Texas Instruments TPS7A1410PDRVR

Overview

TPS7A1410PDRVR from Texas Instruments is a 1-A ultra-low-dropout linear regulator (LDO) designed for low-voltage, high-efficiency power delivery in space-constrained portable electronics. It operates with input voltage as low as 0.7 V, delivers fixed 1.0 V output at ±1% accuracy over –40°C to +125°C, and achieves 70 mV max dropout at 1 A load in the WSON-6 (DRV) package. Its dual-rail architecture-using IN for main power path and BIAS for internal circuitry-enables stable regulation when VIN is only 100 mV above VOUT, making it ideal for post-DC/DC rail conditioning in camera modules and wearables.

For engineers reviewing the TPS7A1410PDRVR datasheet, TPS7A1410PDRVR pinout, TPS7A1410PDRVR application, or TPS7A1410PDRVR equivalent, key selection considerations include its 0.7–2.2 V input range, 1.0 V fixed output, active output discharge, SENSE pin for remote sensing, and thermal shutdown with 165°C trip point-critical for battery-powered systems requiring fast transient response and tight output tolerance.

Technical Context

The TPS7A1410PDRVR implements a dual-supply LDO architecture: the IN pin carries the main 1-A power path while the BIAS pin (2.2–5.5 V) powers internal reference and control circuitry, decoupling efficiency from input voltage headroom. This enables operation with VIN as low as VOUT + 100 mV without sacrificing PSRR or transient performance.

It features a hybrid brick-wall/foldback current limit (ICL = 1.035–2.45 A), global UVLO with independent thresholds on IN (603 mV typ) and BIAS (1.42 V typ), and an active pulldown circuit (RPULLDOWN = 36 Ω) that discharges the output when disabled. The SENSE pin supports remote feedback to compensate for PCB trace resistance, ensuring ±1% regulation at the load.

Key Specifications

Pinout & Package

TPS7A1410PDRVR is housed in a thermally enhanced 6-pin WSON package (DRV), measuring 2 mm × 2 mm with an exposed thermal pad electrically connected to GND. The package supports high-density layout and improved thermal dissipation (RθJA = 72.7°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS7A1410PDRVR, TPS7A1610DRVR trades 1-A capacity and dual-rail flexibility for ultra-low IQ and smaller footprint, while NCP114AMX100TBG offers lower cost and simpler biasing at the expense of current capability, accuracy, and protection features-making TPS7A1410PDRVR the only option supporting 1-A, ±1%, and SENSE-based regulation in ultra-low-VIN systems.

Availability

TPS7A1410PDRVR is available at Aetrix Electronics and suitable for camera modules, wireless earbuds, and smart watches requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing for volume production.

Supply support for TPS7A1410PDRVR 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 and embedded processing technologies, with decades of expertise in power management IC design and high-volume manufacturing.

The TPS7A14 family was developed specifically for ultra-low-input, ultra-low-output voltage regulation in next-generation portable electronics, addressing the need for high efficiency, precision, and small form factor in battery-powered systems with aggressive power budgets.

FAQ

What is the minimum input voltage required for TPS7A1410PDRVR to regulate 1.0 V output?

The TPS7A1410PDRVR requires a minimum input voltage of 1.1 V on the IN pin to maintain regulation at 1.0 V output, as specified for VIN = VOUT + 100 mV. This condition assumes the BIAS pin is supplied at ≥2.2 V or VOUT + 1.4 V (i.e., ≥2.4 V). Below this VIN threshold, the device enters dropout or disables via IN UVLO (603 mV typical).

Does TPS7A1410PDRVR require an external capacitor on the BIAS pin?

Yes, TPS7A1410PDRVR requires a minimum 0.1 µF ceramic capacitor from BIAS to GND to maintain transient response, PSRR, and noise performance. While not mandatory for basic stability, omitting it degrades load transient recovery by up to 3× and reduces PSRR by 10–15 dB across 100 Hz–1 MHz, per TI's recommended operating conditions.

Can TPS7A1410PDRVR be used without connecting the SENSE pin?

Yes, TPS7A1410PDRVR can operate with SENSE unconnected or tied to OUT, but doing so forfeits remote-sensing capability. When SENSE is tied to OUT, regulation accuracy remains ±1% at the IC output, but voltage drop across PCB traces to the load will cause proportional error at the load point-up to ±25 mV for 25 mΩ trace resistance at 1 A.

What is the purpose of the BIAS pin on TPS7A1410PDRVR?

The BIAS pin on TPS7A1410PDRVR powers the internal reference, error amplifier, and control circuitry independently from the main IN supply. This allows the IN pin to operate as low as 100 mV above VOUT (e.g., 1.1 V for 1.0 V output) while maintaining full performance-unlike single-supply LDOs that require higher VIN headroom for internal biasing.

How does the active discharge feature work on TPS7A1410PDRVR?

The TPS7A1410PDRVR integrates a 36 Ω pulldown resistor activated when EN is low, IN or BIAS falls below UVLO, or thermal shutdown triggers. This discharges the output capacitor rapidly-e.g., 100 µF drops from 1.0 V to 0.1 V in ~2.3 ms-ensuring predictable power-down sequencing and preventing back-powering of upstream circuitry.