Texas Instruments TPS72011DRVR

Overview

TPS72011DRVR 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 ±2% accuracy over –40°C to 125°C, features 110 mV dropout at full load, 48 μV_RMS output noise (10 Hz–100 kHz), and 80 dB VIN PSRR at 10 kHz - enabling clean power for RF transceivers and high-speed ADCs in portable wireless systems.

For engineers reviewing the TPS72011DRVR datasheet, TPS72011DRVR pinout, TPS72011DRVR application, or TPS72011DRVR equivalent, key selection criteria include its dual-rail operation (VIN ≥ VOUT + 0.5 V, VBIAS ≥ VOUT + 1.4 V), monotonic soft-start with 100 mA + I_LOAD inrush limiting, light-load regulation with floating IN pin (<500 μA), and stability with 2.2 μF ceramic output capacitor.

Technical Context

The TPS72011DRVR employs an NMOS pass transistor with integrated body diode and uses a precision bandgap reference with high-gain error amplifier to achieve 2% total output accuracy across load, line, temperature, and process. Its dual-rail architecture separates the main power path (VIN) from the control circuit supply (VBIAS), allowing VIN as low as VOUT + 0.5 V while VBIAS powers internal circuitry at ≥VOUT + 1.4 V.

It implements active inrush current limiting on VIN (100 mA + I_LOAD), thermal shutdown at 160°C, overcurrent protection with 420–800 mA current limit, and undervoltage lockout on VBIAS (2.41–2.49 V turn-on, 150 mV hysteresis). The device supports fast transient response: ±15 mV load step (0→350 mA/1 μs) and ±200 μV line step (±400 mV VIN/1 μs).

Key Specifications

Pinout & Package

TPS72011DRVR is packaged in a 2 mm × 2 mm SON-6 (DRV) package with exposed thermal pad, optimized for space-constrained portable designs. Thermal pad must be connected to GND for optimal thermal performance (R_θJB = 36.1°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPL72011PDP and TPS7A1611DRBR, the TPS72011DRVR uniquely combines 350 mA delivery, 110 mV dropout, 48 μV_RMS noise, and floating-IN light-load regulation - making it the only option among the three that meets full-spectrum requirements for high-performance portable RF and imaging systems.

Availability

TPS72011DRVR is available at Aetrix Electronics and suitable for wireless LAN baseband, cellular camera modules, digital still camera cores, and portable medical sensor hubs requiring stable component supply, extended temperature support (–40°C to 125°C), and long-term production continuity.

Supply support for TPS72011DRVR 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 expertise in high-reliability, high-performance power solutions.

The TPS720 family is designed specifically for RF and portable applications requiring ultra-low noise, high PSRR, dual-rail efficiency, and light-load retention - targeting next-generation wireless, imaging, and battery-constrained edge devices.

FAQ

What is the minimum input voltage required for TPS72011DRVR to regulate 1.1 V output?

The TPS72011DRVR requires VIN ≥ VOUT + 0.5 V under recommended operating conditions, meaning a minimum of 1.6 V on the IN pin when delivering 1.1 V at the output. This headroom enables efficient operation from intermediate rails generated by upstream DC-DC converters. Note that VBIAS must be ≥ VOUT + 1.4 V (i.e., ≥2.5 V) independently.

Does TPS72011DRVR support operation with the IN pin disconnected?

Yes - the TPS72011DRVR supports a unique floating-IN mode where the IN pin is left unconnected. In this state, the device regulates 1.1 V output for loads up to 500 μA using current sourced from the BIAS pin. This feature is explicitly designed for ultra-low-power retention modes in portable systems where upstream DC-DC converters are disabled but core voltage must be maintained.

What output capacitor value and type are required for stable operation of TPS72011DRVR?

The TPS72011DRVR is stable with a minimum 2.2 μF ceramic output capacitor. X5R or X7R dielectrics are recommended due to their stable capacitance and low ESR (<250 mΩ) over temperature. A 2.2 μF capacitor also enables the specified 140 μs start-up time and ±15 mV load transient response. Larger values improve transient margin but are not required for stability.

How does the BIAS pin function in TPS72011DRVR, and what voltage must it be supplied with?

The BIAS pin powers the internal control circuitry (error amplifier, reference, etc.) independently from the main power path (IN). It must be supplied with ≥VOUT + 1.4 V - for the TPS72011DRVR, this means ≥2.5 V. TI recommends bypassing BIAS with a 0.1 μF ceramic capacitor to ground to ensure robust transient response and noise immunity on the control rail.

What protection features are integrated into TPS72011DRVR?

The TPS72011DRVR integrates thermal shutdown (trip at 160°C, reset at 140°C), output current limiting (420–800 mA), undervoltage lockout on the BIAS pin (2.41–2.49 V turn-on with 150 mV hysteresis), and ESD protection (±2000 V HBM). These features ensure robust operation in portable environments subject to thermal stress, short circuits, and electrostatic events without requiring external protection circuitry.