R-78K-1.0
8Pages

• Efficiency up to 95%, no need for heatsinks • 4.5 - 36VDC wide input voltage • -40°C to +90°C ambient operation without derating • Pin compatible with 78 series regulators • Non isolated DC/DC converter • Undervoltage and short circuit protection Features Switching Regulator Description The R-78K-1.0 series is a switching regulator module that has been designed to offer all the advantages of a switching regulator (high efficiency, wide input range, accurate output voltage regulation) but with a low cost for production quantities. Due to the R-78K-1.0’s high efficiency of up to 95% no heat-sink is required, and operation from -40 to 90°C is possible with slight derating. The compact TO-220 compatible SIP3 package measures only 11.5 x 7.55 x 10.2mm, so it saves precious board space. DC/DC Converter Selection Guide Efficiency @ min. Vin @ max. Vin [%] [%] 83 71 75 79 REACH compliant Input Voltage Range [VDC] 4.5 - 36 Part Number IEC/EN62368-1 3rd Edition certified EN55032 compliant CB-Report Model Numbering Output Current Output Voltage Specifications ABSOLUTE MAX RATINGS (exceeding these ratings may damage the device) Parameter Maximum Input Voltage Slew Rate (1) Case Temperature Storage Temperature Notes: Note1: At higher slew rates or hard plugging, add 27µF E-Cap between +Vin and GND, especially when Vin is >18VDC www.recom-power.co

DC/DC Converter Specifications (measured @ Ta= -40°C to +90°C, V = 24VDC, full load and after warm-up unless otherwise stated) BASIC CHARACTERISTICS Parameter R-78K5.0-1.0 Input Under Voltage Lockout (UVLO) Internal Switching Frequency Minimum Load Output Ripple and Noise Power Dissipation vs. Load 0.8 Output Load [%] continued on next page www.recom-power.com

DC/DC Converter Specifications (measured @ Ta= -40°C to +90°C, V R-78K2.5-1.0 = 24VDC, full load and after warm-up unless otherwise stated) Power Dissipation vs. Load 0.8 Output Load [%] Power Dissipation vs. Load 0.9 Output Load [%] Power Dissipation vs. Load 0.8 Output Load [%] continued on next page www.recom-power.com

DC/DC Converter Specifications (measured @ Ta= -40°C to +90°C, V R-78K9.0-1.0 = 24VDC, full load and after warm-up unless otherwise stated) Power Dissipation vs. Load 1.2 Output Load [%] Power Dissipation vs. Load 1.2 Output Load [%] Power Dissipation vs. Load 1.2 Output Load [%]

DC/DC Converter Specifications (measured @ Ta= -40°C to +90°C, V = 24VDC, full load and after warm-up unless otherwise stated) REGULATIONS Parameter Output Accuracy Line Regulation low line to high line, full load Load Regulation PROTECTIONS Parameter Short Circuit Protection (SCP) continuous, automatic recovery Short Circuit Input Current Optional Diode Protection Circuit 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. The diode can either be fitted across the device if the source is low impedance or...

DC/DC Converter Specifications (measured @ Ta= -40°C to +90°C, V = 24VDC, full load and after warm-up unless otherwise stated) Derating Graph (@ Chamber and natural convection 0.1m/s, over Vin) Output Load [%] Output Load [%] Output Load [%] Output Load [%] Output Load [%] Output Load [%]

DC/DC Converter Specifications (measured @ Ta= -40°C to +90°C, V = 24VDC, full load and after warm-up unless otherwise stated) SAFETY AND CERTIFICATIONS Certificate Type (Safety) Report Number Audio/Video, information and communication technology equipment - Part 1: Safety requirements (CB Scheme) Audio/Video, information and communication technology equipment - Part 1: Safety requirements Electromagnetic compatibility of multimedia equipment - Emission requirements Standard / Criterion with external filter EMC filtering suggestions according to EN55032 C2 L1 Component List Class B for...

DC/DC Converter Specifications (measured @ Ta= -40°C to +90°C, V = 24VDC, full load and after warm-up unless otherwise stated) PACKAGING INFORMATION Parameter Packaging Dimension (LxWxH) Packaging Quantity Storage Temperature Range Storage Humidity