LSM-1.2/10-D12-C Murata Power Solutions Inc, LSM-1.2/10-D12-C Datasheet - Page 4

• Manufacturer Part Number: LSM-1.2/10-D12-C
• Description: DC/DC SM 10A 12-1.2V Non-Iso
• Manufacturer: Murata Power Solutions Inc
• Series: LSMr

Specifications of LSM-1.2/10-D12-C

• Product: Non-Isolated / POL
• Output Power: 12 W
• Input Voltage Range: 10.8 V to 13.2 V
• Number Of Outputs: 1
• Output Voltage (channel 1): 1.2 V
• Output Current (channel 1): 10 A
• Output Type: Low Voltage
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Performance/Functional Specifications
Typical @ T
Input Voltage Range
Input Current:
Input Reflected Ripple Current
Input Filter Type
Overvoltage Protection
Reverse-Polarity Protection
Undervoltage Shutdown
On/Off Control
V
Minimum Loading
Maximum Capacitive Load
V
Ripple/Noise (20MHz BW)
Total Accuracy
Efficiency
Overcurrent Detection and Short-Circuit Protection:
Transient Response (50% load step)
Start-Up Time:
Switching Frequency:
Calculated MTBF
Operating Temperature: (Ambient)
Thermal Shutdown
Dimensions
Pin Dimensions/Material
Weight
Flamability Rating
EMI
Safety
OUT
OUT
Normal Operating Conditions
Inrush Transient
Standby/Off Mode
Output Short-Circuit Condition
Current-Limiting Detection Point
Short-Circuit Detection Point
SC Protection Technique
Short-Circuit Current
V
0.8V, 1V/1.2V Models
1.5V/1.8V, 2V Models
2.5V, 3.3V, 5V Models
LSM-T/10-D12
Without Derating (100 lfm)
With Derating
copper with gold plate over nickel underplate
All models are tested and specified with external 22μF tantalum input and output capacitors.
These capacitors are necessary to accommodate our test equipment and may not be required
to achieve specified performance in your applications. All models are stable and regulate within
spec under no-load conditions.
See Technical Notes and Performance Curves for details.
The On/Off Control (pin 1) is designed to be driven with open-collector logic or the application
of appropriate voltages (referenced to Common, pin 3). Applying a voltage to On/Off Control when
no input voltage is applied to the converter may cause permanent damage.
IN
Trim Range
to V
Accuracy (50% load)
A
OUT
= +25°C under nominal line voltage and full-load conditions unless noted.
and On/Off to V
OUT
Dynamic Characteristics
Environmental
Physical
Output
Input
See Ordering Guide
See Ordering Guide
0.08A
1.5mA
12-40mA average (model dependent)
40mAp-p
Capacitive
None
None
None (except 8V LSM-T/10-D12)
On = open (internal pull-up to +V
Off = 0 to +0.4V (1mA max.)
±1.25% max. (±2% "T" version, 50% load)
No load
1000μF (low ESR, OSCON)
±10% (0.8V not trimmable)
See Ordering Guide
3% over line/load/temperature
See Ordering Guide
17 Amps
98% of V
Hiccup with auto recovery
120-400mA average (model dependent)
100μsec to ±2% of final value
75msec for V
50msec for V
105/120kHz ±10%
160/177kHz ±10%
195kHz ±10%
230kHz ±30kHz
2.3 -1.8 million hours (1V
–40 to +48/64°C (model dependent)
See Derating Curves
+115°C (110 to 125°C)
1.3" x 0.53" x 0.34" (33.02 x 13.46 x 8.64 mm)
0.112" x 0.062" (2.84 x 1.57mm) rectangular
0.28 ounces (7.8g)
UL94V-0
Conducted and radiated FCC part 15,
EN55022 (may require external filter)
UL/cUL/IEC/EN 60950-1, CSA-C22.2 No. 234
2
sec
OUT
OUT
OUT
set
www.murata-ps.com
= 1V and 0.8V
= 1.2V to 5V
OUT
to 5V
IN
OUT
)
)
I/O Filtering and Noise Reduction
All models in the LSM D12 Series are tested and specified with external 22μF
tantalum input and output capacitors. These capacitors are necessary to
accommodate our test equipment and may not be required to achieve desired
performance in your application. The LSM D12's are designed with high-
quality, high-performance internal I/O caps, and will operate within spec in most
applications with no additional external components.
are fully rated to handle the units' input ripple currents. Similarly, the internal
output capacitors are specified for low ESR and full-range frequency response.
As shown in the Performance Curves, removal of the external 22μF tantalum
output caps has minimal effect on output noise.
filtering techniques, the simplest being the installation of external I/O caps.
minimize high-frequency variations in input voltage (usually caused by IR drops
in conductors leading to the DC/DC) as the switching converter draws pulses of
current. Input capacitors should be selected for bulk capacitance (at appropri-
ate frequencies), low ESR, and high rms-ripple-current ratings. The switching
nature of modern DC/DC's requires that the dc input voltage source have low
ac impedance at the frequencies of interest. Highly inductive source imped-
ances can greatly affect system stability. Your specific system configuration
may necessitate additional considerations.
In particular, the LSM D12's input capacitors are specified for low ESR and
In critical applications, input/output ripple/noise may be further reduced using
External input capacitors serve primarily as energy-storage devices. They
TECHNICAL NOTES
These are stress ratings. Exposure of devices to 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.
Input Voltage:
On/Off Control (Pin 1)
Input Reverse-Polarity Protection
Output Overvoltage Protection
Output Current
Storage Temperature
Lead Temperature
Output noise may be further reduced with the installation of additional external output filtering.
See I/O Filtering and Noise Reduction.
MTBF’s are calculated using Telcordia SR-332(Bellcore), ground fixed, T
natural convection, +67°C pcb temperature.
Input Ripple Current is tested/specified over a 5-20MHz bandwidth with an external 33μF input
capacitor and a simulated source impedance of 220μF and 12μH. See I/O Filtering, Input
Ripple Current and Output Noise for details.
On/Off Control for LSM-T/10-D12 only: Positive Logic: On = pin open or to +4V max.,
Off = pin grounded or 0 to +0.4V max. Shutdown current is 3μA sink.
The Output Voltage Range for the LSM-T/10-D12 is +0.75V to +5V, user selectable.
LSM-T/10-D12 Overcurrent and Short-circuit specs:
Non-Isolated, 12V
Continuous or transient
Current limit
Short Circuit Current
Technical enquiries email: [e-mail], tel:
Absolute Maximum Ratings
25 Amps
600mA
IN
LSM-10A D12 Models
, 0.75-5V
MDC_LSM 10A D12 Models.B01 Page 4 of 18
MDC_LSM10AD12_A01 Page 4 of 14
15 Volts
+V
None
None
Current limited. Devices can
withstand sustained output short
circuits without damage.
–40 to +125°C
See Reflow Solder Profile
Single Output
IN
(+4V for "T" version)
OUT
DC/DC Converters
A
= +25°C, full power,
[phone]