LSN16A-D12 Datasheet, PDF (1/13 Pages) Murata Manufacturing Co., Ltd. – Single Output, Non-Isolated, 12VIN, 0.75-5VOUT 16 Amp in DC/DCs SIP Packages

LSN-16A D12 Models
Single Output, Non-Isolated, 12VIN, 0.75-5VOUT
16 Amp in DC/DCs SIP Packages
Typical Units
FEATURES
Step-down buck regulators for new
distributed 12V power architectures
12V input (10-14V range)
0.75/1/1.2/1.5/1.8/2.5/3.3/5VOUT @ 16A
Voltage-selectable "T" version
Non-isolated, fixed-frequency,
synchronous-rectifier topology
Outstanding performance:
v ±1.25% setpoint accuracy
v Efficiencies to 96% @ 16 Amps
v Noise as low as 30mVp-p
v Stable no-load operation
v Trimmable output voltage
Remote on/off control and sense
Thermal shutdown
No derating to +68°C with 200 lfm
UL/IEC/EN60950-1 certified
EMC compliant
+INPUT
(7,8)
COMMON
(6)
66μF
VCC
ON/OFF
CONTROL
(11)
Ḥ
For full details go to
www.murata-ps.com/rohs
PRODUCT OVERVIEW
LSN Series D12 SIP's (single-in-line pack-
ages) are ideal building blocks for emerging,
on-board power-distribution schemes in
which isolated 12V buses deliver power to
any number of non-isolated, step-down buck
regulators. LSN 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, 2.5, 3.3 or
5 Volt output fully rated at 16 Amps.
LSN D12's are ideal point-of-use/load
power processors. They typically require no
external components. Their vertical-mount
packages occupy a mere 0.72 square inches
(4.6 sq. cm), and reversed pin vertical mount
allows mounting to meet competitor’s keep
out area. Horizontal-mount packages (“H”
suffix) are only 0.37 inches (9.4mm) high.
The LSN's best-in-class power density is
achieved with a fully synchronous, fixed-fre-
quency, buck topology that also delivers: high
efficiency (96% for 5VOUT models), low noise
(30 to 55mVp-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 LSN’s feature output
overcurrent detection, continuous short-circuit
protection, an output-voltage trim function, a
remote on/off control pin (pull high to disable),
thermal shutdown and a sense pin. High
efficiency enables the LSN D12s to deliver
rated output currents of 16 Amps at ambient
temperatures to +68°C with 200 lfm air flow.
If your new system boards call for three or
more supply voltages, check out the econom-
ics of on-board 12V distributed power. If you
don’t need to pay for multiple isolation barri-
ers, DATEL's non-isolated LSN D12 SIP's will
save you money.
CURRENT
SENSE
10.57
100μF 330μF
+OUTPUT
(1,2,4)
+SENSE
(3)
COMMON
(5)
PWM
CONTROLLER
REFERENCE &
ERROR AMP
Figure 1. Simplified Schematic
VOUT
TRIM
(10)
Typical topology is shown
www.murata-ps.com
Technical enquiries email: [e-mail], tel: [phone]
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