Features ● ● ● ● ● INNOLINE Low Profile 4.5mm Low Cost Wide Input Range (5V - 36V) Short Circuit Protection Castellated Connections DC/DC-Converter Selection Guide Part Number Input Range (VDC) Output Voltage (VDC) Output Current (mA) Efficiency ROF-78E3.3-0.5SMD 5 - 36 3.3 500 73 - 84 ROF-78E5.0-0.5SMD 9 - 36 5.0 500 79 - 87 (%) Non Isolated Power Module Specifications (measured at Ta=25°C, Full Load after Warm-Up) Input Voltage Range 5 - 36 VDC (12/24V typ) No Load Input Current 5mA max. Maximum Input Current 0.5A max. Short Circuit Input Current 200mA max. Voltage Accuracy ±5% max. Line Regulation (LL to HL at Full Load) ±1% max. Load Regulation (10 ~ 100%) ±3% max. Minimum Load* Ripple & Noise (20MHz Limited) Transient Response 100% ~ 50% Load ±100mV (20MHz Limited) 100% ~ 10% Load ±200mV 100mV max. Operating Frequency ROF-78E 650KHz typ. ON/OFF Enable Pin ON: Open or >1.75V (max. Input Voltage = 5V) OFF: GND or <0.7V Current Limit 950mA typ. Short Circuit Protection Auto Recovery Operating Temperature -40°C ~ 75°C Storage Temperature Derating-Graph (Ambient Temperature) -55°C ~ 125°C Humidity 95% RH DImension (L x W x H) (Ambient Temperature Vin=24V) 12.5 x 13.5 x 4.5 mm 1g Cooling Method Free Air Convection MIL-HDBK-217F 700 x 10³ hours *Operation at no load will not damage these devices, but they may not meet all of the datasheet specifications. Output Power (%) Weight MTBF (25°C) RoHS 2002/95/EC 6/6 10% 110 100 90 80 70 60 50 40 30 20 10 20 www.recom-electronic.com REV:0/2012 40 60 80 100 75 Operating Temperature (°C) I-51 ROF-78Exx-0.5SMD Series INNOLINE DC/DC-Converter Characteristics 100 90 80 70 60 50 40 30 20 10 0 5V 12V 24V 36V Efficiency (%) Efficiency (%) Efficiency 0 20 40 60 80 100 100 90 80 70 60 50 40 30 20 10 0 9V 12V 24V 36V 0 20 Load (%) 40 60 80 100 Load (%) ROF-78E3.3-0.5SMD ROF-78E5.0-0.5SMD 100 90 80 70 60 50 40 30 20 10 0 36V 24V 12V 5V 0 20 40 60 80 100 Load (%) Ripple (mV) ROF-78E Ripple (mV) Ripple 100 90 80 70 60 50 40 30 20 10 0 36V 24V 12V 9V 0 20 40 60 80 100 Load (%) ROF-78E3.3-0.5SMD ROF-78E5.0-0.5SMD Applications Standard Application Circuit Enable Pin +Vin ROF-78Exx0.5SMD -Vin I-52 +Vo -Vo REV:0/2012 www.recom-international.com ROF-78Exx-0.5SMD Series INNOLINE DC/DC-Converter Applications Application Examples High efficiency, isolated, dual unregulated outputs DC/DC Converter (1:1) ROF-78EXX0.5SMD +Vin Enable +Vo C1 COM -Vin -Vo *Isolated dual output *Wide Input Range Isolated (Up to 6KV), wide input range regulated output +24V REC5-4812DRWZ/H6/A/SMD ROF-78E3.30.5SMD +Vin +3.3V EN R1 C1 C3 -Vin ROF-78E R2 C2 -Vo *High Isolated voltage *Improved loading / line regulation *Wide Input voltage range *Point-of-Load Architecture V Power Sequencing 24V 3.3V t Optional Protection Circuit Schottky Diode +Vin ROF-78EXX0.5SMD -Vin Vout Vout= +Vo - Vsd forward -Vo Add a blocking diode to Vout if current can flow backwards into the output, as this can damage the converter when it is powered down. www.recom-electronic.com +Vin -Vin ROF-78EXX0.5SMD Vout -Vo The diode can either be fitted across the device if the source is low impedance or fitted in series with the output. REV:0/2012 I-53 ROF-78Exx-0.5SMD Series INNOLINE DC/DC-Converter Applications Conduction / Radiation Emission Filter Suggestion Suggestion for conduction Emission Class A, meet radiation emission Class B Ls = 33uH ROF-78EXX0.5SMD +Vin +Vo C2 = 1uF C1 = 1uF -Vo -Vin The capacitors used are ceramic capacitors, rated voltage 50V Package Style and Pinning (mm) ROF-78EXX-0.5SMD Surface Mount Package 3rd angle projection 12.50 13.50 2 ROF-78E TOP VIEW 1 BOTTOM VIEW 3.5 4 2.00 3 1.00 Recommended Footprint Details 2.00 Pin Connections 2.50 2.50 0.25 0.25 Pin # Out 1 +Vin 2 GND 3 +Vout 4 EN XX.X ± 0.5 mm XX.XX ± 0.25 mm I-54 REV:0/2012 www.recom-international.com