UNR-3.3/3-D12SM-C Murata Power Solutions Inc, UNR-3.3/3-D12SM-C Datasheet

DC/DC Converters & Regulators 10W 12V to 3.3V 3A SURF MOUNT PACKAGE

UNR-3.3/3-D12SM-C

Manufacturer Part Number

UNR-3.3/3-D12SM-C

Description

DC/DC Converters & Regulators 10W 12V to 3.3V 3A SURF MOUNT PACKAGE

Manufacturer

Murata Power Solutions Inc

Series

UNRr

Datasheet

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

Specifications of UNR-3.3/3-D12SM-C

Output Power

10 W

Input Voltage Range

10.8 V to 13.6 V

Number Of Outputs

Output Voltage (channel 1)

3.3 V

Output Current (channel 1)

3 A

Product

Non-Isolated / POL

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

UNR-3.3/3-D12SM-C

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

UNR-3.3/3-D12SM-C

Manufacturer:

MURATA/村田

Quantity:

20 000

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-D12SM-C

UNR-3.3/3-D12SM-C 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

... 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 Ripple/Noise (R/N) measured over a 20MHz bandwidth. The UNR-3.3/3-D12 and D12SM models are speciﬁ ed with an external 22μF input capacitor. All other models are speciﬁ ed with no external I/O capacitors. Output noise on the D12 models can be reduced signiﬁ ...

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

... 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 ed with a single, external 22μF input capacitor (minimally rated for 1 ...

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

... EMI Radiated Emissions If you’re designing with EMC in mind, please note that all of Murata Power Solutions' 3.6-10 Watt UNR Series DC/DC Converters have been characterized for radiated and conducted emissions in our new EMI/EMC laboratory. Testing is conducted in an EMCO 5305 GTEM test cell utilizing EMCO automated EMC test software. Radiated emissions are tested to the limits of FCC Part 15, Class B and CISPR 22 (EN 55022), Class B. Correlation to other speciﬁ ...

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