TPS76301DBVR

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

The TPS76301DBVR is a low-dropout linear voltage regulator from the Texas Instruments TPS763 family, housed in a 5-pin SOT-23 package. It provides an adjustable output voltage ranging from 1.5V to 6.5V with a maximum load current of 150mA. The device operates within an input voltage range of 2.7V to 10V and supports a junction temperature range of -40°C to 125°C. Key electrical characteristics include a typical quiescent current of 85µA at light loads and up to 140µA at full load, alongside thermal shutdown and overcurrent protection features.

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

• Features an enable pin for active sleep mode control, reducing standby current significantly when disabled.
• Incorporates internal soft-start circuitry to limit inrush current during startup, allowing for smaller input capacitance requirements.
• Includes active over-shoot pulldown protection on newer silicon revisions to enhance output stability.
• Provides comprehensive protection against thermal overload and excessive output current.

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

• Smoke and heat detectors
• Thermostats
• Motion detectors (PIR, uWave)
• Cordless power tools
• Appliance battery packs

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

Verify the specific silicon revision (legacy vs. new chip) as performance metrics like quiescent current and dropout voltage differ between versions. Confirm that the application circuit utilizes appropriate input and output capacitors meeting the recommended ESR and capacitance values specified in the datasheet for stable operation. Ensure the EN pin is properly biased if the enable feature is not utilized in the design.

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

Select this component for designs requiring a wide input voltage range up to 10V and adjustable output voltages down to 1.5V. It is suitable for space-constrained applications due to its compact SOT-23-5 packaging. Consider the specific silicon version regarding quiescent current needs, as newer chips offer lower no-load current but higher full-load consumption compared to legacy versions.

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

This part belongs to the TPS763 series of low-dropout regulators designed for cost-sensitive and portable applications. The series offers fixed and adjustable output options with high accuracy. The DBV suffix indicates the 5-pin SOT-23 surface-mount package, which facilitates automated assembly and minimizes board footprint compared to larger packages.

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

TPS76301DBVT

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

How does the enable pin function?

Driving the EN pin high enables the regulator, while driving it low disables the device, entering a low-power standby mode.

What is the purpose of the FB pin?

For the adjustable version, the FB pin is used to set the output voltage via an external feedback resistor divider network.