Texas Instruments TPS799195YZUR

Overview

TPS799195YZUR from Texas Instruments is a 200-mA, low-quiescent-current, ultralow-noise, high-PSRR low-dropout linear regulator in a 5-bump DSBGA package (1.34 mm × 0.97 mm), delivering fixed 1.95 V output with ±2% accuracy over –40°C to +125°C, 100 mV dropout at 200 mA, and 40 μA typical ground current - optimized for RF power rails in wearable electronics and wireless LAN modules.

For engineers reviewing the TPS799195YZUR datasheet, TPS799195YZUR pinout, TPS799195YZUR application, or TPS799195YZUR equivalent, key selection criteria include its 1.95 V fixed output, DSBGA-5 footprint compatibility, 66 dB PSRR at 1 kHz, 10.5 × VOUT (20.48 μVRMS) output noise with CNR, and inrush current protection during EN toggle startup.

Technical Context

The TPS799195YZUR employs a PMOS pass element with advanced BiCMOS fabrication to achieve 100 mV dropout at full 200 mA load while maintaining 40 μA quiescent current. Its high-gain error amplifier enables 66 dB PSRR at 1 kHz and fast transient response via active pulldown (350 Ω) on 5% output overshoot.

It integrates inrush current limiting activated at EN toggle, undervoltage lockout (1.90–2.65 V), thermal shutdown (165°C), and a dedicated NR pin for external 0.01 μF noise-reduction capacitor - enabling <21 μVRMS output noise and improved PSRR beyond 10 kHz.

Key Specifications

Pinout & Package

TPS799195YZUR is packaged in a 5-bump, die-sized ball grid array (DSBGA) measuring 1.34 mm × 0.97 mm with 0.4-mm pitch, optimized for space-constrained portable RF designs. The YZU package uses bottom-side solder balls; GND is connected via exposed thermal pad (Pin 3, B2).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS799195YZUR, the TPS799195DDCR offers identical regulation performance in a larger, more manufacturable package, while the LP5907MFX-1.95/NOPB trades PSRR and noise performance for lower IQ and cost - making the YZUR variant essential for RF-critical 1.95 V rails demanding sub-21 μVRMS noise and 66 dB PSRR.

Availability

TPS799195YZUR is available at Aetrix Electronics and suitable for wearable electronics, wireless LAN modules, VCO biasing, and smartphone camera subsystems requiring stable component supply, long-lifecycle support, and DSBGA-5 packaging for miniaturized RF designs.

Supply support for TPS799195YZUR 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 power management ICs, with decades of LDO innovation focused on precision, efficiency, and reliability.

The TPS799 product line delivers ultralow-noise, high-PSRR LDOs for RF and precision analog systems - designed specifically for noise-sensitive applications like VCOs, wireless transceivers, and high-speed data converters.

FAQ

What is the maximum input voltage rating for the TPS799195YZUR?

The TPS799195YZUR has an absolute maximum input voltage of 7.0 V. However, its recommended operating input range is 2.7 V to 6.5 V. For reliable 1.95 V output at 200 mA, minimum input must be ≥2.05 V (VOUT + VDO). Exceeding 6.5 V risks permanent damage per Absolute Maximum Ratings.

Does the TPS799195YZUR require an external noise-reduction capacitor to achieve specified output noise?

Yes - the TPS799195YZUR achieves its 20.48 μVRMS (10 Hz–100 kHz) output noise specification only when a 0.01 μF ceramic capacitor is connected to the NR pin. Without CNR, output noise rises to ~94 × VOUT (183 μVRMS), degrading RF system phase noise and EVM performance.

Can the TPS799195YZUR be used without connecting the EN pin?

Yes - the EN pin can be tied directly to IN for always-on operation. When left unconnected, internal leakage may cause unpredictable behavior; TI explicitly recommends tying EN to IN if shutdown functionality is unused. This configuration disables inrush limiting but maintains full regulation performance.

What thermal considerations apply to the TPS799195YZUR in its YZU DSBGA package?

The TPS799195YZUR in YZU package has RθJA = 143.3°C/W and RθJB = 84.7°C/W. With 200 mA load and 2.05 V dropout, power dissipation is ~210 mW - resulting in ~30°C junction rise above ambient when properly soldered to a 2-layer board. Thermal pad (GND, Pin B2) must be fully connected to solid ground plane for safe operation at max load.

Is the TPS799195YZUR compatible with standard 0.4-mm pitch DSBGA reflow profiles?

Yes - the TPS799195YZUR YZU package is qualified for standard Pb-free reflow per JEDEC J-STD-020. Its 0.4-mm ball pitch, 0.23-mm ball height, and NiAu surface finish are compatible with Type 3 solder paste and peak temperatures up to 260°C. Board design must follow TI's layout guidelines for thermal pad solder stencil (70–80% open area).