LM26400YMHX/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM26400YMHX/NOPB is a dual-output synchronous step-down DC-DC regulator from Texas Instruments, housed in a 16-pin PowerTSSOP package. It features a wide input voltage range of 3V to 20V and delivers up to 2A per channel. The device operates at a fixed switching frequency of 500kHz, with a tolerance range of 390kHz to 650kHz. Output voltages are adjustable from 600mV to 16V. It includes internal compensation, current mode control, and a maximum duty cycle of 96%. The typical quiescent current is 4mA, and it supports an operating temperature range from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Dual independent output channels providing flexible power distribution for multi-rail systems
• Wide input voltage capability supporting direct connection to 3V–20V sources without external level shifting
• Integrated synchronous rectification and internal compensation simplifying external component count and layout

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial equipment requiring isolated or separate logic and analog power rails
• Automotive infotainment and gateway systems needing robust wide-input regulation
• Embedded controllers and communication modules utilizing multiple voltage levels

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix 'YMHX' confirms the specific PowerTSSOP-16 package variant and tape-and-reel packaging configuration. Ensure compatibility with your PCB footprint dimensions and thermal requirements. Confirm that the 500kHz fixed frequency aligns with your EMI constraints and inductor selection. Check for RoHS compliance documentation if required by your manufacturing standards.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when dual isolated outputs are necessary from a single wide-range input source. The 500kHz frequency allows for smaller passive components compared to lower-frequency alternatives. Consider the thermal performance of the PowerTSSOP package for high-load applications. Verify that the 2A per channel rating meets the peak load requirements of both downstream circuits simultaneously.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM26400Y family of dual buck regulators designed for efficiency and compactness. It complements single-channel variants like the LM26400 by offering integrated dual-rail solutions. The device targets applications where board space is limited but multiple voltage domains are required, such as in complex embedded systems.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-compatible substitutes within the same family include LM26400YSDE/NOPB (WSON-16 package). For higher frequency options, consider the LM26420 series, though input/output ranges may differ. Always verify electrical parameters and thermal characteristics before substitution.