LM2833ZMY/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2833ZMY/NOPB is a step-down DC-DC switching regulator manufactured by National Semiconductor, now part of Texas Instruments. It operates with an internal oscillator frequency selectable between 1.5 MHz and 3 MHz to optimize efficiency and external component size. The device integrates a 3.0 A switch capable of handling high current loads for portable applications. It features adjustable output voltage via external resistors, ensuring flexibility in power supply design. The unit includes comprehensive protection mechanisms such as thermal shutdown and current limiting to safeguard against overload conditions.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a high-current 3.0 A power switch for efficient power conversion
• Features selectable switching frequencies of 1.5 MHz or 3 MHz
• Includes built-in thermal shutdown and cycle-by-cycle current limiting
• Supports adjustable output voltage through external resistor networks

Voltage Regulators - DC DC Switching Regulators Applications

• Battery-powered portable electronic devices
• General-purpose step-down power supplies
• Embedded systems requiring regulated lower voltages
• Industrial control modules needing compact regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix ZMY corresponds to the required package type and tape/reel configuration before ordering. Confirm that the NOPB designation indicates lead-free compliance and RoHS standards. Ensure compatibility with the intended switching frequency setting and output voltage requirements defined by the external feedback network components.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution with high current capability is required. The choice between 1.5 MHz and 3 MHz depends on the trade-off between inductor size and switching losses. Consider the input voltage range and desired output stability. Evaluate thermal performance under maximum load conditions to ensure adequate heat dissipation within the application environment.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2833 family of step-down regulators designed for efficiency and small footprint. It replaces older linear regulators in battery-operated systems where power conservation is critical. The integration of the power switch reduces the need for external discrete components, simplifying the overall circuit design and reducing board space requirements significantly.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2833XMY/NOPB

Voltage Regulators - DC DC Switching Regulators FAQ

What are the available switching frequencies?

The device supports two internal oscillator frequencies: 1.5 MHz and 3 MHz.

Does the device include over-temperature protection?

Yes, it features thermal shutdown to protect the device from overheating.