• RE: LT3081 Output voltage using a DAC

    Thanks for the post.  You can drive SET on the LT3081 with a DAC, but keep in mind that the LT3081 and similar LDOs require that OUT and SET are always close to the same voltage.  That requirement is not well covered in the datasheets other than the +/…

  • Simulation of LT3081

    Hello,

    I did some simulation of the low dropout regulator LT3081 about the current limit. But no matter how I adjust the values and settings, the simulation values are always greater than the theoretical values.

    Please give me some suggestion.

    Thanks…

  • RE: LT1963A IN Pin Voltage range

    LT1963A absolute maximum input voltage is only ±20V. (-20V is only for reverse voltage protection)

    Which means having a 24V input is NOT recommended.

    If you want to create a design with a 24V input, you can check the part below (LT3081: Vin=±40V…

  • Best way to provide a minimum load.

    Some linear regulators, such as the LT3081, require a minimum load current for regulation (5mA worst-case for the LT3081).  Since it can be adjusted to 0V, using a  resistor for this purpose can require a low resistance resistor which can dissipate significant…

  • RE: LT3092: Problem with supporting BJT for higher current

    Thanks for the post.  I don't have time to test your circuit using hardware at the moment, but I will mention that the LT3092 and other similar LDOs will act strangely if SET is driven too far away from OUT.  See the link below to a post that discusses…

  • 使用LT3083设计恒流源时,电流不稳定问题

    各位大佬好:

            小弟最近在使用LT3083设计一个功率较大(1A级别)的线性LED驱动器,方法是使用DAC输出参考电压Vref,连接到LT3083的Vset引脚,但是在测试时发现LT3083,当LT3083输出电流略大时(30mA),电流就十分不稳定。

    测试条件简述如下:

    1. 供电电源使用DC/DC 或者LDO时,二者测试效果无差别,电流波动大;

    2. 负载使用水泥电阻 或 LED  时,二者测试效果无差别,电流波动大;

    3. 参考电压Vref来源 : 使用DAC8563 或者NI 采集卡USB6009…

  • TAGS LIST: Power by Linear

    LTM8045
    LTM8049
    LTM4651
    LTM4661
    LTM4686
    LTM4676
    LTM4686-1
    LTM4676A
    LTM4675
    LTM4677
    LTM4678
    LTM8062
    LTM8061
    LTM8052
    LTM8026
    LTM8056
    LTM8064
    LTM8054
    LTM8055
    LTM4600
    LTM4600HV
    LTM4608A
    LTM4604A
    LTM8032