UCC386PWTR

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The UCC386PWTR is a fixed positive linear voltage regulator from the Unitrode UCC386/7/8 series. It provides a fixed output of 3.22V with a maximum load current of 200mA. The device features a low dropout voltage of 0.2V at full load and utilizes BICMOS technology in an 8-pin TSSOP package. It operates within a temperature range of 0°C to 70°C and includes internal current limit and thermal limit protection features.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Precision positive linear regulation with guaranteed reverse input/output voltage isolation
• Low dropout performance of 0.2V at 200mA load
• Integrated current limit and thermal limit protection

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Battery-powered equipment requiring efficient linear regulation
• Post-regulation stages for switching power supplies
• Low-noise analog circuit power supplies

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific output voltage variant, as the UCC386/7/8 series offers multiple fixed options (e.g., 3.22V, 5V). Confirm the suffix 'PWTR' indicates tape-and-reel packaging. Ensure the manufacturer source is identified correctly, as Unitrode assets are now part of Texas Instruments.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a fixed low-voltage output is required with minimal quiescent current. The 0.2V dropout allows operation close to the output voltage, improving efficiency compared to standard LDOs. Verify that the 200mA current rating meets the load requirements and that the TSSOP-8 package fits the PCB layout constraints.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This component belongs to the UCC386/7/8 family of low-dropout linear regulators originally developed by Unitrode Corporation. These devices are characterized by their precision reference and low leakage current. The family includes adjustable versions and various fixed output voltages, designed for applications where noise immunity and simple implementation are priorities.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Check for direct equivalents in the UC386 or LM317 families if pin compatibility is required. Verify that replacement parts support the same 200mA output current and 0.2V dropout specification. Ensure the replacement package matches the TSSOP-8 footprint.