Efficiency up to 95%, no need for heatsinks Industry standard pin-out Features 1.5A start-up overload capacity DC/DC Converter Non-isolated regulator, very low standby current Wide input range (7V -74VDC) Switching Short circuit protection Fixed swiching frequency (250kHz), shielded Regulator R-78T-1.0 magnetics Description 1.0 Amp The R-78T is a switching regulator with a wide input voltage range and a low profile SMD package. SMD Three output voltages are available as standard: 3.3V, 5V and 12V. Due to the 1.5A start-up overload capability, the R-78T can be used to replace 1A or 1.5A regulators in many applications. These modules come with three different styles to be pin-compatible with existing solutions, but at a lower cost. Single Output Selection Guide Part Input Output Output Efficiency Number Voltage Range Voltage Current min Vin max. Vin VDC VDC mA % % R-78T3.3-1.0 7 - 42 3.3 1000 88 79 R-78T5.0-1.0 8 - 42 5.0 1000 92 85 R-78T12-1.0 15 - 42 12 1000 95 92 Model Numbering R-78T -1.0/ - (1) Output Voltage Packaging (2) Output Current Pinning Notes: Note1: add suffix -R for tape & reel packaging or -Tray for tray packaging Note2: add suffix /FC, /AC or /AL for required pinning option, for more information see page I-5 to I-6 Ordering Examples: R-78T3.3-1.0/FC-R = 3.3VDC Output Volage, 1.0A, FC pinning, tape and reel packaging R-78T5.0-1.0/AC-Tray = 5.0VDC Output Voltage, 1.0A, AC pinning, tray packaging www.recom-power.com REV.: 2/2018 I-1R-78T-1.0 DC/DC Converter Series Specifications (measured Ta= 25C, 10% minimum load, unless otherwise stated) BASIC CHARACTERISTICS Parameter Condition Min. Typ. Max. Internal Input Filter C filter nom. Vin= 3.3VDC 7VDC 42VDC Input Voltage Range nom. Vin= 5.0VDC 8VDC 42VDC nom. Vin= 12VDC 15VDC 42VDC (3) 150%, 10s Overload Capability peak duty cycle 10% 1mA Quiescent Current Minimum Load 10% Internal Operating Frequency 350kHz Output Ripple and Noise 20MHz BW 50mVp-p 100mVp-p Notes: Note3: For more inforation, please refer to Overload Capability Graph on page I-4 R-78T3.3-1.0 Efficiency vs. Load Ripple vs. Load 100 45 90 40 80 35 70 30 60 25 50 20 40 15 7Vin 30 12Vin 10 24Vin 20 24Vin 36Vin 36Vin 5 42Vin 10 42Vin 0 0 0 10 20 30 40 50 60 70 80 90 100 10 20 30 40 50 60 70 80 90 100 Output Load % Output Load % R-78T5.0-1.0 Efficiency vs. Load Ripple vs. Load 100 45 90 40 80 35 70 30 60 25 50 20 40 15 8Vin 30 12Vin 10 24Vin 20 24Vin 36Vin 36Vin 5 10 42Vin 42Vin 0 0 0 10 20 30 40 50 60 70 80 90 100 10 20 30 40 50 60 70 80 90 100 Output Load % Output Load % continued on next page www.recom-power.com REV.: 2/2018 I-2 Efficiency % Efficiency % Ripple & Noise mVp-p Ripple & Noise mVp-p