LSM16A-D12 Datasheet, PDF (1/12 Pages) Murata Manufacturing Co., Ltd. – Non-Isolated, 13-80W SMT DC/DC Converters

www.murata-ps.com
LSM-16A D12 Models
Non-Isolated, 13-80W SMT DC/DC Converters
FEATURES
Step-down buck regulators for new
distributed 12V power architectures
12V input (10-14V range)
0.75/1/1.2/1.5/1.8/2/2.5/3.3/5VOUT @16A
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
Designed to meet UL/IEC/EN60950-1
safety
EMC compliant
Typical Unit
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.
LSM D12’s are ideal point-of-use/load power
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.
The LSM’s best-in-class power density
is achieved with a fully synchronous, fixed-
frequency, buck topology that also delivers:
high efficiency (95% for 5VOUT models), low
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’s feature output
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.
If your new system boards call for multiple
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.
+INPUT
(2)
+OUTPUT
(4)
COMMON
(3)
ON/OFF
CONTROL
(1)
CURRENT
SENSE
VCC
PWM
CONTROLLER
Typical topology is shown
Figure 1. Simplified Schematic
REFERENCE &
ERROR AMP
Ḥ
For full details go to
www.murata-ps.com/rohs
+SENSE
(6)
COMMON
(3)
VOUT
TRIM
(5)
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Technical enquiries email: [e-mail], tel: [phone]
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