CLM7660SCPAZ is an overvoltage converter that is a single-chip CMOS level conversion integrated circuit. Compared with other similar devices, it has significant performance advantages and extends the working power supply voltage range to 12V, with a lower power supply current. In order to use smaller capacitors to reduce output impedance, the frequency Boost pin is introduced. The CLM7660SCPAZ can convert a positive input voltage ranging from 1.5V to 12V into a negative output voltage ranging from -1.5V to -12V. Only two non critical external capacitors are used for charge pump and charge energy storage functions. CLM7660SCPAZ can be used as a voltage multiplier, and a 12V input voltage can generate an output voltage of up to 22.8V. This chip can also be used as a voltage multiplier or divider. The chip includes a series DC stabilized power supply, RC oscillator, voltage level converter, and four output power MOS switches. The oscillator oscillates at a standard frequency of 10kHz when unloaded, with an input power supply voltage of 5.0V. The frequency can be reduced by adding an external capacitor at the "OSC" end, or by overdriving the oscillator with an external clock. In order to avoid using internal series regulators and improve low-voltage (LV) operation, the "LV" end can be connected to ground. Under medium to high voltage (3.5V to 12V), the LV pins remain floating to prevent device latch. In some applications, an external Schottky diode needs to be connected from VOUT to CAP to ensure latch free operation.

Ensure a lower maximum power supply current within the allowable temperature range

Wide working voltage range: 1.5V to 12V

Tested under 3V conditions, 100% usable

Boost pin (pin 1) is used to increase the switching frequency

The minimum power efficiency is 96%

The minimum open circuit voltage conversion efficiency has been increased to 99%

Improving SCR latch protection

Convert the+5V logic power supply to a ± 5V power supply

Voltage multiplier VOUT=(-) n VIN

Easy to use, only two external non critical passive components are required

Convert+5V power supply to ± 5V power supply

Voltage multiplier VOUT=± n VIN

Provide negative power supply for data collection systems and instruments

RS232 power supply

Voltage divider, VOUT=± VS