Texas Instruments TLV70729PDQNT

Overview

TLV70729PDQNT from Texas Instruments is a 200-mA, low-noise, low-quiescent-current (25 µA) LDO regulator with fixed 2.9-V output, designed for power-sensitive portable electronics. It delivers ±0.5% DC accuracy, supports 0.1-µF minimum output capacitance, and features high PSRR (70 dB at 100 Hz), thermal shutdown, overcurrent protection, and active pulldown (120-Ω) for rapid output discharge in shutdown mode - ideal for battery-powered RF subsystems.

For engineers reviewing the TLV70729PDQNT datasheet, TLV70729PDQNT pinout, TLV70729PDQNT application, or TLV70729PDQNT equivalent, key selection criteria include dropout voltage at 150 mA (220–270 mV), shutdown current (1 µA), EN pin logic thresholds (VIH = 0.9 V, VIL = 0.4 V), and stability with ultra-small ceramic capacitors - critical for space-constrained wearable and mobile designs.

Technical Context

The TLV70729PDQNT uses a PMOS pass transistor architecture enabling low dropout and reverse-voltage tolerance via its intrinsic body diode. Its internal bandgap reference and error amplifier deliver tight regulation across –40°C to +125°C junction temperature, with load regulation of ≤20 mV from 0–150 mA.

Unlike standard LDOs, the TLV707P variant (indicated by 'P' in the part number) integrates an active pulldown circuit that discharges the output during shutdown - a feature absent in the base TLV707 series - making it suitable for systems requiring fast rail collapse and zero-output hold-up.

Key Specifications

Pinout & Package

TLV70729PDQNT is housed in a 1-mm × 1-mm DQN (X2SON-4) package with wettable flank terminations for automated optical inspection. The thermal pad is electrically connected to GND and must be soldered to a PCB thermal plane for optimal thermal performance (R_θJA = 208.1°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLS850F2ELVSA1 and TPS7A0529PDQNR, TLV70729PDQNT uniquely balances ultra-low IQ, fast pulldown, and minimal capacitor requirements - making it optimal for consumer portable RF systems where board space, startup/shutdown timing, and noise sensitivity are co-critical.

Availability

TLV70729PDQNT is available at Aetrix Electronics and suitable for wearable electronics, smartphone RF subsystems, and wireless gaming peripherals requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for TLV70729PDQNT 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.

The TLV707 series belongs to TI's low-power linear regulator product line, engineered specifically for portable and battery-operated devices demanding ultra-low quiescent current, small footprint, and robust transient performance.

FAQ

What is the dropout voltage of TLV70729PDQNT at 150 mA load?

The dropout voltage of TLV70729PDQNT is 220–270 mV at 150 mA output current and 2.9-V nominal output, measured under recommended operating conditions (T_J = –40°C to +85°C). This value reflects the minimum headroom required between input and output to maintain regulation - enabling reliable operation from a 3.0-V Li-ion cell even at end-of-discharge.

Does TLV70729PDQNT include an active pulldown circuit?

Yes, TLV70729PDQNT includes an integrated active pulldown circuit (120-Ω resistor between OUT and GND) activated during shutdown. This feature rapidly discharges the output capacitor, eliminating residual voltage that could cause latch-up or false wake events - a capability confirmed in the TLV707P family datasheet and distinct from the non-P TLV707 variants.

What is the minimum output capacitor required for TLV70729PDQNT stability?

TLV70729PDQNT is stable with an effective output capacitance of 0.1 µF - meaning the actual capacitance after accounting for DC bias and temperature derating must meet or exceed this value. A 0.22-µF X5R 0402 ceramic capacitor is commonly used to ensure margin across voltage and temperature ranges.

What are the EN pin logic thresholds for TLV70729PDQNT?

The EN pin of TLV70729PDQNT has a high-level input threshold (VIH) of 0.9 V minimum and a low-level input threshold (VIL) of 0.4 V maximum. This allows direct interfacing with low-voltage GPIOs (e.g., 1.8-V or 2.5-V logic families) without level-shifting, simplifying host processor integration.

Is TLV70729PDQNT suitable for automotive applications?

TLV70729PDQNT is not AEC-Q100 qualified and is specified for commercial/industrial temperature range (–40°C to +125°C junction), not extended automotive grades. For automotive use, consider TI's TLS850F2ELVSA1 or other AEC-Q100-certified LDOs - TLV70729PDQNT is intended for consumer portable electronics where qualification is not required.