Suggest a regulator which can generate 450V output with 1mA output current from a source with minimum 5V to maximum 12V input.
Regards & Thanks
I cannot get an existing solution but you can work with local ADI support to understand more your application.
You can check reference document in link below to achieve higher boost factor…
have you checked out the LT3751 yet?
Linear Technology - Product Page
Its intended to charge capacitors to large voltages and offers plenty of power as controller. When 450mW is all you…
See LT8304-1 datasheet, page 24, for a verified 4-18Vin to 400Vout circuit. Rfb resistor could be increased proportionally to generate 450Vout.
You are get the LTspice files in LTC website.
About the regulator, please check ADP1612/13. Datasheet and design tools are available in website.
You may also take a look at application note AN-1126.