Integrated charge pumps for gate pumping or flash programing

[electronrancher]

integrated charge pump

I have read a great deal of articles, and evaluated several varieties of charge pump cell in both CMOS & bipolar - has anyone else studied or built charge pumps? I'd like to open a discussion.

I'm talking mostly about integrated charge pumps, suitable for 100-200uA of high voltage generated inside an IC. The applications are:

-Hot swap and super low dropout LDO - pump the gate up to high voltage in order to decrease on-resistance to very low values
-EEPROM and Flash memory - generate an on-board programming voltage of around 12v, using 1.8, 3.3v or 5v supply.

So let me know if any of you have experience with these types of blocks - maybe we can trade advantages/disadvantages. Also, if you use these application IC's and you have any info on the charge pumps you have used, I am interested as well. Thanks, and best regards..
-er

 

[rfsystem]

Re: integrated charge pump

If your high voltage interest is driving a varator at high voltage forget about an integrated
chargepump doing this. Use a regular 3-5V IC chargepump, or make your own, and drive an active
Opamp which high voltage output stage is either an drain-extension NMOS or an external NPN. The
feedback resistor/cap could be external.

 

[electronrancher]

integrated charge pump

nope, no interest in wireless. integrated charge pumps for gate pumping or flash programming supply.