UWR-12/1250-D24A PDF VIEW DOWNLOAD 数据手册 , UWR-12/1250-D24A 数据表 -C and D TECHNOLOGIES DatsheetQ ...

UWR-12/1250-D24A 查看數據表（PDF） - C and D TECHNOLOGIES

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UWR-12/1250-D24A

Single Output A-Series, UWR Models

C and D TECHNOLOGIES

UWR-12/1250-D24A Datasheet PDF : 12 Pages

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7-15W, SINGLE OUTPUT DC/DC CONVERTERS

UWR Models

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Start-Up Threshold and Undervoltage Shutdown

Under normal start-up conditions, devices will not begin to regulate until the

ramping-up input voltage exceeds the Start-Up Threshold Voltage (35V for

"D48A" models). Once operating, devices will not turn off until the input volt-

age drops below the Undervoltage Shutdown/Lockout limit (34V for "D48A"

models). Subsequent re-start will not occur until the input is brought back

up to the Start-Up Threshold. This built-in hysteresis obviously avoids any

indeterminate on/off situations at a single voltage.

Start-Up Time

The VIN to VOUT Start-Up Time is the interval between the time at which

a ramping input voltage crosses the turn-on threshold point and the fully-

loaded output voltage enters and remains within its speciﬁed accuracy band.

Actual measured times will vary with input source impedance, external input

capacitance, and the slew rate and ﬁnal value of the input voltage as it

appears to the converter.

The On/Off to VOUT Start-Up Time assumes the converter is turned off via

the On/Off Control with the nominal input voltage already applied to the

converter. The speciﬁcation deﬁnes the interval between the time at which the

converter is turned on and the fully-loaded output voltage enters and remains

within its speciﬁed accuracy band.

Accuracy of adjustment is subject to tolerances or resistor values and

factory-adjusted output accuracy. VO = desired output voltage.

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