OKL2-T/3-W12N-C 查看數據表（PDF） - Murata Power Solutions
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OKL2-T/3-W12N-C Datasheet PDF : 17 Pages
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Performance and Functional Specifications
See Note 1
Input
Input Voltage Range
See Ordering Guide and Note 7.
Isolation
Not isolated
Start-Up Voltage
4.2 V
Undervoltage Shutdown (see Note 15) 3.4 V
Overvoltage Shutdown
None
Reflected (Back) Ripple Current (Note 2) 49 mA pk-pk
Internal Input Filter Type
Capacitive
Recommended External Fuse
4A
Reverse Polarity Protection
None, install external fuse
Input Current:
Full Load Conditions
Inrush Transient
Shutdown Mode (Off, UV, OT)
Output in Short Circuit
Low Line (Vin=Vmin)
See Ordering Guide
0.16 A2Sec.
1 mA
5 mA
2.24 A.
Remote On/Off Control (Note 5)
Negative Logic
Positive Logic
Current
ON = Open pin or -0.2V to +0.3V. max.
OFF = +3.5V min. to +Vin max.
ON = Open pin (internally pulled up) or
+3.5V to +Vin max.
OFF = -0.3V to +0.4V. max. or ground
1 mA max.
Tracking/Sequencing (optional)
Slew Rate
Tracking accuracy, rising input
Tracking accuracy, falling input
See technical note on page 16
2 Volts per millisecond, max.
Vout = ±100 mV of Sequence In
Vout = ±100 mV of Sequence In
Output
Output Power
16.5W max.
Output Voltage Range
See Ordering Guide
Minimum Loading
No minimum load
Accuracy (50% load, untrimmed)
±1.5 % of Vnominal
Voltage Output Range (Note 13)
See Ordering Guide
Overvoltage Protection (Note 16)
None
Temperature Coefficient
±0.02% per °C of Vout range
Ripple/Noise (20 MHz bandwidth)
See Ordering Guide and note 8
Line/Load Regulation
See Ordering Guide and note 10
Efficiency
See Ordering Guide
Maximum Capacitive Loading (Note 14)
Cap-ESR=0.001 to 0.01 Ohms
200 μF
Cap-ESR >0.01 Ohms
TBD
Current Limit Inception (Note 6)
(98% of Vout setting, after warm up) 6 Amps
Short Circuit Mode
Short Circuit Current Output
Protection Method
Short Circuit Duration
Prebias Startup
10 mA
Hiccup autorecovery upon overload
removal. (Note 17)
Continuous, no damage
(output shorted to ground)
Converter will start up if the external
output voltage is less than Vnominal.
Power Good output
PGood TRUE (HI)
PGood FALSE (LO)
External pullup voltage
open drain configuration, 5 mA sink max.
(Vset -10%) < Vout < (Vset +10%)
0.0V < Vout < 0.4V. See App. note.
+5V max., referred to -Vin
www.murata-ps.com/support
OKL-T/3-W12 Series
Programmable Output 3-Amp iLGA SMT PoLs
Dynamic Characteristics
Dynamic Load Response
200μSec max. to within ±2% of final value
(50-100% load step, di/dt=1A/µSec) (Note 1)
Peak Deviation
250 mV
Start-Up Time
6 mSec for Vout=nominal (Vin On)
(Vin on or On/Off to Vout regulated) 6 mSec for Vout=nominal (Remote On/Off)
Switching Frequency
600 KHz
Environmental
Calculated MTBF (hours)
Telecordia method (4a)
Calculated MTBF (hours)
MIL-HDBK-217N2 method (4b)
OKL-T/3-W12 OKL2-T/3-W12
10,011,000
9,227,000
4,448,000
4,392,000
Operating Temperature Range (Ambient, vertical mount)
See derating curves
-40 to +85 °C. with derating (Note 9)
Storage Temperature Range
-55 to +125 °C.
Thermal Protection/Shutdown
Included in PWM
MSL Rating
2
Relative Humidity
to 85%/+85 °C., non-condensing
Physical
Outline Dimensions
See Mechanical Specifications
Weight
0.06 ounces (1.6 grams)
Plating Thickness
Gold overplate 1.18μ" (0.03μm)
on Nickel subplate 118.1μ" (3.0μm)
Safety
Certified to UL/cUL 60950-1, CSA-
C22.2 No. 60950-1, IEC/EN 60950-1,
2nd Edition
Restriction of Hazardous Substances
RoHS-6 (does not claim EU RoHS exemption
7b–lead in solder)
Absolute Maximum Ratings
Input Voltage (Continuous or transient) 0 V. to +15 Volts max.
On/Off Control
0 V. min. to +Vin max.
Input Reverse Polarity Protection
None, install external fuse
Output Current (Note 7)
Current-limited. Devices can withstand a
sustained short circuit without damage.
The outputs are not intended to accept
appreciable reverse current.
Storage Temperature
-55 to +125 ˚C.
Lead Temperature
See soldering specifications
Absolute maximums are stress ratings. Exposure of devices to greater than any of
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 or recommended.
Specification Notes:
(1) Specifications are typical at +25 °C, Vin=nominal (+12V.), Vout=nominal (+5V), full load, external caps and
natural convection unless otherwise indicated. Extended tests at full power must supply substantial forced
airflow.
All models are tested and specified with external 10μF ceramic output capacitors and a 22 μF external
input capacitor. All capacitors are low ESR types. These capacitors are necessary to accommodate our test
equipment and may not be required to achieve specified performance in your applications. However, Murata
Power Solutions recommends installation of these capacitors. All models are stable and regulate within
spec under no-load conditions.
(2) Input Back Ripple Current is tested and specified over a 5 Hz to 20 MHz bandwidth. Input filtering is Cin=2 x
100 μF ceramic, Cbus=1000 μF electrolytic, Lbus=1 μH.
(3) Note that Maximum Power Derating curves indicate an average current at nominal input voltage. At higher
temperatures and/or lower airflow, the DC/DC converter will tolerate brief full current outputs if the total
RMS current over time does not exceed the Derating curve.
MDC_OKL-T/3-W12 Series.C02 Page 3 of 17
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