TPS53355: PG sink capacity for TPS53355

JC Lee

Part Number: TPS53355

As following figure, I think the minimum resistance of PR22 is depend on sink capacity of inner PG MOSFET and current limit of VREG (30mA)

May I know what is limitation for minimum resistance?

Thanks a lot!

over 7 years ago

0 JohnTucker over 7 years ago

TI__Guru**** 191445 points

JC,

The maximum on resistance of the PG pull down FET is 55 ohm. you should size your resistor so the voltage at the low level is below your logic threshold. so the minimum resistance is Rmin = Vreg5 - Vlow / (Vlow / 55)

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TPS53355: PG sink capacity for TPS53355