Texas Instruments TLV717285PDQNT

Overview

TLV717285PDQNT from Texas Instruments is a 150-mA, low-dropout linear regulator with 2.85 V fixed output, 215 mV dropout at full load, 0.5% typical accuracy, and active pulldown for rapid output discharge. It delivers stable regulation in space-constrained portable electronics where low quiescent current (35 µA) and foldback current limiting are critical.

For engineers reviewing the TLV717285PDQNT datasheet, TLV717285PDQNT pinout, TLV717285PDQNT application, or TLV717285PDQNT equivalent, key selection criteria include dropout performance under 150 mA load, stability with ≥0.1 µF ceramic output capacitance, enable threshold compatibility with low-voltage GPIOs, and thermal behavior in the 1-mm × 1-mm X2SON package.

Technical Context

The TLV717285PDQNT uses a PMOS pass transistor enabling ultra-low dropout and inherent reverse-voltage protection via its body diode. Its foldback current limit initiates near 350 mA and reduces short-circuit current to 40 mA, minimizing power dissipation during faults.

It integrates undervoltage lockout (UVLO = 1.6 V), active-high enable with 0.9 V turn-on threshold, and an internal 120 Ω pulldown resistor for fast output discharge during shutdown - all operating across –40°C to +85°C junction temperature.

Key Specifications

Pinout & Package

TLV717285PDQNT is housed in a 1.00 mm × 1.00 mm, 4-pin X2SON (DQN) package with wettable flanks and an exposed thermal pad connected to GND for enhanced thermal performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLS850F28V50 and MCP1703T-2852E/MB, TLV717285PDQNT uniquely combines ultra-small 1-mm² footprint, foldback current limiting, and active pulldown - making it optimal for space- and safety-critical portable applications where input voltage headroom is limited and rapid rail control is required.

Availability

TLV717285PDQNT is available at Aetrix Electronics and suitable for wireless earbuds, smart wearables, and portable medical sensors requiring stable component supply, consistent parametric performance, and long-term production continuity.

Supply support for TLV717285PDQNT 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 company designing analog and embedded processing solutions for industrial, automotive, and personal electronics markets.

The TLV717P series was developed specifically for portable, battery-powered devices demanding ultra-low quiescent current, small footprint, and robust fault protection - targeting RF-sensitive applications like Bluetooth audio and wireless sensing.

FAQ

What is the maximum input voltage rating for TLV717285PDQNT?

The absolute maximum input voltage for TLV717285PDQNT is 6 V, but the recommended operating range is 1.7 V to 5.5 V. Exceeding 5.5 V may trigger internal protection or degrade reliability. The device includes undervoltage lockout (UVLO) that holds output off until VIN rises above 1.6 V, ensuring clean startup from weak or recovering sources.

Does TLV717285PDQNT require an input capacitor for stability?

No, TLV717285PDQNT does not require an input capacitor for stability, but TI strongly recommends a 0.1–1 µF low-ESR ceramic capacitor between IN and GND. This improves transient response, reduces input ripple coupling, and mitigates voltage spikes caused by source impedance or PCB trace inductance - especially critical when the LDO is remote from its power source.

How does the foldback current limit function in TLV717285PDQNT?

In TLV717285PDQNT, foldback current limiting reduces output current as output voltage drops - initiating near 350 mA and decreasing to ~40 mA under short-circuit conditions. This prevents excessive power dissipation in the PMOS pass device during faults. Unlike fixed current limits, foldback lowers both current and voltage stress, improving thermal safety without external components.

Can TLV717285PDQNT operate with a 0.1 µF output capacitor?

Yes, TLV717285PDQNT is stable with an effective output capacitance of 0.1 µF or greater - meaning the actual capacitance under operating bias and temperature must meet this value. A 0.1 µF rated X5R/X7R ceramic capacitor is sufficient if derating is minimal; however, TI recommends 1 µF for robustness across voltage and temperature extremes in production designs.

What is the purpose of the thermal pad on the TLV717285PDQNT package?

The exposed thermal pad on the TLV717285PDQNT's X2SON package must be soldered to the PCB ground plane to achieve specified thermal performance: R_θJB = 330°C/W. Without this connection, junction temperature rise increases significantly - potentially exceeding the 85°C max operating limit under 150 mA load. Proper pad layout and solder coverage are essential for reliable operation.