OKL2-T/3-W12P-C 查看數據表（PDF） - Murata Power Solutions
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OKL2-T/3-W12P-C Datasheet PDF : 17 Pages
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OKL-T/3-W12 Series
Programmable Output 3-Amp iLGA SMT PoLs
Specification Notes, Cont.:
(4a) Mean Time Before Failure is calculated using the Telcordia (Belcore) SR-332 Method 1, Case 3, ground fixed
conditions, Tpcboard=+25 ˚C, full output load, natural air convection.
(4b) Mean Time Before Failure is calculated using the MIL-HDBK-217N2 method, ground benign, +25ºC., full output
load, natural convection.
(5) The On/Off Control Input should use either a switch or an open collector/open drain transistor referenced to
-Input Common. A logic gate may also be used by applying appropriate external voltages which do not exceed
+Vin.
(6) Short circuit shutdown begins when the output voltage degrades approximately 2% from the selected setting.
(7) Please observe the voltage input and output specifications in the Voltage Range Graph on page 16.
(8) Output noise may be further reduced by adding an external filter. At zero output current, the output may contain
low frequency components which exceed the ripple specification. The output may be operated indefinitely with
no load.
(9) All models are fully operational and meet published specifications, including “cold start” at –40˚ C.
(10) Regulation specifications describe the deviation as the line input voltage or output load current is varied from a
nominal midpoint value to either extreme.
(11) Other input or output voltage ranges will be reviewed under scheduled quantity special order.
(12) Maximum PC board temperature is measured with the sensor in the center of the converter.
(13) Do not exceed maximum power specifications when adjusting the output trim.
(14) The maximum output capacitive loads depend on the the Equivalent Series Resistance (ESR) of the external
output capacitor and, to a lesser extent, the distance and series impedance to the load. Larger caps will reduce
output noise but may change the transient response. Newer ceramic caps with very low ESR may require lower
capacitor values to avoid instability. Thoroughly test your capacitors in the application. Please refer to the Output
Capacitive Load Application Note.
(15) Do not allow the input voltage to degrade lower than the input undervoltage shutdown voltage at all times.
Otherwise, you risk having the converter turn off. The undervoltage shutdown is not latching and will attempt to
recover when the input is brought back into normal operating range.
(16) The outputs are not intended to sink appreciable reverse current.
(17) “Hiccup” overcurrent operation repeatedly attempts to restart the converter with a brief, full-current output. If the
overcurrent condition still exists, the restart current will be removed and then tried again. This short current pulse
prevents overheating and damaging the converter. Once the fault is removed, the converter immediately recovers
normal operation.
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MDC_OKL-T/3-W12 Series.C02 Page 4 of 17
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