Texas Instruments TPS7A1506PDRVR

Overview

TPS7A1506PDRVR from Texas Instruments is a 400-mA ultra-low-dropout linear regulator optimized for battery-powered systems requiring sub-1-V input and 0.6-V fixed output. It operates with VIN as low as 0.7 V (VOUT + 100 mV), delivers ±1% output accuracy over load/line/temperature, achieves 80-mV dropout at 400 mA, and supports active output discharge - enabling use in camera modules and SSD power rails.

For engineers reviewing the TPS7A1506PDRVR datasheet, TPS7A1506PDRVR pinout, TPS7A1506PDRVR application, or TPS7A1506PDRVR equivalent, key selection criteria include LILO (low-input/low-output) capability, BIAS-supplied internal circuitry, SENSE feedback for remote sensing, thermal shutdown at 165°C, and WSON-6 package compatibility with high-density portable layouts.

Technical Context

The TPS7A1506PDRVR uses a dual-rail architecture: the IN pin carries the main power path (0.7–2.2 V), while the BIAS pin (2.2–5.5 V) powers internal reference and control circuitry - decoupling regulation stability from ultra-low VIN constraints. This enables operation with VIN just 100 mV above VOUT = 0.6 V.

It implements foldback current limiting (ICL = 450–1100 mA, ISC = 270 mA), global UVLO on both IN (603 mV rising) and BIAS (1.42 V rising), and active overshoot pulldown to suppress transient voltage spikes. The SENSE pin enables Kelvin connection for precision regulation at the load.

Key Specifications

Pinout & Package

TPS7A1506PDRVR is packaged in a 2-mm × 2-mm, 6-pin WSON (DRV) package with exposed thermal pad electrically tied to GND. This package supports high thermal performance (R_θJA = 75.7°C/W) and automated optical inspection (AOI) in fine-pitch mobile PCB assemblies.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-input/low-output LDO applications.

Compared with TPS7A1601DGNR and NCP163AMX060TBG, the TPS7A1506PDRVR uniquely combines 400-mA delivery, 80-mV dropout, BIAS-supplied internal circuitry, and SENSE feedback - making it the only option capable of meeting stringent transient and accuracy requirements in next-gen imaging and storage subsystems.

Availability

TPS7A1506PDRVR is available at Aetrix Electronics and suitable for camera modules, wireless earbuds, and SSD controllers requiring stable component supply across high-volume production cycles and long-lifecycle programs.

Supply support for TPS7A1506PDRVR 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 power solutions.

The TPS7A15 family was designed specifically for ultra-low-voltage, high-efficiency regulation in space-constrained portable electronics - addressing the growing demand for LILO (low-input/low-output) power delivery in advanced imaging and storage systems.

FAQ

What is the minimum input voltage required for stable operation of the TPS7A1506PDRVR?

The TPS7A1506PDRVR requires VIN ≥ VOUT + 100 mV for full specification compliance, meaning a minimum of 0.7 V when configured for its fixed 0.6-V output. Operation below this threshold places the device in dropout mode, where regulation accuracy and PSRR degrade. The BIAS rail (≥2.2 V) must also be present to power internal circuitry.

Does the TPS7A1506PDRVR support remote voltage sensing, and how is it implemented?

Yes, the TPS7A1506PDRVR supports remote sensing via its dedicated SENSE pin. Connecting SENSE directly to the load's power input node compensates for voltage drop across PCB traces between the OUT pin and the load. This ensures the regulated 0.6 V is maintained precisely at the point-of-load, achieving ±1% accuracy even with 100-mV trace resistance.

How does the active output discharge function work in the TPS7A1506PDRVR?

The TPS7A1506PDRVR integrates an internal MOSFET pulldown circuit that activates when EN is driven low, VIN or BIAS falls below UVLO thresholds, or thermal shutdown triggers. With a nominal 36-Ω resistance to GND, it discharges the output capacitance rapidly - ensuring predictable power-down behavior and preventing unintended logic states in downstream circuitry during sequencing.

What are the thermal limitations of the TPS7A1506PDRVR in its WSON-6 package?

In the 2-mm × 2-mm WSON (DRV) package, the TPS7A1506PDRVR has a junction-to-ambient thermal resistance (R_θJA) of 75.7°C/W. With a thermal shutdown threshold of 165°C and maximum ambient of 85°C, continuous 400-mA operation is viable only if power dissipation [(VIN – 0.6 V) × 400 mA] stays below ~1.06 W - requiring careful attention to PCB copper area and airflow in sealed enclosures.

Can the TPS7A1506PDRVR be used without the BIAS supply, and what are the consequences?

No - the TPS7A1506PDRVR requires a valid BIAS supply (2.2–5.5 V) to operate. The BIAS rail powers the internal bandgap reference, error amplifier, and control logic. Without BIAS, the device remains disabled regardless of IN and EN states. Attempting operation without BIAS violates recommended conditions and results in no output regulation.