LM2585T-3.3/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM2585T-3.3/NOPB is a Texas Instruments SIMPLE SWITCHER step-up switching regulator designed for high-efficiency power conversion. It operates with an input voltage range of 4 V to 40 V, delivering a fixed 3.3 V output at up to 3 A load current. The device features a typical efficiency of 93% and a switching frequency of 115 kHz. It utilizes a TO-220 package with five pins, supporting through-hole mounting. The unit functions within a temperature range of -40°C to +125°C, ensuring reliable performance in demanding environments.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated flyback topology supports both step-up and isolated applications
• Fixed 3.3 V output eliminates external feedback resistor requirements
• Robust thermal design accommodates high current loads in TO-220 packaging

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial power supply systems requiring wide input ranges
• Battery-powered devices needing voltage boosting from low cell voltages
• Telecommunications equipment utilizing standard 3.3 V logic levels

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix NOPB confirms lead-free and RoHS compliance status. Ensure the T suffix corresponds to the TO-220 through-hole package variant rather than surface-mount options. Confirm the 3.3 designation matches the required fixed output voltage before procurement. Cross-reference the manufacturer part number against official TI databases to avoid counterfeit components.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 3.3 V output is required without external programming resistors. Choose the TO-220 package for applications prioritizing thermal dissipation over board space constraints. Consider the 115 kHz switching frequency for balancing electromagnetic interference and passive component size. Evaluate the 40 V maximum input limit against source voltage peaks.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2585 series of SIMPLE SWITCHER regulators, known for integrated power switches and compact designs. The LM2585 family offers various output voltage options and package types, including adjustable and fixed variants. The LM2585T-3.3/NOPB specifically targets applications requiring robust, high-current step-up conversion in industrial settings.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM2585T-ADJ/NOPB provides adjustable output instead of fixed 3.3 V. LM2585S-3.3/NOPB offers the same electrical specifications but in a surface-mount TO-263 package.