Texas Instruments TPS7A6033QKVURQ1

Overview

TPS7A6033QKVURQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-grade LDO regulator delivering fixed 3.3 V output at up to 300 mA, with 25 µA typical quiescent current, 7–40 V input range, and integrated programmable power-on-reset functionality. It operates in automotive head units and instrument clusters where low standby power and transient resilience are critical.

For engineers reviewing the TPS7A6033QKVURQ1 datasheet, TPS7A6033QKVURQ1 pinout, TPS7A6033QKVURQ1 application, or TPS7A6033QKVURQ1 equivalent, this device supports cold-crank operation via low-voltage tracking, enables robust system initialization with capacitor-programmable reset delay (100 pF–100 nF), and provides fault protection including thermal shutdown and short-circuit current limiting.

Technical Context

The TPS7A6033QKVURQ1 implements a monolithic PMOS pass transistor architecture with internal charge-pump biasing for stable regulation across its 7–40 V input range. Its programmable reset delay uses an external capacitor on the RDELAY pin to set tPOR from 300 µs (100 pF) to 300 ms (100 nF), while the open-drain nRST output asserts after delay completion when VOUT exceeds 93% of 3.3 V.

It integrates undervoltage lockout (VIN-UVLO = 3.16 V), thermal shutdown (TSHUTDOWN = 165 °C, THYST = 10 °C), and overcurrent protection (ICL = 350–1000 mA). The device enters ultra-low-power sleep mode (<2 µA) only when disabled - but TPS7A6033QKVURQ1 lacks an ENABLE pin and is always active upon valid VIN.

Key Specifications

Pinout & Package

TPS7A6033QKVURQ1 is packaged in a 5-pin TO-252 (KVU/DPAK) with exposed thermal pad, measuring 6.10 mm × 6.60 mm. The package supports high-power dissipation in automotive under-hood environments and requires soldering the thermal pad to a PCB copper pour for optimal thermal performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS7A6033QKVURQ1, TPS7B6733QPWPRQ1 offers identical automotive qualification and output specs but removes programmability for reduced BOM count, while TLV73333PDPWR sacrifices automotive compliance and protection features for lower cost in benign environments.

Availability

TPS7A6033QKVURQ1 is available at Aetrix Electronics and suitable for automotive head units, hybrid instrument clusters, and center information displays requiring stable component supply across extended temperature and lifecycle demands.

Supply support for TPS7A6033QKVURQ1 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 deep expertise in automotive power management ICs.

The TPS7A6x-Q1 product line delivers high-reliability, low-I_Q LDOs for automotive infotainment and body electronics, engineered specifically to survive harsh vehicle electrical environments including load dump, cold crank, and thermal cycling.

FAQ

What is the maximum input voltage transient the TPS7A6033QKVURQ1 can withstand?

The TPS7A6033QKVURQ1 has an absolute maximum input voltage rating of 45 V for durations under 480 ms, enabling robust operation during automotive load-dump events without external clamping components. This rating is validated per AEC-Q100 stress test conditions and applies to both VIN and RDELAY pins. Sustained operation above 40 V is not recommended, and the device regulates normally within its 7–40 V operating range.

Does the TPS7A6033QKVURQ1 have an enable pin?

No, the TPS7A6033QKVURQ1 does not include an ENABLE pin. It belongs to the TPS7A60-Q1 family, which is always active when VIN is within specification. In contrast, the pin-compatible TPS7A6133QKVURQ1 variant adds an ENABLE input. The TPS7A6033QKVURQ1 uses RDELAY and nRST for reset control only - power state is determined solely by VIN presence and UVLO thresholds.

How is the reset delay programmed on the TPS7A6033QKVURQ1?

The reset delay on the TPS7A6033QKVURQ1 is programmed by connecting an external capacitor (CDLY) between the RDELAY pin and GND. Delay time follows tPOR ≈ CDLY × 1 µA / 3.3 V, yielding 300 µs with 100 pF and 300 ms with 100 nF. If CDLY is omitted, the internal 250 µs preset delay activates. The RDELAY pin sources a precise 1 µA (typ) charging current and trips nRST when voltage reaches 3.3 V.

What thermal performance can be expected from the TPS7A6033QKVURQ1 in TO-252 package?

In its KVU (TO-252-5) package, the TPS7A6033QKVURQ1 has a junction-to-ambient thermal resistance (RθJA) of 26.9 °C/W when mounted on a 2-layer PCB with 1-in² 2-oz copper thermal pad. With proper thermal pad soldering and airflow, it sustains 300 mA output at 125°C ambient. Thermal shutdown triggers at 165°C junction temperature with 10°C hysteresis, ensuring safe recovery after overload events.

Is the TPS7A6033QKVURQ1 compatible with ceramic output capacitors?

Yes, the TPS7A6033QKVURQ1 is explicitly designed for stability with low-ESR ceramic output capacitors - ≥10 µF recommended. Unlike older LDOs requiring tantalum or aluminum electrolytics, its internal compensation eliminates need for series ESR, reducing board area, improving reliability, and enabling fast transient response. Stability is verified across 0.5–100 µF and ESR <100 mΩ.