• RE: LTC3260

    Hi Clt,

    LTC3265 has a boost charge pump which only has a max input of 16V. It also means you cannot produce a stepped down +12V output.

    However, the inverting charge pump can take 24V input and produce -12V output through the negative LDO.

    You can try…

  • RE: LTC3260 LDO+ Inrush current

    Hi Osamu,

    Sorry for late reply. i hope you found an answer earlier. The soft-start for the LDOs is only about 75us (page 9 of datasheet). Current limit is about 100mA (page 3 of datasheet). When the part starts-up, it needs to charge the 10uF LDO output…

  • LTC3260 slowly decreasing output voltage level

    Hi,

    We draw  a few hundred uA from both LDO outputs of LTC3260. When we first power up we have [LDO-] fine but when we check [VOUT-] it is slighly lower (-4v8 instead of -5v0).

    Over time [VOUT-] goes to -3v0 and [LDO-] becomes zero. If we power down and…

  • Ltc3260 noise reduction

    Hello, 

    I am involved in  the design  of the amplifying and clipping section of a guitar audio processor embedding your Ad528x digipots. For that a dual supply +-5V is necessary and we are currently exploiting (in the first working prototype)  the LTC3260

    …

  • Problem using a LTC3260 to power an AD7124-8

    Hi,

    I'm using a LTC3260 with a 5V input and ±1.8V output to give power to an AD7124-8. When I use a linear power supply with the pair LM317/LM337 there are no problem, but since I use the LTC3260 the values obtained from de ADC are erratic (it gives any…

  • LTC3260 not working

    Hi,

    I'm trying to get the LTC3260 working but currently the LDO+ only reflects the Vin whilst the LDO- only reflects the Vout.

    I used the typical application scheme on page 1 from the datasheet.

    Attached is the circuit with measurements done.

    Thanks…

  • LTC3260 not working

    Hi,

    I'm trying to get the LTC3260 working but currently the LDO+ only reflects the Vin whilst the LDO- only reflects the Vout.

    I used the typical application scheme on page 1 from the datasheet.

    Attached is the circuit with measurements done.

    Thanks…

  • RE: LTC3260的负LDO为什么没有输出？

    重新焊接一个新的电路后，LTC3260的电路终于调通了（可能是由于在用示波器测试时静电造成芯片损坏吧），24V输入，正负12V输出，给模拟电路供电，所以关注电源噪声指标，因此设计工作在恒定频率模式(MODE为低)，充电泵工作在500kHz(RT管脚接地)，经实际帯载测试，电源噪声很好，适合给模拟电路供电。但现在的问题是LTC3260的LDO为50mA，只能带3路模拟电路，请问要带6路怎么处理？有没有替代芯片或将两个LTC3260并联增加帯载能力？求回复，谢谢！

  • Help troubleshooting regulated dual-rail charge pump (LTC3260) seeing -Vin on negative regulated output

    Hi all, trying to figure out why my charge pump circuit is not working. This is the LTC3260, which has both an inverter and a positive / negative LDO for a dual rail. I'm using it with a 9V battery as Vin, and trying to get +/- 5V regulated lines.…

  • 紧急求助！！！LTC3260的供电电流不满足设计需要，请问如何能够拓展其供电能力？

    用LTC3260芯片设计了一个24V转正负12V的电源给模拟电路供电，经测试电源噪声很低，但是由于需要6路模拟滤波电路，正负电流各为50mA左右，经实际测试LTC3260芯片带不动6路模拟电路，只能带动3路，如果要6路同时供电，请问有没有同等功能替代的芯片，或者能够将两路LTC3260输出并在一起增加帯载能力？