LM3670MFX-1.6

Voltage Regulators - DC DC Switching Regulators Overview

The LM3670MFX-1.6 is a miniature step-down DC-DC converter manufactured by Texas Instruments, designed for ultra-low voltage circuits. It operates with an input voltage range of 2.5 V to 5.5 V and provides a fixed output voltage of 1.6 V. The device delivers up to 350 mA of output current and features a 1 MHz switching frequency. It utilizes a SOT-23-5 package and supports automatic PFM/PWM mode switching to optimize efficiency across load conditions.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Miniature step-down topology optimized for space-constrained designs
• Automatic transition between pulse frequency modulation and pulse width modulation modes
• Voltage-mode control architecture for stable regulation

Voltage Regulators - DC DC Switching Regulators Applications

• Ultra-low voltage circuit power supplies
• Portable electronic devices requiring compact power management
• Battery-powered systems needing efficient step-down conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'MFX' indicates the tape-and-reel packaging format as documented in official Texas Instruments ordering information. Confirm that the '1.6' designation corresponds strictly to the fixed 1.6 V output variant. Ensure compliance with RoHS requirements by checking for the '/NOPB' suffix if lead-free components are mandated for your assembly process. Cross-reference the manufacturer part number against the latest datasheet revision to confirm pinout and electrical specifications remain unchanged.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.6 V output is required from a single-cell lithium-ion or similar battery source within the 2.5 V to 5.5 V input range. The 350 mA current capability suits low-power applications where size is critical due to the SOT-23-5 footprint. Consider the automatic PFM/PWM switching feature for applications demanding high efficiency at light loads without external configuration.

Voltage Regulators - DC DC Switching Regulators Part Context

The LM3670 series comprises miniature step-down DC-DC converters intended for ultra-low voltage applications. This family includes variants with fixed output voltages such as 1.2 V, 1.8 V, and adjustable versions. The LM3670MFX-1.6 specifically addresses the need for regulated 1.6 V rails in portable electronics, sharing core architectural features like voltage-mode control and compact packaging with its siblings.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed substitute part numbers for the LM3670MFX-1.6 are not available in the provided documentation. Verify compatibility with alternative regulators by matching input voltage ranges, output current capabilities, and package dimensions.