LMC7660IN/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LMC7660IN/NOPB is a switched capacitor voltage converter manufactured by Texas Instruments, designed to generate negative voltages from positive supply rails. It operates within an input voltage range of 1.5 V to 10 V and delivers an output current of up to 20 mA. The device functions as a charge pump with a switching frequency of 10 kHz, producing regulated outputs between -1.5 V and -10 V. It features a shutdown capability and draws a typical operating supply current of 120 µA. The component is housed in an 8-pin PDIP package and supports through-hole mounting, ensuring reliable performance across an industrial temperature range of -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Generates negative voltage rails from positive inputs using charge pump topology
• Includes shutdown control for power management optimization
• Operates with low quiescent current consumption
• Supports wide input voltage ranges for flexible system integration

Voltage Regulators - DC DC Switching Regulators Applications

• Biasing operational amplifiers requiring dual polarity supplies
• Powering analog-to-digital converters needing negative reference voltages
• Providing gate drive voltages for N-channel MOSFETs
• Supplying negative bias for sensor interfaces

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number including the suffix to ensure correct packaging and environmental compliance. Confirm that the PDIP-8 package aligns with your PCB footprint requirements. Check datasheet specifications for external capacitor values necessary to achieve rated performance at specific load conditions. Ensure thermal constraints are met within the specified operating temperature range during final assembly validation.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution for generating negative voltage is required without inductors. Consider the 20 mA output limit against peak load demands. Evaluate the 10 kHz switching frequency for potential noise sensitivity in adjacent analog circuits. Compare input voltage headroom requirements against the minimum 1.5 V threshold to ensure stable regulation under all operating conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LMC7660 series of switched capacitor converters. It serves as a non-inductive alternative to traditional inductor-based DC-DC converters for low-power applications. The NOPB suffix indicates lead-free construction compliant with RoHS standards. It is part of Texas Instruments' portfolio of power management integrated circuits focused on efficiency and simplicity in signal chain power delivery.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for direct pin-compatible substitutes within the same family if package availability is constrained. Verify that any replacement maintains the 20 mA output current capability and similar shutdown functionality. Ensure the alternative device supports the required -40°C to +85°C temperature range for industrial compatibility.