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Features

Efficiency up to 97%,Non isolated, no need for heatsinks SMD Package Adjustable Output Voltage Wide input range.(4.75V ~ 34V) Short circuit protection, Thermal shutdown Remote On/Off Control
UL94V-0 Package Material
INNOLINE
DC/DC-Converter
Very Low Shutdown Current See Positive-to Negative Converter Application Note for use as a voltage inverter (alternative to LM79xx Linear)
R-78Axx0.5SMD Series
0.5 AMP SMD Single Output
Selection Guide
Part Number SMD R-78A1.5-0.5SMD R-78A1.8-0.5SMD R-78A2.5-0.5SMD R-78A3.3-0.5SMD R-78A5.0-0.5SMD R-78A6.5-0.5SMD R-78A9.0-0.5SMD R-78A12-0.5SMD R-78A15-0.5SMD Input Range (1) (V) 4.75 - 30 4.75 - 34 4.75 - 34 4.75 - 34 6.5 - 34 8.0 - 34 11 - 34 15 - 34 18 - 34 Output Voltage (V) 1.5 1.8 2.5 3.3 5.0 6.5 9.0 12 15 Adjust Range (V) fixed 1.5~3.3 1.5~4.5 1.8~5.5 2.5~8.0 3.3~11.0 4.5~12.6 4.5~12.6 fixed Output Current (A) 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Efficiency Min. Vin Max. Vin (%) (%) 73 82 87 91 94 95 96 97 97 63 71 77 81 86 88 92 94 95
Note 1:1.5V Output can be unstable with Vin>30VDC
Description
The R-78Axx-0.5SMD series high efficiency switching regulators are ideally suited to pick-and-place mass production. The efficiency of up to 97% means that very little energy is wasted as heat. The additional features of remote on/off control and adjustable output voltages will find many uses in the Battery-powered, Industrial, Medical and Automotive markets. Low ripple and noise figures and a shutdown input current of typically only 20uA round off the specifications of this versatile SMD 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-78Axx-0.5 SMD Series
Conditions See Table See Table All Series All Series All Series Min. 4.75 1.5 0 Typ. Max. 34.0V 15V 500mA 2000mA 25mA 0.4W Continuous, automatic recovery All Series See Table 1 1.5V to 6.5V 9V to 15V 1.5V to 6.5V 9V to 15V 100% <-> 50% load 100% <-> 10% load 1.5V to 6.5V 9V to 15.5V -40C ~ +85C ambient 280 Vin = min. to max. at 0% load 0.8 ON: Open or 1.6Specifications ( typical at 25C, 10% minimum load, unless otherwise specified )
Characteristics Input Voltage Range (Note 1) Output Voltage Range Output Current Output Current Limit Short Circuit Input Current Internal Power Dissipation Short Circuit Protection Output Voltage Accuracy (At 100% Load) Adjustable Voltage Range Line Voltage Regulation (Vin = min. to max. at full load) Load Regulation (10 to 100% full load) Dynamic Load Stability Ripple & Noise (without Output Capacitor) Temperature Coefficient Max capacitance Load Switching Frequency Quiescent Current Shutdown Input Current Remote On/Off Threshold Voltage ON/OFF Remote Control Operating Temperature Range (with derating) Switch On/Off Time Operating Case Temperature Storage Temperature Range Case Thermal Impendance Thermal Shutdown Package Weight MTBF (+25C) . (+71C)
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Detailed Information see Application Notes chapter "MTBF"
using MIL-HDBK 217F
Standard Application Circuit
+Vin Cin
1,2 4,5
+Vout R1 R2
Add a blocking diode to Vout if current can flow backwards into the output, as this can damage the converter.. See Application Examples for details.
R-78Axx-0.5SMD
6
On/Off
10F (Vin>28V)
10 3,7,8,9
-Vin
Use input capacitor if Vin>28VDC.
-Vout
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INNOLINE
Characteristics
DC/DC-Converter
R-78Axx-0.5 SMD Series
Ripple
Vo=12V,15 V Vo=9V Vo=5V Vo=3.3V Vo=1.8V Vo=1.5V 50 Vo=15V Vo=12V Vo=9V Vo=5V Vo=3.3V Vo=1.8V Vo=1.5V Vin (V) 10 20 30 34
Efficiency
100
50
25
Efficiency (%)
Vin (V)
10
20
30 34
Efficiency Vs Vin (Full Load)
Ripple (mV)
Ripple Vs Vin (full load)
100
Vo=15V Vo=12V Vo=5V Vo=3.3V Vo=1.8V Vo=1.5V
50
50
25
Efficiency (%)
0.1
0.2
0.3
0.4
0.5
0.6
Ripple (mV)
Vo=12V Vo=15V Vo=9V Vo=5V Vo=3.3V Vo=1.8V Vo=1.5V 0.1 0.2 0.3 0.4 0.5 0.6
Output Current ( A )
Output Current ( A )
Efficiency Vs Load ( Vin=Max )
Ripple Vs Load ( Vin=24V )
100
Vo=12,15V Vo=5V Vo=3.3V Vo=1.8V Vo=1.5V
25 20 15 10 Vo=15V Vo=12V Vo=1.8V Vo=3.3, 9V Vo=5V Vo=1.5V
50
Efficiency (%)
Ripple (mV)
5
0.1
0.2
0.3
0.4
0.5
0.6
0.1
0.2
0.3
0.4
0.5
0.6
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-78Axx-0.5 SMD Series
Flash Memory Program Voltage Switcher
+Vin R-78A12-0.5SMD 20kW Pgm
D1 C1
220kW 0V Program
Reprogrammable Flash Memory
D2
D1, D2: schottky Diode "Program" = 0V, Pgm Pin = +5V "Program" = high, Pgm Pin = +12,6V
0V
Output protection from external voltage
+Vin R-78A5.0-0.5SMD Vout = 5.0V
On/Off -Vin
68kW
Com Converter Output set to 5.7V to compensate for diode drop
DC/DC Converter ( 1:1 ) +Vin R-78Axx-0.5SMD +Vout
-Vin - High isolation voltage - Improved loading / line regulation - Wide Input Voltage Range - Point-of-Load Architecture - Remote On/Off Control On/Off
C1 C2
-Vout C1: Required (further decoupling filtering may be necessary between the two converters), C2: Optional
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INNOLINE
DC/DC-Converter
Table 1: Adjustment Resistor Values
0.5Adc Vout (nom.) Vout (adj) 1.5 (V) 1.8 (V) 2.5 (V) 3.0 (V) 3.3 (V) 3.6 (V) 3.9 (V) 4.5 (V) 4.9 (V) 5.0 (V) 5.1 (V) 5.5 (V) 6.5 (V) 8.0 (V) 9.0 (V) 10 (V) 11 (V) 12 (V) 12.6 (V) 12K 4.7K 2.7K 50K 29K 19.4K 14k 8k 69K 30.5K 12.1k 7.6k 6.8k 6.2k 4k R-78A1.8 -0.5SMD 1.8Vdc R1 3K R2 R-78A2.5 -0.5SMD 2.5Vdc R1 200 12K 21K 88.4K R2 R-78A3.3 -0.5SMD 3.3Vdc R1 R2
R-78Axx-0.5 SMD Series
R-78A5.0 -0.5SMD 5.0Vdc R1 R2 R-78A6.5 R-78A12 R-78A9.0 -0.5SMD -0.5SMD 6.5Vdc R1 R2 9.0Vdc R1 R2 -0.5SMD 12.0Vdc R1 R2
5.6K 17K 27K 42K 58K 180K 850K 6.7K 14K 23K 49K 77k 86k 540k 71k 20.2k 7.2k 26K 11.3K 5.2K 1.8K 59K 97K 160K 26K 36K 39K 42K 56K 112K 400K 17K 24K 26K 28K 36K 63K 125K 200K 345K
18.5K 740K 5.2K 830K 216K
Package Style and Pinning (mm)
SMD 10Pin Package
15.24 14.84 7.05 1.65 9.00 2.54x4 8.60 10.00 11.80 9.30 9.00 10 9 8 7 6
RECOM R-78Axx-0.5SMD xxxx
3rd angle projection
12345
Pin Connections Pin # 1,2 +Vin 3,7,8,9 GND 4,5 +Vout 6 V adj 10 Remote On/Off xx.x 0.5mm xx.xx 0.25mm
Recommended Footprint Details
0.55
Bottom View
13.00 1.20
10 9 8 7 6
Top View
12 34 5 1.80
2.54
1.20
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