LSM-16A C&D Technologies., LSM-16A Datasheet

LSM-16A

Manufacturer Part Number

LSM-16A

Description

Non-isolated, 13-80w Smt Dc/dc Converters

Manufacturer

C&D Technologies.

Datasheet

1.LSM-16A.pdf (12 pages)

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FEATURES

Step-down buck regulators for new

distributed 12V power architectures

12V input (10-14V range)

0.75/1/1.2/1.5/1.8/2/2.5/3.3/5V

Non-isolated, fixed-frequency,

synchronous-rectifier topology

Tape and reel SMT package

±1.25% setpoint accuracy

Efficiencies to 96% @ 16 Amps

Noise as low as 50mVp-p

Stable no-load operation

Remote on/off control

Sense pin and output voltage trim

No derating to +65°C with 200 lfm

UL/IEC/EN60950-1 certified

EMC compliant

CONTROL

COMMON

ON/OFF

+INPUT

(1)

(3)

(2)

www.murata-ps.com/rohs

For full details go to

Typical topology is shown

OUT

@16A

www.murata-ps.com

CONTROLLER

PWM

PRODUCT OVERVIEW

LSM Series D12 SMTs (surface-mount pack-

ages) are ideal building blocks for emerging,

on-board power-distribution schemes in which

isolated 12V buses deliver power to any num-

ber of non-isolated, step-down buck regulators.

LSM D12 DC/DC’s accept a 12V input (10V to

14V input range) and convert it, with the highest

efficiency in the smallest space, to a 0.75, 1,

1.2, 1.5, 1.8, 2, 2.5, 3.3 or 5 Volt output fully

rated at 16 Amps.

processors. They typically require no external

components. Their surface-mount packages

occupy a mere 1.3" x 0.53" (33.0 x 13.5mm),

and are only 0.34 inches (8.6mm) high.

is achieved with a fully synchronous, fixed-

frequency, buck topology that also delivers:

high efficiency (95% for 5V

LSM D12’s are ideal point-of-use/load power

The LSM’s best-in-class power density

Figure 1. Simplified Schematic

CURRENT

SENSE

out

models), low

16 Amp DC/DCs in SMT Packages

Non-Isolated, 13-80W SMT DC/DC Converters

Non-Isolated, 12V

REFERENCE &

ERROR AMP

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

LSM-16A D12 Models

Typical Unit

noise (50mVp-p typ.), tight line/load regulation

(±0.1%/±0.25% max.), quick step response

(100µsec), stable no-load operation, and no

output reverse conduction.

overcurrent detection, continuous short-circuit

protection, over-temperature protection, a

remote on/off control pin (pull low to disable),

an output-voltage trim function, and a sense

pin. High efficiency enables the LSM D12’s to

deliver rated output currents of 16 Amps at

ambient temperatures to +65°C with 100 lfm

air flow.

supply voltages, check out the economics of

on-board 12V distributed power. If you don’t

need to pay for multiple isolation barriers,

Murata Power Solutions’ non-isolated LSM D12

SMTs will save you money.

The fully functional LSM’s feature output

If your new system boards call for multiple

MDC_LSM 16A D12 Models.A03 Page 1 of 12

, 0.75-5V

+OUTPUT

+SENSE

COMMON

TRIM

(5)

OUT

(6)

(4)

(3)

+1 508 339 3000

out

Related parts for LSM-16A

LSM-16A Summary of contents

Page 1

... CURRENT SENSE PWM CONTROLLER Figure 1. Simplified Schematic www.murata-ps.com LSM-16A D12 Models Non-Isolated, 13-80W SMT DC/DC Converters Typical Unit Non-Isolated, 12V , 0.75-5V in noise (50mVp-p typ.), tight line/load regulation (±0.1%/±0.25% max.), quick step response (100µsec), stable no-load operation, and no output reverse conduction. The fully functional LSM’ ...

Page 2

... Nominal line voltage, no-load/full-load conditions. Mechanical Specifications - C RoHS-6 compliant* D12 = Volts (12V nominal) * Contact MPS for availability. 0.60 (15.24) NOTCH IN SHELL INDICATES PIN ONE NOTCH IN SHELL INDICATES PIN ONE www.murata-ps.com LSM-16A D12 Models Input Efficiency (Full Load nom min in in Range I ➃ in (Volts) (mA/A) Min ...

Page 3

... DC/DCs requires that the dc input voltage source have low ac impedance at the frequencies of interest. Highly inductive source imped- ances can greatly affect system stability. Your specific system configuration may necessitate additional considerations. www.murata-ps.com LSM-16A D12 Models Non-Isolated, 13-80W SMT DC/DC Converters a Absolute Maximum Ratings 15 Volts ...

Page 4

... LSM's specified rating. Therefore: (V www.murata-ps.com LSM-16A D12 Models Non-Isolated, 13-80W SMT DC/DC Converters Start-Up Time is the interval between the time at which a ramp- OUT Start-Up Time assumes the converter is turned off via the OUT (+) – ...

Page 5

... Trim pin and Common to trim up the output voltage. Fixed resistors should have absolute TCR’s less than 100ppm/°C to ensure stability. www.murata-ps.com LSM-16A D12 Models Non-Isolated, 13-80W SMT DC/DC Converters Figure 6. Trim Connections Using a Trimpot Technical enquiries email: sales@murata-ps.com, tel: MDC_LSM 16A D12 Models ...

Page 6

... The equation for this voltage adjustment is: The LSM-T/16-D12 fixed trim voltages to set the output voltage are (V) t www.murata-ps.com LSM-16A D12 Models Non-Isolated, 13-80W SMT DC/DC Converters 10500 – 1000 ( ) = V – 0.7525 O is the desired output voltage. o ...

Page 7

... If you are attempting to extract the most current out of these units under demanding temperature conditions, we advise you to monitor the output- inductor temperature to ensure it remains below +110°C at all times. www.murata-ps.com LSM-16A D12 Models Non-Isolated, 13-80W SMT DC/DC Converters R losses. The derating curves were 2 Technical enquiries email: sales@murata-ps ...

Page 8

... Efficiency vs. Line Voltage and Load Current @ 25° 10V 12V 14V Load Current (Amps) www.murata-ps.com Non-Isolated, 13-80W SMT DC/DC Converters LSM-16A D12 Models Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000 MDC_LSM 16A D12 Models.A03 Page ...

Page 9

... Typical Performance Curves for LSM D12 SMT Series www.murata-ps.com LSM-16A D12 Models Non-Isolated, 13-80W SMT DC/DC Converters Technical enquiries email: sales@murata-ps.com, tel: MDC_LSM 16A D12 Models.A03 Page 508 339 3000 ...

Page 10

Page 11

... PCB TEMPERATURE INSIDE THE HEAT SHIELD 150 200 250 Time (Seconds) Figure 6. Reflow Solder Profile www.murata-ps.com LSM-16A D12 Models Non-Isolated, 13-80W SMT DC/DC Converters HEAT SHIELD OUTSIDE TEMPERATURE 300 350 Technical enquiries email: sales@murata-ps.com, tel: MDC_LSM 16A D12 Models.A03 Page ...

Page 12

... Figure 7. Tape Dimensions USA: Tucson (AZ), Tel: (800) 547 2537, email: sales@murata-ps.com Canada: UK: France: Germany: München, Tel: +49 (0)89-544334-0, email: ped.munich@murata-ps.com Japan: China: 3/3/08 www.murata-ps.com LSM-16A D12 Models Non-Isolated, 13-80W SMT DC/DC Converters CENTERED PICK UP LOCATION NOTCH IN SHELL INDICATES PIN ONE. FEED DIRECTION TAPE 13 ...

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