• TPS7A85: Reverse Current Diode Selection

  

  Eric Fu51

  TI Thinks Resolved

  Part Number: TPS7A85 Hi, I want to follow up on another thread: [Resolved] TPS7A85: Shottky Diode for reverse current protection - Power management forum - Power management - TI E2E support forums In the thread, it mentioned to size the diode to 1/2CV…

  • 1 month ago
  • Power management
  • Power management forum
Answered

• TPS7A85: Webench schematics error

  

  Kazuhiko Hirano

  Resolved

  Part Number: TPS7A85 Hello, WeBench simulation works wrongly for TPS7A85 somehow. Though setting 3.3V Vout, 1.6V pin is not connected to GND at the schematics on the WeBench. My customer designed a wrong PCB board due to this WeBench error. Please correct…

  • Resolved

  • 2 months ago
  • Power management
  • Power management forum
Answered

• TPS7A85: BIAS

  

  Kazuhiko Hirano

  Resolved

  Part Number: TPS7A85 Hello, When using BIAS pin, decoupling a capacitor is required between BIAS and GND? If yes, what value is recommended? When not using BIAS pin, can BIAS pin be left just unconnected? Best regards, K.Hirano

  • Resolved

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

• TPS7A85A: Why does TPS7A85A have worse thermal characteristic than TPS7A85?

  

  MINKYUNG KIM

  Resolved

  Part Number: TPS7A85A Other Parts Discussed in Thread: TPS7A85 Hi Team, I understand the difference between TPS7A85 and TPS7A85A from the related thread. One question is : Why are the thermal characteristics (Theta_JC, Theta_JA, etc.) worse in TPS7A85A…

  • Resolved

  • 5 months ago
  • Power management
  • Power management forum

• TPS7A85: enable operation if floated

  

  MINKYUNG KIM

  TI Thinks Resolved

  Part Number: TPS7A85 Hi there, My customer didn't use pull-up resistor as below. 1. Can it cause any issue? Should I guide the customer to connect the pull-up/down resistor to make sure the normal operation? 2. EN of this device is active high as…

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

• RE: TPS7A85: Max voltage on EN pin

  

  JCHK

  Resolved

  I confirmed that the VIN=1.1V, VBIAS= 3.0V and EN being driven at 3.3V is absolutely not a spec violation. This is a datasheet error. I hope this clears this up.

  • 8 months ago
  • Power management
  • Power management forum

• TPS7A85: It has voltage drop problem at some condition.

  

  Chris kang

  Part Number: TPS7A85 HI TI team. I have problem using TPS7A85 below condition. Condition - input voltage : 5.8V - output voltage : 5V - soft start C value : 100nf. If i change the operating temperature rapidly(using freezer spray, -30 degree Celsius…

  • 9 months ago
  • Power management
  • Power management forum

• TPS7A85: VBIAS supply threshold

  

  sangeetha s1

  TI Thinks Resolved

  Part Number: TPS7A85 Hi Team, We are using the TPS7A8500 LDO in our application.Find the following requirements, 1. Vin : 2.2V & Vout: 1.9V , Iout : 2.6A 2.Vin : 1.4V & Vout: 1.1V,Iout : 3.7A We dont have 5V supply in our board,Shall we give…

  • 11 months ago
  • Power management
  • Power management forum
Answered

• TPS7A85: What R1 and R2 are recommended for Vout=0.82V

  

  Kazuhiko Hirano

  Resolved

  Part Number: TPS7A85 Hello, My customer would like to get Vout=0.82V. If R1=12.4Kohms as the datasheet recommends, R2 is calculated as 496Kohms. Then this resistive network can not provide 5uA. From noise and PSRR point of view, and to provide >5uA,…

  • Resolved

  • 11 months ago
  • Power management
  • Power management forum
Answered

• TPS7A85: Shottky Diode for reverse current protection

  

  Omer Kvitel

  Resolved

  Part Number: TPS7A85 Hi I would like to understand how to choose the shottky diode for reverse current protection: From the data sheet, there is a recommendation to use a shottky diode for reverse current protection: (Figure 57) http://www.ti.com/tool…

  • Resolved

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

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