LMC7660IM

Voltage Regulators - DC DC Switching Regulators Overview

The LMC7660IM/NOPB is a switched capacitor voltage converter manufactured by Texas Instruments, housed in an SOIC-8 surface-mount package. It operates as a charge pump topology with a fixed switching frequency of 10 kHz. The device accepts an input voltage range from 1.5 V to 10 V and delivers a single output capable of sourcing up to 20 mA. The output voltage is adjustable between -10 V and -1.5 V. Quiescent current consumption is specified at 120 µA. The component supports a shutdown function and functions within an operating temperature range of -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Provides negative voltage generation capability through switched capacitor charge pump technology
• Integrates a shutdown control feature for power management optimization
• Operates on low-voltage single-supply inputs starting at 1.5 V

Voltage Regulators - DC DC Switching Regulators Applications

• Generating negative supply rails for operational amplifiers
• Powering RS-232 interface circuits requiring dual polarity voltages
• Biasing analog signal processing components in portable devices

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix against official documentation to confirm package type and environmental compliance. Ensure the ordering part number matches the required thermal grade and pin configuration. Cross-reference the manufacturer's latest datasheet to validate active status and any recent design changes before finalizing procurement specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution for generating negative voltages from a positive source is required without using inductors. Consider the 20 mA output limit and 120 µA quiescent current when evaluating efficiency requirements. Verify that the SOIC-8 package fits the available PCB footprint and that the 10 kHz switching frequency does not interfere with sensitive analog circuitry.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LMC7660 series of CMOS voltage converters. It serves as a modern replacement for older bipolar charge pump designs, offering lower power consumption and compatibility with standard CMOS logic levels. The family focuses on simple, cost-effective voltage inversion for battery-powered applications.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The TL7660 series offers similar functionality but may differ in static current and operating temperature ranges. Verify pinout compatibility and electrical specifications against the original design requirements before substituting.