LM3310SQ

Voltage Regulators - DC DC Switching Regulators Overview

The LM3310SQ is a step-up PWM DC/DC converter featuring an integrated operational amplifier and gate pulse modulation switch. It supports a 2A internal switch with a resistance of 0.18Ω. The device accepts an input voltage range of 2.5V to 7V and provides a positive adjustable output up to 20V. Switching frequencies are selectable at 660kHz or 1.28MHz. It includes soft-start functionality and operates within a junction temperature range of -40°C to 125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates an operational amplifier and gate pulse modulation switch for efficient boost conversion
• Supports high current switching capability with low on-resistance internal switch
• Offers selectable switching frequencies to optimize external component size and efficiency
• Includes soft-start feature to limit inrush current during startup

Voltage Regulators - DC DC Switching Regulators Applications

• Battery-powered portable devices requiring voltage boosting
• Systems needing adjustable output voltages from low input sources
• Applications requiring high efficiency in compact form factors

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix (e.g., SQ vs SQ/NOPB) against the manufacturer's datasheet to confirm lead-free status and package details. Ensure the ordering part number matches the required switching frequency configuration and thermal specifications. Cross-reference the manufacturer's official documentation for any recent revisions or pinout changes before finalizing procurement.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when an integrated solution combining error amplification and power switching is required for boost applications. Consider the 0.18Ω internal switch resistance for efficiency calculations at high load currents. Verify that the selected switching frequency aligns with available inductor and capacitor values. Ensure the input voltage range covers the minimum battery or supply voltage under all operating conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the National Semiconductor (now Texas Instruments) family of switching regulators. It is designed as a complete boost converter solution, reducing the need for external control circuitry. The integration of the op-amp and switch simplifies design complexity compared to discrete solutions, targeting space-constrained electronic designs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The LM3310SQ/NOPB is the lead-free version of the LM3310SQ. Verify compatibility if environmental compliance is required. No other direct public substitutes are confirmed in the provided data.