Part Number: TL7660
Function: CMOS Voltage Converter
Package: DIP, SOIC 8 Pin Type
Manufacturer: Texas Instruments
The TL7660 is a CMOS switched-capacitor voltage converter that perform supply-voltage conversions from positive to negative. With only two noncritical external capacitors needed for the charge pump and charge reservoir functions, an input voltage within the range from 1.5 V to 10 V is converted to a complementary negative output voltage of –1.5 V to –10 V. The device can also be connected as a voltage doubler to generate output voltages up to 18.6 V with a 10-V input.
The basic building blocks of the IC include a linear regulator, an RC oscillator, a voltage-level translator, and four power MOS switches. To ensure latch-up-free operation, the circuitry automatically senses the most negative voltage in the device and ensures that the N-channel switch source-substrate junctions are not forward biased.
The oscillator frequency runs at a nominal 10 kHz (for V CC = 5 V), but that frequency can be decreased by adding an external capacitor to the oscillator (OSC) terminal or increased by overdriving OSC with an external clock.
1. Wide Operating Range : 1.5 V to 10 V
2. Requires Only Two External (Noncritical) Capacitors
3. No External Diode Over Full Temperature and Voltage Range
4. Typical Open-Circuit Voltage Conversion Efficiency : 99.9%
5. Typical Power Efficiency : 98%
6. Full Testing at 3 V
Top-Side Marking : TL7660CP, 7660C, TL7660IP, 7660I
Other data sheets are available within the file: TL7660CD, TL7660CDG4, TL7660CDGKR, TL7660CDGKT
TL7660 Datasheet PDF Download