Texas Instruments TPS7A1119PYKAR

Overview

TPS7A1119PYKAR from Texas Instruments is a 500-mA ultra-low dropout linear regulator (LDO) with dual-input architecture (IN and BIAS pins), supporting input voltages as low as 0.75 V and output voltages down to 0.5 V. It delivers 1.5% output accuracy over load, line, and temperature (–40°C to +125°C), achieves 110 mV max dropout at 500 mA in the YKA package, and draws only 1.6 µA typical quiescent current on the IN pin-enabling high-efficiency power delivery to core rails of wearables and ultra-low-power MCUs.

For engineers reviewing the TPS7A1119PYKAR datasheet, TPS7A1119PYKAR pinout, TPS7A1119PYKAR application, or TPS7A1119PYKAR equivalent, this page provides verified package mapping (DSBGA-5), confirmed pin functions (IN/OUT/GND/BIAS/EN), validated dropout and PSRR performance at 500 mA, and real-world use cases in battery-constrained systems where sub-1-V operation and active output discharge are required.

Technical Context

The TPS7A1119PYKAR implements a dual-rail architecture: the IN pin supplies the pass element while the BIAS pin powers internal control circuitry, enabling stable regulation even when VIN is only 110 mV above VOUT. Its global UVLO combines independent rising/falling thresholds on both IN (675 mV / 600 mV) and BIAS (1.54 V / 1.44 V) to prevent erratic startup under weak or mismatched supply conditions.

It features foldback current limiting (920 mA typical for YKA), thermal shutdown at 160°C, and an active pulldown circuit (120 Ω) that discharges the output upon disable-critical for deterministic power sequencing in multi-rail SoC systems. The device operates without external compensation and requires only 2.2 µF C_IN, 0.1 µF C_BIAS, and 2.2–22 µF C_OUT (ESR < 250 mΩ).

Key Specifications

Pinout & Package

TPS7A1119PYKAR is housed in a 0.74-mm × 1.09-mm, 5-pin DSBGA (YKA) package with 0.35-mm pitch and exposed substrate. Thermal performance is optimized via board-level copper area under the package.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS7A1119PYKAR, the 1.8-V variant offers identical form-factor and performance for 1.8-V systems, while the TPS7A0519PDQNR trades current capability and dual-rail flexibility for smaller size and lower cost in less demanding applications.

Availability

TPS7A1119PYKAR is available at Aetrix Electronics and suitable for smart wearables, wireless earbuds, and portable medical devices requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for TPS7A1119PYKAR 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 technologies, with decades of LDO design expertise for battery-powered systems.

The TPS7A11 family was engineered specifically for ultra-low-voltage, ultra-low-power applications-including wearables and IoT edge sensors-where traditional LDOs fail due to insufficient headroom or excessive quiescent current.

FAQ

What is the output voltage of the TPS7A1119PYKAR?

The TPS7A1119PYKAR delivers a fixed 1.9 V output with ±1.5% accuracy over load, line, and temperature (–40°C to +125°C). This precision is maintained across its full 0.75–3.3 V input range and 0–500 mA load, making it suitable for powering modern low-voltage microcontroller cores and sensor interfaces where tight regulation is critical.

Does the TPS7A1119PYKAR require an external BIAS supply?

Yes-the TPS7A1119PYKAR requires a separate BIAS supply (1.7–5.5 V) on the C1 pin to power its internal control circuitry. This dual-rail architecture enables stable regulation even when the IN pin voltage is as low as 110 mV above the 1.9 V output. Without a valid BIAS voltage above 1.44 V (falling threshold), the device remains disabled regardless of IN or EN state.

What is the maximum dropout voltage of the TPS7A1119PYKAR at full load?

The TPS7A1119PYKAR exhibits a maximum dropout voltage of 110 mV at 500 mA output current in its YKA (DSBGA-5) package, measured at TJ = 125°C. This ultra-low dropout allows the device to sustain 1.9 V output from an input as low as 2.01 V-maximizing usable battery voltage and extending runtime in space-constrained portable devices.

How does the active discharge function work on the TPS7A1119PYKAR?

The TPS7A1119PYKAR integrates an active pulldown circuit that engages a 120-Ω resistor between OUT and GND when the EN pin is driven low or during thermal shutdown. This discharges the output capacitance predictably-eliminating the need for external bleed resistors. Discharge time depends on C_OUT and parallel load resistance per t = 120·R_L/(120 + R_L)·C_OUT.

Can the TPS7A1119PYKAR operate without connecting the EN pin?

No-the EN pin must be actively driven. If enable functionality is not used, the EN pin must be tied to either the IN or BIAS rail-but only if that rail exceeds 0.9 V (V_HI threshold). Leaving EN floating risks undefined behavior. For robust operation, TI recommends connecting EN to BIAS (≥1.7 V) via a pullup resistor or direct connection.