LM2840YMK-ADJL/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2840YMK-ADJL/NOPB is a step-down DC/DC regulator from the LM284x series by Texas Instruments. It operates with an input voltage range of 4.5 V to 42 V and provides an adjustable output voltage between 0.765 V and 34 V. The device supports a maximum output current of 300 mA and features a fixed switching frequency of 1.25 MHz. Packaged in a thin TSOT (SOT-23-THIN) 6-pin surface-mount format, it functions as a buck converter suitable for space-constrained designs.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a power switch and control circuitry into a compact thin SOT package
• Supports wide input voltage ranges up to 42 V for flexible system integration
• Features adjustable output voltage capability via external resistor network

Voltage Regulators - DC DC Switching Regulators Applications

• Portable battery-powered equipment requiring efficient voltage regulation
• Industrial systems utilizing 24 V or 48 V bus architectures
• Embedded controllers needing isolated or non-isolated step-down conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix ADJL against the manufacturer datasheet to confirm pinout and electrical characteristics match your design requirements. Ensure the TSOT-6 package dimensions align with your PCB footprint constraints. Cross-reference the revision level to guarantee compatibility with existing bill of materials and assembly processes.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a 300 mA buck converter is required within a minimal footprint. The 1.25 MHz switching frequency allows for smaller passive components compared to lower-frequency alternatives. Confirm that the thermal performance of the thin SOT package meets the junction temperature limits under expected load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM284x family of SIMPLE SWITCHER regulators, which includes variants with 100 mA, 300 mA, and 600 mA output capabilities. The LM2840 specifically denotes the 300 mA version. These devices are designed to replace linear regulators in high-efficiency applications where heat dissipation is a concern.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other LM284x family members such as LM2840XMK-ADJL/NOPB (same specs, different reel/packaging) or LM2842YMK-ADJL/NOPB if higher current capacity is acceptable. Verify pin compatibility before substitution.