TPS7A0323DBVR

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

The TPS7A0323DBVR is a fixed-output low-dropout linear regulator from the Texas Instruments TPS7A03 series, housed in an SOT-23-5 package. It provides a nominal output voltage of 2.3 V with a maximum continuous output current of 200 mA. The device operates within an input voltage range of 1.5 V to 6.0 V and maintains an ultra-low quiescent current of 200 nA (typical) even during dropout conditions. Shutdown current is specified at 3 nA (typical). It features excellent transient response with less than 10 µs settling time for load steps between 1 mA and 50 mA. The power supply rejection ratio is typically 55 dB at 1 kHz.

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

• Ultra-low quiescent current consumption maintained even under dropout conditions to maximize battery life
• Smart enable circuit featuring an internal pulldown resistor that ensures the device remains disabled when the EN pin is left floating
• Fast transient response capability designed to support modern microcontroller core voltages with minimal output voltage deviation

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

• Wearable electronics
• Thermostats, smoke and heat detectors
• Gas, heat, and water meters
• Blood glucose monitors and pulse oximeters
• Residential circuit breakers and fault indicators

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

Verify the specific suffix DBVR corresponds to the SOT-23-5 package configuration required for your design. Confirm that the fixed 2.3 V output voltage aligns with your system's power rail requirements. Ensure input capacitors meet the recommended minimum values for stability. Check the latest datasheet revision for any updates regarding thermal performance or absolute maximum ratings before finalizing procurement.

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

Select this component when ultra-low standby current is critical for extending battery shelf life in portable devices. The integrated smart enable pulldown reduces the need for external components compared to regulators requiring active pull-down circuits. Consider the 200 mA output capacity against peak load demands. Verify that the 1.5 V to 6.0 V input range covers your source voltage variations across the full operating temperature range.

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

This device belongs to the TPS7A03 family of nanopower IQ low-dropout regulators. The family offers various fixed output voltages ranging from 0.8 V to 5.0 V in 50 mV steps. Other packages in the series include X2SON and DSBGA. The TPS7A03 series is engineered specifically for applications where minimizing ground current is essential for energy efficiency.

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

TPS7A0323DQNR: Alternative package variant (X2SON) with identical electrical specifications.

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

How does the smart enable feature function when the EN pin is unconnected?

The device includes an internally controlled pulldown resistor that keeps the LDO disabled when the EN pin is left floating, preventing unintended startup.

What is the typical quiescent current during shutdown mode?

The typical shutdown current is 3 nA when the enable pin is driven low.