● ● ● ● ● Features INNOLINE Low Profile 4.5mm Low Cost Wide Input Range (5V - 36V) Short Circuit Protection Castellated Connections DC/DC-Converter with 3 year Warranty Selection Guide Part Number ROF-78E3.3-0.5SMD* Input Range (VDC) Output Voltage (VDC) Output Current (mA) Efficiency 5 - 36 3.3 500 73 - 84 500 79 - 87 ROF-78E5.0-0.5SMD* 9 - 36 5.0 * add Suffix „-R“ for tape & reel packing - e.g. ROF78Exx-0.5SMD-R 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* ROF-78E 10% Ripple & Noise (20MHz Limited) Transient Response 100% ~ 50% Load ±100mV (20MHz Limited) 100% ~ 10% Load ±200mV 100mV max. Operating Frequency 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 ~ 85°C Storage Temperature Derating-Graph (Ambient Temperature) (Ambient Temperature Vin=24V) -55°C ~ 125°C Humidity 95% RH 12.5 x 13.5 x 4.5 mm Weight 1g Cooling Method Free Air Convection MIL-HDBK-217F 3500 x 10³ hours *Operation at no load will not damage these devices, but they may not meet all of the datasheet specifications. Output Power (%) DImensions (L x W x H) MTBF (25°C) RoHS 2011/65/EU 6/6 110 100 90 80 70 60 50 40 30 20 10 20 40 60 80 100 75 85 Operating Temperature (°C) Refer to Application Notes www.recom-power.com REV: 0/2015 I-37 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 Ripple (mV) ROF-78E Ripple (mV) Ripple 36V 24V 12V 5V 0 20 40 60 80 100 Load (%) 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-38 +Vo -Vo REV: 0/2015 www.recom-power.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 +Vo Enable 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 +Vin Vout= +Vo - Vsd forward -Vin -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-power.com 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: 0/2015 I-39 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 -Vin -Vo The capacitors used are ceramic capacitors, rated voltage 50V Package Style and Pinning (mm) ROF-78EXX-0.5SMD Surface Mount Package TOP VIEW 12.50 2 13.50 ROF-78E 1 BOTTOM VIEW 3.5 4 2.00 3 1.00 2.00 Recommended Footprint Details 2.50 2.50 0.25 Pin Connections 0.25 Pin # Out 1 +Vin 2 GND 3 +Vout 4 EN XX.X ± 0.5 mm XX.XX ± 0.25 mm The product information and specifications are subject to change without prior notice. RECOM products are not authorized for use in safety-critical applications (such as life support) without RECOM’s explicit written consent. A safety-critical application is defined as an application where a failure of a RECOM product may reasonably be expected to endanger or cause loss of life, inflict bodily harm or damage property. The buyer shall indemnify and hold harmless RECOM, its affiliated companies and its representatives against any damage claims in connection with the unauthorized use of RECOM products in such safety-critical applications. I-40 REV: 0/2015 www.recom-power.com