LM2735XMF/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2735XMF/NOPB is a space-efficient boost DC-DC regulator from Texas Instruments, housed in a compact SOT-23-5 package. It operates with an input voltage range of 2.7 V to 5.5 V and provides a fixed output voltage of 3 V at a maximum output current of 500 mA. The device features a switching frequency of 1.6 MHz, enabling the use of small external components. It delivers high efficiency up to 90% and maintains operation across an extended temperature range from -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a 1.6 MHz fixed-frequency switching controller for reduced passive component size
• Includes internal power switch and synchronous rectification for high conversion efficiency
• Features adjustable soft-start to limit inrush current during startup
• Provides thermal shutdown protection to safeguard against overheating

Voltage Regulators - DC DC Switching Regulators Applications

• Portable battery-powered devices requiring efficient step-up conversion
• Cellular phones and personal digital assistants (PDAs)
• MP3 players and other multimedia consumer electronics
• Handheld instruments and medical devices

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'XMF' confirms the SOT-23-5 package and 1.6 MHz frequency variant. Ensure the 'NOPB' designation indicates lead-free and RoHS compliance as per manufacturer standards. Confirm that the fixed 3 V output matches the target application requirements, as this parameter is not adjustable. Cross-reference the datasheet revision to ensure compatibility with design-in specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is required for boosting low input voltages to a stable 3 V rail. The 1.6 MHz frequency allows for smaller inductors compared to lower-frequency alternatives. Consider the 500 mA output limit to ensure it meets the load current demands without exceeding thermal limits. Verify that the input voltage source remains within the 2.7 V to 5.5 V operational window for proper regulation.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2735 family of space-efficient boost regulators designed for portable applications. The family includes variants with different frequencies and packages, such as the YMFX and XSD versions. These devices share common architectural features like internal switches and control loops but differ in packaging and switching speed to optimize board space and performance for specific designs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include LM2735YMFX/NOPB for similar functionality with potentially different frequency characteristics, or LM2735XSDX/NOPB if a WSON-6 package is acceptable. Verify pinout compatibility and electrical parameters before substitution. Alternative families may require redesign of the feedback network and inductor selection.