LM3370TL-3607/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM3370TL-3607/NOPB is a dual synchronous step-down DC-DC converter featuring dynamic voltage scaling. It operates with an input voltage range of 2.7V to 5.5V and provides two fixed output voltages: 1.5V and 1.9V. Each channel delivers up to 600mA of output current. The device utilizes a 2MHz switching frequency for efficient power conversion. Packaged in a 20-pin USMD format, it is designed for applications requiring ultra-low voltage circuits powered by single Li-Ion batteries or input rails.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Dual synchronous buck topology for independent low-voltage regulation
• Integrated dynamic voltage scaling function for enhanced efficiency
• Optimized for single-cell lithium-ion battery operation

Voltage Regulators - DC DC Switching Regulators Applications

• Ultra-low voltage circuit powering from single Li-Ion batteries
• Portable electronic devices requiring multiple regulated rails
• Input rail distribution systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the manufacturer origin as National Semiconductor was acquired by Texas Instruments; ensure the NOPB suffix indicates lead-free compliance. Confirm the specific -3607 variant matches the required 1.5V and 1.9V fixed outputs. Check package integrity for the 20-USMD form factor. Validate active status through authorized distributors to avoid obsolete stock.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when dual isolated low-voltage outputs are needed from a single high-side source. The 2MHz frequency allows for smaller passive components compared to lower-frequency alternatives. Ensure the load current does not exceed 600mA per channel. Consider thermal management requirements given the compact USMD package size and dual-channel operation under full load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM3370 family of dual synchronous step-down converters. It shares functional similarities with other models like the LM3370SD series but differs in specific output voltage configurations and packaging. The device represents a transition period product between National Semiconductor and Texas Instruments power management portfolios.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other LM3370 variants such as LM3370SD-3013 or LM3370SD-3021, though output voltages must be verified. Cross-reference with TI's current portfolio for equivalent dual buck converters if sourcing from new manufacturers.