LM2830ZMF/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2830ZMF/NOPB is a fixed-frequency current-mode step-down DC-DC converter manufactured by Texas Instruments, originally part of the National Semiconductor portfolio. It operates with an input voltage range of 3 V to 5.5 V and delivers up to 1 A of output current. The device features a high switching frequency of 3 MHz, enabling the use of small external inductors and capacitors. It provides an adjustable output voltage from 600 mV to 4.5 V. The component is housed in a compact SOT-23-5 package and supports operation over an extended temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a power switch and control circuitry for a complete buck converter solution
• Utilizes fixed-frequency current-mode architecture for stable loop performance
• Includes internal soft-start to limit inrush current during startup
• Features thermal shutdown protection to safeguard against overheating

Voltage Regulators - DC DC Switching Regulators Applications

• Portable battery-powered equipment requiring efficient voltage regulation
• Point-of-load conversion for digital signal processors and microcontrollers
• General-purpose step-down power supplies in space-constrained designs

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix configuration as datasheets may list variations. Confirm RoHS compliance status directly with the manufacturer or authorized distributors, as historical production data indicates potential discrepancies in regulatory markings. Ensure the source document explicitly confirms the NOPB designation for lead-free assembly compatibility before finalizing procurement specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact footprint is critical due to its SOT-23-5 packaging. The 3 MHz switching frequency allows for smaller passive components compared to lower-frequency alternatives. Ensure the application requires an output voltage within the 600 mV to 4.5 V range and does not exceed the 1 A continuous current limit. Verify that the input supply remains within the 3 V to 5.5 V operational window for proper regulation.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM2830 family of single-output synchronous buck converters. It shares architectural similarities with the LM2831 but differs in maximum output current and switching frequency specifications. The component is classified under Power Management ICs (PMIC) and serves as a direct replacement for older National Semiconductor parts in legacy designs transitioning to Texas Instruments manufacturing lines.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult official Texas Instruments cross-reference guides for compatible alternatives.