lsm-1.8-10-d3 C&D Technologies., lsm-1.8-10-d3 Datasheet

lsm-1.8-10-d3

Manufacturer Part Number

lsm-1.8-10-d3

Description

Single Output, Non-isolated, 3.3vin, 0.8-2.5vo U T

Manufacturer

C&D Technologies.

Datasheet

1.LSM-1.8-10-D3.pdf (13 pages)

Current page: 1 of 13
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■

Features

CONTROL

Step-down buck regulators with

industry-standard SMT footprint

3.3V input (3.0-3.6V range)

0.8/1/1.2/1.5/1.8/2/2.5V

Non-isolated, fixed-frequency,

synchronous-rectifier topology

Tape and reel SMT package

±1% setpoint accuracy

Efficiencies to 94% @ 10 Amps

Noise as low as 30mVp-p

Stable no-load operation

Remote on/off control

Sense pin and output voltage trim

Thermal shutdown

No derating to +70°C, natural convection

UL/IEC/EN60950 certified

EMC compliant

COMMON

ON/OFF

+INPUT

(1)

www.murata-ps.com/rohs

(3)

(2)

For full details go to

OUT

Typical Unit

@10A

CONTROLLER

www.murata-ps.com

converters that accept a 3.3V input (3.0V to 3.6V input range) and deliver 1V, 1.2V,

1.5V, 1.8V, 2V or 2.5V outputs at 10 Amps. LSM D3 SMT's are designed to take on-

board 3.3V power and convert it, with the highest efficiency in the smallest space, to

any lower voltage required by today's current-hungry DSP's, ASIC's and CPLD's.

processing. They occupy a mere 0.7 square inches (4.5 cm

inches (8.64 mm) high. The SMT package is designed for pick and place including

lead free reflow soldering, and they typically require no additional external compo-

nents.

fixed-frequency (300kHz), buck topology that also delivers: high efficiency (94% for

2.5V

max.), quick step response (100µsec), stable no-load operation, and no output

reverse conduction.

circuit and over-temperature protection, an output-voltage trim function, a remote on/

off control pin (pull low to disable), and a sense pin. High efficiency enables the LSM

D3's to deliver rated output currents of 10 Amps at ambient temperatures to +70°C

with no air flow (natural convection).

linear regulators impractical, take a look at one of DATEL's easy-to-use, low-cost

LSM SMT's (or equivalent LSN SIP's). All devices are UL/IEC/EN60950 certified and

EMC compliant. UL, CB, HALT and EMC reports are available upon request.

PWM

DATEL's LSM D3 Series for SMT (surface-mount) are non-isolated DC/DC

The LSM D3's miniature size makes them ideal for true point-of-use/load power

The LSM's best-in-class power density is achieved with a fully synchronous,

The fully functional LSM's feature output overcurrent detection, continuous short-

If your low-voltage, high-current requirements have made the use of inefficient

OUT

Figure 1. Simplified Schematic

models), low noise (30mVp-p typ.), tight line/load regulation (±0.1%/±0.25%

CURRENT

SENSE

Single Output, Non-Isolated, 3.3V

REFERENCE &

ERROR AMP

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

➀ For devices with the sense-pin removed ("B" suffix),

LSM-10A D3 Models

the feedback path is through the +Output pin and not

the +Sense pin.

10 Amp DC/DC’s in SMT Packages

) and are only 0.34

MDC_LSM-10A D3.B01 Page 1 of 13

Typical topology is shown

+OUTPUT

+SENSE

COMMON

TRIM

(5)

OUT

, 0.8-2.5V

(6)

(3)

(4)

+1 508 339 3000

➀

out

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