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参数资料
| 型号： | LSM-1.5/10-D12-C |
| 厂商： | MURATA POWER SOLUTIONS INC |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 封装： | ROHS COMPLIANT, SMT-6 |
| 文件页数： | 13/18页 |
| 文件大小： | 1583K |
| 代理商： | LSM-1.5/10-D12-C |
MDC_LSM 10A D12 Models.B01 Page 4 of 18
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000
www.murata-ps.com
Single Output
LSM-10A D12 Models
Non-Isolated, 12Vin, 0.75-5Vout DC/DC Converters
MDC_LSM10AD12_A01 Page 4 of 14
Input
Input Voltage Range
See Ordering Guide
Input Current:
Normal Operating Conditions
See Ordering Guide
Inrush Transient
0.08A2 sec
Standby/Off Mode
1.5mA
Output Short-Circuit Condition
12-40mA average (model dependent)
Input Reflected Ripple Current 40mAp-p
Input Filter Type
Capacitive
Overvoltage Protection
None
Reverse-Polarity Protection
None
Undervoltage Shutdown
None (except 8V LSM-T/10-D12)
On/Off Control
On = open (internal pull-up to +VIN)
Off = 0 to +0.4V (1mA max.)
Output
VOUT Accuracy (50% load)
±1.25% max. (±2% "T" version, 50% load)
Minimum Loading
No load
Maximum Capacitive Load
1000F (low ESR, OSCON)
VOUT Trim Range
±10% (0.8V not trimmable)
Ripple/Noise (20MHz BW)
See Ordering Guide
Total Accuracy
3% over line/load/temperature
Efficiency
See Ordering Guide
Overcurrent Detection and Short-Circuit Protection:
Current-Limiting Detection Point
17 Amps
Short-Circuit Detection Point
98% of VOUT set
SC Protection Technique
Hiccup with auto recovery
Short-Circuit Current
120-400mA average (model dependent)
Dynamic Characteristics
Transient Response (50% load step)
100sec to ±2% of final value
Start-Up Time:
VIN to VOUT and On/Off to VOUT
75msec for VOUT = 1V and 0.8V
50msec for VOUT = 1.2V to 5V
Switching Frequency:
0.8V, 1V/1.2V Models
105/120kHz ±10%
1.5V/1.8V, 2V Models
160/177kHz ±10%
2.5V, 3.3V, 5V Models
195kHz ±10%
LSM-T/10-D12
230kHz ±30kHz
Environmental
Calculated MTBF
2.3-1.8 million hours (1VOUT to 5VOUT)
Operating Temperature: (Ambient)
Without Derating (100 lfm)
–40 to +48/64°C (model dependent)
With Derating
See Derating Curves
Thermal Shutdown
+115°C (110 to 125°C)
Physical
Dimensions
1.3" x 0.53" x 0.34" (33.02 x 13.46 x 8.64 mm)
Pin Dimensions/Material
0.112"x 0.062" (2.84 x 1.57mm) rectangular
copper with gold plate over nickel underplate
Weight
0.28 ounces (7.8g)
Flamability Rating
UL94V-0
EMI
Conducted and radiated FCC part 15,
EN55022 (may require external filter)
Safety
UL/cUL/IEC/EN 60950-1, CSA-C22.2 No. 234
Performance/Functional Specifications
Typical @ TA = +25°C under nominal line voltage and full-load conditions unless noted.
All models are tested and specified with external 22F 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.
Input Voltage:
Continuous or transient
15 Volts
On/Off Control (Pin 1)
+VIN (+4V for "T" version)
Input Reverse-Polarity Protection
None
Output Overvoltage Protection
None
Output Current
Current limited. Devices can
withstand sustained output short
circuits without damage.
Storage Temperature
–40 to +125°C
Lead Temperature
See Reflow Solder Profile
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.
Absolute Maximum Ratings
I/O Filtering and Noise Reduction
All models in the LSM D12 Series are tested and specified with external 22F
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.
In particular, the LSM D12's input capacitors are specified for low ESR and
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 22F tantalum
output caps has minimal effect on output noise.
In critical applications, input/output ripple/noise may be further reduced using
filtering techniques, the simplest being the installation of external I/O caps.
External input capacitors serve primarily as energy-storage devices. They
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.
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, TA = +25°C, full power,
natural convection, +67°C pcb temperature.
Input Ripple Current is tested/specified over a 5-20MHz bandwidth with an external 33F input
capacitor and a simulated source impedance of 220F and 12H. 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 3A 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:
Current limit
25 Amps
Short Circuit Current 600mA
TECHNICAL NOTES
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