LM2661M/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2661M/NOPB is a switched capacitor voltage converter manufactured by Texas Instruments. It functions as a negative voltage inverter or positive voltage doubler, converting input voltages ranging from 1.5 V to 5.5 V into corresponding negative outputs between -1.5 V and -5.5 V. The device delivers an output current of 200 mA with typical conversion efficiency exceeding 86% at 100 mA load. It operates within a temperature range of -40°C to +85°C and utilizes a narrow SOIC-8 package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Provides negative voltage inversion or positive voltage doubling capabilities using switched capacitor technology
• Delivers up to 200 mA output current with high conversion efficiency under typical loads
• Supports flexible oscillator frequency selection via external components for noise optimization

Voltage Regulators - DC DC Switching Regulators Applications

• Battery-powered systems requiring negative supply rails
• Communication and network equipment power management
• Computer peripheral circuits needing dual polarity supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the component status before procurement as public sources indicate this specific part number may be obsolete. Confirm availability through authorized distributors or check for valid substitute part numbers such as the LM2660M/NOPB if production units are required. Ensure the ordering suffix matches the required package and temperature grade specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing circuits that require compact negative voltage generation without inductors. Consider the 200 mA current limit and the need for external capacitors for charge pumping. Evaluate the operating temperature range against environmental conditions and verify compatibility with the system's input voltage profile between 1.5 V and 5.5 V.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM266x family of switched capacitor converters from Texas Instruments. These components are designed to replace bulky inductive converters in space-constrained applications. The LM2661 specifically targets applications requiring reliable negative voltage generation from standard single-supply batteries or logic-level inputs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Public data indicates the LM2661M/NOPB is obsolete. The LM2660M/NOPB is listed as a similar available substitute. Verify functional equivalence regarding pinout, electrical parameters, and package dimensions before substitution.