TPS7148QP

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

The TPS7148QP is a low-dropout (LDO) linear voltage regulator manufactured by Texas Instruments. It provides a fixed output voltage of 4.85V with a maximum continuous output current of 500mA. The device is housed in an 8-pin PDIP package and is designed for operation within an extended temperature range, typically up to +85°C or +125°C depending on the specific datasheet revision and qualification grade. Key electrical characteristics include a maximum dropout voltage specified at full load and a quiescent current that supports efficient power management in battery-operated applications.

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

• Fixed output voltage regulation for stable power supply rails
• High output current capability suitable for moderate load demands
• Low dropout operation allows for minimal voltage difference between input and output
• Integrated protection features including thermal shutdown and current limiting

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

• Battery-powered portable electronic devices requiring stable voltage regulation
• Embedded systems needing a clean 4.85V supply rail
• Industrial control modules operating in extended temperature environments
• Communication equipment requiring low-noise linear regulation

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

Verify the exact suffix and package variant when ordering, as TPS7148QP denotes the PDIP package while other suffixes indicate SOIC or tape-and-reel options. Confirm the specific temperature grade and datasheet revision required for your application, as performance parameters may vary slightly between revisions. Ensure compatibility with your PCB footprint for the 8-PDIP package. Cross-reference with authorized distributors to confirm availability and authenticity of the Texas Instruments component.

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

Select the TPS7148QP when a fixed 4.85V output is required with up to 500mA load capacity. Consider this part for applications where low noise and high PSRR are critical compared to switching regulators. Evaluate the input voltage range to ensure it remains above the minimum dropout requirement plus the 4.85V output. Compare quiescent current specifications against system power budget constraints. Verify that the thermal dissipation capabilities of the PDIP package are sufficient for the expected ambient temperature and load conditions.

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

The TPS7148 belongs to Texas Instruments' TPS71xx series of low-dropout voltage regulators. This family is characterized by its ability to maintain regulation with minimal input-to-output voltage differential. The TPS7148 specifically offers a fixed 4.85V output, distinguishing it from adjustable or other fixed-voltage variants in the series. It is part of TI's broader portfolio of analog power management solutions designed for reliability and efficiency in various industrial and consumer applications.

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

Direct replacements may include other TPS71xx series parts with compatible output voltages and current ratings, such as TPS7133Q or TPS7101Q, provided the output voltage matches the system requirement. Check pin-out compatibility and package dimensions before substituting. Ensure that any alternative part meets the same thermal and electrical specifications for your specific application environment.