Texas Instruments TLV71325PQDBVRQ1

Overview

TLV71325PQDBVRQ1 from Texas Instruments is an AEC-Q100 Grade 1 qualified, capacitor-free 150-mA low-dropout (LDO) regulator with foldback current limit, delivering 2.5 V output at ±1% accuracy over –40°C to 125°C, 230 mV dropout at 150 mA, and 50 µA quiescent current - used in automotive head units and ADAS ECUs for stable microprocessor rail generation.

For engineers reviewing the TLV71325PQDBVRQ1 datasheet, TLV71325PQDBVRQ1 pinout, TLV71325PQDBVRQ1 application, or TLV71325PQDBVRQ1 equivalent, this page delivers verified technical context, exact pin functions, real-world automotive use cases, and validated alternative parts for functional replacement in safety-critical power rails.

Technical Context

The TLV71325PQDBVRQ1 employs a PMOS pass transistor enabling ultra-low dropout and inherent reverse-voltage protection via its body diode. Its internal UVLO circuit disables output until VIN exceeds minimum operating voltage, and active pulldown (120 Ω) ensures rapid discharge during shutdown.

It operates stably without output capacitors but supports 0.1–100 µF ceramic COUT for improved transient response. Foldback current limiting reduces output current as VOUT collapses, delivering ~40 mA into short-circuit while preventing thermal runaway under sustained fault conditions.

Key Specifications

Pinout & Package

TLV71325PQDBVRQ1 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 - optimized for compact automotive PCB layouts and enhanced thermal dissipation (R_θJB = 76.7°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV71325PQDBVRQ1, TLV71725PDQNR offers lower quiescent current but lacks automotive qualification and capacitor-free operation, while TLD72010ESV50 adds diagnostics and higher current at the expense of size, dropout, and design simplicity - making TLV71325PQDBVRQ1 optimal for cost- and space-constrained AEC-Q100-compliant LDO needs.

Availability

TLV71325PQDBVRQ1 is available at Aetrix Electronics and suitable for automotive head units, ADAS ECUs, and digital instrument clusters requiring stable component supply with guaranteed long-term lifecycle support and traceable sourcing.

Supply support for TLV71325PQDBVRQ1 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 specializing in analog and embedded processing technologies, with decades of automotive-grade power management innovation.

The TLV713P-Q1 product line delivers capacitor-free, low-IQ LDOs for automotive infotainment, ADAS, and body electronics - engineered to meet stringent AEC-Q100 Grade 1 requirements while minimizing solution size and standby power.

FAQ

What is the maximum input voltage rating for TLV71325PQDBVRQ1?

The absolute maximum input voltage for TLV71325PQDBVRQ1 is 6 V, but recommended operating range is 1.4 V to 5.5 V. Exceeding 6 V risks permanent damage per absolute maximum ratings. For automotive applications using 12-V battery-derived 5-V rails, ensure upstream filtering or clamping to maintain VIN ≤5.5 V under transients.

Does TLV71325PQDBVRQ1 require an output capacitor to operate stably?

No - TLV71325PQDBVRQ1 is explicitly designed for stable operation without any output capacitor, a key feature enabling minimal footprint in space-constrained automotive modules. However, adding ≥0.1 µF ceramic COUT improves load transient response and PSRR, especially at higher frequencies.

What is the purpose of the NC pin on TLV71325PQDBVRQ1?

Pin 4 (NC) on TLV71325PQDBVRQ1 is a no-connect terminal with no internal bond wire or silicon connection. It must remain unconnected - neither routed nor tied to ground or voltage. PCB layout should omit copper or vias at this location to prevent unintended coupling or mechanical stress.

How does the foldback current limit function in TLV71325PQDBVRQ1 during a short circuit?

Under short-circuit conditions, TLV71325PQDBVRQ1 reduces output current progressively as VOUT drops, limiting typical short-circuit current to ~40 mA. This foldback behavior lowers power dissipation in the PMOS pass device, delaying thermal shutdown and enabling safer fault containment compared to constant-current limit architectures.

Is TLV71325PQDBVRQ1 compatible with 1.8-V microcontroller GPIOs for enable control?

Yes - TLV71325PQDBVRQ1's EN pin has a guaranteed turn-on threshold of 0.9 V (min) and turn-off threshold of 0.4 V (max), making it fully compatible with 1.8-V logic outputs. A 1.8-V GPIO driving EN directly meets both thresholds with margin, enabling direct interface with MSP430 or other low-voltage MCUs without level-shifting.