Texas Instruments TLV71312PQDBVRQ1

Overview

TLV71312PQDBVRQ1 from Texas Instruments is an AEC-Q100 Grade 1 qualified, capacitor-free 150-mA low-dropout linear regulator with 1.2-V fixed output, 230-mV dropout at 150 mA, ±1% DC accuracy over –40°C to 125°C, and 50-µA quiescent current - designed for automotive microprocessor rails and ADAS ECUs where space-constrained, low-noise, and stable operation without output capacitance are critical.

For engineers reviewing the TLV71312PQDBVRQ1 datasheet, TLV71312PQDBVRQ1 pinout, TLV71312PQDBVRQ1 application, or TLV71312PQDBVRQ1 equivalent, key selection considerations include its foldback current limit (175 mA typ), active output discharge via 120-Ω pulldown, UVLO behavior, thermal shutdown thresholds (158°C trip / 140°C release), and compatibility with 0–100 µF output capacitors in SOT-23-5 packaging.

Technical Context

The TLV71312PQDBVRQ1 employs a PMOS pass transistor enabling ultra-low dropout and inherent reverse-voltage blocking. Its internal control loop ensures stability with or without external capacitors - eliminating mandatory C_OUT while preserving transient response when 0.1–100 µF ceramic capacitors are added.

Functional modes include normal regulation (VIN ≥ VOUT + V_DO, EN > 0.9 V), dropout operation (VIN < VOUT + V_DO but > 1.4 V), and disabled state (EN < 0.4 V or T_J > 158°C), with foldback current limiting reducing output current as V_OUT collapses during overload.

Key Specifications

Pinout & Package

TLV71312PQDBVRQ1 is housed in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm with exposed thermal pad electrically tied to GND - requiring PCB thermal relief via soldered GND plane connection for optimal R_θJB = 76.7°C/W performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV71312PQDBVRQ1, TLV71712PDQNR offers lower quiescent current but sacrifices automotive qualification and capacitor-free operation, while TLS850F1EJ adds system-level functions at the cost of higher dropout and larger footprint - making TLV71312PQDBVRQ1 optimal for space- and reliability-constrained 1.2-V automotive point-of-load regulation.

Availability

TLV71312PQDBVRQ1 is available at Aetrix Electronics and suitable for automotive head units, ADAS ECUs, and microprocessor rails requiring stable component supply with AEC-Q100 compliance, extended temperature support, and long-term lifecycle assurance.

Supply support for TLV71312PQDBVRQ1 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 specializing in analog and embedded processing technologies, with leadership in automotive-grade power management ICs and broad design-in support across Tier 1 suppliers.

The TLV713P-Q1 product line delivers capacitor-free, low-IQ LDOs optimized for automotive infotainment, ADAS, and body electronics - emphasizing reliability, small solution size, and robust fault protection under harsh operating conditions.

FAQ

What is the maximum input voltage rating for TLV71312PQDBVRQ1?

The absolute maximum input voltage for TLV71312PQDBVRQ1 is 6 V, though recommended operation is limited to 1.4 V to 5.5 V. Exceeding 6 V risks permanent damage per the Absolute Maximum Ratings table. Operation above 5.5 V is not guaranteed and may degrade long-term reliability even if within the 6-V stress limit.

Does TLV71312PQDBVRQ1 require an output capacitor to maintain stability?

No, TLV71312PQDBVRQ1 is explicitly designed for stable operation with 0 µF output capacitance. Its internal compensation eliminates the need for external C_OUT, though adding 0.1–100 µF ceramic capacitors improves load transient response and PSRR - especially at higher frequencies.

What is the purpose of the NC pin on TLV71312PQDBVRQ1?

Pin 4 (NC) on TLV71312PQDBVRQ1 is a no-connect terminal with no internal bond wire or circuit connection. It must remain unconnected on the PCB - neither routed nor tied to GND, V_IN, or any other net - to avoid mechanical stress or unintended coupling effects.

How does the foldback current limit behave in TLV71312PQDBVRQ1 during a short circuit?

During output short-circuit, TLV71312PQDBVRQ1 reduces current from 175 mA nominal to ~40 mA typical, lowering power dissipation and delaying thermal shutdown. This foldback action protects both the LDO and downstream circuitry while allowing continued monitoring of fault conditions before thermal cycling begins.

Can TLV71312PQDBVRQ1 be used with a 1.8-V input supply?

Yes - TLV71312PQDBVRQ1 supports inputs as low as 1.4 V, so 1.8-V operation is fully within specification. At 1.8-V input and 1.2-V output, the headroom is 600 mV, well above the 230-mV dropout at 150 mA, ensuring stable regulation even under full load and high temperature.