Texas Instruments TPS7A1413PYBKR

Overview

TPS7A1413PYBKR from Texas Instruments is a 1-A ultra-low-dropout linear regulator (LDO) designed for low-input, low-output voltage systems. It operates with input as low as 0.7 V and delivers fixed 1.3 V output with ±1% accuracy over load, line, and temperature (–40°C to +125°C), 70 mV max dropout at 1 A, and active output discharge - ideal for powering core rails in battery-constrained portable electronics.

For engineers reviewing the TPS7A1413PYBKR datasheet, TPS7A1413PYBKR pinout, TPS7A1413PYBKR application, or TPS7A1413PYBKR equivalent, this page provides verified package mapping (YBK WCSP, 0.71 mm × 1.16 mm), confirmed pin functions, real-world transient response data (20 mV load step), PSRR performance (80 dB @ 1 kHz), and two validated alternative parts for design flexibility.

Technical Context

The TPS7A1413PYBKR uses a dual-rail architecture: the IN pin supplies the main power path (down to VIN = VOUT + 100 mV), while the BIAS pin (2.2 V to 5.5 V) powers internal reference and control circuitry - enabling stable regulation even when VIN is near VOUT. Its global UVLO requires both VIN ≥ 603 mV (rising) and VBIAS ≥ 1.42 V (rising) before enabling.

It implements hybrid foldback current limiting (ICL = 1.035–2.45 A, ISC = 600 mA) and thermal shutdown (TSD = 165°C, hysteresis = 25°C). The SENSE pin supports remote feedback for <1% output error under PCB trace resistance, and EN is active-high with VIH = 0.6 V and VIL = 0.25 V.

Key Specifications

Pinout & Package

TPS7A1413PYBKR is packaged in a 6-bump YBK WCSP (Wafer Chip Scale Package), measuring 0.71 mm × 1.16 mm with 0.4-mm pitch. This ultra-compact, bottom-terminal package targets space-constrained applications such as camera modules and earbuds.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-dropout LDO applications.

Compared with TPS7A1413PYBKR, TPS7A1613DRVR trades compactness and SENSE capability for slightly higher quiescent current and larger footprint, while TPS7A2013PDQNR sacrifices LILO operation and current capability for minimal size - making TPS7A1413PYBKR uniquely suited for high-current, ultra-low-voltage, space-constrained designs.

Availability

TPS7A1413PYBKR is available at Aetrix Electronics and suitable for camera modules, wireless earbuds, and smart watches requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.

Supply support for TPS7A1413PYBKR 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 ICs for portable and industrial applications.

The TPS7A14 family was designed specifically for ultra-low-input, ultra-low-output voltage systems in battery-powered portable electronics - prioritizing efficiency, transient response, and miniaturization without compromising accuracy or protection features.

FAQ

What is the minimum input voltage required for TPS7A1413PYBKR to regulate at 1.3 V?

The TPS7A1413PYBKR requires VIN ≥ VOUT + 100 mV for guaranteed regulation, meaning minimum input is 1.4 V under recommended operating conditions. However, it can operate as low as 0.7 V input with proper BIAS rail support - though regulation is not assured below VIN = VOUT + 100 mV. The device specifies dropout voltage of 70 mV max at 1 A when TJ ≤ +85°C.

Does TPS7A1413PYBKR support remote sensing, and how does it improve accuracy?

Yes, TPS7A1413PYBKR includes a dedicated SENSE pin (Pin B1) that connects directly to the load to close the feedback loop remotely. This compensates for voltage drop across PCB traces between OUT and the load, improving output accuracy from ±1% (local sense) to typically ±0.5% - critical for precision analog or high-current digital loads.

What is the purpose of the BIAS pin on TPS7A1413PYBKR, and what voltage range must it be supplied with?

The BIAS pin powers the internal reference, error amplifier, and control circuitry independently of the main IN rail. It must be supplied with 2.2 V to 5.5 V - and must exceed VOUT + 1.4 V for full specification compliance. This architecture enables stable regulation even when IN is as low as 0.7 V, significantly improving system efficiency in LILO applications.

How does the active discharge function work on TPS7A1413PYBKR, and what is its typical pull-down resistance?

When TPS7A1413PYBKR is disabled (EN low, UVLO triggered, or thermal shutdown), an internal MOSFET connects a 36-Ω pulldown resistor between OUT and GND. This actively discharges output capacitance to prevent floating voltages or back-powering of upstream components. Discharge time depends on COUT and parallel load resistance - for example, 10 µF + 10 kΩ yields ~360 µs discharge to 10%.

What protection features are integrated into TPS7A1413PYBKR?

TPS7A1413PYBKR integrates foldback current limiting (ICL = 1.035–2.45 A, ISC = 600 mA), thermal shutdown (165°C trip, 140°C reset), global UVLO (coordinated VIN and VBIAS thresholds), and reverse-current protection. These features ensure robust operation during fault conditions without external components - reducing BOM count and improving reliability in portable systems.