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Features

Efficiency up to 95%,Non isolated, no need for heatsinks Pin-out compatible with LM78XX Linears Low profile( L*W*H=11.5*8.5*17.5mm) Wide input range.(4.75V ~ 18V) Short circuit protection, Thermal shutdown Non standard outputs available as specials between 1.5V ~ 6.5V Low ripple and noise "L" Version with 90 pins
INNOLINE
DC/DC-Converter
R-78Bxx1.5(L) Series
1.5 AMP SIP3 Single Output
Selection Guide
Part Number* SIP3 R-78B1.5-1.5 R-78B1.8-1.5 R-78B2.5-1.5 R-78B3.3-1.5 R-78B5.0-1.5 R-78B6.5-1.5 Input Range (V) 4.75 - 18 4.75 - 18 4.75 - 18 4.75 - 18 6.5 - 18 8.0 - 18 Output Voltage (V) 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 85 88 91 94 95 78 81 84 88 92 93
* add Suffix "L" for 90 bent pins, e.g. R-78B5.0-1.5L
Description
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.
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
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INNOLINE
DC/DC-Converter
R-78Bxx-1.5 (L) Series
Conditions All Series, see Selection Guide All Series All Series All Series All Series 60 Min. 4.75 1.5 0 Typ. Max. 18.0V 6.5V 1500mA 5000mA 80mA 0.65W Continuous, automatic recovery All Series All Series All Series 100% <-> 50% load Transient Recovery Time All Series -40C ~ +85C ambient 300 Vin = min. to max. at 0% load All Series -40C -55C Internal IC junction +160C 95% RH Epoxy with Non-Conductive Plastic Case(UL94V-0) 4g 340 7 150 2 0.2 20 80 1.0 15 3% 0.4% 25mV 120mV 1.5ms 30mVp-p 0.015%/C 1000F 380kHz 9mA 200mAp-p +85C +100C +125C 60C / W
Specifications (refer to the standard application circuit, Ta: 25C, minimum load = 10%)
Characteristics Input Voltage Range Output Voltage Range (for customized parts) Output Current (see Note 1) Output Current Limit Short Circuit Input Current Internal Power Dissipation Short Circuit Protection Output Voltage Accuracy (At 100% Load) Line Voltage Reguolation (Vin = min. to max. at full load) Load Regulation (10% to 100% full load) Dynamic Load Stability (with Output Capacitor=100F) Ripple & Noise (10% to 100% full load) Temperature Coefficient Max capacitance Load Switching Frequency Quiescent Current Input Reflected Ripple Current Operating Temperature Range Operating Case Temperature Storage Temperature Range Case Thermal Impendance Thermal Shutdown Relative Humidity Case Material Package Weight MTBF (+25C) . (+71C)
}
Detailed Information see Application Notes chapter "MTBF"
using MIL-HDBK 217F using MIL-HDBK 217F
3250 x 10 hours 1059 x 10 hours
Note 1: The converter requires a minimum load of 6mA to start up properly. Once started, the load can be reduced to 0%
Standard Application Circuit
+Vin
R-78Bxx-1.5
C1
+Vout
Add a blocking diode to Vout if current can flow backwards into the output, as this can damage the converter.
100F (Option)
-Vin
-Vout
2
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INNOLINE
Characteristics
DC/DC-Converter
R-78Bxx-1.5 (L) Series
Ripple
Vo=6.5V Vo=5V Vo=3.3V Vo=1.8V Vo=2.5V Vo=1.5V 50
Efficiency
100 75 50
Ripple (mV)
25
Efficiency (%)
25
Vo=6.5V Vo=5V Vo=3.3V Vo=2.5V Vo=1.8V Vo=1.5V 5 Vin ( V ) 10 15 18
5 Vin ( V )
10
15
18
Efficiency Vs Vin (Full Load)
Ripple Vs Vin (Full Load)
100 75 50
Vo=6.5V Vo=5V Vo=3.3V Vo=2.5V Vo=1.8V Vo=1.5V
50
25
Efficiency (%)
25
Ripple (mV)
Vo=6.5V Vo=5V Vo=3.3V Vo=2.5V Vo=1.8V Vo=1.5V 0.5 1.0 1.5
0.5
1.0
1.5
Output Current ( A )
Output Current ( A )
Efficiency Vs Load ( Vin=Max )
Ripple Vs Load ( Vin=Max )
100 75 50
Vo=6.5V Vo=5V Vo=3.3V Vo=2.5V Vo=1.8V Vo=1.5V
50
25
Efficiency (%)
25
Ripple (mV)
Vo=6.5V Vo=5V Vo=2.5,V, 3.3V Vo=1.5V, 1.8V 0.5 1.0 1.5
0.5
1.0
1.5
Output Current ( A )
Output Current ( A )
Efficiency Vs Load ( Vin=Min )
Ripple Vs Load ( Vin=Min )
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INNOLINE
Application Examples
DC/DC-Converter
R-78Bxx-1.5 (L) Series
R-78B5.0-1.5
R05P215D/P +15V@66mA +5V@1A
High efficiency multiple output
+Vin
22F
-Vin
0V Isolated Common -15V@66mA
- Wide input range suits both 12V and 7.2V battery packs - 5.2kV isolated short circuit protected outputs for analogue circuits, e.g. medical grade interface - High efficiency +5V/1A protected output for digital circuits - Further decoupling filtering may be necessary between the converters
+5V Rtn
Isolated, wide Input range, Distributed Power Architecture (Point of Load)
REC10-4805SRWZ/H +Vin +5V@0.25A
R-78B3.3-1.5 C1
+3.3V@1.5A
-Vin - High isolation voltage - 1.6kV - Improved loading / line regulation - Wide Input Voltage Range - 18~75V - Point-of-Load Architecture - C1 is required. Further decoupling filtering may be necessary between the converters
C2
C2,C3 : optional
R-78B1.8-1.5
+1.8V@1.5A
C3
0V
Package Style and Pinning (mm)
SIP3 PIN Package
8.50
RECOM R-78B5.0-1.5 ****
Pb
3rd angle projection
8.50
RECOM R-78B5.0-1.5 ****
17.5
0.51 typ.
4.10 1.50 max
Pb
4.10
0.7 typ.
123
L - Version Recommended Footprint Details
11.50 1.00 o+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
4
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