Texas Instruments TLV73311PQDRVRQ1

Overview

TLV73311PQDRVRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-qualified, capacitor-free low-dropout linear regulator delivering 300 mA output current with 1.1 V fixed output voltage, 125 mV dropout at 300 mA (V_OUT = 3.3 V), ±1.4% output accuracy, and 34 µA quiescent current - used in camera modules and infotainment power rails.

For engineers reviewing the TLV73311PQDRVRQ1 datasheet, TLV73311PQDRVRQ1 pinout, TLV73311PQDRVRQ1 application, or TLV73311PQDRVRQ1 equivalent, key selection criteria include capacitor-free stability, thermal shutdown at 160°C, active output discharge, foldback current limiting, and WSON-6 package compatibility with space-constrained automotive PCB layouts.

Technical Context

The TLV73311PQDRVRQ1 employs a PMOS pass transistor architecture enabling ultra-low dropout and inherent reverse-current blocking. Its capacitor-free control loop eliminates mandatory external output capacitance while maintaining stability across –40°C to +150°C junction temperature.

Functional modes include normal regulation, dropout operation (with degraded transient response), and disabled state with active 120-Ω pulldown for rapid output discharge. UVLO (rising threshold 1.4 V) and thermal shutdown (trip at 160°C, reset at 140°C) are integrated for robust automotive fault handling.

Key Specifications

Pinout & Package

TLV73311PQDRVRQ1 uses the 2.0-mm × 2.0-mm WSON-6 (DRV) package with exposed thermal pad electrically tied to GND. The package supports high-density placement and enhanced thermal dissipation via PCB ground plane connection.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV73311PDBVRQ1, the TLV73311PQDRVRQ1 offers superior thermal performance and smaller footprint for automated SMT lines; versus TLD73311EPV50, it trades diagnostic capability for simplicity, lower quiescent current, and capacitor-free flexibility in non-ASIL designs.

Availability

TLV73311PQDRVRQ1 is available at Aetrix Electronics and suitable for automotive camera modules, infotainment head-units, and ADAS sensor hubs requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant traceability.

Supply support for TLV73311PQDRVRQ1 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 system solutions for industrial, automotive, and consumer markets.

The TLV733P-Q1 product line delivers ultra-small, low-I_Q, capacitor-free LDOs targeting space- and power-constrained automotive subsystems such as camera modules, infotainment, and navigation systems.

FAQ

What is the maximum input voltage rating for TLV73311PQDRVRQ1?

The absolute maximum input voltage for TLV73311PQDRVRQ1 is 6.0 V. Operation above this level risks permanent damage. The recommended operating range is 1.4 V to 5.5 V, which ensures proper regulation, UVLO avoidance, and thermal stability across the full AEC-Q100 Grade 1 temperature range. Exceeding 5.5 V may trigger undervoltage lockout or degrade long-term reliability.

Does TLV73311PQDRVRQ1 require an output capacitor to operate stably?

No, TLV73311PQDRVRQ1 is designed for capacitor-free operation and remains stable without any output capacitor. Its internal control loop guarantees stability across all load conditions and temperatures. However, adding a 0.1–1 µF ceramic capacitor improves load transient response - especially for fast slew-rate loads (>0.1 A/µs) - and is recommended for camera sensor or processor applications demanding tight voltage regulation.

What is the purpose of the NC pins on TLV73311PQDRVRQ1?

TLV73311PQDRVRQ1 has two NC (no internal connection) pins - Pin 2 and Pin 5 - in its WSON-6 (DRV) package. These are unconnected die pads with no electrical function. They must be left floating or connected to GND per TI's layout guidelines to maintain thermal and mechanical integrity. Routing signals or power to these pins will not affect operation but violates recommended PCB design practices and may compromise thermal performance.

How does the active output discharge feature work in TLV73311PQDRVRQ1?

When TLV73311PQDRVRQ1 is disabled (EN < 0.35 V), an internal 120-Ω pulldown resistor connects the OUT pin to GND. This actively discharges external output capacitance, ensuring rapid voltage decay and preventing floating or undefined states during power-down sequencing. Discharge time depends on C_OUT and parallel load resistance, per τ = 120·R_L/(120 + R_L)·C_OUT. This feature is critical for clean power sequencing in multi-rail automotive systems.

Is TLV73311PQDRVRQ1 pin-compatible with other TLV733P-Q1 variants?

Yes, TLV73311PQDRVRQ1 shares identical pinout and package (WSON-6) with all other TLV733P-Q1 devices in the DRV variant, including TLV73318PQDRVRQ1 and TLV73333PQDRVRQ1. The only difference is the factory-trimmed fixed output voltage. This enables drop-in replacement across the family for design reuse - provided input voltage, load current, and thermal constraints remain within specification limits for the selected V_OUT.