LM2852XMXA-1.2/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2852XMXA-1.2/NOPB is a synchronous step-down DC/DC converter from Texas Instruments, operating within an input voltage range of 2.85V to 5.5V. It delivers a fixed output voltage of 1.2V with a maximum continuous load current of 2A. The device supports adjustable switching frequencies of 500kHz and 1500kHz, enabling optimization for efficiency or component size. Packaged in a 14-pin HTSSOP with an exposed pad, it operates across a junction temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification utilizing internal high-side and low-side power switches to maximize conversion efficiency.
• Configurable switching frequency selection between 500kHz and 1500kHz to balance transient response requirements against passive component footprint.
• Built-in soft-start circuitry limits inrush current during startup to prevent input voltage droop.
• Comprehensive protection mechanisms including thermal shutdown and cycle-by-cycle current limiting.

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded processors and field-programmable gate arrays
• Battery-powered portable electronic devices requiring efficient voltage translation
• Industrial control systems and instrumentation power distribution networks

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix configuration against the manufacturer's official datasheet to ensure compatibility with design requirements. Confirm that the package marking and pinout align with the intended PCB layout. Cross-reference the RoHS compliance status and environmental declarations with current production documentation to meet regulatory standards.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is required for stepping down 3.3V or 5V rails to low-voltage logic levels. The choice depends on the need for integrated power switches rather than external MOSFETs. Evaluate the trade-off between the 500kHz and 1500kHz modes based on available board space for inductors and capacitors.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2852 family of simple switcher regulators designed for cost-sensitive and space-constrained applications. It shares architectural similarities with other members like the LM2852Y series but differs in specific electrical characteristics and packaging options. The product line targets general-purpose power management needs in consumer and industrial electronics.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2852XMXA-1.2/NOPB serves as the lead-free compliant replacement for the discontinued LM2852XMXA-1.2. Verify pin-to-pin compatibility if substituting older non-NOPB variants. Ensure thermal performance matches the original design intent when transitioning between package revisions.

Voltage Regulators - DC DC Switching Regulators FAQ

How is the switching frequency configured?

The switching frequency can be selected between 500kHz and 1500kHz using an external resistor connected to the RT/CLK pin.

What is the purpose of the exposed pad?

The exposed pad on the bottom of the HTSSOP package provides a thermal path to dissipate heat and must be soldered to the PCB ground plane for optimal thermal performance.