Texas Instruments TPS799195YZUT

Overview

TPS799195YZUT from Texas Instruments is a 200-mA, fixed-output 1.95-V low-dropout linear regulator in a 5-bump DSBGA package (1.34 mm × 0.97 mm), featuring 40 μA quiescent current, 100 mV dropout at 200 mA, 66 dB PSRR at 1 kHz, and ±2% total output accuracy over –40°C to +125°C - designed for powering noise-sensitive RF circuitry such as VCOs and WLAN front-ends.

For engineers reviewing the TPS799195YZUT datasheet, TPS799195YZUT pinout, TPS799195YZUT application, or TPS799195YZUT equivalent, this page delivers verified electrical specs, validated DSBGA pin functions, real-world RF/low-noise use cases, and two confirmed alternative parts with documented functional and packaging differences.

Technical Context

The TPS799195YZUT employs a PMOS pass transistor architecture enabling ultralow dropout (100 mV @ 200 mA) and high PSRR (66 dB @ 1 kHz) even at minimal VIN–VOUT headroom. Its precision bandgap reference and feedback loop deliver ±2% output accuracy across load (500 μA–200 mA), line (2.7–6.5 V), and temperature (–40°C to +125°C).

It integrates inrush current protection triggered by EN toggle, overshoot detection with active pulldown (~350 Ω), and a dedicated NR pin for external 0.01-μF noise-reduction capacitor - reducing output noise to 10.5 × VOUT μVRMS (10 Hz–100 kHz) when used. Stability is guaranteed with ≥2-μF ceramic output capacitance (X5R/X7R, ESR < 1.0 Ω).

Key Specifications

Pinout & Package

TPS799195YZUT uses the YZU 5-bump DSBGA package (1.34 mm × 0.97 mm, 0.5-mm pitch), optimized for space-constrained RF layouts. The die-sized footprint minimizes parasitic inductance and improves high-frequency PSRR performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS799195DDCR and LP5907MFX-1.95/NOPB, the TPS799195YZUT uniquely combines DSBGA's RF-optimized footprint, NR-pin programmability for noise tailoring, and best-in-class 66 dB PSRR - making it the only choice for space-constrained, high-PSRR RF power domains.

Availability

TPS799195YZUT is available at Aetrix Electronics and suitable for wireless LAN front-ends, VCO power supplies, and wearable sensor hubs requiring stable component supply, long-term lifecycle support, and traceable sourcing for production ramp.

Supply support for TPS799195YZUT 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 solutions, with decades of LDO innovation focused on power integrity for RF and precision systems.

The TPS799 product line was engineered specifically for noise-sensitive RF and analog applications - delivering ultralow noise, high PSRR, and miniature packaging to meet the demands of modern wireless infrastructure and portable electronics.

FAQ

What is the minimum input voltage required for TPS799195YZUT to regulate 1.95 V at 200 mA?

The TPS799195YZUT requires a minimum input voltage of 2.05 V to maintain regulation at 200 mA, calculated as VOUT + VDO = 1.95 V + 0.10 V. Below this, the device enters dropout and output voltage drops linearly with input. The absolute minimum VIN per datasheet is 2.7 V unless VOUT + VDO exceeds it - which is not the case here, so 2.05 V is the functional limit for full-load operation.

Does TPS799195YZUT require an external noise-reduction capacitor to achieve its specified 20.48 μVRMS output noise?

Yes - the 20.48 μVRMS noise figure (10.5 × 1.95 V) for TPS799195YZUT is only achieved when a 0.01-μF ceramic capacitor is connected to the NR pin. Without CNR, output noise rises to ~94 × VOUT ≈ 183 μVRMS. The NR pin is essential for meeting low-noise RF requirements; omitting CNR degrades phase noise performance in VCO and LNA applications.

Can TPS799195YZUT be used in automotive applications, and what temperature qualification does it have?

Yes - TPS799195YZUT is fully specified from –40°C to +125°C junction temperature and qualified for automotive infotainment and telematics modules. It includes thermal shutdown (165°C trip), undervoltage lockout (2.2 V threshold), and robust ESD protection (±2000 V HBM). While not AEC-Q200 certified out-of-box, its operating range and built-in protections make it suitable for under-hood-adjacent or cabin-mounted wireless subsystems.

What is the recommended output capacitor for TPS799195YZUT, and why is ESR important?

TI specifies a minimum 2.2-μF X5R or X7R ceramic capacitor for TPS799195YZUT, with ESR < 1.0 Ω. Low ESR ensures adequate phase margin for stability and fast transient response; high-ESR capacitors (e.g., tantalum) risk oscillation or poor load step recovery. For optimal noise performance, pair with a 0.01-μF NR capacitor - the combination achieves both stability and <21 μVRMS noise.

How does the EN pin behavior differ between TPS799195YZUT and standard LDOs, and what is its shutdown current?

The EN pin of TPS799195YZUT is active-high with TTL/CMOS compatibility: logic high (>1.2 V) enables regulation; logic low (<0.4 V) forces shutdown. In shutdown, ground current drops to 150 nA (typical), not 0.15 μA - a critical distinction for ultra-low-power sleep modes. Unlike basic LDOs, TPS799195YZUT also provides inrush current limiting *only* when EN is toggled, preventing input rail collapse during simultaneous power-up of multiple devices.