LSM-1 MURATA [Murata Manufacturing Co., Ltd.], LSM-1 Datasheet

LSM-1

Manufacturer Part Number

LSM-1

Description

Manufacturer

MURATA [Murata Manufacturing Co., Ltd.]

Datasheet

1.LSM-1.pdf (13 pages)

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Company:

Meier Automation Equipment Co., Limited

Part Number:

LSM-1.5/10-D3-C

Manufacturer:

MURATA/村田

Quantity:

20 000

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Bonase Electronics (HK) Co., Limited

Part Number:

LSM-11

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Bonase Electronics (HK) Co., Limited

Part Number:

LSM-11S

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MOELLER

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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:

LSM-10A D3 Models

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

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

OUT

Related parts for LSM-1

LSM-1 Summary of contents

Page 1

... TRIM (5) For devices with the sense-pin removed ("B" suffix), the feedback path is through the +Output pin and not the +Sense pin. Typical topology is shown Technical enquiries email: sales@murata-ps.com, tel: MDC_LSM-10A D3.B01 Page OUT (4) (6) (3) +1 508 339 3000 ...

Page 2

... C45, P63 70/8.1 91.5% 93.5% 95% C45, P63 Case C45 I/O Connections Pin Function P63 1 On/Off Control 2 +Input 3 Common 4 +Output 5 V Trim OUT 6 +Sense Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000 MDC_LSM-10A D3.B01 Page OUT ...

Page 3

... Figure 2. Measuring Input Ripple Current Technical enquiries email: sales@murata-ps.com, tel: LSM-10A D3 Models , 0.8-2. Amp DC/DC’s in SMT Packages 6 Volts +V IN None None Current limited. Devices can withstand sustained output circuits –40 to +125°C See Reflow Solder Profile +1 508 339 3000 MDC_LSM-10A D3.B01 Page OUT ...

Page 4

... OUT Start-Up Time assumes the converter is turned off via the OUT OUT (+) – Common] – [Sense(+) – Common] 10%V at pins rated output power OUT . OUT Technical enquiries email: sales@murata-ps.com, tel: MDC_LSM-10A D3.B01 Page 0.8-2.5V IN OUT . OUT +1 508 339 3000 ...

Page 5

... EXTERNAL OPEN INPUT COMMON External Input Open: On/Off pin Low = DC/DC converter Off External Input Low: On/Off pin High = DC/DC converter On Figure 5. Driving the External Power-Up Open Collector Technical enquiries email: sales@murata-ps.com, tel: MDC_LSM-10A D3.B01 Page 0.8-2.5V IN OUT +1 508 339 3000 ...

Page 6

... V O NOM LSM-10A D3 Models Single Output, Non-Isolated, 3. Amp DC/DC’s in SMT Packages 2 R losses. The derating curves were 2 R losses in the output inductor are significantly less at Technical enquiries email: sales@murata-ps.com, tel: MDC_LSM-10A D3.B01 Page 0.8-2.5V OUT +1 508 339 3000 ...

Page 7

... Therefore it is difficult to give cap values which serve all applications. Some experimentation may be required. www.murata-ps.com LSM-10A D3 Models Single Output, Non-Isolated, 3. Amp DC/DC’s in SMT Packages Technical enquiries email: sales@murata-ps.com, tel: MDC_LSM-10A D3.B01 Page 0.8-2.5V OUT +1 508 339 3000 ...

Page 8

... Typical Performance Curves for LSM-10A D3 SMT Series LSM-1/10-D3 Efficiency vs. Line Voltage and Load Current 3. 3. Load Current (Amps) LSM-1.2/10-D3 Efficiency vs. Line Voltage and Load Current 3. 3.6V IN ...

Page 9

... Typical Performance Curves for LSM-10A D3 SMT Series LSM-1/10-D3 & LSM-1.2/10-D3 Output Current vs. Ambient Temperature (SMT mount, air flow direction from pin 2 to pin Natural Convection 6 100 lfm – Ambient Temperature ( C) LSM-1.8/10-D3 & LSM-2/10-D3 Output Current vs. Ambient Temperature ...

Page 10

... Typical Performance Curves for LSM-10A D3 SMT Series at V Start-Up from ON/OFF (I = 1V/10A 22μF) OUT IN OUT V IN 2V/div V OUT 1V/div 2msec/div Start-Up from 1V/10A 22μF) OUT IN OUT V IN 2V/div V OUT 1V/div 2msec/div Output Hiccup (LSM-1/10-D3, Shorted V ) OUT 100mV/div 4msec/div www ...

Page 11

... Typical Performance Curves for LSM-10A D3 SMT Series at V Output Ripple and Noise (V = 2V/10A 22μ 20MHz) OUT IN OUT 20mV/div 1μsec/div Dynamic Load Response ( 10A Step 22μF) OUT IN OUT 50mV/div 100μsec/div Dynamic Load Response ( 10A Step 22μ ...

Page 12

... Time (Seconds) Figure 6. Reflow Solder Profile www.murata-ps.com LSM-10A D3 Models Single Output, Non-Isolated, 3.3V 10 Amp DC/DC’s in SMT Packages HEAT SHIELD OUTSIDE TEMPERATURE 250 300 350 Technical enquiries email: sales@murata-ps.com, tel: MDC_LSM-10A D3.B01 Page 0.8-2.5V IN OUT 400 +1 508 339 3000 ...

Page 13

... Tokyo, Tel: 3-3779-1031, email: sales_tokyo@murata-ps.com Osaka, Tel: 6-6354-2025, email: sales_osaka@murata-ps.com Website: www.murata-ps.jp Shanghai, Tel: +86 215 027 3678, email: shanghai@murata-ps.com Guangzhou, Tel: +86 208 221 8066, email: guangzhou@murata-ps.com Technical enquiries email: sales@murata-ps.com, tel: MDC_LSM-10A D3.B01 Page 0.8-2.5V IN OUT CAUTION PRESS TO REMOVE ...

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