Texas Instruments TLV71712PDQNT

Overview

TLV71712PDQNT from Texas Instruments is a 150-mA, low-dropout linear regulator with fixed 1.2-V output, 215-mV dropout at full load, 0.5% typical output accuracy, 35-µA quiescent current, and foldback current limiting. It delivers stable power to ultra-low-power microcontrollers and RF sections in space-constrained portable electronics.

For engineers reviewing the TLV71712PDQNT datasheet, TLV71712PDQNT pinout, TLV71712PDQNT application, or TLV71712PDQNT equivalent, key selection criteria include dropout voltage at 150 mA, active pulldown capability, stability with 0.1-µF ceramic output capacitance, UVLO threshold of 1.6 V, and X2SON-4 (1 mm × 1 mm) package thermal performance.

Technical Context

The TLV71712PDQNT uses a PMOS pass transistor enabling very 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 features an active-high enable pin with 0.9-V turn-on threshold and 0.4-V shutdown threshold, supporting direct interfacing with low-voltage GPIOs. An internal undervoltage lockout (UVLO = 1.6 V) prevents regulation until input voltage stabilizes.

Key Specifications

Pinout & Package

TLV71712PDQNT is housed in a 4-pin X2SON (DQN) package measuring 1.00 mm × 1.00 mm with 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 TLS850F0TESK and MCP1700T-1202E/TT, TLV71712PDQNT uniquely balances ultra-small size, low dropout, active discharge, and precision - making it optimal for portable, battery-constrained designs where every µA and mm² matters.

Availability

TLV71712PDQNT is available at Aetrix Electronics and suitable for wearable health monitors, BLE beacon nodes, industrial sensor transmitters, and smart card reader modules requiring stable component supply across long production lifecycles.

Supply support for TLV71712PDQNT 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 ICs, embedded processors, and digital signal solutions for industrial, automotive, and personal electronics markets.

The TLV717P series was engineered specifically for portable, battery-powered applications demanding ultra-low quiescent current, small footprint, and robust transient response - targeting next-generation wearables, IoT endpoints, and compact medical devices.

FAQ

What is the minimum input voltage required for TLV71712PDQNT to regulate 1.2 V?

The TLV71712PDQNT requires a minimum input voltage of 1.415 V to maintain regulation - calculated as 1.2 V + 215 mV dropout at 150 mA. Below this, the device enters dropout mode where output tracks input minus R_DS(on) drop. Input must also exceed the 1.6-V UVLO threshold for initial startup.

Does TLV71712PDQNT support automatic discharge of the output capacitor when disabled?

Yes, TLV71712PDQNT includes an internal 120-Ω active pulldown resistor on the OUT pin. When the EN pin is driven below 0.4 V, this resistor rapidly discharges external output capacitance - eliminating residual voltage that could interfere with power sequencing or cause latch-up in downstream logic.

Can TLV71712PDQNT operate stably with a 0.1-µF output capacitor?

Yes, TLV71712PDQNT is explicitly designed to remain stable with an effective output capacitance of 0.1 µF or greater. This refers to the capacitance value *under operating bias and temperature*, not the nominal rated value - so a 1-µF X5R/X7R ceramic capacitor derated to ≥0.1 µF at 1.2 V and 85°C is recommended for robustness.

What is the purpose of the foldback current limit in TLV71712PDQNT?

The foldback current limit in TLV71712PDQNT reduces output current as output voltage collapses - e.g., during short-circuit events. Instead of delivering 350 mA into a dead short, it throttles to ~40 mA, drastically lowering power dissipation [(VIN – VOUT) × ILIMIT] in the PMOS pass element and preventing thermal runaway.

Is TLV71712PDQNT compatible with 1.2-V GPIO enable signals?

Yes, TLV71712PDQNT has a low 0.9-V enable threshold (minimum), allowing direct connection to 1.2-V or 1.8-V microcontroller GPIOs without level-shifting circuitry. The EN pin draws only 0.01 µA, imposing negligible load on the driving source.