參數資料
型號： PMB8218HPN
廠商： ERICSSON POWER MODULES AB
元件分類： 電源模塊
英文描述： 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
封裝： ROHS COMPLIANT PACKAGE-10
文件頁數： 21/32頁
文件大小： 1551K
代理商： PMB8218HPN
EN/LZT146066R2A EricssonPowerModules,April2007
PMB8818TPDatasheet
Vout(V)
Radj(kohm)
Vtrim(V)
0.75
Open
1.0
41.42
0.684
1.2
22.46
0.670
1.5
13.05
0.650
1.8
9.024
0.630
2.5
5.009
0.583
3.3
3.122
0.530
5.00
1.472
0.417
5.50
1.212
0.383
Circuitconfigurationforoutputvoltageadjust
Increase
+Out
GND
Vadj
Load
Radj
Sense
Operating Information
Remote Control (RC)
StandardVersionwith"positivelogic".
RC
Regulator
condition
min
typ
max
Unit
Lowlevel
referencedtoGND
OFF
-0.3
0.3
V
Open
ON
1.7
16
V
TheRCpinmaybeusedtoturnonorturnofftheregulator
usingasuitableopencollectorfunction.Turnoffisachieved
byconnectingtheRCpintoground.Theregulatorwillrunin
normaloperationwhentheRCpinisleftopen.
RC
+IN
Module
+IN
GND
Input Voltage
Theinputvoltagerange8.3…16VdcmakesthePMB8000
easytouseinintermediatebusapplicationswhenpow-
eredbyanon-regulatedbusconverteroraregulatedbus
converter.Foroutputvoltagetrimsover5.25Vouttheinput
voltagemustbereducedtoamaximumof14Vinorderto
maintainspecifieddata.
RC
Regulator
condition
min
typ
max
Unit
Highlevel
referencedtoGND
OFF
1.7
16
V
Open
ON
TheRCpinmaybeusedtoturnonorturnofftheregulator
usingasuitableopencollectorfunction.Turnoffisachieved
byconnectingtheRCpintotheinputvoltage.Theregulator
willruninnormaloperationwhentheRCpinisleftopen.
RC
Vi
Module
Vi
GND
Option"negativelogic"
Output Voltage Adjust (Vadj)
AllPMB8000SeriesDC/DCregulatorshaveanOutput
Voltageadjustpin(Vadj).Thispincanbeusedtoadjustthe
outputvoltageaboveoutputvoltageinitialsetting(0.75V).
Whenincreasingtheoutputvoltagethemaximumpower
ratingoftheconverterremainsthesame,andtheoutput
currentcapabilitywillthereforedecreasecorrespondingly.
Toincreasetheoutputvoltagearesistororavoltagesignal
shouldbeconnected/appliedbetweenVadjpinandGND,
pin5.Theresistor/voltagesignalvalueforsomestandard
outputtrimsaregivenbelow,forothervoltagesetpoints
usetheformulastocalculatethecorrectresistororvoltage
signal.Foroutputvoltagesof5.25Vandhighertheinput
voltageisrestrictedtomaximum14Vin.
Formula1:Radj=(10500/(Vout–0.7525))–1000(ohm)
Formula2:Vtrim=(0.7–0.0667x(Vout–0.7525))(V)
Turn off input voltage
ThePMB8000SeriesDC/DCregulatorsmonitortheinput
voltageandwillturnonandturnoffatpredeterminedlevels.
Theminimumhysteresisbetweenturnonandturnoffinput
voltageis0.2Vwheretheturnoninputvoltageisthehigh-
est.
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