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  • RE: LM57-Q1: LM57-Q1:Change Trip point dynamically

    Hi Sugiyama-san, As far as I know, LM57 released two type of hysteresis 5°C and 10°C for automotive. Based on your description, it looks like customer had the 5°C hysteresis. Could you please provide me more information on customer's application via…

  • LM57: Input Filtering

    TI Thinks Resolved
    Part Number: LM57 A customer is experiencing glitches on the output of the LM57. The device is applied into a noisy environment and it was verified there is noise reflected on Vsense 1 & 2. Do we have any input filtering guidelines? Furthermore, does…

  • LM57: Setting the trip point with a voltage?

    TI Thinks Resolved
    Part Number: LM57 Other Parts Discussed in Thread: TMP300 , TMP107 Customer requested an automatic temperature trip point in each of their digital modules, to force a heating of the processor when the temperature is below a set point like −35°C for instance…

  • LM57 Trip Point

    Other Parts Discussed in Thread: LM57 I am working with a circuit that has an LM57C. The trip point seems to be about 15 degrees C higher than it should be. I expect it to trip at 59.3 degrees, but it doesn't trip until it reaches around 75 degrees. …

  • RE: LM57 Temperature sensor - response time

    Hi Anne, I just want to confirm with you if you are talking about the Vtemp or Tover output of the LM57. -Michael Wong

  • LM57 - not setting outputs when the temp set point is reached.

    TI Thinks Resolved
    Other Parts Discussed in Thread: LM57 , LM26 , LM26LV I am using an LM57 device to initiate an automatic thermal override shutdown of an induction heater. Here is the LM57 portion of schematic. R3: 280K, ±1% ±100ppm/°C digikey part number: 541-280KHCT…

  • LM26LV, LM57 : Die Attach Pad voltage rating

    Other Parts Discussed in Thread: LM57 , LM26LV , LM35 Dear, in the datasheets for LM26LV, LM57 there is stated that "best thermal conductivity between the device and the PCB is achieved by soldering the DAP of the package to the thermal pad on the PCB…

  • LM57 Rsense value for in-circuit test

    Other Parts Discussed in Thread: LM57 I have an application using a LM57 temperature sensor set to trip at -34.5C. During in-circuit testing the value of Rsense2 is connected to 0V to force TOVER in-active at room temperature. From the datasheet it…

  • Why does TI LM57 analog temp sensor(connected to MSP430 ADC) have slow ramp up ???

    Other Parts Discussed in Thread: LM57 , MSP430F5310 Hi Everyone I have a strange issue with using the TI MSP430F5310 ADC and the TI LM57 temp sensor. the Rsense values are at 46.4k and 499.9k for Rsense1/Rsense2. The issue is that, when my device…

  • LM57 V(TEMP) Design Considerations

    Other Parts Discussed in Thread: LM57 I would like to design a simple board which controls a resistor as a heater. At T(1), heater (resistor) will be ON and at T(2), heater will be OFF and T(1)<T(2). I can set the R(SENSE) and hysteresis values and if…

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