Note:
1. This datasheet is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’ s specifications are subject to
change or our products in it may be discontinued without advance notice. Please check with our sales representatives or
product engineers before ordering.
2. This datasheet has only typical specifications because there is no space for detailed specifications. Therefore, please
approve our product specifications or transact the approval sheet for product specifications before ordering.
株式会社 村田製作所
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MYLPW3R34EAFN Specification
7
9.2.4. Remote On/Off Control
Start and halt is possible with a control signal.
While the control signal stops output from DC-DC converter, alarm output does not send any signal.
Start : RC is open or connected to-Vin.
Halt : RC is connected to +Vin.
9.2.5. Alarm Output
ALM pin is down to the same voltage level of-Vin pin and sends an alarm signal. (open-drain output)
Sink current in ALM pin is Max.10mA.
It is possible to halt all of the connected DC-DC converters when any one is halted with over voltage
protection or low voltage protection, with connecting all ALM pins for the application of
parallel/multiple operation with plural DC-DC converters.
The maximum number connecting DC-DC converters is 10pcs for the purpose of halting all DC-DC
converters connected with ALM pin each other.
Please contact us when more than 10pcs.
9.2.6. Synchronous Turn-on/off
It is possible to avoid the unevenness of turn-on timing with unifying the various Turn-on input
voltage to a certain voltage which one DC-DC converter has, and with connecting PO pins each
other for the application of parallel/multiple operation of plural DC-DC converters.
It is necessary to connect PO pins for parallel operation.
The maximum number connecting DC-DC converters is 10pcs for the purpose of synchronous
turn-on/off with connecting PO pins.
Please contact us when more than 10pcs.
9.3. Reliability
9.3.1. Reliability Test Items.
Item Test Condition Criteria
Humidity
According to JIS-C-0022
+40±2℃, 90 to 95%RH, 100 hours.
Leave 4 hours at room temperature.
Temperature
Cycles
Repeat cycle 5 times. Leave 2 hours at room
temperature.
1. –40±3℃/30minutes
2. Room Temp./5-10minutes
3. 85±2℃/30minutes
4. Room Temp./5-10minutes
Mechanical
Vibration
10 to 55Hz, max. 1.5mm amplitude, 1 hour
for each of X, Y, Z directions.
Mechanical
Shock
20G, 1 time for each of X, Y, Z directions.
No damage in appearance and no
deviation of electrical characteristics
before and after the test.
9.3.2. Reliability Prediction (For reference only)
MTBF is 2.81 million hours = 321 years
at 50% nominal output current and Ta=40℃,
calculated by Telcordia SR-332.
