N64 voltage regulator PQ7VZ5

[gorgyrip]

I can't find it for sale. Is it ok if I replace it with LM317? Or maybe someone knows a direct replacement.
I've attached the schematic.
Datasheet is here:

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pdf.datasheetcatalog.com

 

[Trimesh]

I don't think a LM317 is going to work - that has a dropout voltage of between 1 and 2 volts depending on operating conditions - and the output of that regulator is only 650mV lower than the input - the spec sheet says the dropout is < 500mV, so that's probably your limiting parameter.

 

[gorgyrip]

I don't think a LM317 is going to work - that has a dropout voltage of between 1 and 2 volts depending on operating conditions - and the output of that regulator is only 650mV lower than the input - the spec sheet says the dropout is < 500mV, so that's probably your limiting parameter.

Thank you. What voltage regulator should i try?

 

[Trimesh]

Thank you. What voltage regulator should i try?

You could try this one:

LDFMPT-TR STMicroelectronics | Integrated Circuits (ICs) | DigiKey

Order today, ships today. LDFMPT-TR – Linear Voltage Regulator IC Positive Adjustable 1 Output 500mA PPAK from STMicroelectronics. Pricing and Availability on millions of electronic components from Digi-Key Electronics.

www.digikey.com

2.5V-16V input
500mA load capacity
300mV dropout at full load

It's got an 800mV reference voltage, so you are going to need feedback resistors with a ratio of 2.3125:1 - if you use 0.1% resistors and 5k to ground and 11.5k to the output you should get 2.64V out, which should be close enough...

 

[gorgyrip]

Thank you. I will search for them. (i need 2)