TPS7330QP

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

The TPS7330QP is a micropower low-dropout (LDO) voltage regulator from the TPS73xx family, manufactured by Texas Instruments. It provides a fixed 3-V output with an output current range of 0 mA to 500 mA. The device features an integrated precision supply-voltage supervisor that monitors the regulated output and generates an active-low reset signal with a typical 200-ms pulse width upon undervoltage conditions. It utilizes a PMOS pass element for very low dropout voltage and quiescent current independent of load. The component operates within a junction temperature range of -40°C to 125°C and is available in Plastic DIP (PDIP-8) packaging.

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

• Integrated delayed microprocessor-reset function with active-low signal generation
• PMOS pass element providing extremely low dropout voltage
• Quiescent current remains constant and independent of output loading
• Sleep mode functionality reduces standby current consumption

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

• Microcomputer and microprocessor system reset monitoring
• Battery-powered portable applications requiring extended operating life
• Micropower low-dropout voltage regulation circuits

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

Verify the specific package configuration matches the required PCB footprint, as the TPS7330Q series includes multiple options such as PDIP, SO, and TSSOP. Confirm the presence of the 'Q' suffix indicates automotive or qualified grade specifications if applicable to the design requirements. Ensure the selected variant aligns with the necessary thermal dissipation ratings for the intended operating environment.

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

Select this component when a fixed 3-V output is required alongside precise power-supply supervision. The integrated reset function eliminates the need for external supervisor ICs. Consider the TPS7330QP over non-Q variants if automotive qualification or specific reliability standards are mandated. Evaluate the thermal performance in the final assembly to ensure operation within the specified junction temperature limits.

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

The TPS7330QP belongs to the TPS73xx family of LDO regulators, which are distinguished from the TPS71xx and TPS72xx series by their inclusion of a delayed reset function. This family replaces conventional PNP pass transistors with PMOS devices to achieve superior efficiency and lower dropout characteristics. The TPS7330 specifically targets applications needing a stable 3-V rail with built-in fault detection capabilities.

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

TPS7330QD

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

How does the TPS7330QP handle undervoltage conditions?

An internal comparator monitors the output voltage. If an undervoltage condition occurs, the RESET output turns on, pulling the signal low. Once the condition ceases, a typical 200-ms delay begins before the RESET signal goes high.

What determines the quiescent current behavior of this regulator?

The use of a PMOS pass element ensures that the quiescent current is low and remains constant, independent of the output load current ranging from 0 mA to 500 mA.