Texas Instruments TPS72011YZUT

Overview

TPS72011YZUT from Texas Instruments is a 350 mA ultra-low VIN, RF-grade low-dropout linear regulator with bias pin, delivering 1.1 V output at ±2% accuracy over –40°C to 125°C, 110 mV dropout at full load, and 48 μV_RMS output noise (10 Hz–100 kHz). It enables high-efficiency dual-rail power delivery in space-constrained RF and imaging subsystems.

For engineers reviewing the TPS72011YZUT datasheet, TPS72011YZUT pinout, TPS72011YZUT application, or TPS72011YZUT equivalent, key selection criteria include its dual-rail architecture (VIN + VBIAS), sub-1.2 V output capability, 38 μA quiescent current, monotonic soft-start, and DSBGA-5 package compatibility with handheld camera and wireless LAN power rails.

Technical Context

The TPS72011YZUT implements a dual-rail NMOS LDO architecture where VIN supplies the main power path and VBIAS powers the control circuitry-enabling VIN as low as VOUT + 0.5 V while VBIAS ≥ VOUT + 1.4 V or 2.5 V. This decoupling allows high-efficiency operation when VIN is sourced from a DC-DC converter.

It features a precision bandgap reference, advanced BICMOS process, and integrated soft-start limiting inrush current to 100 mA + I_LOAD. The device supports light-load regulation with IN floating (≤500 μA sourced from VBIAS), UVLO on VBIAS (2.45 V threshold, 150 mV hysteresis), and thermal shutdown at 160°C.

Key Specifications

Pinout & Package

TPS72011YZUT is packaged in a 1.33 mm × 0.96 mm, 5-pin DSBGA (YZU) with bottom-side solder balls. Thermal performance: R_θJA = 144.9°C/W, R_θJB = 27.5°C/W. No exposed thermal pad; ground connection is via Ball B2.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS72011YZUT, the TPS72012YZUT offers identical performance at 1.2 V-ideal for voltage-margining or alternate SoC variants-while the TPS79511DCQ provides legacy single-rail simplicity but sacrifices 350 mA capability, ultra-low dropout, and bias-rail flexibility critical for modern portable RF designs.

Availability

TPS72011YZUT is available at Aetrix Electronics and suitable for mobile camera modules, wireless LAN baseband supplies, portable medical imaging sensors, and low-power IoT edge node cores requiring stable component supply with guaranteed long-term manufacturability.

Supply support for TPS72011YZUT 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 and broad automotive, industrial, and consumer qualification.

The TPS720 family was engineered for ultra-low-noise, dual-rail power delivery in battery-powered RF and imaging systems-prioritizing sub-1.2 V outputs, 350 mA capability in sub-1.5 mm² packages, and seamless integration with DC-DC converters.

FAQ

What is the minimum input voltage required for TPS72011YZUT to regulate 1.1 V?

The TPS72011YZUT requires VIN ≥ VOUT + 0.5 V = 1.6 V under normal operation. However, it can maintain regulation with VIN floating when load ≤500 μA-drawing current solely from VBIAS. For full 350 mA operation, VIN must be ≥1.6 V and ≤VBIAS, with VBIAS ≥2.5 V or VOUT + 1.4 V (2.5 V).

Does TPS72011YZUT require external capacitors, and what values are recommended?

Yes: TPS72011YZUT requires a 2.2 μF ceramic output capacitor (X5R/X7R, ESR <250 mΩ) for stability and transient response. A 0.1–1 μF ceramic input capacitor on VIN is recommended for noise suppression, and a 0.1 μF capacitor on VBIAS improves transient immunity. No capacitor is mandatory on EN or NC.

How does the VBIAS pin function in TPS72011YZUT, and what voltage range is acceptable?

The VBIAS pin powers the internal control circuitry independently of VIN, enabling VIN to operate as low as VOUT + 0.5 V. VBIAS must be ≥2.5 V or VOUT + 1.4 V (2.5 V), and ≤5.5 V. It draws only ~38 μA quiescent current, making it ideal for sourcing from a higher-voltage auxiliary rail or DC-DC output.

Can TPS72011YZUT be used in applications requiring zero-output-current shutdown?

Yes: When EN is pulled ≤0.4 V, TPS72011YZUT enters shutdown mode with ground current ≤2 μA (typical 0.5 μA). Output is disabled and isolated; VBIAS and VIN may remain powered. This enables ultra-low-power system states-e.g., retaining configuration while disabling core voltage.

What thermal considerations apply to TPS72011YZUT in the YZU (DSBGA-5) package?

In the 1.33 mm × 0.96 mm DSBGA-5 package, TPS72011YZUT has R_θJA = 144.9°C/W and R_θJB = 27.5°C/W. For 350 mA at 1.1 V with 1.6 V VIN, power dissipation is ~175 mW-raising junction temperature ~25°C above ambient with minimal copper. Use ≥2 cm² inner-layer ground pour and avoid enclosing the package to ensure safe operation up to 125°C.