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UNR-1810-D3T

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UNR D3 SERIES www.murata-ps.com Single Output, Non-Isolated, 3.3VIN to 1.5/1.8/2.5VOUT 8 and 10 Amp DC/DC Converters OBSOLETE PRODUCT Last time buy: 3 March 2014 Click logic are demanding more 1.5V, 1.8V or 2.5V If your DSP and CPLD corehere for more information. Features ■ 3.0-3.6V input range; Non-isolated ■ 1.5V, 1.8V or 2.5V output @ 10A ■ 2" x 1" through-hole or SMT package ■ Gull-wing leads for SMT package ■ Full synchronous-rectifier topology ■ 300kHz switching; Planar magnetics ■ High efficiency, to 89% ■ Low noise, 80mVp-p ■ Quick transient response, 25µsec ■ VOUT user-trimmable from 1.28V to 3V ■ –40 to +50/55°C ambient operation with no derating ■ Remote on/off control; Output overcurrent detection ■ IEC950/EN60950/UL1950 pending EMC compliant current from your 3.3V system, don’t pay to derive more isolated power from your intermediate dc bus. Murata Power Solutions’ new, 3.3V-input, UNR "D3" models derive 10 Amps of low-voltage current right from your 3.3V supply. These non-isolated power converters exploit full synchronous rectification, planar magnetics, and 100% automated assembly to deliver high efficiencies (to 89%), low noise (typically 80mVp-p), and low costs. Housed in 1" x 2" shielded metal cases, UNR D3’s offer standard through-hole ("T" models) or SMT ("SM" models) packaging. The new "gull-wing" SMT packages (with metal shells and non-conductive plastic baseplates) weigh less than 40 grams and can withstand peak lead temperatures up to +300°C. These versatile DC/DC’s are fully line (±0.1% max.) and load (±0.5% max.) regulated. They feature quick transient response (25µsec), user-optional on/off control (for power sequencing), and output overcurrent detection and shutdown ("hiccup" technique with auto-recovery). Their impressive guaranteed efficiencies enable them to deliver fully rated output power from –40 to +50/55°C (ambient) without supplemental cooling. If your high current requirements have made the use of inefficient linear regulators impractical, take a look at one of Murata Power Solutions’ new switching buck regulators. Their high efficiency, ease-of-use, long-term reliability, and overall cost effectiveness will impress you. Safety agency approvals and EMC characterizations are currently in progress. +VIN +VOUT INPUT RETURN LOGIC GROUND OUTPUT RETURN VOLTAGE BOOST OVERCURRENT DETECTION +VCC ON/OFF CONTROL PWM CONTROLLER REFERENCE & ERROR AMP VOUT TRIM Figure 1. Simplified Schematic Typical topology is shown.   For full details go to www.murata-ps.com/rohs www.murata-ps.com/support MDC_UNR15-25W.C01 Page 1 of 8

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