UM6421

UMEC SMPS SPECIFICATION ; PRELIMINARY … OFFICIAL UMEC P/N: UM6400 SERIES DATE: 06-15-’04 REV. NO.: E APPROVAL CHECK BY DESIGN BY UNIVERSAL MICROELECTRONICS UM6400 1 of 3 2539 W. 237TH STREET, STE: A TORRANCE, CA 90505 USA TEL: 310-326-7072 FAX: 310-326-7058 REV.E UM6400 SERIES 9-15Watt DC-DC Converter ♦ Synchronous Rectifier Topology ♦ Surface Mount Technology ♦ Remote On/Off Control ♦ Safety Approvals Pending (EN60950, UL/cUL, TUV and CE) SPECIFICATIONS All specifications are typical at nominal line, full load at 25°C unless otherwise noted. INPUT SPECIFICATIONS Input Voltage Range …………..… 24V Nominal, 18-36 VDC 48V Nominal, 36-75 VDC Input Filter …………………………………….…… Pi Network Turn on Voltage Threshold, I/P: 24V ………….…… 17V typ. I/P: 48V …………….… 35V typ. Input under Voltage Shutdown, I/P: 24V ……….... 16V max. I/P: 48V …………. 34V max. Input Transient withstand (Transient Duration: 10...