LM2854MH-500/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2854MH-500/NOPB is a synchronous buck regulator from Texas Instruments, housed in an HTSSOP-16 package. It operates with an input voltage range of 2.95 V to 5.5 V and delivers up to 4 A output current. The device supports switching frequencies of 500 kHz or 1 MHz. It provides a fixed output voltage of 5.0 V, adjustable within a range of 800 mV to 5 V. The unit functions within a temperature range of -40 °C to +85 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates high-side and low-side N-channel power MOSFETs for efficient synchronous rectification.
• Features a fixed 500 kHz or selectable 1 MHz switching frequency to optimize external component size.
• Includes internal soft-start circuitry to limit inrush current during startup.
• Provides comprehensive protection against overcurrent, thermal overload, and undervoltage lockout.

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Power supply stages for microprocessors and FPGAs
• Battery-powered portable devices requiring high efficiency

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix configuration to ensure compatibility with required switching frequency settings and pinout arrangements. Confirm that the HTSSOP-16 package dimensions align with the target PCB footprint. Ensure environmental specifications meet the operational temperature requirements of the final assembly. Cross-reference the datasheet revision date to confirm feature consistency.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is needed for converting 3.3 V or 5 V rails to lower voltages at currents up to 4 A. The integrated MOSFETs reduce the need for external drivers. Consider the trade-off between switching frequency and inductor size. Ensure adequate thermal management is planned for the HTSSOP-16 package under maximum load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2854 family of SIMPLE SWITCHER regulators. It shares architectural similarities with the LM2852 and LM2853 but offers higher current capacity. The device is designed as a drop-in replacement for older non-synchronous buck regulators in space-constrained applications requiring improved efficiency.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include the LM2854MHX-500/NOPB for reel packaging variations. For different output voltages within the same family, consider LM2854MH-ADJ/NOPB. Verify pin compatibility before replacing with LM2852 or LM2853 variants, as current ratings differ.