ADC 6021 Specifiche Scaricare il pdf (Pagina 46)

MYXPM6021*

Revision 1.1 - 10/21/14

*Advanced information. Subject to change without notice.

MYXPM6021*

Form #: CSI-D-685 Document 011

Figure 17: V1P8A Efciency

9.6.5.3 V1P8A Subsystems

V1P8U:

ThispowerrailisprimarilytosupplyLPDDR2orLPDDR3RAMs.MYXPM6021providesacontrolsignalV1P8U_EN_B

suppliedbyVSYSandderivedfromSLP_S4_BsentoutbytheSoC.WhenV1P8U_EN_Bisassertedlow,thesignalslew

rateiscontrolledtolimittheinrushcurrentwhentheexternalP-channelFETisturnedon.Thecurrentofthispowerrailis

amaximum355mA.

V1P8UexternalP-channelpowerswitchparameters:

Rdson (Vgs=4V) 50-97mohm

Input capacitance, Ciss 750-2315pF

Output capacitance, Coss 150-530pF

Reverse transfer capacitance, Crss 100-465pF

V1P8S:

Themaximumcurrentofthispowerrailis145mA,sourcingtheSoC,USBPHY,UICCSIM…MYXPM6021controlsthis

powerrailwhilederivingtheinformationfromSoCSLP_S3_Bsignalandswitchingtherailinternally.ThetypicalRDSon

valueofthisinternalswitchis170mΩ.

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ADC 6021 Specifiche Pagina 46