Texas Instruments TPS72011YZUR

Overview

TPS72011YZUR from Texas Instruments is a 350 mA ultra-low VIN, RF-optimized low-dropout linear regulator with dual-rail bias architecture. It delivers 1.1 V output at ≤110 mV dropout (350 mA), 48 μV_RMS output noise (10 Hz–100 kHz), and 80 dB VIN PSRR up to 10 kHz-designed for powering RF analog blocks and core logic in battery-constrained handheld devices.

For engineers reviewing the TPS72011YZUR datasheet, TPS72011YZUR pinout, TPS72011YZUR application, or TPS72011YZUR equivalent, key selection considerations include its bias-supply-enabled efficiency gain in low-V_OUT systems, monotonic soft-start with 100 mA + I_LOAD inrush limiting, and stable operation with only 2.2 μF ceramic output capacitance.

Technical Context

The TPS72011YZUR employs a BICMOS-based NMOS pass transistor with separate V_IN (main power path) and V_BIAS (control circuit supply) rails-enabling high efficiency when V_IN = V_OUT + 0.5 V while V_BIAS ≥ V_OUT + 1.4 V. Its control loop achieves >1 MHz bandwidth for exceptional transient response: ±15 mV load step (0→350 mA/1 μs) and ±200 μV line step (±400 mV/1 μs).

It features integrated UVLO on V_BIAS (2.45 V nominal, 150 mV hysteresis), thermal shutdown (160°C trip), and current limit (420–800 mA). The device supports a unique light-load regulation mode: when V_IN is floating, it sustains regulated 1.1 V output up to 500 μA sourced entirely from V_BIAS.

Key Specifications

Pinout & Package

TPS72011YZUR is packaged in a 1.33 mm × 0.96 mm, 5-ball DSBGA (YZU) with bottom-side solder balls. Thermal performance: R_θJA = 144.9°C/W, R_θJB = 27.5°C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPL72011PDP, TPS72011YZUR offers superior miniaturization (1.33×0.96 mm vs 2×2 mm) and lower thermal resistance to board (27.5°C/W), making it optimal for ultra-thin mobile designs; versus TPS79511DRVR, it provides 40% higher current, 110 mV lower dropout, and unique IN-float regulation-critical for advanced power sequencing.

Availability

TPS72011YZUR is available at Aetrix Electronics and suitable for RF transceiver power, mobile camera core supply, always-on sensor nodes, and low-power microcontroller core applications requiring stable component supply across high-mix, low-volume production runs.

Supply support for TPS72011YZUR 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 expertise in power management IC design.

The TPS720 family was engineered specifically for RF and portable applications demanding ultra-low noise, high PSRR, minimal dropout, and innovative bias-rail efficiency-targeting digital cameras, cellular camera phones, and wireless LAN endpoints.

FAQ

What is the guaranteed output voltage accuracy of the TPS72011YZUR over temperature and load?

The TPS72011YZUR guarantees ±2% output voltage accuracy across –40°C to 125°C junction temperature, full load range (0–350 mA), and specified input conditions. This includes variations due to line, load, process, and temperature extremes-ensuring reliable core voltage delivery in automotive cabin modules and industrial edge sensors where thermal cycling is severe.

Can the TPS72011YZUR operate with V_IN disconnected while maintaining regulation?

Yes-the TPS72011YZUR supports IN-pin-floating operation, delivering regulated 1.1 V output up to 500 μA sourced solely from the V_BIAS rail. This feature is confirmed in Section 7.1 and Figure 7 of the datasheet and enables power-saving modes where upstream DC-DC converters are disabled but system state must be retained.

What is the minimum V_BIAS voltage required for the TPS72011YZUR to function correctly?

The minimum V_BIAS voltage is the greater of 2.5 V or V_OUT + 1.4 V-so for TPS72011YZUR (1.1 V output), V_BIAS must be ≥2.5 V. This ensures sufficient headroom for internal reference and error amplifier operation, as specified in Section 6.3 Recommended Operating Conditions.

Does the TPS72011YZUR require external capacitors, and what are their values?

Yes: a 2.2 μF ceramic capacitor is mandatory on the OUT pin for stability and transient response; a ≥1 μF ceramic capacitor is recommended on IN; and a 0.1 μF capacitor is recommended on BIAS if source impedance is high. All capacitors must have ≤250 mΩ ESR, per Section 8.1.1.

How does the TPS72011YZUR achieve its 80 dB PSRR at 10 kHz despite ultra-low dropout?

The TPS72011YZUR achieves high PSRR through an advanced BICMOS control loop with ultra-wide bandwidth and high loop gain-explicitly cited in Section 7.1 Overview. Its dual-rail architecture isolates V_BIAS-supplied control circuitry from noisy V_IN, enabling 80 dB rejection at 10 kHz even with only 110 mV dropout headroom.