unr-3.3-12-d5 Murata Manufacturing Co., Ltd, unr-3.3-12-d5 Datasheet

unr-3.3-12-d5

Manufacturer Part Number

unr-3.3-12-d5

Description

Single Output, Non-isolated, 5v-to-2.5v 12 Amp, Dc/dc Converters

Manufacturer

Murata Manufacturing Co., Ltd

Datasheet

1.UNR-3.3-12-D5.pdf (4 pages)

Current page: 1 of 4
Download datasheet (470Kb)

www.murata-ps.com

Signals applied to the On/Off Control are referenced to Logic Ground

which is internally connected to Input/Output Return. The Logic

Ground pin is not designed to carry heavy current. Do not install units

with the Return pins open or connected via high-impedance runs.

Features



Low cost!

+4.75V to +5.5V input

+2.5V (±25mV), 12 Amp output

200kHz, synchronous-rectifier topology

High efficiency, 87%

Low output noise, 40mVp-p

Quick transient response, 30µsec

–40 to +50°C operation with no derating

Highly reliable, 100% SMT construction

Remote on/off control

Output short-circuit protection

1" x 2" metal package; EMC compliant

IEC950/EN60950/UL1950 pending

Modifications and customs for OEM’s

www.murata-ps.com/rohs

For full details go to

CONTROL

GROUND

RETURN

ON/OFF

LOGIC

INPUT

becomes more impractical. The tight accuracy, low noise and quick transient

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. As voltages decrease much

below 3.3V, the task of designing your own circuit to efficiently derive low-voltage

power from higher-voltage buses (5V, 12V, 48V, etc.) becomes significantly more

challenging.

Murata Power Solutions’ new UNR-2.5/12-D5. This non-isolated, 5V-to-2.5V DC/

DC delivers a full 12 Amps at an impressive 87% efficiency. Packaged in a 1" x 2" x

0.44" metal case, the converter exploits synchronous rectification, planar magnetics

and 100% automatic SMT assembly to bring you an incomparable 30 Watts of 2.5V

power.

range without heat sinking or forced-air cooling. It is fully line (±0.1%) and load

(±0.5%) regulated and features low noise (40mVp-p) and quick (30µsec) transient

response. The unit offers remote on/off control, and it can withstand a sustained

output short circuit with full recovery to rated accuracy.

power applications. When you need 12 Amps, the task becomes significantly more

time consuming. Consider that the high efficiency, ease-of-use, and overall cost

effectiveness of Murata Power Solutions’ new 2.5V UNR Series make the quick

solution the best solution.

CONTROLLER

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

When you are designing power-hungry 2.5V partitions or boards, consider

The UNR-2.5/12-D5 delivers full power over the –40 to +50°C temperature

Designing your own 2.5V step-down buck regulator may be practical for low-

PWM

Figure 1. Simplified Schematic

Single Output, Non-Isolated, 5V-to-2.5V

OVERCURRENT

DETECTION

REFERENCE &

ERROR AMP

Technical enquiries email: sales@murata-ps.com, tel:

12 Amp, DC/DC Converters

OUTPUT

RETURN

UNR SERIES

OUT

UNR30-40W.B01 Page 1 of 4

+1 508 339 3000

Related parts for unr-3.3-12-d5

unr-3.3-12-d5 Summary of contents

Page 1

... Designing your own 2.5V step-down buck regulator may be practical for low- power applications. When you need 12 Amps, the task becomes significantly more time consuming. Consider that the high efficiency, ease-of-use, and overall cost effectiveness of Murata Power Solutions’ new 2.5V UNR Series make the quick solution the best solution. OVERCURRENT ...

Page 2

... It can (@V = +2.0V METAL CASE INSULATED BASE PINS 1-2: 0.040 ±0.002 (1.016 ±0.051) PINS 3-6: 0.062 ±0.002 (1.575 ±0.051) 0.10 (2.54) 3 1.00 4 (25.40) 0.400 5 (10.16) 6 0.200 (5.08) Note: The case is connected to pin 5 (Input Return). +1 508 339 3000 UNR30-40W.B01 Page ...

Page 3

... When you need 12 Amps, the task becomes significantly more challenging and time consuming. It’s time to consider the high efficiency, ease-of- use, and overall cost effectiveness of Murata Power Solutions' UNR Series. Safety agency approvals and full EMI characterizations are currently in progress. ...

Page 4

... I/O Connections Pin Function P9 1 Logic Ground 2 On/Off Control Note: 3 +Output 4 Output Return The case is connected to pin 5 (Input Return). 5 Input Return 6 +Input Non-Isolated, 5V-to-3.3V, 40 Watt, DC/DC Converter, non-RoHS version RoHS version Technical enquiries email: sales@murata-ps.com, tel: UNR30-40W.B01 Page 508 339 3000 ...

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