Texas Instruments TPS73430DRVT

Overview

TPS73430DRVT from Texas Instruments is a 250mA, ultra-low-noise, high-PSRR low-dropout linear regulator in a 2mm × 2mm WSON-6 package. It delivers a fixed 3.0V output with 2% accuracy over load, line, and temperature (–40°C to +125°C), 125mV dropout at 250mA, 44µA quiescent current, and 28µVRMS output noise - ideal for powering RF front-ends and precision analog circuitry in portable wireless devices.

For engineers reviewing the TPS73430DRVT datasheet, TPS73430DRVT pinout, TPS73430DRVT application, or TPS73430DRVT equivalent, key selection criteria include its stable operation with 2.0µF ceramic output capacitance, active-high enable pin, thermal shutdown protection, and compatibility with low-ESR capacitors in space-constrained layouts.

Technical Context

The TPS73430DRVT uses a PMOS pass transistor architecture enabling very low dropout voltage and inherent reverse-current blocking. Its feedback loop incorporates a precision 1.208V internal reference and high-gain error amplifier, achieving 2% overall output accuracy and excellent load/transient response.

It features integrated undervoltage lockout (UVLO) with 2.2V turn-on threshold and 70mV hysteresis, thermal shutdown activation at ~165°C, and internal current limiting (~300–900mA). The device is stable with 2.0µF minimum ceramic output capacitance and requires no minimum load.

Key Specifications

Pinout & Package

TPS73430DRVT is housed in a thermally enhanced 2mm × 2mm WSON-6 package (DRV) with an exposed thermal pad tied to GND. Pin 3 is NC (not internally connected) and must be left open or grounded.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Compared with TPS73430DDCT, the TPS73430DRVT offers superior thermal performance and smaller footprint; compared with MCP1703T-3002E/MB, it delivers significantly lower noise, higher PSRR, tighter accuracy, and full protection features - making it the preferred choice for RF and precision analog power rails.

Availability

TPS73430DRVT is available at Aetrix Electronics and suitable for cellular handsets, Wi-Fi modules, industrial sensor nodes, and medical wearables requiring stable component supply with guaranteed long-term manufacturability and automotive-grade temperature range support.

Supply support for TPS73430DRVT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader designing analog ICs, embedded processors, and connectivity solutions for industrial, automotive, and consumer markets.

The TPS734xx family was engineered specifically for noise-sensitive, battery-powered RF and precision analog systems - balancing ultra-low noise, high PSRR, low I_Q, and robust protection in miniature packages.

FAQ

What is the maximum input voltage rating for the TPS73430DRVT?

The TPS73430DRVT supports an absolute maximum input voltage of +7.0V, but its operational input range is specified from 2.7V to 6.5V. Exceeding 6.5V may degrade long-term reliability or trigger internal protection circuits. For reliable 3.0V output regulation, VIN must remain ≥ VOUT + VDO (≥3.125V typical) and ≤6.5V per datasheet limits.

Does the TPS73430DRVT require an external noise reduction capacitor to achieve its 28µVRMS specification?

Yes - the 28µVRMS output noise value for the TPS73430DRVT is measured with a 0.01µF capacitor connected between the NR pin and GND. Without this capacitor, output noise rises significantly (to ~95×VOUT µVRMS). The NR pin is high-impedance, so a low-leakage ceramic capacitor is required for optimal noise performance.

Can the TPS73430DRVT operate without any output load?

Yes, the TPS73430DRVT is stable and functional with no output load. However, output voltage accuracy is only guaranteed for loads ≥1mA. At light loads (<1mA) and high junction temperatures (+125°C), output voltage may drift upward slightly, potentially engaging the internal pull-down circuit - which limits drift to ~5% but increases ground current by ~50µA.

What is the thermal pad connection requirement for the TPS73430DRVT WSON-6 package?

The exposed thermal pad (Pin 6) of the TPS73430DRVT must be soldered to a PCB copper pour connected to the system GND plane. This connection is mandatory for thermal performance: omitting it raises R_θJA from 140°C/W (high-K board) to ~200°C/W, risking thermal shutdown under 250mA load at elevated ambient temperatures.

Is the enable pin (EN) of the TPS73430DRVT compatible with 1.8V logic levels?

Yes - the TPS73430DRVT EN pin has a guaranteed turn-on threshold of VEN(HI) ≥1.2V and turn-off threshold of VEN(LO) ≤0.4V, making it fully compatible with 1.8V CMOS logic. With 1.8V applied, EN draws only 0.03–1.0µA, ensuring negligible loading on low-power GPIOs.