Hi,

for a project I need to control 2 independant fans. The manufacturer of the fan does not allow to set the fan speed via a PWM signal on the VCC line (no separate PWM input is provided), but only by varying the DC supply voltage (within a range of…

which formula used to calculate resistor value for specific Vout in Evaluation board DC2279A.(R3,R4,R5,R6,R7,R8)

What could be value of R9(OPT) to set vout = 0.5

Sushmita

Hello,

I willing to imlement PSU with buck converter with LT3088 LDO and looking at example in datasheet p26 I see one portion of circuit which is of unclear function. Could someone explain what it does and how it works?

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…

A customer asks concerning the LT3080:  "We operate at: Vin = 3.3V Vout = 3V, Vcontrol = 5V, output current max. = 200mA. Is this ok?"

This is a common question so I will answer it myself in a REPLY post.

Here is a question that I received from a customer quite a while ago, but I will post the question here and then also post the answer since the question applies to multiple LDOs and I get similar questions frequently.  Here is the customer's question:…

A customer essentially asks, "What is the easiest way to shutdown the LT3081 using a positive referenced logic signal?"  I get this question a lot so I will answer myself in a reply post.

I get this question frequently so I will post the question and then answer myself:

"I made a mistake and did not notice that the LT3080 datasheet says for the DD PACKAGE that "EXPOSED PAD (PIN 9) IS OUT, MUST BE SOLDERED TO PCB".  I made…