LSM16A-W3 Datasheet, PDF (1/12 Pages) Murata Manufacturing Co., Ltd. – Non-Isolated, Wide Input SMT DC/DC Converters

LSM-16A W3 Models
Non-Isolated, Wide Input SMT DC/DC Converters
FEATURES
Step-down, wide input buck regulators for
distributed 3-5V power architectures
3V to 5V wide-input range
0.75/1/1.2/1.5/1.8/2/2.5/3.3VOUT @ 1 6A
Non-isolated, fixed-frequency,
synchronous-rectifier topology
Tape and reel SMT package
±1% setpoint accuracy
Efficiencies to 95% @ 16 Amps
Noise as low as 30mVp-p
Stable no-load operation
Remote on/off control
Sense pin and output voltage trim
No derating to +65°C with no fan
Designed to meet UL/IEC/EN60950-1 safety
EMC compliant
SIMPLIFIED SCHEMATIC
Non-Isolated, 3-5.5VIN,
0.75-3.3VOUT 16 Amp
DC/DC’s in SMT Packages
Typical unit
PRODUCT OVERVIEW
LSM Series W3 SMT’s (surface-mount
packages) are ideal building blocks for
emerging, on-board power-distribution
schemes in which isolated 3 to 5.5V buses
deliver power to any number of non-iso-
lated, step-down buck regulators. LSM W3
DC/DC’s accept 3 to 5.5 Volts 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, or
3.3 Volt output fully rated at 16 Amps.
LSM W3’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 (97%, 3.3VOUT, 8A), low noise
(30mVp-p typ.), tight line/load regulation
(±0.1%/±0.25% max.), quick step response
(30μsec), stable no-load operation, and no
output reverse conduction.
The fully functional LSM’s feature output
overcurrent detection, continuous short-
circuit protection, over-temperature protec-
tion, a remote on/off control pin (pull low to
disable), an output-voltage trim function,
and a sense pin. High efficiency enables the
LSM W3’s to deliver rated output currents of
16 Amps at ambient temperatures to +65°C
with natural convection.
If your new system boards call for mul-
tiple supply voltages, check out the econom-
ics of on-board 3-5.5V distributed power. If
you don’t need to pay for multiple isolation
barriers, DATEL’s non-isolated LSM W3
SMT’s will save you money.
+INPUT
(2)
+OUTPUT
(4)
COMMON
(3)
VCC
ON/OFF
CONTROL
(1)
Ḥ
For full details go to
www.murata-ps.com/rohs
PWM
CONTROLLER
CURRENT
SENSE
REFERENCE &
ERROR AMP
Typical topology is shown.
Figure 1. Simplified Schematic
+SENSE
(6)
COMMON
(3)
VOUT
TRIM
(5)
www.murata-ps.com
Technical enquiries email: [e-mail], tel: [phone]
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