LM3677LEX-1.2/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3677LEX-1.2/NOPB 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 2.7 V to 5 V and provides a fixed output voltage of 1.2 V at a maximum current of 600 mA. The device utilizes a 3 MHz switching frequency and employs pulse width modulation control techniques. It is housed in a compact 6-USON package and supports operation within a temperature range of -40 °C to +85 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Miniature form factor suitable for space-constrained designs
• Optimized for ultra-low voltage circuit applications
• High-frequency switching reduces external component size

Voltage Regulators - DC DC Switching Regulators Applications

• Ultra-low voltage portable electronics
• Battery-powered devices requiring efficient step-down conversion
• Space-constrained embedded systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'LEX' against official Texas Instruments documentation to confirm package type and pinout compatibility. Ensure the fixed 1.2 V output aligns with system requirements. Confirm RoHS compliance status through the manufacturer's datasheet or ordering information before procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.2 V output is required from a single-cell lithium-ion or similar low-voltage source. The 3 MHz frequency allows for smaller inductors compared to lower-frequency alternatives. Verify that the 600 mA load current meets the application needs without exceeding thermal limits in the 6-USON package.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM3677 family of switching regulators. It shares core functionality with variants like LM3677LE-1.8/NOPB but differs in fixed output voltage and potentially package variations. The family targets efficiency in portable applications where board space is limited.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM3677LE-1.2/NOPB may serve as a direct substitute if package and electrical specifications match. Verify pinout compatibility and thermal performance differences between LEX and LE suffixes before substitution.