Texas Instruments TLV70231QDSERQ1

Overview

TLV70231QDSERQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-qualified 300-mA low-dropout linear regulator with fixed 3.1-V output, 2% accuracy over –40°C to +125°C, 35 µA quiescent current, and 220 mV dropout at 300 mA - used for powering image sensors and microprocessor rails in camera modules and infotainment head units.

For engineers reviewing the TLV70231QDSERQ1 datasheet, TLV70231QDSERQ1 pinout, TLV70231QDSERQ1 application, or TLV70231QDSERQ1 equivalent, key selection considerations include its 0.1-µF minimum stable output capacitance, 68 dB PSRR at 1 kHz, thermal shutdown (165°C trip), undervoltage lockout (1.9 V), and enable-controlled shutdown with 1 µA quiescent current.

Technical Context

The TLV70231QDSERQ1 employs a PMOS pass transistor architecture enabling ultra-low dropout voltage scaling with load current, while maintaining regulation stability down to 0.1 µF effective output capacitance under bias and temperature derating. Its precision bandgap reference and error amplifier deliver 2% DC output accuracy across full automotive temperature range.

Functional modes include normal regulation (VIN > VOUT + VDO), dropout operation (VIN < VOUT + VDO), and current-limit protection (ICL = 320–860 mA), with integrated UVLO (1.9 V), thermal shutdown (165°C), and active-high enable logic (VEN(H) = 0.9 V, VEN(L) = 0.4 V).

Key Specifications

Pinout & Package

TLV70231QDSERQ1 is packaged in a 6-pin WSON (DSE) package measuring 1.5 mm × 1.5 mm with 0.5-mm pitch and wettable flanks - optimized for automated optical inspection and thermal performance in automotive modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV70231QDSERQ1, TLV70031QDSERQ1 trades lower quiescent current for reduced max load capability, while TPS7A0530PDBVR offers lower IQ but omits automotive qualification - making TLV70231QDSERQ1 the sole option meeting Grade 1 thermal, ESD, and reliability requirements at 300 mA/3.1 V.

Availability

TLV70231QDSERQ1 is available at Aetrix Electronics and suitable for automotive camera modules, image sensor power supplies, and microprocessor rails requiring stable component supply with AEC-Q100 compliance and long-term production continuity.

Supply support for TLV70231QDSERQ1 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 automotive qualification infrastructure.

The TLV702-Q1 product line was designed specifically for power-sensitive automotive subsystems - including camera modules, radar sensors, and infotainment peripherals - where low IQ, high PSRR, and AEC-Q100 Grade 1 reliability are mandatory.

FAQ

What is the output voltage tolerance of TLV70231QDSERQ1 over temperature?

The TLV70231QDSERQ1 delivers 3.1 V output with ±2% accuracy over the full AEC-Q100 Grade 1 temperature range of –40°C to +125°C ambient. This specification is guaranteed by precision bandgap and error amplifier design, and confirmed across production lots per TI's automotive qualification testing protocol. The 2% tolerance applies under all recommended operating conditions, including 0–300 mA load and 2–5.5 V input.

Does TLV70231QDSERQ1 require an input capacitor for stability?

No, TLV70231QDSERQ1 does not require an input capacitor for stability, but TI strongly recommends a 0.1–1 µF low-ESR ceramic capacitor between IN and GND. This improves transient response, reduces input ripple coupling, and mitigates voltage excursions caused by source impedance or fast load steps. Without it, line transient performance degrades significantly - especially when source impedance exceeds 2 Ω.

Can TLV70231QDSERQ1 operate with a 0.1-µF output capacitor?

Yes, TLV70231QDSERQ1 is explicitly designed to remain stable with an effective output capacitance of ≥0.1 µF, provided the capacitor maintains that value under operating bias voltage and temperature. This enables use of small-case X5R/X7R ceramics (e.g., 0201 or 0402) with appropriate derating - unlike many LDOs requiring ≥1 µF. Stability is verified per TI's characterization across –40°C to +125°C.

What protection features are integrated into TLV70231QDSERQ1?

TLV70231QDSERQ1 integrates thermal shutdown (trip at 165°C, reset at 145°C), output current limiting (320–860 mA), and undervoltage lockout (UVLO activates below 1.9 V). All protections are fully qualified per AEC-Q100 and operate independently of enable state. No external components are needed - these functions are implemented in silicon with automotive-grade process and layout hardening.

Is TLV70231QDSERQ1 pin-compatible with other TLV702-Q1 variants?

Yes, TLV70231QDSERQ1 shares identical 6-pin WSON (DSE) pinout and footprint with all TLV702-Q1 family members in the same package - including TLV70212QDSERQ1 through TLV70248QDSERQ1. Pin assignments (IN, GND, EN, OUT, NC, NC) and thermal pad configuration are identical, enabling drop-in voltage-output changes without PCB redesign.