LM3674MFX-1.5/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3674MFX-1.5/NOPB is a fixed-output step-down DC-DC converter manufactured by Texas Instruments, featuring a 1.5 V output and 600 mA load current capability. It operates within an input voltage range of 2.7 V to 5.5 V at a typical switching frequency of 2 MHz. The device utilizes internal synchronous rectification for high efficiency and is housed in a compact SOT-23-5 package. It supports operation temperatures from -30°C to +85°C and offers ultra-low shutdown current.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Internal synchronous rectification ensures high conversion efficiency during PWM mode operation.
• Ultra-low shutdown current reduces battery consumption when the device is disabled.
• High switching frequency allows for the use of minimal external surface-mount components.

Voltage Regulators - DC DC Switching Regulators Applications

• Powering low-voltage circuits from single Li-Ion cell batteries
• Mobile phone power management systems
• Portable electronic devices requiring efficient step-down conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix configuration against the manufacturer's official documentation to ensure compatibility with required output voltage and packaging options. Confirm RoHS compliance status and lead times through authorized distributors prior to procurement. Ensure the selected variant matches the intended thermal and electrical requirements for the target application environment.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for applications requiring a fixed 1.5 V output from a 2.7 V to 5.5 V input source. Consider the SOT-23-5 package size constraints and the 600 mA continuous current limit. Evaluate the 2 MHz switching frequency against EMI requirements and inductor selection criteria. Verify that the operating temperature range meets the system's environmental specifications.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM3674 series of step-down DC-DC converters designed for portable electronics. It is optimized for powering low-voltage circuits from single-cell lithium-ion batteries. The series provides various fixed output voltage options and adjustable versions to suit different system requirements while maintaining high efficiency in a small footprint.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM3674MFX-1.2/NOPB: Fixed 1.2 V output version with identical package and electrical characteristics. LM3674MFX-1.8/NOPB: Fixed 1.8 V output version with identical package and electrical characteristics. LM3671MFX-2.5/NOPB: Similar buck converter with 2.6 MHz switching frequency and -40°C minimum operating temperature.