UNR-3.3/3-D5 Murata Power Solutions Inc, UNR-3.3/3-D5 Datasheet

UNR-3.3/3-D5

Manufacturer Part Number

UNR-3.3/3-D5

Description

DC/DC Converter

Manufacturer

Murata Power Solutions Inc

Datasheet

1.UNR-3.33-D5.pdf (8 pages)

Specifications of UNR-3.3/3-D5

Dc / Dc Converter O/p Type

Fixed

No. Of Outputs

Input Voltage

4.75V To 5.5V

Power Rating

10W

Output Voltage

3.3V

Output Current

Approval Bodies

EN, IEC, UL

Supply Voltage

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

UNR-3.3/3-D5

Manufacturer:

DATEL

Quantity:

452

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

UNR-3.3/3-D5-C

Manufacturer:

MURATA

Quantity:

300

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

UNR-3.3/3-D5SM-C

Manufacturer:

Hisilicon

Quantity:

4 500

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FEATURES

„

www.murata-ps.com

Low cost! High reliability!

1" x 1" through-hole package or 1.01" x 1.01"

SMT package

Gull-wing leads; Standard reﬂ ow

Complete; No external components

Outputs: 1.8V/2A, 2.5V/2A, 3.3V/3A

Inputs: 4.75-5.5V, 10.8-13.6V

Guaranteed efﬁ ciencies to 87%

Output noise as low as 40mVp-p

Transient response as quick as 20μsec

–40 to +70°C operation with no derating

On/off control; EMC compliant

IEC950/EN60950/UL1950 approvals

Modiﬁ cations and customs for OEM's

www.murata-ps.com/rohs

For full details go to

CONTROL

GROUND

RETURN

ON/OFF

LOGIC

INPUT

UNDERVOLTAGE

SHUTDOWN

➀

PRODUCT OVERVIEW

Murata Power Solutions' 3.6-10W UNR Series

consists of non-isolated, 5V-to-1.8V (2A), 5V-to-

2.5V (2A), 5V-to-3.3V (3A), and 12V-to-3.3V (3A)

DC/DC converters in miniature surface-mount

and through-hole packages. The "gull-wing" SMT

packages (with metal shells and non-conductive

plastic baseplates) weigh a mere 17 grams and

can withstand lead temperatures up to +230°C.

They are compatible with virtually all contemporary

pick-and-place and solder-reﬂ ow processes.

ultimately be realized only when every low-voltage,

high-current CPLD, ASIC, DSP, etc. has its own

"power plant" right next to it. With isolated DC/

DC converters inevitably residing at the edges of

boards in proximity with backplanes and power

buses, the "on-board" proliferation of distributed

power will continue with more cost-effective,

non-isolated devices. The low-cost, easy-to-use

(no external components required), highly reliable

(100% fully automated SMT construction) 3.6-10W

CONTROLLER

The true beneﬁ ts of distributed power will

PWM

www.murata-ps.com

Figure 1. Simpliﬁ ed Schematic

Typical topology is shown.

Single Output, Non-Isolated, 1.8/2.5/3.3V

➁

CURRENT LIMITING

& S.C. SHUTDOWN

REFERENCE &

ERROR AMP

➀ "D5" models do not have input undervoltage shutdown.

➁ "D5" models employ a more traditional buck-regulator design

in which this FET is replaced with a power Schottky diode.

UNR Series makes this power processing at the

concluding point of use a practical reality today.

regulated. They feature user-optional on/off control

(for power-sequencing requirements), output cur-

rent limiting, and short-circuit protection (foldback

technique with auto-recovery). Additionally, the

12V-to-3.3V models offer input undervoltage

lockout (at 9.6V). Their impressive guaranteed

efﬁ ciencies enable all models to deliver their fully

rated output power from –40 to +65/70°C (ambi-

ent) without heat sinking or forced-air cooling.

use of inefﬁ cient, step-down, linear regulators,

take a look at one of these new switching buck

regulators. Their high efﬁ ciency, ease-of-use, long-

term reliability, and overall cost effectiveness will

impress you. Safety agency approvals are currently

in progress.

These versatile DC/DC's are fully line and load

If you've already considered and rejected the

04 Nov 2010 MDC_UNR 3.6-10W_B02 Page 1 of 8

OUT

3.6-10W DC/DC Converters

OUTPUT

RETURN

OUT

email: sales@murata-ps.com

UNR Series

Related parts for UNR-3.3/3-D5

UNR-3.3/3-D5 Summary of contents

Page 1

... Safety agency approvals are currently in progress. +V OUT OUTPUT RETURN ➀ "D5" models do not have input undervoltage shutdown. ➁ "D5" models employ a more traditional buck-regulator design in which this FET is replaced with a power Schottky diode. email: sales@murata-ps.com 04 Nov 2010 MDC_UNR 3.6-10W_B02 Page ...

Page 2

... UNR-1.8/2-D5SM 1.8 2 UNR-2.5/2-D5 2.5 2 UNR-2.5/2-D5SM 2.5 2 UNR-3.3/3-D5 3.3 3 UNR-3.3/3-D5SM 3.3 3 ➁ UNR-3.3/3-D12 3.3 3 ➁ UNR-3.3/3-D12SM 3.3 3 ➀ Typical +25°C under nominal line voltage and full-load conditions, unless otherwise noted. A The UNR-1.8/2-D5 and D5SM models require an external 15k: pull-up resistor between +Input and On/Off Control for normal operation. See On/Off Control for details. ➁ ...

Page 3

... Logic Ground N.C. On/Off Control Logic Ground +Output On/Off Control Output Return N.C. Input Return +Output +Input N.C. No Pin Output Return No Pin Input Return No Pin +Input email: sales@murata-ps.com 04 Nov 2010 MDC_UNR 3.6-10W_B02 Page 1.01 ±0.02 (25.65 ±0.51 ) 0.10 0.020 (0.51) 0.055 (1.40) ...

Page 4

... D5 models require a minimum 300mA load current to maintain speciﬁ ed regulation. D12 models have no minimum load requirement. Operating D5 models under no-load conditions will not damage these devices, however they may not meet all listed speciﬁ cations. The UNR- 1.8/2-D5 and D5SM require an external 15: pull-up resistor between +Input and On/Off Control for normal operation. See On/Off Control for details. The UNR-3.3/3-D12 and D12SM are speciﬁ ...

Page 5

... UNR Series 3.6-10W DC/DC Converters OUT Model Number Fuse Value UNR-1.8/2-D5/-D5SM 1.5 Amps UNR-2.5/2-D5/-D5SM 2 Amps UNR-3.3/3-D5/-D5SM 3 Amps UNR-3.3/3-D12/-D12SM 1.5 Amps Start-Up Time is the interval between the time a step input OUT to V Start-Up Time is the IN OUT Start-Up Time assumes the converter is turned off via ...

Page 6

... Resistor (R ) Resistor (R IP UNR-1.8/2-D5/-D5SM 1k: UNR-2.5/2-D5/-D5SM 1k: UNR-3.3/3-D5/-D5SM 1k: UNR-3.3/3-D12/-D12SM 10k: Single Output, Non-Isolated, 1.8/2.5/3.3V SMT Solder Process for SM models CAUTION — Avoid Reﬂ ow Ovens For the surface-mount "SM" models of the UNR Series, the packages’ gull-wing leads are made of tin-plated (150 microinches) copper. The gull-wing conﬁ ...

Page 7

... I = 2A) OUT 4.75V 1.4 1.7 2 0.5 www.murata-ps.com UNR Series 3.6-10W DC/DC Converters OUT UNR-3.3/3-D5/-D5SM (Guaranteed efficiency = 86 and 5. 1.5 2 +3.3V Output Current (Amps) UNR-3.3/3-D12/-D12SM (Guaranteed efficiency = 87 12V and 10. 13. 12V IN 1 1.5 2 +3.3V Output Current (Amps) email: sales@murata-ps ...

Page 8

... Class B and CISPR 22 (EN 55022), Class B. Correlation to other speciﬁ cations can be supplied upon request. Radiated emissions plots to FCC and CISPR 22 for model UNR-3.3/3-D5SM appear below. Published EMC test reports are available for each model number. Contact Murata Power Solutions' Applica- tions Engineering Department for more details ...

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