Texas Instruments TPS799195DRVT

Overview

TPS799195DRVT from Texas Instruments is a 200-mA, low-quiescent-current (40 μA), ultralow-noise (10.5 × V_OUT μV_RMS), high-PSRR (66 dB @ 1 kHz) low-dropout linear regulator in a 6-pin WSON package with fixed 1.95-V output. It delivers ±2% total output accuracy over load, line, and temperature (–40°C to +125°C) and features 100-mV typical dropout at 200 mA. It is used to power noise-sensitive RF circuitry such as VCOs and WLAN front-ends.

For engineers reviewing the TPS799195DRVT datasheet, TPS799195DRVT pinout, TPS799195DRVT application, or TPS799195DRVT equivalent, key selection criteria include its 1.95-V fixed output, 6-pin WSON (2.00 mm × 2.00 mm) thermal performance (R_θJA = 74.2°C/W), inrush current protection on EN toggle, and compatibility with ≥2-μF ceramic output capacitors.

Technical Context

The TPS799195DRVT employs a PMOS pass element with an advanced BiCMOS process to achieve 100-mV dropout at full 200-mA load while maintaining high PSRR across frequency (66 dB @ 1 kHz, 51 dB @ 10 kHz). Its feedback loop uses a precision 1.193-V internal reference and achieves ±2% overall accuracy across –40°C to +125°C junction temperature.

It integrates inrush current limiting activated on EN toggle, overshoot detection (5% threshold), and undervoltage lockout (UVLO) with 70-mV hysteresis. The device supports fast start-up (≤50 μs with 0.01-μF NR capacitor) and stable operation with low-ESR (≤1.0 Ω), ≥2-μF ceramic output capacitance.

Key Specifications

Pinout & Package

TPS799195DRVT is housed in a thermally enhanced 6-pin WSON package (2.00 mm × 2.00 mm, exposed thermal pad) with R_θJA = 74.2°C/W and R_θJC(bot) = 7.2°C/W, enabling high-power-density PCB layouts in space-constrained RF modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPL720F195PDBVR and MCP1703T-195I/MB, the TPS799195DRVT uniquely combines 66-dB PSRR, 100-mV dropout, and integrated inrush/overshoot protection in a thermally optimized 2-mm² WSON package - making it the only option qualified for high-performance RF biasing with strict size and noise constraints.

Availability

TPS799195DRVT is available at Aetrix Electronics and suitable for RF power amplifier biasing, VCO core supply, wearable sensor hubs, and industrial wireless nodes requiring stable component supply with guaranteed long-term lifecycle support.

Supply support for TPS799195DRVT 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 company specializing in analog and embedded processing technologies, with leadership in power management ICs and high-reliability signal-chain solutions.

The TPS799 product line is designed specifically for noise-sensitive RF and precision analog applications demanding ultralow noise, high PSRR, and fast transient response in miniature packages.

FAQ

What is the maximum input voltage rating for the TPS799195DRVT?

The TPS799195DRVT has an absolute maximum input voltage of 7.0 V. However, its recommended operating input range is 2.7 V to 6.5 V. Operation above 6.5 V risks exceeding absolute maximum ratings and may cause permanent damage. For reliable 1.95-V output, minimum input must be ≥2.05 V (V_OUT + V_DO).

Does the TPS799195DRVT require an external noise-reduction capacitor?

Yes - the TPS799195DRVT includes an NR pin and benefits significantly from a 0.01-μF ceramic capacitor connected between NR and GND. This reduces output noise from 94 × V_OUT to 10.5 × V_OUT μV_RMS (≈20.3 μV_RMS). Without it, PSRR and noise performance degrade substantially, especially below 100 kHz.

Can the TPS799195DRVT be used without connecting the EN pin?

Yes - the EN pin can be directly tied to IN for always-on operation. When unconnected or pulled high via resistor, the TPS799195DRVT remains active. However, tying EN to IN forfeits inrush current protection and overshoot detection, which activate only during controlled EN toggling.

What is the thermal performance of the TPS799195DRVT in its WSON package?

The TPS799195DRVT in DRV (6-pin WSON) package has R_θJA = 74.2°C/W and R_θJC(bot) = 7.2°C/W. With proper PCB copper pour under the exposed thermal pad, it sustains 200-mA load at +125°C ambient in typical 4-layer boards. Derating is required above 150 mW power dissipation without forced airflow.

Is the TPS799195DRVT compatible with ceramic output capacitors smaller than 2.2 μF?

No - the TPS799195DRVT is specified and tested for stability only with ≥2.2-μF ceramic output capacitance (X5R/X7R, ESR ≤1.0 Ω). Using smaller values risks oscillation or degraded transient response. TI's datasheet explicitly states "stable with a low-ESR, 2-μF typical output capacitance" and shows instability in characterization below this threshold.