Features
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Efficiency up to 94%, non-isolated,
no need for heatsinks!
Pin-out compatible with LM78XX Linears
Very low profile (L*W*H=11.5*7.5*10.2mm)
Wide input range (4.75V ~ 18V)
Short circuit protection, thermal shutdown
UL94V-0 Package Material
INNOLINE
DC/DC-Converter
Non standard outputs available as specials
between 1.5V ~5.5V
Low ripple and noise
R-78xx-1.0
Series
1.0 AMP
SIP3
Single Output
Selection Guide
Part
Number
SIP3
R-781.8-1.0
R-782.5-1.0
R-783.3-1.0
R-785.0-1.0
Input
Range
(V)
4.75 – 18
4.75 – 18
4.75 – 18
6.5 – 18
Output
Voltage
(V)
1.8
2.5
3.3
5.0
Output
Current
(A)
1.0
1.0
1.0
1.0
Efficiency
Min. Vin
Max. Vin
(%)
(%)
82
87
90
94
76
81
84
89
Description
The R-78xx-1.0 series high efficiency switching regulators are ideally suited to replace 1 Amp 78xx linear
regulators and are pin compatible. The efficiency of up to 97% 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. Low ripple and
noise figures and a short circuit input current of typically only 10mA round off the specifications of this
versatile converter series.
Specifications
( typical at 25°C, 10% minimum load, unless otherwise specified )
Characteristics
Input Voltage Range
Output Voltage Range
Output Current
Output Current Limit
Short Circuit Input Current
Internal Power Dissipation
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
Ripple & Noise (20Mhz BW)
Temperature Coefficient
Max capacitance Load
Switching Frequency
Quiescent Current
Vin = min. to max. at 0% load
-40°C
-55°C
Internal IC junction
using MIL-HDBK 217F
using MIL-HDBK 217F
+160°C
1.9g
13338 x 10³ hours
3880 x 10³ hours
www.recom-international.com
Operating Temperature Range
Operating Case Temperature (with derating)
Storage Temperature Range
Case Thermal Impendance
Thermal Shutdown
Package Weight
MTBF (+25°C)
.
148
(+71°C)
280
350
5
All Series
All Series
All Series
100% <-> 50% load
All Series
-40°C ~ +85°C ambient
±2
0.2
0.4
±85mV
Conditions
All Series
All Series
All Series
All Series
All Series
10
Min.
4.75
1.5
0
Typ.
Max.
18V
5.5V
1000mA
3000mA
30mA
0.4W
Continuous, automatic recovery
±3%
0.4%
0.6%
±100mV
0.015%/°C
220µF
7mA
+85°C
+100°C
+125°C
70°C/W
Output Power (%)
Derating-Graph
(Ambient Temperature)
120
100
80
60
40
30
20
0
-40
20mVp-p 30mVp-p
430kHz
Safe Operating Area
0
25
50
Operating Temperature (°C)
60
85
75
100
}
Detailed Information see
Application Notes chapter "MTBF"
27-March-2007
RECOM [ RECOM INTERNATIONAL POWER ]
