Texas Instruments TPS7B8233EPWPRQ1

Overview

TPS7B8233EPWPRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive LDO regulator delivering 300 mA output at fixed 3.3 V with 2% accuracy, 700 mV max dropout at 200 mA, 2.7 µA typical quiescent current at light load, and operation across 3 V to 40 V input - designed for always-on battery-connected systems such as body control modules and telematics units.

For engineers reviewing the TPS7B8233EPWPRQ1 datasheet, TPS7B8233EPWPRQ1 pinout, TPS7B8233EPWPRQ1 application, or TPS7B8233EPWPRQ1 equivalent, key selection criteria include ultra-low IQ (300 nA shutdown / 2.7 µA light-load), 45 V transient tolerance, thermal shutdown with 20°C hysteresis, grade-1 junction temperature rating up to +150°C, and compatibility with low-ESR ceramic capacitors from 1 µF to 200 µF.

Technical Context

The TPS7B8233EPWPRQ1 implements a high-voltage PMOS pass transistor architecture enabling operation down to 3 V input - sustaining regulation during cold-crank and start-stop events. Its integrated undervoltage lockout (UVLO) triggers at 2.7 V with 200 mV hysteresis, preventing erratic behavior under brownout conditions.

Functional safety features include overcurrent limiting (310–690 mA trip range), thermal shutdown at 175°C with 20°C hysteresis, and short-circuit protection. The device supports enable-controlled sequencing via a high-voltage-tolerant EN pin (0.7 V logic-low threshold, 2 V logic-high threshold) and requires no external compensation due to internal stability optimization for 1–200 µF ceramic output capacitors.

Key Specifications

Pinout & Package

TPS7B8233EPWPRQ1 is packaged in a 14-pin HTSSOP (PWP) with exposed thermal pad. This thermally enhanced package delivers R_θJA = 52.0°C/W and requires soldering the thermal pad to a large GND plane for optimal power dissipation and sustained 300 mA output at elevated ambient temperatures.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS7B8233EPWPRQ1, the TPS7B8233QPWPRQ1 offers identical regulation performance in a smaller package but reduced thermal capability, while the NCP163AMX330TBG trades automotive robustness and wide input range for lower shutdown current in non-automotive applications.

Availability

TPS7B8233EPWPRQ1 is available at Aetrix Electronics and suitable for automotive body control modules, telematics gateways, headlight control units, and inverter auxiliary supplies requiring stable component supply with AEC-Q100 compliance and long-term production support.

Supply support for TPS7B8233EPWPRQ1 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, embedded processing, and automotive-grade power management solutions, with decades of automotive qualification expertise and broad manufacturing scale.

The TPS7B82-Q1 product line delivers ultra-low-IQ, high-voltage LDOs specifically engineered for always-on automotive subsystems - targeting stringent ISO 16750-2 parasitic drain limits and ASIL-ready power architectures.

FAQ

What is the maximum input voltage the TPS7B8233EPWPRQ1 can withstand?

The TPS7B8233EPWPRQ1 operates continuously from 3 V to 40 V input, and is rated to withstand 45 V transients for up to 200 ms without damage or regulation loss - meeting ISO 7637-2 Pulse 5a load-dump requirements. This eliminates the need for external TVS diodes in most automotive battery-connected applications.

Does the TPS7B8233EPWPRQ1 require an external capacitor for stability?

Yes, the TPS7B8233EPWPRQ1 requires a ceramic output capacitor between 1 µF and 200 µF with ESR between 0.001 Ω and 5 Ω for guaranteed stability. X5R or X7R dielectrics are recommended. An input capacitor (10–22 µF) is not required for stability but improves transient response and PSRR.

What is the quiescent current of the TPS7B8233EPWPRQ1 under typical operating conditions?

The TPS7B8233EPWPRQ1 draws 2.7 µA typical quiescent current at light load (I_OUT = 0.2 mA) and 300 nA in shutdown (EN = 0 V). These values are specified across –40°C to +150°C junction temperature and ensure compliance with ISO 16750-2 parasitic drain limits for automotive always-on systems.

Is the TPS7B8233EPWPRQ1 qualified for automotive use?

Yes, the TPS7B8233EPWPRQ1 is AEC-Q100 qualified as Grade 1 (–40°C to +125°C ambient, –40°C to +150°C junction) and features integrated UVLO, overcurrent, and thermal shutdown protections - making it suitable for critical automotive domains including body control, telematics, and lighting.

How does the enable (EN) pin function on the TPS7B8233EPWPRQ1?

The EN pin on the TPS7B8233EPWPRQ1 is a high-voltage-tolerant logic input with V_IL ≤ 0.7 V and V_IH ≥ 2 V. Driving EN high enables regulation; pulling EN low disables output and reduces quiescent current to 300 nA. It supports direct MCU GPIO control or self-biasing to the IN rail for always-on operation.