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LSM2-T/6-W3-C

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17
www.murata-ps.com
www.murata-ps.com/support
For full details go to
www.murata-ps.com/rohs
+INPUT
COMMON
PWM
CONTROLLER
CURRENT
SENSE
REFERENCE &
ERROR AMP
VCC
ON/OFF
CONTROL
VTRACK/
SEQUENCE
INPUT
VOUT
TRIM
+OUTPUT
+SENSE
COMMON
POWER
GOOD
LSM2 Series
Single Output, Non-Isolated
Selectable-Output POL DC/DC Converters
MDC_LSM2 Series.D01∆ Page 1 of 17
CONNECTION DIAGRAM
FEATURES
Point-of-load (POL) converters for
mixed voltage systems
5V & 12V wide input ranges
6, 10 or 16 Amp maximum outputs
DOSA compatible SMT package
Meets RoHS-6 compliance
Phased start up sequencing and tracking
Extensive self-protection
Starts up into pre-biased loads
They are fully compatible with the Distributed-
power Open Standards Alliance specification
(www.dosapower.com). LSM2s can power CPU’s,
programmable logic and mixed voltage systems
with little heat and low noise. A typical applica-
tion uses a master isolated 12 or 5 Volt DC supply
and individual LSM2 converters for local 1.8 and
3.3 Volt DC supplies. All system isolation resides
in the central supply, leaving lower cost POL
regulation right at the load. Unlike linear regula-
tors, the LSM2’s can deliver very high power (up to
52 Watts) in a tiny area with no heat sinking and no
external components needed. They feature quick
transient response (to 25µsec) and very fast current
slew rates (to 20A/µsec).
PRODUCT OVERVIEW
Murata Power Solutions’ miniature POL switching DC/DC
converters are ideal regulation and supply elements for
mixed voltage systems.
Typical Unit
Typical topology is shown
LAST TIME BUY: 3/31/2015. CLICK HERE FOR OBSOLESCENCE NOTICE OF 10/31/2014.
www.murata-ps.com/support
LSM2 Series
Single Output, Non-Isolated
Selectable-Output POL DC/DC Converters
MDC_LSM2 Series.D01∆ Page 2 of 17
PART NUMBER STRUCTURE
Typical at TA = +25°C under nominal line voltage and full-load conditions, unless noted.
Ripple/Noise (R/N) is tested/specified over a 20MHz bandwidth and may be reduced
with external filtering. See I/O Filtering and Noise Reduction for details.
These devices have no minimum-load requirements and will regulate under no-load
conditions. Regulation specifications describe the output-voltage deviation as the line
voltage or load is varied from its nominal/midpoint value to either extreme.
Nominal line voltage, no-load/full-load conditions.
LSM2-T16-D12 efficiencies are shown at 5VOUT.
VIN must be ≥0.5V greater than VOUT.
These are not complete model numbers. Please refer to the Part Number Structure
when ordering.
➇ RoHS-6 compliance does not claim EU RoHS exemption 7b (lead in solder).
PERFORMANCE SPECIFICATIONS AND ORDERING GUIDE
Root Model
Output Input
Efficiency
Package
(Case/Pinout)
VOUT
(Volts)
IOUT
(Amps)
Power
(Watts)
R/N (mVp-p) Regulation
VIN Nom.
(Volts)
Range
(Volts)
IIN
(mA/A)
Typ. Max. Line Load
Min. Typ.
LSM2-T/6-W3-C 0.75-3.3 6 19.8 20 40 ±0.11% ±0.075% 5 2.4-5.5 50/4.15 93% 95.5% C63, P67
To Be Discontinued*
LSM2-T/6-D12-C 0.75-5 6 30.0 30 90 ±0.075% ±0.15% 12 8.3-13.2 70/2.68 91.9% 93.4% C63, P67
LSM2-T/10-W3-C 0.75-3.3 10 33.0 58 79 ±0.15% ±0.075% 5 2.4-5.5 75/6.91 94% 95.5% C62, P66
LSM2-T/10-D12-C 0.75-5 10 50.0 62 80 ±0.07% ±0.15% 12 8.3-13.2 100/4.368 93.5% 95.4% C62, P66
LSM2-T/16-W3-C 0.75-3.3 16 52.8 83 110 ±0.1% ±0.075% 5 2.4-5.5 70/11.15 92.8% 94.7% C62, P66
LSM2-T/16-D12-C
0.75-5 16 80.0 90 125 ±0.1% ±0.21% 12 8.3-13.2 100/7.1 93% 94% C62, P66
Maximum Rated Output
Current in Amps
Non-Isolated SMT
Output Configuration:
L = Unipolar
Low Voltage
Nominal Output Voltage:
0.75-3.3 Volts (W3)
0.75-5 Volts (D12)
L SM2 -
/
D12-T
16 N
Note:
Not all model number combinations
are available. Contact MPS.
Input Voltage Range:
D12 = 8.3-14 Volts (12V nominal)
W3 = 2.4-5.5 Volts (5V nominal)
On/Off Polarity:
Blank = Positive polarity
N = Negative polarity
G
Power Good Output: **
Blank = Omitted
G = Installed
C
RoHS6 compliant*
(see note 8)
-
* Contact MPS (DATEL) for availability.
** The Power Good option is not available for
LSM2-T/10-D12 and LSM2-T/16-D12. Models
without Power Good do not install pad 8 (10/16
Amp). For 6 Amp models, pad 7 is only installed
for “G” models.
*LAST TIME BUY: 3/31/2015. CLICK HERE FOR OBSOLESCENCE NOTICE OF 10/31/2014.
www.murata-ps.com/support
LSM2 Series
Single Output, Non-Isolated
Selectable-Output POL DC/DC Converters
MDC_LSM2 Series.D01∆ Page 3 of 17
Performance/Functional Specifications
(1)
INPUT
Input Voltage Range See Ordering Guide
Isolation Not isolated, input and output use the same
common return.
Start-Up Threshold
W3 Models 2.2 Volts
12V Models 8 Volts
Undervoltage Shutdown
W3 Models 2.0 Volts
12V Models 7.5 Volts
Overvoltage Shutdown None
Reflected (Back) Ripple Current
(2)
20-70mAp-p (model dependent)
Internal Input Filter Type Capacitive
Reverse Polarity Protection See fuse information
Input Current:
Full Load Conditions See Ordering Guide
Inrush Transient 0.1-0.4A
2
sec (model dependent)
Shutdown Mode (Off, UV, OT) 5mA
Output Short Circuit 60mA
Low Line (VIN = VMIN)
LSM2-T/6-W3 5.54 Amps
LSM2-T/6-D12 3.79 Amps
LSM2-T/10-W3 9.14 Amps
LSM2-T/10-D12 6.375 Amps
LSM2-T/16-W3 14.63 Amps
LSM2-T/16-D12 10.2 Amps
Remote On/Off Control:
(5)
Positive Logic (no model suffix) OFF = ground pin to +0.3V max.
ON = open pin or +VIN max.
Negative Logic (“N” model suffix) ON = Open pin or 0 to +0.3V max.
OFF = +2.5V to +VIN max.
Current 1mA max.
OUTPUT
Voltage Output Range See Ordering Guide
Minimum Loading No minimum load
Accuracy (50% load) ±2% of VNOM
Voltage Adjustment Range
(13)
See Ordering Guide
Temperature Coefficient ±0.02% of VOUT range per °C
Ripple/Noise (20 MHz bandwidth) See Ordering Guide and
(8)
Line/Load Regulation (See Tech Notes) See Ordering Guide and
(10)
Efficiency See Ordering Guide
Maximum Capacitive Loading:
(14)
LSM2-T/6 models:
Cap-ESR = 0.001 to 0.01W 3000µF
Cap-ESR >0.01W 5000µF
LSM2-T/10 and -T/16 models:
Cap-ESR = 0.001 to 0.01W 5000µF
Cap-ESR >0.01W 10,000µF
Current Limit Inception: (98% of VOUT)
LSM2-T/6 models 10 Amps (after warm up)
LSM2-T/10 models 16.75 Amps (after warm startup)
LSM2-T/16 models 21–31 Amps (after warm up)
Short Circuit Mode
(6)
Short Circuit Current Output 600mA
Protection Method
(16)
Hiccup autorecovery on overload removal
Short Circuit Duration Continuous, no damage (output shorted to
ground)
ABSOLUTE MAXIMUM RATINGS
Input Voltage (Continuous or transient)
W3 models +7 Volts
12V models +15 Volts
On/Off Control –0.3V min. to +VIN max.
Input Reverse Polarity Protection See Fuse section
Output Current (7) Current-limited. Devices can
withstand sustained short circuit
without damage.
Storage Temperature –55 to +125°C
Lead Temperature (soldering 10 sec. max.) +280°C
These are stress ratings. Exposure of devices to greater than any of these conditions may
adversely affect long-term reliability. Proper operation under conditions other than those listed in
the Performance/Functional Specifications Table is not implied.
Pre-bias Startup
(15)
Converter will start up if the external
output voltage is less than VNOM
Sequencing
Slew Rate 2V max. per millisecond
Startup delay until sequence start 10 milliseconds
Tracking accuracy, rising input VOUT = ±100mV of Sequence In
Tracking accuracy, falling input VOUT = ±200mV of Sequence In
Sequence pin input impedance 400kW to 1MW
Remote Sense to VOUT 0.5V max.
(7)
Power Good Output
(17)
TRUE (OK) = open drain
(“G” suffix) FALSE (not OK) = Signal Ground to 0.4V
Power_Good Configuration MOSFET to ground with external user
pullup, 10mA max. sink
DYNAMIC CHARACTERISTICS
Dynamic Load Response 25µsec to ±2% of final value
(50-100-50% load step, di/dt = 20A/µsec)
Start-Up Time 7msec for VOUT = nominal
(VIN on to VOUT regulated or On/Off to VOUT)
Switching Frequency
LSM2-T/6 models 315kHz
LSM2-T/10 and -T/16 models 230kHz
ENVIRONMENTAL
Calculated MTBF
(4)
TBC Hours
Operating Temperature Range (Ambient) –40 to +85°C
with derating
(9)
See Derating Curves
Operating PC Board TemUperature –40 to +100°C max.
(12)
Storage Temperature Range –55 to +125°C
Thermal Protection/Shutdown +115°C
Relative Humidity to 85% / +85°C, non-condensing
PHYSICAL
Outline Dimensions See Mechanical Specifications
Removable Heat Shield Nylon 46
Weight 0.28 ounces (7.8 grams)
Lead Material Tin-plated copper alloy
Electromagnetic Interference
Designed to meet
FCC part 15, class B,
EN55022
(conducted and radiated) (may need external filter)
Safety Designed to meet UL/cUL 60950-1 CSA-
C22.2 No.234 IEC/EN
60950-1
Flammability UL94V-0
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17

LSM2-T/6-W3-C

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