UNR-3.3/3-D5SM Murata Power Solutions Inc, UNR-3.3/3-D5SM Datasheet

UNR-3.3/3-D5SM

Manufacturer Part Number

UNR-3.3/3-D5SM

Description

DC/DC Converter

Manufacturer

Murata Power Solutions Inc

Datasheet

1.UNR-3.33-D5SM-C.pdf (8 pages)

Specifications of UNR-3.3/3-D5SM

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

Supply Voltage

Dc / Dc Converter Case Style

SMD

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-D5SM-C

Manufacturer:

Hisilicon

Quantity:

4 500

Current page: 1 of 8
Download datasheet (189Kb)

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-D5SM

UNR-3.3/3-D5SM 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

... TEMPERATURE DERATING 10 UNR-3.3/3-D5 UNR-3.3/3-D5SM 9 UNR-3.3/3-D12 UNR-3.3/3-D12SM UNR-2.5/2-D5 UNR-2.5/2-D5SM 5 4 UNR-1.8/2-D5 3 UNR-1.8/2-D5SM – Ambient Temperature (˚ I/O Filtering and Noise Reduction All D5 models of UNR 3.6-10W Series DC/DC converters achieve their rated ripple and noise speciﬁ cations without the use of external input/ output capacitors. The UNR-3.3/3-D12 and D12SM models are tested and speciﬁ ...

Page 6

... On/Off Control The On/Off Control pin may be used for remote on/off operation. UNR 3.6-10W Series converters are designed so that they are enabled when the control pin is pulled high or left open (normal mode) and disabled when the control pin is pulled low (to less than +0.8V relative to Logic Ground). As shown in the ﬁ ...

Page 7

... 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.com 04 Nov 2010 MDC_UNR 3.6-10W_B02 Page 3A) OUT V = 4.75V IN 2 3A) OUT 2.5 3 ...

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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