Features ● ● ● ● ● ● ● ● ● INNOLINE 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 DC/DC-Converter R-78Axx0.5SMD Series UL94V-0 Package Material Very Low Shutdown Current See Positive-to Negative Converter Application Note for use as a voltage inverter (alternative to LM79xx Linear) 0.5 AMP SMD Single Output Selection Guide Part Number SMD Input Range (1) (V) Output Voltage (V) Adjust Range (V) Output Current (A) Efficiency Min. Vin Max. Vin (%) (%) R-78A1.5-0.5SMD 4.75 – 30 1.5 fixed 0.5 73 63 R-78A1.8-0.5SMD 4.75 – 34 1.8 1.5~3.3 0.5 82 71 R-78A2.5-0.5SMD 4.75 – 34 2.5 1.5~4.5 0.5 87 77 R-78A3.3-0.5SMD 4.75 – 34 3.3 1.8~5.5 0.5 91 81 R-78A5.0-0.5SMD 6.5 – 34 5.0 2.5~8.0 0.5 94 86 R-78A6.5-0.5SMD 8.0 – 34 6.5 3.3~11.0 0.5 95 88 R-78A9.0-0.5SMD 11 – 34 9.0 4.5~12.6 0.5 96 92 R-78A12-0.5SMD 15 – 34 12 4.5~12.6 0.5 97 94 R-78A15-0.5SMD 18 – 34 15 fixed 0.5 97 95 Note 1:1.5V Output can be unstable with Vin>30VDC Description Derating-Graph 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. (Ambient Temperature) Output Power (%) 120 100 80 60 40 20 0 Safe Operating Area -40 0 25 50 Operating Temperature (°C) www.recom-international.com 27-March-2007 85 75 100 71 143 INNOLINE R-78Axx-0.5 SMD Series DC/DC-Converter Specifications ( typical at 25°C, 10% minimum load, unless otherwise specified ) Characteristics Input Voltage Range (Note 1) Conditions See Table Min. 4.75 Typ. Max. 34.0V Output Voltage Range See Table 1.5 Output Current All Series 0 Output Current Limit All Series 2000mA Short Circuit Input Current All Series 25mA 15V 500mA Internal Power Dissipation 0.4W Short Circuit Protection Continuous, automatic recovery Output Voltage Accuracy (At 100% Load) All Series Adjustable Voltage Range Line Voltage Regulation (Vin = min. to max. at full load) 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 Load Regulation (10 to 100% full load) Dynamic Load Stability Ripple & Noise (without Output Capacitor) Temperature Coefficient ±2 ±3% ±50% 0.4% 0.2% 1.0% 0.4% 0.2 0.1 0.7 0.25 ±75V 20mVp-p 30mVp-p -40°C ~ +85°C ambient 0.015%/°C Max capacitance Load 220µF Switching Frequency 280 Quiescent Current 330 Vin = min. to max. at 0% load Shutdown Input Current Remote On/Off Threshold Voltage 0.8 ON/OFF Remote Control 380kHz 5 7mA 20 35uA 1.2 1.6V ON: Open or 1.6<Vr<5V, OFF: GND or 0<Vr<1.6V Operating Temperature Range (with derating) Ir=1.8uA typ. -40°C Switch On/Off Time +85°C (using Remote On/Off Control) 50ms Operating Case Temperature +100°C Storage Temperature Range -55°C +125°C Case Thermal Impendance 70°C / W Thermal Shutdown Internal IC junction +160°C Package Weight MTBF (+25°C) . (+71°C) ±100mV 30mVp-p 40mVp-p 2.7g } using MIL-HDBK 217F Detailed Information see Application Notes chapter "MTBF" 21098 x 10³ hours 4214 x 10³ hours Standard Application Circuit +Vin 1,2 On/Off Cin R-78Axx-0.5SMD 10 3,7,8,9 10µF (Vin>28V) +Vout 4,5 6 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. R1 R2 -Vin -Vout Use input capacitor if Vin>28VDC. 144 27-March-2007 www.recom-international.com INNOLINE R-78Axx-0.5 SMD Series DC/DC-Converter Characteristics Ripple Efficiency 100 Vo=12V,15 V Vo=9V Vo=5V Vo=3.3V Vo=1.8V Vo=1.5V 50 50 Vo=15V Vo=12V Vo=9V Vo=5V Vo=3.3V Ripple (mV) Efficiency (%) 25 10 Vin (V) 20 Vo=1.8V Vo=1.5V 30 34 10 Vin (V) Efficiency Vs Vin (Full Load) 30 34 20 Ripple Vs Vin (full load) 100 Vo=15V Vo=12V Vo=5V Vo=3.3V 50 Vo=1.8V Vo=1.5V Vo=12V Vo=15V Vo=9V Vo=5V Vo=3.3V Vo=1.8V Vo=1.5V 25 Efficiency (%) Ripple (mV) 50 0.1 0.2 0.3 0.4 0.5 0.6 0.1 Output Current ( A ) Ripple (mV) Efficiency (%) 50 0.4 0.5 0.6 20 Vo=15V 15 Vo=12V 10 Vo=1.8V Vo=3.3, 9V Vo=5V Vo=1.5V 5 0.1 0.6 0.2 0.3 0.4 0.5 0.6 Output Current ( A ) Output Current ( A ) Ripple Vs Load ( Vin=Min ) Efficiency Vs Load ( Vin=Min ) www.recom-international.com 0.5 25 Vo=12,15V Vo=5V Vo=3.3V Vo=1.8V Vo=1.5V 0.3 0.4 Ripple Vs Load ( Vin=24V ) 100 0.2 0.3 Output Current ( A ) Efficiency Vs Load ( Vin=Max ) 0.1 0.2 27-March-2007 145 R-78Axx-0.5 SMD Series INNOLINE DC/DC-Converter Application Examples Flash Memory Program Voltage Switcher Pgm R-78A12-0.5SMD +Vin 20kW D1 Reprogrammable Flash Memory C1 220kW 0V Program 0V D2 D1, D2: schottky Diode "Program" = 0V, Pgm Pin = +5V "Program" = high, Pgm Pin = +12,6V Output protection from external voltage +Vin Vout = 5.0V R-78A5.0-0.5SMD 68kW On/Off -Vin Com Converter Output set to 5.7V to compensate for diode drop DC/DC Converter ( 1:1 ) +Vin R-78Axx-0.5SMD C1 -Vin C2 - High isolation voltage - Improved loading / line regulation - Wide Input Voltage Range - Point-of-Load Architecture - Remote On/Off Control 146 +Vout On/Off -Vout C1: Required (further decoupling filtering may be necessary between the two converters), C2: Optional 27-March-2007 www.recom-international.com R-78Axx-0.5 SMD Series INNOLINE DC/DC-Converter Table 1: Adjustment Resistor Values 0.5Adc R-78A1.8 -0.5SMD Vout (nom.) 1.8Vdc Vout (adj) R1 1.5 (V) 3KΩ R2 R-78A2.5 -0.5SMD R-78A3.3 -0.5SMD R-78A5.0 -0.5SMD 2.5Vdc 3.3Vdc 5.0Vdc R1 R2 R1 R2 R1 R2 R-78A6.5 R-78A12 R-78A9.0 -0.5SMD -0.5SMD 6.5Vdc R1 -0.5SMD 9.0Vdc R2 R1 12.0Vdc R2 R1 R2 200Ω 1.8 (V) 12KΩ 2.5 (V) 12KΩ 3.0 (V) 4.7KΩ 50KΩ 3.3 (V) 2.7KΩ 29KΩ 21KΩ 5.6KΩ 88.4KΩ 17KΩ 27KΩ 6.7KΩ 3.6 (V) 19.4KΩ 69KΩ 42KΩ 14KΩ 3.9 (V) 14kΩ 30.5KΩ 58KΩ 23KΩ 4.5 (V) 8kΩ 12.1kΩ 180KΩ 49KΩ 26KΩ 17KΩ 4.9 (V) 7.6kΩ 850KΩ 77kΩ 36KΩ 24KΩ 5.0 (V) 6.8kΩ 86kΩ 39KΩ 26KΩ 5.1 (V) 6.2kΩ 540kΩ 97KΩ 42KΩ 28KΩ 5.5 (V) 4kΩ 71kΩ 160KΩ 56KΩ 36KΩ 112KΩ 63KΩ 400KΩ 125KΩ 6.5 (V) 20.2kΩ 8.0 (V) 7.2kΩ 26KΩ 9.0 (V) 11.3KΩ 10 (V) 5.2KΩ 11 (V) 1.8KΩ 200KΩ 59KΩ 345KΩ 18.5KΩ 740KΩ 12 (V) 5.2KΩ 12.6 (V) 830KΩ 216KΩ Package Style and Pinning (mm) SMD 10Pin Package 3rd angle projection 9.30 15.24 14.84 7.05 1.65 10 9 8 7 6 9.00 RECOM R-78Axx-0.5SMD xxxx 9.00 1 2 3 4 5 8.60 10.00 2.54x4 Pin Connections 11.80 Recommended Footprint Details 0.55 13.00 Bottom View 2.54 1.20 www.recom-international.com 10 9 8 7 6 1.20 Top View 1 2 3 4 5 1.80 27-March-2007 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 147