TC7660S Charge Pump IC DIP8 (1 piece)

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This is a charge pump IC. It is used in several GuitarPCB projects to allow a PNP Germanium fuzz circuit to operate daisy-chained with other standard negative-ground effects (Pump'd Up Rangemaster Plus, Pump'd Up Fuzz Face, Pump'd Up Tone Bender, and the Fuzzy Bee). It can also be used in a circuit to provide both +9V and -9V to allow an 18V circuit to be created from a 9V source, which is what the original Klon® circuit does.

The 7660 (no S at the end) was problematic because it has an internal oscillator which is in the audible range, and causes guitar effects to have whine noise. The MAX1044 and 7660S solved this issue by adding an oscillator boost that eliminates this noise. Unfortunately, the MAX1044 has been less than reliable for some so we shy away from those. These 7660S charge pumps are fantastic and seem to be highly reliable. These are guaranteed authentic. Brand will vary from time to time but will be either MicroChip or TelCom (both datsheets available below).

PDF  Microchip TC7660S IC
Download Datasheet PDF


PDF  TelCom TC7660S IC
Download Datasheet PDF


Warranty Information

For all items except for pedal kits, we will gladly accept returns for any new/unused items within 30 days of purchase. We will give you a full refund, minus the cost of shipping, via in-store credit or your original payment method. If your return is due to an error made by us, we will even pay for return shipping!