Texas Instruments TLV70729DQNT

Overview

TLV70729DQNT from Texas Instruments is a 200-mA, low-quiescent-current (25 µA), low-noise LDO regulator with 2.9 V fixed output voltage in a 1-mm × 1-mm DQN (X2SON-4) package. It delivers 0.5% DC accuracy, 70 dB PSRR at 100 Hz, and stable operation with only 0.1 µF output capacitance-enabling compact, cost-effective power delivery for battery-powered RF subsystems in portable electronics.

For engineers reviewing the TLV70729DQNT datasheet, TLV70729DQNT pinout, TLV70729DQNT application, or TLV70729DQNT equivalent, key selection criteria include dropout voltage (≤325 mV @ 150 mA), shutdown current (1 µA), EN pin logic thresholds (VIH = 0.9 V, VIL = 0.4 V), thermal shutdown/overcurrent protection, and compatibility with ceramic capacitors down to 0.1 µF effective capacitance.

Technical Context

The TLV70729DQNT uses a PMOS pass transistor architecture enabling ultra-low dropout and high PSRR across 100 Hz–1 MHz. Its enable circuitry supports direct interfacing with low-voltage GPIOs (e.g., 1.8-V logic), and its internal current limit (240–450 mA) and thermal shutdown operate independently to ensure robust fault handling without external components.

Unlike standard LDOs requiring ≥1 µF output capacitance, this device achieves stability with 0.1 µF effective C_OUT, reducing board area and BOM cost while maintaining <±1.5% load regulation (0–150 mA) and <±1.5% line regulation over 2.0–5.5 V input range.

Key Specifications

Pinout & Package

Package: DQN (X2SON-4), 1.0 mm × 1.0 mm, 0.4 mm height, thermal pad on bottom.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLS850F2BTTA and MCP1700T-2902E/TT, the TLV70729DQNT offers the optimal balance of ultra-small size (1 mm²), precision (0.5%), and low-noise performance for space-constrained portable electronics-without over-specifying for automotive or ultra-low-I_Q use cases.

Availability

TLV70729DQNT is available at Aetrix Electronics and suitable for wearable electronics, smartphone peripherals, and industrial handheld devices requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for TLV70729DQNT 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 LDO design expertise for portable and industrial applications.

The TLV707 series was engineered specifically for power-sensitive portable RF systems-prioritizing low noise, minimal quiescent current, and ultra-small packaging without sacrificing protection or accuracy.

FAQ

What is the maximum input voltage rating for TLV70729DQNT?

The absolute maximum input voltage for TLV70729DQNT is 6.0 V. However, the recommended operating input voltage range is 2.0 V to 5.5 V. Exceeding 6.0 V may cause permanent damage. For reliable operation with margin, keep VIN ≤ 5.5 V under all conditions including transients and ripple.

Does TLV70729DQNT require an external pull-up resistor on the EN pin?

No, TLV70729DQNT does not require an external pull-up resistor on the EN pin. The EN pin has internal pull-down biasing. To enable the device, drive EN ≥ 0.9 V (e.g., directly from a GPIO); to disable, drive EN ≤ 0.4 V or leave floating (internal pull-down ensures shutdown). TLV70729DQNT remains off by default at power-up.

Can TLV70729DQNT operate with a 0.1 µF output capacitor in all conditions?

Yes-TLV70729DQNT is specified stable with ≥0.1 µF effective output capacitance, meaning the actual capacitance under operating bias voltage and temperature must be ≥0.1 µF. A 1.0 µF X5R 0402 capacitor typically provides ~0.15 µF effective capacitance at 2.9 V bias and 85°C, satisfying this requirement. TLV70729DQNT does not require ESR tuning.

What is the thermal performance of TLV70729DQNT in the DQN package?

TLV70729DQNT in the DQN (X2SON-4) package has a junction-to-ambient thermal resistance (R_θJA) of 208.1°C/W. With a 150-mA load and 3.3-V input (dropout ~250 mV), power dissipation is ~38 mW, resulting in ~8°C junction rise above ambient-well within the –40°C to +125°C operating range. Use of the thermal pad improves heat transfer significantly.

Is TLV70729DQNT pin-compatible with other TLV707 variants?

Yes-TLV70729DQNT shares identical pinout (OUT, GND, EN, IN), package (DQN-4), and footprint with all TLV707x and TLV707Px variants in the same package option. Voltage variants (e.g., TLV70712DQNT, TLV70733DQNT) and P-version parts (e.g., TLV70729PDQNT) are mechanically and electrically pin-compatible, though TLV70729PDQNT adds active pulldown on shutdown.