LM2853MHX-3.0/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2853MHX-3.0/NOPB is a fixed-output synchronous buck converter manufactured by Texas Instruments, designed for efficient step-down voltage regulation in compact power systems. It operates with an input voltage range of 3 V to 5.5 V and provides a fixed 3.0 V output at up to 3 A load current. The device integrates high-side and low-side MOSFETs within a thermally enhanced HTSSOP-14 package to minimize external component count and PCB footprint. It supports adjustable switching frequencies up to 0.55 MHz, enabling the use of small inductors and capacitors. Key features include integrated soft-start, cycle-by-cycle current limiting, thermal shutdown, and a sleep mode that reduces quiescent current during light loads or standby conditions.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification with internal high-side and low-side MOSFETs for high efficiency
• Adjustable switching frequency up to 0.55 MHz allows optimization for size and performance
• Built-in protection mechanisms including thermal shutdown, cycle-by-cycle current limit, and soft-start
• Low quiescent current operation with sleep mode support for improved battery life in portable applications

Voltage Regulators - DC DC Switching Regulators Applications

• Portable electronics such as smartphones, tablets, and handheld devices requiring efficient power management
• Embedded systems and industrial controllers needing stable 3.0 V rails from higher voltage sources
• Battery-powered equipment where low standby current and high efficiency are critical
• Communication modules and sensor hubs operating within 3 V to 5.5 V input ranges

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the exact part number suffix matches 'MHX-3.0/NOPB' to ensure correct output voltage and packaging. Confirm RoHS compliance status via the manufacturer's official documentation. Check for any recent product change notices affecting pinout, thermal characteristics, or reliability data before finalizing procurement decisions.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.0 V output is required from a 3 V–5.5 V input source with up to 3 A load capability. Consider its synchronous design for higher efficiency compared to non-synchronous alternatives. Evaluate thermal performance based on expected ambient conditions and PCB copper area, as heat dissipation impacts sustained current delivery.

Voltage Regulators - DC DC Switching Regulators Part Context

The LM2853 series belongs to Texas Instruments’ family of synchronous step-down converters optimized for space-constrained, high-efficiency applications. The MHX variant denotes a specific thermal pad-enhanced HTSSOP-14 package suitable for surface-mount assembly. This model provides a fixed 3.0 V output, distinguishing it from adjustable versions within the same series.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes may include other LM2853 variants with different fixed outputs (e.g., LM2853MHX-2.5/NOPB) if voltage compatibility allows. Cross-reference with LM2854 or LM5176 series parts only if input/output specifications and pinouts are verified compatible through official datasheets.