TPS62745: I need a buck converter with similar spec of above mentioned part number, but with a different out put voltage and temperature

Hello Aswin, 

Few question to help us provide the right device: 

• For the temp range, is that your ambient temperature of junction?
• What is the max current, you provided min of 6mA, but is the max? 
• What is the out put voltage, you said different than 62745, can you provide a range? 
• VIN, I see you required 1.8V and 30V, are they min and max VIN range? or you expect the device to operate above these. I am looking for ABS max condition. like the TPS62745, its abs max is 12V but ROC is 10V. 

Thanks! 

Tahar

Hi Tahar,

Yes, the temperature range given is the ambient temperature of the required device (-55-80 C above).

The required current is 6mA and we can consider maximum of 10mA.

Required output Voltage: 3.3V

1.8V and 30V Is the MIN and MAX value of VIN

I need this wide range of input because it is powered with a 4-20mA input signals, so it needs to satisfy the DC-DC startup condition.

Hi Nancy,

I cant find one that is why I had requested your help. Kindly help me to find a part which suits these specifications

Specifications: 

Input Voltage range : 1.8,2,3.3V- 30V

Output Voltage:3.3V

Temperature range: –55°C to 85°C or above

Output current: above 6mA 

Switching Frequency: Should be greater than 100KHZ

Ripple frequency: In the range of 100KHZ

Buck converter with intrinsic safety feature is required(Lower value inductor(Max 10uH) and Lower value capacitor(20uF-sum of CIN and COUT)

Can you please share the mentioned 6 parts?

Hi Aswin,

We don't support Buck-boost converter and are not familiar with those parts. Please check the datasheet on ti.com and post a new E2E with buck-boost part number if you have any questions for those parts. The expert will help you there. I will close this post.

Hope this helps,

Thanks,

Nancy

Hi Aswin,

The input is 2V-15V. What is output voltage? If output is 3.3V. You need a buck-boost converter. Please create a new post with topic Buck-boost converter, then Buck-boost team will help you. I only support Buck.

Thanks,

Nancy