Texas Instruments TLV70030QDCKRQ1

Overview

TLV70030QDCKRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-qualified 3.0 V fixed-output, 200-mA low-dropout linear regulator with 2% DC accuracy, 31 μA quiescent current, and 175 mV dropout voltage at 200 mA - designed for second-stage power supply in battery-connected automotive modules requiring stable low-noise bias under wide temperature (–40°C to 125°C) and input (2 V to 5.5 V) ranges.

For engineers reviewing the TLV70030QDCKRQ1 datasheet, TLV70030QDCKRQ1 pinout, TLV70030QDCKRQ1 application, or TLV70030QDCKRQ1 equivalent, key selection considerations include its SC70-5 (DCK) package footprint, enable-controlled shutdown (1 μA), 68 dB PSRR at 1 kHz, stability with ≥0.1 μF output capacitance, and thermal/overcurrent protection - all validated for automotive safety-critical subsystems.

Technical Context

The TLV70030QDCKRQ1 uses a PMOS pass transistor architecture enabling low dropout and high PSRR while maintaining stability with minimal 0.1 μF ceramic output capacitance. Its precision band-gap reference and error amplifier deliver 2% output accuracy across –40°C to 125°C ambient, with undervoltage lockout (UVLO) triggering at 1.9 V to prevent erratic startup.

Functional modes include active regulation (EN > 0.9 V), shutdown (EN < 0.4 V, ground current ≤2.5 μA), and fault recovery via thermal cycling (shutdown at 160°C, restart at 140°C). Internal current limit (220–550 mA) and latch-up immunity (100 mA per AEC-Q100 Level I) ensure robust operation in transient-loaded automotive environments.

Key Specifications

Pinout & Package

TLV70030QDCKRQ1 is housed in a 5-pin SC70-5 (DCK) package measuring 2.00 mm × 1.25 mm, optimized for compact automotive PCB layouts with thermal pad grounding capability via Pin 4 (NC).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV70030QDCKRQ1, TLV70033QDCKRQ1 offers identical performance at 3.3 V for direct voltage-scaling upgrades, while TPS78030QDSERQ1 trades 50 mA output capacity for 62× lower shutdown current - making each alternative optimal only within distinct automotive power budget boundaries.

Availability

TLV70030QDCKRQ1 is available at Aetrix Electronics and suitable for automotive body control modules, ADAS camera power supplies, telematics control units, and electric power steering sensor interfaces requiring stable component supply across extended vehicle production lifecycles.

Supply support for TLV70030QDCKRQ1 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 product development and manufacturing expertise.

The TLV700xx-Q1 family was engineered specifically for automotive second-stage power conversion - delivering low-noise, low-I_Q, and AEC-Q100-compliant regulation in compact packages for safety-critical electronic control units.

FAQ

What is the maximum input voltage rating for TLV70030QDCKRQ1?

The absolute maximum input voltage for TLV70030QDCKRQ1 is 6 V. Operation above this level risks permanent damage. For reliable continuous use, TI specifies a recommended input range of 2 V to 5.5 V - ensuring proper regulation, thermal margin, and UVLO functionality across automotive battery conditions including cold-crank and load-dump transients.

Does TLV70030QDCKRQ1 require an input capacitor?

While TLV70030QDCKRQ1 does not require an input capacitor for stability, TI recommends a 0.1–1 μF low-ESR ceramic capacitor between IN and GND. This improves transient response, reduces noise coupling from upstream sources, and mitigates instability caused by high source impedance (>2 Ω), especially in long-trace automotive wiring harnesses feeding the regulator.

Can TLV70030QDCKRQ1 operate with a 0.1 μF output capacitor?

Yes - TLV70030QDCKRQ1 is explicitly designed to remain stable with an effective output capacitance of ≥0.1 μF. However, this refers to the capacitance *under operating bias and temperature*, not the nominal rated value. A 0.1 μF X7R capacitor may derate to <0.07 μF at 3.0 V and 125°C; therefore, a 1.0 μF X5R/X7R part is typically used to guarantee ≥0.1 μF effective capacitance across full conditions.

What is the thermal shutdown behavior of TLV70030QDCKRQ1?

TLV70030QDCKRQ1 activates thermal shutdown at approximately 160°C junction temperature and automatically recovers when the junction cools to ~140°C. This hysteresis prevents oscillation near trip point. Continuous cycling indicates excessive power dissipation - designers must verify junction temperature using R_θJA = 307.6°C/W and ambient conditions to ensure TJ ≤125°C for reliable operation.

Is TLV70030QDCKRQ1 pin-compatible with other TLV700xx-Q1 variants?

Yes - all TLV700xx-Q1 devices in the SC70-5 (DCK) package, including TLV70030QDCKRQ1 and TLV70033QDCKRQ1, share identical pin configuration (IN, GND, EN, NC, OUT), footprint, and thermal characteristics. This enables voltage-scaling design reuse without layout changes, provided the downstream circuit tolerates the selected output voltage.