Texas Instruments TLV71330PDQNT

Overview

TLV71330PDQNT from Texas Instruments is a capacitor-free, 150-mA, low-dropout linear regulator with fixed 3.0-V output, 1% accuracy, 230 mV dropout at full load, 50 µA quiescent current, and foldback overcurrent protection-designed for space-constrained portable devices requiring stable low-noise power.

For engineers reviewing the TLV71330PDQNT datasheet, TLV71330PDQNT pinout, TLV71330PDQNT application, or TLV71330PDQNT equivalent, key selection criteria include capacitor-free stability, thermal shutdown behavior, enable threshold compatibility with 1.8-V logic, and X2SON package thermal performance in battery-powered systems.

Technical Context

The TLV71330PDQNT employs a PMOS pass transistor architecture enabling ultra-low dropout and inherent reverse-current blocking. Its internal foldback current limit reduces power dissipation during overload by lowering output current as voltage collapses-critical for Li-ion battery protection.

It features an active pulldown circuit (denoted by "P" suffix) that discharges the output when disabled, preventing floating rail conditions. The device operates stably without output capacitance but maintains high PSRR (65 dB at 1 kHz) and low noise (73 µV_RMS) even with minimal 0.47-µF ceramic C_OUT.

Key Specifications

Pinout & Package

TLV71330PDQNT uses the 4-pin X2SON (DQN) package: 1.00 mm × 1.00 mm body, 0.35-mm pitch, thermally enhanced bottom-side exposed pad connected to GND.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLS850F3TLE and MCP1700T-3002E/MB, TLV71330PDQNT uniquely balances ultra-small X2SON size, capacitor-free operation, foldback protection, and active discharge-making it optimal for consumer portable devices where board area, battery life, and system-level safety are co-prioritized.

Availability

TLV71330PDQNT is available at Aetrix Electronics and suitable for wearable health sensors, Bluetooth Low Energy modules, and industrial wireless sensor nodes requiring stable component supply, long-lifecycle support, and guaranteed traceability.

Supply support for TLV71330PDQNT 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 connectivity technologies, with decades of LDO design expertise and broad automotive/industrial qualification.

The TLV713 series was developed specifically for portable and battery-powered applications demanding minimal solution size, low quiescent current, and robust fault handling-without external capacitors.

FAQ

Does TLV71330PDQNT require an output capacitor to operate?

No, TLV71330PDQNT is designed for stable operation with zero output capacitance-a key differentiator enabling ultra-compact layouts. However, adding a 0.47–1 µF ceramic capacitor improves load transient response and reduces output noise. The device remains stable with any value of C_OUT from 0 to 100 µF, per TI SBVS195F datasheet Section 7.3.

What is the maximum input voltage for TLV71330PDQNT?

The absolute maximum input voltage for TLV71330PDQNT is 6 V, but the recommended operating range is 1.4 V to 5.5 V per Section 6.3 of the datasheet. Operating above 5.5 V risks permanent damage; for 3.0-V output, VIN must exceed 3.23 V to maintain regulation under 150-mA load due to the 230-mV dropout.

How does the foldback current limit function in TLV71330PDQNT?

In TLV71330PDQNT, the foldback current limit reduces output current from ~180 mA to ~40 mA as output voltage drops below 0.5 V during overload or short-circuit. This limits power dissipation in the pass element, preventing thermal runaway and enabling safe recovery once the fault clears-detailed in Section 7.3.3 of the SBVS195F datasheet.

Is TLV71330PDQNT compatible with 1.8-V GPIO enable signals?

Yes, TLV71330PDQNT has a guaranteed enable threshold of V_EN(HI) ≥ 0.9 V and V_EN(LO) ≤ 0.4 V, making it fully compatible with standard 1.8-V CMOS logic outputs. No level shifter is needed-EN pin draws only 0.01 µA, minimizing loading on microcontroller GPIOs.

What thermal performance can be expected from TLV71330PDQNT in its X2SON package?

In the 4-pin X2SON (DQN) package, TLV71330PDQNT achieves R_θJB = 208.2°C/W when the thermal pad is soldered to a 1-in² PCB copper pour. At 150 mA and 3.23-V input (230-mV dropout), power dissipation is 34.5 mW-resulting in ~7.2°C junction-to-board rise. Full thermal data is in Section 6.4 of SBVS195F.