This work presents an application specific integrated circuit used for electrical vagus nerve stimulation. Fabricated in a 180 nm Bipolar-CMOS-DMOS process, this circuit can deliver accurate stimulation current while having up to 15 V tolerance, immune to tissue impedance variation. The design is tested with a commercial-grade platinum helical electrode submerged in phosphate-buffered saline and shows a maximum current of 7 mA and a low standby power of 9.63 µW. The low-power, small area, high output current resolution, and process’s compatibility with direct processor integration all makes this design a promising candidate for a single-chip VNS system.