LM26420XMHX/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM26420XMHX/NOPB is a synchronous step-down DC-DC converter featuring dual independent outputs. It operates with an input voltage range of 3V to 5.5V and provides adjustable output voltages from 0.8V to 4.5V per channel. Each regulator supports up to 2A of continuous output current, delivering a combined total of 4A. The device utilizes a fixed 2.2MHz switching frequency to minimize external component size. It is housed in a 20-pin HTSSOP package with an exposed pad for thermal management.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Dual independent synchronous buck regulators providing separate power rails
• Integrated high-side and low-side MOSFETs for efficient power conversion
• Fixed high-frequency operation reduces passive component footprint
• Thermal shutdown and current limit protection for system reliability

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems requiring multiple voltage domains
• ADAS sensor power distribution networks
• Industrial control boards with mixed logic and analog supplies
• Portable electronic devices needing compact dual-rail regulation

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm pinout compatibility and thermal characteristics. Ensure the ordering part number matches the required package type and tape-and-reel specifications. Cross-reference the manufacturer's latest datasheet revision to validate electrical parameters before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when dual isolated or non-isolated low-voltage rails are required from a single 3V to 5.5V source. The 2.2MHz frequency allows for smaller inductors compared to lower-frequency alternatives. Evaluate thermal performance based on the expected load current and PCB copper area, as the exposed pad is critical for heat dissipation in high-current applications.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM26420 family of dual synchronous buck converters designed for automotive and industrial environments. It complements single-output regulators by providing two independent channels in a compact form factor. The series is characterized by high efficiency and robust protection features suitable for demanding power management applications.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Check for LM26420 variants with different package options such as WQFN if board space constraints differ. Verify that substitute parts maintain the same 2A per channel rating and 2.2MHz switching frequency to ensure compatibility with existing passive components.