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Showing 14 results View by: Thread Post Sort by
  • LM25007: Input/output ripple voltage dependent on Ron of LM25007

    Conor
    Conor
    TI Thinks Resolved
    Part Number: LM25007 Hi, When the Ron resistor is set to the standard 200kΩ, the input/output ripple voltage is 350mV. When the Ron resistor was set to 50kΩ, the ripple voltage was reduced to about 50mV. Q1. I checked the datasheet, but it…
    • over 1 year ago
    • Power management
    • Power management forum
  • LM25007: ALTERNATE PART NUMBER

    Simone Zanada
    Simone Zanada
    TI Thinks Resolved
    Part Number: LM25007 Other Parts Discussed in Thread: LM5007 Hello, I would like to know if LM5007 can be an alternate part for LM25007, being the pinout identical and since this latter seems to be unavailable from any distributor. Please also advise…
    • over 3 years ago
    • Power management
    • Power management forum
  • LM25007: LM25007

    Rasmus Ahlvar
    Rasmus Ahlvar
    TI Thinks Resolved
    Part Number: LM25007 Hi, Our customer is demanding IMDS numbers for the parts used in their design. Is this something that you support? I have also another part that is used in the same product: LM2936DTX-5.0 Is very greatful for your assistance. Best…
    • over 5 years ago
    • Power management
    • Power management forum
  • LM25007: LM25007 Switching power supply does not start if a rpre-bias voltage of 2.5V is applied to the output.

    Mathias Gabler
    Mathias Gabler
    TI Thinks Resolved
    Part Number: LM25007 After the LM25007 switching power supply, customer have a 3.3V LDO to generate the voltage for their microcontroller. These can be fed to an external power supply or just about the LM25007 switching power supply. If they externally…
    • over 5 years ago
    • Power management
    • Power management forum
  • LM25007: EMC Filter for DC/DC switching controller

    david moreliere
    david moreliere
    TI Thinks Resolved
    Part Number: LM25007 Hello During some EMC test I found perturbation on my Power supply due to the DC/DC of my board. I use a LM25007. Is there some specific recommandation using the LM25007 regarding this problem.
    • over 6 years ago
    • Power management
    • Power management forum
  • LM25007 in discontinue mode

    Jose Angel Roitegui
    Jose Angel Roitegui
    Other Parts Discussed in Thread: LM25007 Hi . My design of DC / DC doesn´t work properly. Allways starts in discontinue mode. RFB1 and RFB2 consumption is around 2,5mA. In the datasheet appears that with consumption from 500uA to 1mA not work in discontinuous…
    • over 10 years ago
    • Power management
    • Power management forum
  • Ouput of LM25007 become unstable under certain conditions

    Henry Li
    Henry Li
    Other Parts Discussed in Thread: LM25007 Hi, My name is Henry. I'm using LM25007 as power source to supply a heater(the heater is a 25 ohm resistor), input voltage of LM25007 is 24V, output voltage is 7.5V. there is a PWM signal to control a PNP transistor…
    • over 13 years ago
    • Power management
    • Power management forum
  • WEBENCH® Tools: LM25007MM(x) max frequency

    Georg Berliner
    Georg Berliner
    TI Thinks Resolved
    Other Parts Discussed in Thread: LM25007 Tool/software: WEBENCH® Design Tools Why the max frequency is now 50 kHz , before I could go much higher
    • over 5 years ago
    • Simulation, hardware & system design tools
    • Simulation, hardware & system design tools forum
  • Answered
  • RE: LM2842: Won't start - stays at 3.28V

    Thom
    Thom
    Resolved
    Hi I think I found the issue. After some additional tests, I noticed that the regulator will start if I apply a short voltage pulse to the Boot Cap. Then I found the document AN-2129 Boot Capacitor Regulation in LM25007 Constant-On-Time (COT) Converter…
    • over 6 years ago
    • Power management
    • Power management forum
  • UCC28881EVM-680: 230Vac to 5Vdc/400mA

    CHAMKHI HAITHEM
    CHAMKHI HAITHEM
    TI Thinks Resolved
    Part Number: UCC28881EVM-680 Other Parts Discussed in Thread: LM25007 , UCC28881 , Hi, I'm designing a power supply that should deliver 3.3V and 5V from 230VAC. The current rating is 300mA @ 3.3V and 100 mA @ 5V (Maximum values). My biggest concern…
    • over 7 years ago
    • Power management
    • Power management forum
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