LSM10A-D3 Datasheet, PDF (1/13 Pages) Murata Manufacturing Co., Ltd. – Single Output, Non-Isolated, 3.3VIN, 0.8-2.5VOUT 10 Amp DC/DC’s in SMT Packages

LSM-10A D3 Models
Single Output, Non-Isolated, 3.3VIN, 0.8-2.5VOUT
10 Amp DC/DC’s in SMT Packages
Features
Typical Unit
N Step-down buck regulators with
industry-standard SMT footprint
N 3.3V input (3.0-3.6V range)
N 0.8/1/1.2/1.5/1.8/2/2.5VOUT @10A
N Non-isolated, fixed-frequency,
synchronous-rectifier topology
N Tape and reel SMT package
N ±1% setpoint accuracy
N Efficiencies to 94% @ 10 Amps
N Noise as low as 30mVp-p
N Stable no-load operation
N Remote on/off control
N Sense pin and output voltage trim
N Thermal shutdown
N No derating to +70°C, natural convection
N UL/IEC/EN60950 certified
N EMC compliant
DATEL's LSM D3 Series for SMT (surface-mount) are non-isolated DC/DC
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.
The LSM D3's miniature size makes them ideal for true point-of-use/load power
processing. They occupy a mere 0.7 square inches (4.5 cm²) and are only 0.34
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.
The LSM's best-in-class power density is achieved with a fully synchronous,
fixed-frequency (300kHz), buck topology that also delivers: high efficiency (94% for
2.5VOUT models), low noise (30mVp-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 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).
If your low-voltage, high-current requirements have made the use of inefficient
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.
+INPUT
(2)
COMMON
(3)
VCC
ON/OFF
CONTROL
(1)
Ḥ
For full details go to
www.murata-ps.com/rohs
+OUTPUT
(4)
CURRENT
SENSE
+SENSE
(6)
~
COMMON
(3)
PWM
CONTROLLER
REFERENCE &
ERROR AMP
VOUT
TRIM
(5)
Figure 1. Simplified Schematic
~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
www.murata-ps.com
Technical enquiries email: [e-mail], tel: [phone]
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