LAST TIME BUY: 3/31/2015. CLICK HERE FOR OBSOLESCENCE NOTICE OF 10/31/2014.
LSN-10A D12 Models
www.murata-ps.com
Single Output, Non-Isolated, 12VIN, 1-5VOUT, 10A, DC/DC's in SIP Packages
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, stepdown 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 typically 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. Horizontalmount 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.
Features
■
Step-down buck regulators for new
distributed 12V power architectures
■
12V input (10.8-13.2V range)
■
1 to 5VOUT @10A
■
Non-isolated, fixed-frequency,
synchronous-rectifier topology
■
Outstanding performance:
• ±1.25% setpoint accuracy
• Efficiencies to 96% @ 10 Amps
• Noise as low as 30mVp-p
• Stable no-load operation
• Trimmable output voltage
■
Remote on/off control
■
Sense pin on standard models
■
Thermal shutdown
■
No derating to +68°C with 100 lfm
■
UL/IEC/EN60950 certified
■
EMC compliant
+OUTPUT
(1,2,4)
+INPUT
(7,8)
10.5Ω
66µF
100µF
330µF
+SENSE ➀
(3)
COMMON
(5)
COMMON
(6)
CURRENT
SENSE
VCC
ON/OFF
CONTROL
(11)
PWM
CONTROLLER
➀ For devices with the sense-pin removed ("B" suffix),
the feedback path is through the +Output pin and not
the +Sense pin.
For full details go to
www.murata-ps.com/rohs
REFERENCE &
ERROR AMP
VOUT
TRIM
(10)
Typical topology is shown
Figure 1. Simplified Schematic
www.murata-ps.com/support
MDC_LSN10A-D12.F01 Page 1 of 12
