• RE: LT1618 Constant Current Source

    Hello,

    the regulation accuracy is stated in the ds.

    Regarding your app: Do you know the basic calculation for a boost topology?

    Your max Pout is 2.4W (30V*80mA), With efficiency of approx 80% you have to deliver 3W. 3W with 5V supply are 600mA (DC). You…

  • LT1618 LED driver Design

    Hello,

    We came across the LT1618 part and we are planning to make use of the same as LED driver with two controllable LED brightness modes using the FET circuit shown in the image.

    Requirement

    Input Voltage : 5V (from USB)

    2 LEDs in series with Vf ranging…

  • LT1618 - Wide input range with a fixed 3.3V output

    Hi!

    Is it possible to have a single circuit with the LT1618 that outputs 3.3V with an input range of 1.8-18V?

    Best,

  • 关于LT1618输出增加倍压电路后产生的问题,求解决,谢谢!

    真心求大神帮忙解决,谢谢!

    1、我的目的是:通过LT1618将3.3dV升压到6V和24V,再通过倍压电路,将其升压至原来的两倍。

    2、如原理图右上部分所示:我在最基本的电路中加了倍压电路,就像LT1613datasheet所给案例一样。

    原理图的芯片我是拿同样封装的芯片替换的,引脚名称请看外部标识。

    3、出现的问题:

    0负载,在不增加倍压电路的情况下,可以正常工作,6V和24V输出纹波仅600uV到1.4mV。

    但是如下两图所示,在6V电压下,增加了倍压电路后,就会产生如图所示的36.8hZ的三角波…

  • There is a problem when I add a voltage doubling circuit in a DCDC boost circuit output with LT1618, help! Thank you.

    I need help! Thank you!

    1、My objective is: Design a circuit can boost 3.3V to 6V and 24V, then use voltage doubling circuit boost to 12V and 24V.

    2、As shown below is my schematic and layout: I add a voltage doubling circuit in output, just like…

  • DC780B Demo Board .asc file not opening with LTspice

    http://www.analog.com/en/products/lt1618.html#product-evaluationkit

    DC780B is the demo board for the LT1618.  Can anyone confirm that the .ASC file provided in the "DC780B - Design File" download will not open with LTspice? 

    It is giving me an…

  • 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