Part Number:TPS3801
Dear SIR: (continue before question ,because didn't reply)
Thank for your reply.
But,May I double confirming :
(1) according to your reply:
Is that meaning as below ?:
For VDD pin or PFI pin Vref is 0.551V
TPS3103K33 and TPS3103E16 's VDD pin have "internal resistor divider" therefore base on different sku.(for example: K33 ,E16 ) have different Vth.(K33 ->Vth is 2.941 ,E16 vth is 1.523)
MR# pin have internal pull up to VDD resistor.
But, PFI pin without "internal resistor divider" ,therefore PFI pin need add external resistor divider for met requirement by Vth =0.551 x (Rtop + Rbottom) / Rbottom calculator .
Therefore ,
TPS3103K33 vs MIC2774N-29:
different I: TPS3103K33 Vth = 2.941V MIC2774N-29 Vth = 2.93V
different II: TPS3103K33 Vref = 0.551V MIC2774N-29 Vref =0.3V
TPS3103E16 vs MIC2774N-17:
different I: TPS3103E16 Vth = 1.523V MIC2774N-29 Vth = 1.69V
different II: TPS3103E16 Vref = 0.551V MIC2774N-29 Vref =0.3V
different III: TPS3103 RESET internal Reset Logic Timer separate with PFI pin vs MIC2774N internal AND then delay .
[As you mention before that recommend to wire together between TPS3103 's RESET pin PFO pin by external ,But ,the behavior will the same as MIC2774N ? How ? ]
different IV: TPS3103 Delay Min= 65ms MIC2774N Delay Min= 140ms
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The TPS3103 has a 2.941V version (TPS3103K33) but does not have a 1.69V version, the closest is 1.523V (TPS3103E16) or 1.843V (TPS3103H20).
For the PFI pin, the threshold is 0.551V so you use a resistor divider with
trigger voltage = 0.551 x (Rtop + Rbottom) / Rbottom
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(2) Seams [A circuit] MIC2774N psec. mention that "It will remain asserted for no less than 140ms after Vin and VDD return above the threshold limits."
But, TPS3103 spec. mention that Min :65ms Max:195ms. Is that meaning TPS3103 min: 65ms and can't replace MIC2774N Min : 140ms ?
(Or that TPS3103 min: 65 ms Max:196 ms base on different sku (for example: TPS3103K33 ,TPS3103E16 ,....) ,by different strap pin for select ,... that have different ?)
Thanks