Texas Instruments TLV73310PQDRVRQ1

Overview

TLV73310PQDRVRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-qualified, capacitor-free 300-mA low-dropout linear regulator delivering 1.0 V output with 125 mV dropout at 300 mA (V_OUT = 3.3 V), ±1.4% output accuracy, and 34 µA quiescent current - deployed in camera modules and infotainment power rails.

For engineers reviewing the TLV73310PQDRVRQ1 datasheet, TLV73310PQDRVRQ1 pinout, TLV73310PQDRVRQ1 application, or TLV73310PQDRVRQ1 equivalent, key selection criteria include capacitor-free stability, thermal shutdown at 160°C, active output discharge via 120-Ω pulldown, foldback current limiting, and WSON-6 package compatibility with automotive PCB layout constraints.

Technical Context

The TLV73310PQDRVRQ1 uses 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 (where V_OUT = V_IN – V_DO), and disabled state with active pulldown. UVLO (rising threshold 1.4 V) and thermal shutdown (trip at 160°C, reset at 140°C) operate independently of enable status.

Key Specifications

Pinout & Package

TLV73310PQDRVRQ1 is housed in a 2.0-mm × 2.0-mm, 6-pin WSON (DRV) package with exposed thermal pad electrically tied to GND. The package supports high-density automotive PCB layouts and enhanced thermal dissipation via PCB copper area under the pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV73310PDBVRQ1, the TLV73310PQDRVRQ1 offers superior thermal performance and smaller footprint but requires WSON assembly capability; versus TLD73310TPQK, it trades safety features for lower quiescent current and capacitor-free simplicity - ideal for cost- and size-sensitive non-ASIL domains.

Availability

TLV73310PQDRVRQ1 is available at Aetrix Electronics and suitable for automotive camera modules, infotainment head-units, and navigation systems requiring stable component supply with AEC-Q100 qualification and long-term production support.

Supply support for TLV73310PQDRVRQ1 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 designing analog ICs, embedded processors, and connectivity solutions for automotive, industrial, and consumer markets.

The TLV733P-Q1 product line delivers ultra-low-I_Q, capacitor-free LDOs optimized for space-constrained, battery-sensitive automotive subsystems - including ADAS sensors, infotainment, and telematics.

FAQ

What is the minimum input voltage required for TLV73310PQDRVRQ1 to regulate 1.0 V output?

The TLV73310PQDRVRQ1 requires a minimum input voltage of 1.4 V per its recommended operating conditions. Below this, undervoltage lockout (UVLO) disables regulation. At 1.0 V output, the theoretical dropout is ~510 mV at 300 mA (per datasheet Table 6.5), meaning stable regulation begins at ~1.51 V input - but the device will not enable until VIN reaches 1.4 V (rising threshold). Always maintain VIN ≥ 1.4 V for guaranteed startup and regulation.

Does TLV73310PQDRVRQ1 require external capacitors to operate?

No - TLV73310PQDRVRQ1 is explicitly designed for capacitor-free operation and remains stable with zero external input or output capacitors. This eliminates inrush current at startup and saves board space. However, adding a 0.1–1 µF ceramic capacitor on the output improves load transient response, especially for slew rates >0.1 A/µs; a 0.1–1 µF capacitor on IN improves PSRR and line transients.

How does the active output discharge function work in TLV73310PQDRVRQ1?

When TLV73310PQDRVRQ1 is disabled (EN < 0.35 V), an internal 120-Ω pulldown resistor connects OUT to GND. This actively discharges any output capacitance, preventing floating voltages or back-powering of downstream circuitry. Discharge time depends on C_OUT and parallel load resistance per τ = 120·R_L/(120 + R_L)·C_OUT. No external components are needed - the function is fully integrated.

What is the thermal shutdown behavior of TLV73310PQDRVRQ1?

TLV73310PQDRVRQ1 triggers thermal shutdown at approximately 160°C junction temperature, disabling the output to halt power dissipation. Once the die cools to ~140°C, regulation automatically resumes. This hysteresis prevents oscillation. The device is rated for continuous operation up to 150°C junction - sustained shutdown cycling indicates excessive (VIN – VOUT) × I_OUT power dissipation and requires thermal redesign (e.g., larger copper area, lower ambient).

Is TLV73310PQDRVRQ1 pin-compatible with other TLV733P-Q1 variants?

Yes - all TLV733P-Q1 devices in the WSON-6 (DRV) package share identical pinout, including TLV73310PQDRVRQ1 (1.0 V), TLV73318PQDRVRQ1 (1.8 V), and TLV73333PQDRVRQ1 (3.3 V). The only differences are fixed output voltage and corresponding electrical specs (e.g., dropout, accuracy bands). PCB layout and firmware enable logic remain unchanged across the family.