Texas Instruments TLV70329DBVR

Overview

TLV70329DBVR from Texas Instruments is a 2.9-V fixed-output, 300-mA low-dropout (LDO) linear regulator in a 5-pin SOT-23 package, featuring 2% output accuracy, 35 µA quiescent current, and 68 dB PSRR at 1 kHz. It delivers stable regulation for battery-powered RF subsystems in smartphones and ZigBee nodes where low noise and minimal input-to-output headroom are critical.

For engineers reviewing the TLV70329DBVR datasheet, TLV70329DBVR pinout, TLV70329DBVR application, or TLV70329DBVR equivalent, key selection considerations include dropout voltage at full load (260–375 mV), thermal shutdown threshold (165°C), enable pin logic thresholds (0.9 V high / 0.4 V low), and stability with ≥0.1 µF output capacitance.

Technical Context

The TLV70329DBVR uses a PMOS pass transistor to achieve low dropout and maintains regulation down to 2 V input while delivering 2.9 V output. Its precision band-gap reference and error amplifier ensure ±2% DC accuracy across –40°C to +125°C, with undervoltage lockout activating below 1.9 V input.

Functional modes include normal regulation, dropout (where VOUT = VIN – VDO), and current limit (320–860 mA), with automatic thermal cycling between 165°C shutdown and 145°C restart. The EN pin enables active-high control with <0.04 µA leakage and supports direct tie-to-IN for always-on operation.

Key Specifications

Pinout & Package

TLV70329DBVR is housed in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm, with exposed pad for thermal enhancement. Pin 4 is NC (no connection) and may be tied to GND to improve thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV70329DBVR, TPL720F29DBVR trades 150 mA current capacity for 10 µA lower I_Q and smaller size, while TPS7A0529PDQNR provides superior thermal performance in a different package-neither is pin-compatible, requiring layout revision.

Availability

TLV70329DBVR is available at Aetrix Electronics and suitable for smartphone RF front-ends, ZigBee® sensor nodes, and Bluetooth® audio earbuds requiring stable component supply across high-volume production cycles.

Supply support for TLV70329DBVR 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 headquartered in Dallas, Texas, designing and manufacturing analog and embedded processing chips for industrial, automotive, and consumer markets.

The TLV703 series is part of TI's precision low-power LDO portfolio, engineered specifically for battery-operated handheld equipment requiring high PSRR, low noise, and minimal dropout under dynamic load conditions.

FAQ

What is the minimum input voltage required for TLV70329DBVR to regulate 2.9 V output at 300 mA?

The TLV70329DBVR requires a minimum input voltage of 3.16 V to maintain regulation at 300 mA, based on its typical dropout voltage of 260 mV (2.9 V + 0.26 V). At worst-case 375 mV dropout, VIN must be ≥3.275 V. Operation below this threshold enters dropout mode, where VOUT tracks VIN minus VDO.

Can TLV70329DBVR operate without an input capacitor?

TLV70329DBVR does not require an input capacitor for stability, but TI recommends a 0.1–1 µF low-ESR ceramic capacitor from IN to GND to improve transient response, noise rejection, and ripple suppression-especially when source impedance exceeds 2 Ω or the device is remote from the power source.

What is the maximum junction temperature for continuous operation of TLV70329DBVR?

The TLV70329DBVR is rated for continuous operation up to +125°C junction temperature. Thermal shutdown activates at +165°C, and the device automatically recovers at +145°C. For reliable long-term operation, design should limit TJ to ≤125°C using appropriate PCB copper area and thermal vias per the DBV package thermal metrics (R_θJA = 254.1°C/W).

How does the enable pin (EN) function on TLV70329DBVR?

The EN pin on TLV70329DBVR is active-high: applying ≥0.9 V enables regulation, while ≤0.4 V forces shutdown with ground current reduced to 1 µA (typical). When EN is unused, it may be tied directly to IN for permanent enable-no external pull-up resistor is needed due to internal biasing.

Is TLV70329DBVR stable with a 0.1 µF X7R ceramic output capacitor?

Yes, TLV70329DBVR is explicitly designed to be stable with ≥0.1 µF effective output capacitance. An X7R ceramic capacitor rated at 0.1 µF meets this requirement if its effective capacitance-including voltage and temperature derating-remains ≥0.1 µF under operating conditions, and its ESR stays below 200 mΩ.