UNR-1.8/10-D5SM-C Ver la hoja de datos (PDF) - Unspecified

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UNR-1.8/10-D5SM-C

Single Output, Non-Isolated, 5 or 12VIN to 1.8/2.5/3.3VOUT 8 and 10 Amp DC/DC Converters

Unspecified 

www.murata-ps.com

UNR D5/D12 Series

Single Output, Non-Isolated, 5 or 12VIN to 1.8/2.5/3.3VOUT

8 and 10 Amp DC/DC Converters

Features

 Input ranges of 4.75-5.5V or 10.8-13.6V

 Output voltages of 1.8/2.5/3.3V

 8 and 10 Amp output current models

 VOUT user-trimmable from 1.28V to 3.6V

 Non-isolated, full synchronous topology

 1" x 2" through-hole or SMT package

 Gull-wing leads for SMT package

 High efficiency to 91%; Low noise

 200kHz switching; Planar magnetics

 –40 to +40/50/60°C ambient operation with

no derating

 Remote on/off control; Output overcurrent

detection

 IEC950/EN60950/UL1950 approval

OBSOLETE PRODUCT

As supply voltages trend lower and load currents increase, centralized power

becomes more imLpraacstitcatl.iTmheetigbhtuaycc:u3racMy, laowrcnohise2a0n1d 4quick transient

Click here for more information. response demanded by today's low voltage CPU's, ASIC's and DSP's make power

processing at the point of use the only viable solution. The UNR 18-33W series pro-

vides a complete line of non-isolated DC/DC converters to satisfy this requirement.

With input voltages of 5V (-D5 models) and 12V (-D12 models) these converters

offer standard output voltages of 1.8, 2.5 and 3.3 Volts and up to 10 Amps of output

current in both through-hole and surface-mount 1" x 2" metal cases.

With on/off control and output voltage trim capability as standard features, these

non-isolated converters exploit full synchronous rectification, planar magnetics, and

100% automated assembly to deliver high efficiencies (to 91%) and low noise at low

cost.

These versatile DC/DC’s are fully line and load regulated. They feature quick

transient response (50µsec), user-optional on/off control (for power sequencing),

and output overcurrent detection and shutdown ("hiccup" technique with auto-recov-

ery). 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 regula-

tors 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

ON/OFF

CONTROL

　

For full details go to

www.murata-ps.com/rohs

OUTPUT

RETURN

VOLTAGE

BOOST ➀

+VCC

OVERCURRENT

DETECTION

PWM

CONTROLLER

REFERENCE &

ERROR AMP

Figure 1. Simplified Schematic

➀ -D5 models only.

VOUT

TRIM

Typical topology is shown.

www.murata-ps.com/support

UNR18-33W.C01 Page 1 of 9

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