OKI-78SR-E Series Encapsulated Non-Isolated Switching Regulator DC-DC Typical units FEATURES PRODUCT OVERVIEW Encapsulated in a 0.47 x 0.69 inch (11.9 x Three nominal output voltages are offered (3.3, 7-36Vin (3.3 & 5Vout), 15-36Vin (12Vout) 17.6 mm) vertical or horizontal package, the OKI- 5 and 12 VDC), up to 1.5 Amp maximum output. Fixed Output: 3.3 or 5V 1.5A or 12V 1.0A 78SR-E series are non-isolated switching Based on xed-frequency buck switching Vertical SIP or horizontal mount, small footprint, regulator (SR) DC-DC power converters for topology, the high efciency means very low heat in an Encapsulated package embedded applications. The xed single output and little electrical noise, requiring no external converters offer both tight regulation and high components. The 3.3 and 5Vout models have an No heat sink direct replacement for 3-terminal efciency directly at the power usage site and are ultra wide input range of 7 to 36 Volts DC and the 78xx-series linear regulators a direct plug-in replacement for TO-220 package 12Vout model has an input voltage range of 15 to High efciency with no external components 78xx series linear regulators. Typically, no extra 36V. Short circuit protection outside components are required. Protection features include short circuit Outstanding thermal derating performance current limit protection. The OKI-78SR-E is UL/EN/IEC 60950-1, 2nd Edition safety approvals designed to meet all standards approvals. RoHS-6 (no lead) hazardous material compliance is specied as standard. Connection Diagram +Vin +Vout Switching F1 Filters Controller Current Sense External DC Power Reference and Source Error Amplier Common Common Figure 1. OKI-78SR-E Note: Murata Power Solutions strongly recommends an external input fuse, F1. See specications. (Pending) For full details go to www.murata-ps.com/rohs www.murata-ps.com/support MDC OKI-78SR-W36E.A01 Page 1 of 20 OKI-78SR-E Series Encapsulated Non-Isolated Switching Regulator DC-DC FUNCTIONAL SPECIFICATIONS SUMMARY AND ORDERING GUIDE Output Input IOUT R/N (mVp-p) Regulation (Typ.) IIN, IIN, Efficiency VOUT (Amps Power VIN Nom. Range no load full load Package Root Model (Volts) max) (Watts) Max. Line Load (Volts) (Volts) (mA) (Amps) Min. Typ. Inches (mm) 0.47 x 0.40 x 0.69 OKI-78SR-3.3/1.5-W36E-C 3.3 1.5 4.95 40 0.30% 0.40% 12 7-36 5 0.48 84% 85.5% (11.9 x 10.0 x 17.6) 0.47 x 0.40 x 0.69 OKI-78SR-5/1.5-W36E-C 5 1.5 7.5 75 0.30% 0.40% 12 7-36 5 0.69 89% 90.5% (11.9 x 10.0 x 17.6) 0.47 x 0.40 x 0.69 OKI-78SR-12/1.0-W36E-C 12 1.0 12 75 0.25% 0.25% 24 15-36 5 0.53 93.5% 95.3% (11.9 x 10.0 x 17.6) NOTE: All specifications are at nominal line voltage, Vout = nominal and full load, +25C.with no external capacitor, unless otherwise noted. NOTE: Please click here to view the data sheet for the OKI-78SR Open-frame series. www.murata-ps.com/support MDC OKI-78SR-W36E.A01 Page 2 of 20