LSN10A-D12 Datasheet, PDF (1/12 Pages) Murata Manufacturing Co., Ltd. – Single Output, Non-Isolated, 12VIN, 1-5VOUT, 10A, DC/DCs in SIP Packages

LSN-10A D12 Models
Single Output, Non-Isolated, 12VIN, 1-5VOUT, 10A, DC/DC's in SIP Packages
Features
N Step-down buck regulators for new
distributed 12V power architectures
N 12V input (10.8-13.2V range)
N 1 to 5VOUT @10A
N Non-isolated, fixed-frequency,
synchronous-rectifier topology
N Outstanding performance:
v ±1.25% setpoint accuracy
v Efficiencies to 96% @ 10 Amps
v Noise as low as 30mVp-p
v Stable no-load operation
v Trimmable output voltage
N Remote on/off control
N Sense pin on standard models
N Thermal shutdown
N No derating to +68°C with 100 lfm
N UL/IEC/EN60950 certified
N EMC compliant
+INPUT
(7,8)
COMMON
(6)
66μF
LSN Series D12 SIP's (single-in-line packages) 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 (10.8V
to 13.2V input range) and convert it, with the highest efficiency in the
smallest space, to a 1, 1.1, 1.2, 1.3, 1.5, 1.8, 2, 2.5, 3.3 or 5 Volt output
fully rated at 10 Amps.
LSN D12's are ideal point-of-use/load power processors. They typi-
cally require no external components. Their vertical-mount packages
occupy a mere 0.7 square inches (4.5 sq. cm), and reversed pin vertical
mount allows mounting to meet competitor's keep out area. Horizontal-
mount packages ("H" suffix) are only 0.34 inches (8.6mm) high.
The LSN's best-in-class power density is achieved with a fully
synchronous, fixed-frequency, buck topology that also delivers: high
efficiency (96% for 5VOUT models), low noise (30 to 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 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 D12's to deliver rated output currents of 10 Amps at ambient
temperatures
to +68°C with 100 lfm air flow.
If your new system boards call for three or more supply voltages,
check out the economics of on-board 12V distributed power. If you don't
need to pay for multiple isolation barriers, DATEL's non-isolated LSN
D12 SIP's will save you money.
10.57
+OUTPUT
(1,2,4)
100μF 330μF
+SENSE ^~
(3)
COMMON
(5)
CURRENT
SENSE
ON/OFF
CONTROL
(11)
Ḥ
VCC
PWM
CONTROLLER
~For devices with the sense-pin removed ("B" suffix),
the feedback path is through the +Output pin and not
the +Sense pin.
REFERENCE &
ERROR AMP
For full details go to
www.murata-ps.com/rohs
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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