Texas Instruments TPS799285DRVT

Overview

TPS799285DRVT from Texas Instruments is a 200-mA, fixed-output 2.85-V low-dropout linear regulator with enable (EN), ultralow noise (10.5 × V_OUT μV_RMS), high PSRR (66 dB at 1 kHz), and 40-μA quiescent current - designed for powering RF circuits, VCOs, and precision analog blocks in space-constrained portable systems.

For engineers reviewing the TPS799285DRVT datasheet, TPS799285DRVT pinout, TPS799285DRVT application, or TPS799285DRVT equivalent, key selection criteria include dropout voltage (100 mV @ 200 mA), output accuracy (±2% over load/line/temperature), stability with ≥2-μF ceramic output capacitance, and noise-reduction (NR) pin support for sub-15-μV_RMS output noise.

Technical Context

The TPS799285DRVT uses a PMOS pass element and high-gain error amplifier to achieve stable regulation with minimal headroom, delivering 66 dB PSRR at 1 kHz and maintaining performance down to 100 mV dropout. Its internal 1.193-V reference and feedback loop ensure ±2% total output accuracy across –40°C to +125°C.

It integrates inrush current protection activated on EN toggle, overshoot detection with active pulldown (~350 Ω), undervoltage lockout (UVLO) with 70-mV hysteresis, and thermal shutdown at 165°C - all while consuming only 40 μA ground current under full 200-mA load.

Key Specifications

Pinout & Package

The TPS799285DRVT is packaged in a 6-pin WSON (DRV) with 2.00 mm × 2.00 mm body size and exposed thermal pad. This thermally enhanced package delivers R_θJA = 74.2°C/W and supports continuous 200-mA operation at +85°C ambient without forced airflow.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-noise LDO applications.

Compared with TPL720F285PDBVR and LP5907MFX-2.85/NOPB, the TPS799285DRVT uniquely combines ultralow noise (30 μV_RMS), high mid-band PSRR (66 dB), and inrush protection - making it the only option qualified for VCO core supplies and high-fidelity RF receiver chains requiring <35-μV_RMS noise.

Availability

TPS799285DRVT is available at Aetrix Electronics and suitable for RF front-end modules, wearable health sensors, wireless LAN cards, and precision analog subsystems requiring stable component supply with guaranteed long-term manufacturability.

Supply support for TPS799285DRVT 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 specializing in analog, embedded processing, and connectivity technologies, with decades of LDO design expertise for mission-critical applications.

The TPS799 product line targets ultra-low-noise, high-PSRR power regulation in RF, precision analog, and portable electronics - engineered specifically for VCOs, PLLs, ADCs, and battery-powered wireless systems.

FAQ

What is the maximum input voltage rating for the TPS799285DRVT?

The TPS799285DRVT has an absolute maximum input voltage of 7.0 V. However, for reliable operation within specifications, the recommended input voltage range is 2.7 V to 6.5 V. Exceeding 6.5 V may cause permanent damage or violate thermal limits, especially at high ambient temperatures or full load.

Does the TPS799285DRVT require an external noise-reduction capacitor to achieve its specified output noise?

Yes - the TPS799285DRVT achieves its lowest output noise (30 μV_RMS) only when a 0.01-μF ceramic capacitor is connected to the NR pin. Without this capacitor, output noise rises to ~94 × V_OUT = 268 μV_RMS. The NR pin is dedicated to fixed-output variants like the TPS799285DRVT and must not be left floating.

Can the TPS799285DRVT operate stably with a 1-μF output capacitor?

No - the TPS799285DRVT is specified and tested for stability only with ≥2.2-μF ceramic output capacitance (X5R/X7R). Using a 1-μF capacitor violates the minimum requirement and risks oscillation, poor transient response, or output voltage deviation beyond ±2% accuracy - especially under load steps or temperature extremes.

What is the thermal performance of the TPS799285DRVT in its WSON (DRV) package at 200 mA load?

In the 6-pin WSON (DRV) package, the TPS799285DRVT has a junction-to-ambient thermal resistance (R_θJA) of 74.2°C/W. At 200 mA and 2.85 V output, power dissipation is ~200 mW; with 25°C ambient, junction temperature rises ~15°C - well within the –40°C to +125°C operating range and below thermal shutdown threshold (165°C).

Is the TPS799285DRVT pin-compatible with other TPS799 variants in the same DRV package?

Yes - all TPS799 fixed-output variants in the DRV (6-pin WSON) package share identical pinout, including TPS799285DRVT, TPS79933DRVT, and TPS79918DRVT. The NR pin is present and functional across all fixed versions; adjustable versions (e.g., TPS79901) substitute FB for NR but use the same DRV footprint with different internal routing.