• TPS3840: TPS3840 simulation showing wrong output level at low voltage

  

  Sanjib Acharya

  TI Thinks Resolved

  Part Number: TPS3840 Other Parts Discussed in Thread: TPS3842 Tool/software: Hello, I am planning to use the TPS3842 device for under-voltage monitoring. Since I could not find the PSpice model of the TPS3842, I used the PSpice model of the TPS3840…

  • 9 months ago
  • Power management
  • Power management forum

• TPS3840-Q1: Question about input current

  

  Chase Jeong

  TI Thinks Resolved

  Part Number: TPS3840-Q1 Other Parts Discussed in Thread: TPS3840 Dear TI experts, My customer now test TPS3840DL30DBVRQ1 on their own PCB. Could you check the schematic below first? While testing they found that the waveform below. (Green:BATT_IN…

  • 2 months ago
  • Power management
  • Power management forum

• TPS3840: BOM to BOM suggestion for R3112N201A

  

  Peter Tseng

  TI Thinks Resolved

  Part Number: TPS3840 Tool/software: Hi Team, I just suggest TPS3840DL20DBVR for R3112N201A replacement. https://www.mouser.tw/datasheet/2/294/r3112_ea-3219705.pdf They are p2p but different in delay time setting. The customer wants to keep the…

  • 7 months ago
  • Power management
  • Power management forum
Answered

• TPS3840: The resistor values of Vdd

  

  R.Fukunaga

  Resolved

  Part Number: TPS3840 Tool/software: Hi all, I would like to ask about the multiplier of the external voltage divider. The datasheet says, ”The resistor values must not be so large that the external resistor divider affects the accuracy or operation…

  • Resolved

  • 9 months ago
  • Power management
  • Power management forum

• TPS3840: RESET behavior not in line with datasheet

  

  Nick Molinari

  TI Thinks Resolved

  Part Number: TPS3840 Tool/software: I have a design below, I am using this to shutdown any ICs that are using +5V in the event of an undervoltage condition. I am specifically using a TPS3840PH45, so the expected behavior is for the RESET to output a HIGH…

  • 8 months ago
  • Power management
  • Power management forum

• TPS3840: Detection voltage temperature coefficient

  

  Shuhei Goto

  TI Thinks Resolved

  Part Number: TPS3840 Tool/software: Hi team, Is there any equation shows the relationship detection voltage and temperature? For instance, below is the detection voltage temperature coefficient of S-809 in datasheet. Best regards, Goto

  • over 1 year ago
  • Power management
  • Power management forum
Answered

• TPS3840: Capacitor for the CT pin

  

  Yoshifumi Shimojima

  Resolved

  Part Number: TPS3840 Tool/software: Dear TI support team, Can I use capacitors in parallel for the CT pin? Best regards, Yoshifumi Shimojima

  • Resolved

  • 10 months ago
  • Power management
  • Power management forum
Answered

• TPS3840: When will the product with a threshold of 3.7V be released?

  

  Kyohei

  Resolved

  Part Number: TPS3840 Tool/software: Hi team, It seems that the product with a threshold of 3.7V has not been released yet. When will it be released? Best regards, Kyohei

  • Resolved

  • 6 months ago
  • Power management
  • Power management forum

• TPS3840: Device not functional after a few power-ups

  

  Bruno Andrade

  TI Thinks Resolved

  Part Number: TPS3840 Tool/software: Hi, I have this protection circuit for reverse polarity and battery undervoltage: It worked fine for 6 or 7 times that I powered up with my PSU at 7.2v. Circuit was cutting just fine when voltage was going…

  • 8 months ago
  • Power management
  • Power management forum
Answered

• TPS3840: DC Bias characteristics for the delay capacitor

  

  Shuhei Goto

  Resolved

  Part Number: TPS3840 Tool/software: Hi team, For the calculation of delay time, do we have to consider the DC bias characteristics of the capacitor? If so, what is the applied voltage? Best regards, Goto

  • Resolved

  • 11 months ago
  • Power management
  • Power management forum

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