T1G / MMSZ4701T1G
MMSZ4704T1G
Application Examples
High efficiency regulated outputs
+5VDC
REC3-0512DRW/H2/A
+Vin
+12VDC
Com
R-78C5.0-1.0
C1
C2
R-78C
GND
- Triple Outputs
- Wide input range 8V to 42V
- High System Efficiency, Suitable for 12V, 24V or 36V
Battery Powered Devices
GND
C1: Optional , C2 : Required (further decoupling filtering
may be necessary between the two converters)
Standard Application Circuit
+Vin
Low Voltage AC input, regulated DC output
+Vout
+24VDC unreg.
(27~40VDC)
24VAC +/-20%
~
~
+
-
R-78C5.0-1.0
C1
(Optional)
C2 (Optional)
10µF MLCC
Use soft start supply
R-78C5.0-1.0
C2
C2 : optional
+5V reg.
C1
GND
GND
- Low Voltage AC Input
- Regulated and Protected DC Output
GND
Package Style and Pinning (mm)
SIP3 PIN Package
10.40
R-78C5.0-1.0
0.51 typ.
****
Pb
0.70
±
1.0
RECOM
8.50
Front
RECOM
R-78C5.0-1.0
****
Pb
4.10
1 2 3
Recommended Footprint Details
11.60
0.25
Bottom View
Pin Connections
Pin #
1
2
3
xx.x ±0.5mm
xx.xx ±0.25mm
+Vin
GND
+Vout
1.00 ø+0.15/0
2.54
2.0
Top View
3.21
5.08
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-20
REV: 1/2016
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