LM3677TL-1.3/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3677TL-1.3/NOPB is a fixed-output step-down DC-DC converter manufactured by National Semiconductor, now part of Texas Instruments. It provides a regulated 1.3V output with a maximum current capacity of 600mA. The device operates within an input voltage range of 2.7V to 5V and utilizes a 5-pin DSBGA package. It supports pulse-width modulation (PWM) and pulse-frequency modulation (PFM) control techniques for efficient power management.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates a synchronous buck converter topology for high efficiency in compact designs.
• Supports automatic transition between PWM and PFM modes to optimize light-load performance.
• Features a miniature footprint suitable for space-constrained portable electronics.

Voltage Regulators - DC DC Switching Regulators Applications

• Portable consumer electronics requiring ultra-low voltage regulation
• Battery-powered devices utilizing single-cell lithium-ion or lithium-polymer sources
• Embedded systems needing stable low-voltage rails for logic circuits

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer designation as National Semiconductor or Texas Instruments on the component marking. Confirm the suffix /NOPB indicates lead-free compliance. Ensure the package type matches the required 5-DSBGA form factor for PCB layout compatibility. Cross-reference the specific output voltage setting of 1.3V against system requirements.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.3V output is required from a 2.7V to 5V input source. It is appropriate for applications prioritizing small board area due to its DSBGA packaging. Consider the 600mA current limit for load requirements. Evaluate the need for PFM mode operation if extended battery life at light loads is critical compared to standard PWM operation.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM3677 family of miniature step-down converters designed for ultra-low voltage applications. The series includes various fixed output voltage options and package variants such as USON and LLP. The TL suffix typically denotes the DSBGA package configuration within this product line.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM3677TL-1.2/NOPB: Provides 1.2V output instead of 1.3V; otherwise identical electrical characteristics and package.

Voltage Regulators - DC DC Switching Regulators FAQ

What control modes does the LM3677TL-1.3/NOPB support?

It supports both pulse-width modulation (PWM) and pulse-frequency modulation (PFM) control techniques.

What is the maximum input voltage for this converter?

The maximum input voltage is 5V.