UEI25 Series www.murata-ps.com Single Output Isolated 25-Watt DC/DC Converters Output (V) Current (A) Nominal Input (V) 3.3 7.5 48 Typical unit 55 48 12 2.1 48 FEATURES PRODUCT OVERVIEW Cost effective small footprint DC/DC converter, Featuring a full 25 Watt output in one square inch offer fast settling to step transients and will accept ideal for high current applications of board area, the UEI25 series isolated DC/DC higher capacitive loads. Excellent ripple and noise converter family offers ef cient regulated DC power speci cations assure compatibility to noise-sus- Industry standard 0.96 x 1.1 x 0.32 open for printed circuit board mounting. The 0.96 x 1.1 ceptible circuits. For systems requiring controlled frame package and pinout x 0.32 (24.4 x 27.9 x 8.1 mm) converter accepts a startup/shutdown, an external remote On/Off control Input voltage range of 36-75 Vdc 2:1 input voltage range of 36 to 75 Volts DC, ideal may use a switch, transistor or digital logic. for telecom equipment. The industry-standard pin- A wealth of self-protection features avoid both 3.3V, 5V, or 12Vdc xed output voltages out ts larger 1 x 2 converters. The xed output converter and external circuit faults. These include Isolation up to 2250 VDC (basic) voltage is tightly regulated. Applications include input undervoltage lockout and overtemperature Up to 25 Watts total output power with exten- small instruments, area-limited microcontrollers, shutdown. The outputs current limit using the sive self-protection shutdown features data communications equipment, remote sensor hiccup autorestart technique and the outputs are systems, telephone equipment, vehicle and portable short-circuit protected. Additional features include High ef ciency synchronous recti er forward electronics. output overvoltage and reverse conduction elimina- topology up to 91% The UEI25 series includes full magnetic and tion. The high ef ciency offers minimal heat buildup Stable operation with no required external optical isolation with Basic protection up to 2250 and no fan operation. components Volts DC. For powering digital systems, the outputs Usable -40 to 85C temperature range (with derating) Certi ed to UL 60950-1, CAN/CSA-C22.2 No. 60950-1, IEC60950-1, EN60950-1 safety approvals, 2nd edition F1 +Vin (1) *TPMB UJPO +Vout (3) Barrier t 4XJUDIJOH External t JMUFST On/Off DC Control Controller Power t VSSFOU 4FOTF and Power (6) Source SBOTGFS5 Open = On Reference and MPTFE 0GG Error Amplier 1 PTJUJWF Trim (4) MPHJD -Vin (2) -Vout (5) Figure 1. Connection Diagram Typical topology is shown. Murata Power Solutions recommends an external fuse. For full details go to www.murata-ps.com/rohs REG.-Nr. D806 www.murata-ps.com/support MDC UEI25W.B09 Page 1 of 24UEI25 Series Single Output Isolated 25-Watt DC/DC Converters PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE Output Input R/N (mVp-p) Regulation (Max.) IIN, IIN, Ef ciency Package, C75 IOUT Total VIN min. full VOUT (A, Power Nom. Range load load Root Models (V) max) (W) Typ. Max. Line Load (V) (V) (mA) (A) Min. Typ. Case (inches) Case (mm) Pinout UEI25-033-D48 3.3 7.5 25 50 80 0.1% 0.2% 48 36-75 75 0.58 87.0% 89.5% 0.96x1.1x0.32 24.4x27.9x8.1 P85 UEI25-050-D48 5 5 25 50 80 0.1% 0.2% 48 36-75 30 0.57 89.0% 91% 0.96x1.1x0.32 24.4x27.9x8.1 P85 UEI25-120-D48 12 2.1 25.2 95 120 0.1% 0.1% 48 36-75 20 0.6 86.0% 87.5% 0.96x1.1x0.32 24.4x27.9x8.1 P85 Notes: Please refer to the part number structure for additional options and complete order- Output capacitors are 1 F ceramic in parallel with 10 F electrolytic. The input cap ing part numbers. is 4.7 F ceramic, low ESR. Ripple and Noise is shown at 20 MHz bandwidth. I/O caps are necessary for our test equipment and may not be needed for your ap- All speci cations are at nominal line voltage and full load, +25 C. unless otherwise plication. Minimum load is 10% for rated speci cations. noted. See detailed speci cations for full conditions. PART NUMBER STRUCTURE UEI25 - 033 - D48 P M Lx - C Unipolar Output Isolated RoHS-6 Hazardous Substance Compliance 25-Watt Series (Does not claim EU RoHS exemption 7b, lead in solder) Nominal Output Voltage Pin Length Option (through-hole only) in Tenths of a Volt Blank = Std. pin length 0.25 (6.3mm) L1 = 0.110 (2.79mm) L2 = 0.145 (3.68mm) Input Voltage Range Surface Mount Option D48 = 36-75 Vdc Blank = Through-hole mount M = Surface mount (MSL rating 2) On/Off Control Logic: P = Positive N = Negative Special quantity order is required samples available with standard pin length only. SMT (M) versions not available in sample quantities. Some model number combinations may not be available. See website or contact your local Murata sales representative. www.murata-ps.com/support MDC UEI25W.B09 Page 2 of 24