LSM10A-D5 Datasheet, PDF (1/13 Pages) Murata Manufacturing Co., Ltd. – Single Output, Non-Isolated, 5VIN, 0.8-3.3VOUT, 10A, DC/DCs in SMT Packages

LSM-10A D5 Models
Single Output, Non-Isolated, 5VIN, 0.8-3.3VOUT, 10A, DC/DC's in SMT Packages
Typical Unit
Features
N Step-down buck regulators with
industry-standard SMT footprint
N 5V input (4.5-5.5V range)
N 0.8/1/1.2/1.5/1.8/2/2.5/3.3VOUT @10A
N Non-isolated, fixed-frequency,
synchronous-rectifier topology
N Tape and reel SMT package
N ±1% setpoint accuracy
N Efficiencies to 95% @ 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 +71°C, natural convection}
N _{UL/IEC/EN60950 certified}
N _{EMC compliant}
DATEL's LSM D5 Series for SMT (surface-mount) are non-isolated DC/
DC converters that accept a 5V input (4.5V to 5.5V input range) and deliver
0.8V, 1V, 1.2V, 1.5V, 1.8V, 2V, 2.5V, or 3.3V outputs at 10 Amps. LSM D5
SMT's are designed to take on-board 5V 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 D5'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 components.
The LSM's best-in-class power density is achieved with a fully syn-
chronous, fixed-frequency (300kHz), buck topology that also delivers: high
efficiency (95% for 3.3VOUT 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, con-
tinuous 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 D5's to deliver rated output currents
of 10 Amps at ambient temperatures to +71°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
PWM
CONTROLLER
CURRENT
SENSE
REFERENCE &
ERROR AMP
Figure 1. Simplified Schematic
+OUTPUT
(4)
+SENSE
(6)
COMMON
(3)
VOUT
TRIM
(5)
www.murata-ps.com
Technical enquiries email: [e-mail],_l t_te_ol_p: +_ol1_og50_y8_is33_s9_ho3_w00_n0
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