Texas Instruments TL7660 CMOS Voltage Converter TL7660IDGKR

The TL7660IDGKR is a CMOS switched-capacitor voltage converter designed for supply-voltage conversions from positive to negative. It operates within a voltage range of 1.5 V to 10 V, providing a negative output voltage from -1.5 V to -10 V. The device can also function as a voltage doubler, generating output voltages up to 18.6 V with a 10 V input. It requires only two external capacitors for operation and does not need external diodes, ensuring simplicity in design. The TL7660IDGKR features high efficiency, with a typical open-circuit voltage conversion efficiency of 99.9% and a power efficiency of 98%. It operates over a temperature range of -40¬8C to 125¬8C, making it suitable for various applications, including data acquisition systems and portable electronics. The device includes built-in protection against latch-up and has a nominal oscillator frequency of 10 kHz, which can be adjusted with external components. Engineers considering this product will find it beneficial for applications requiring reliable negative voltage supplies with minimal external component requirements.