Texas Instruments TPS7B8750QKVURQ1R2

Overview

TPS7B8750QKVURQ1R2 from Texas Instruments is an AEC-Q100 Grade 1 automotive LDO regulator delivering 5.0V fixed output at up to 500mA, with 40V max input, ±0.85% DC accuracy over line/load/temperature, and 475mV max dropout at 450mA - designed for always-on battery-connected systems such as automotive gateways and remote keyless entry modules.

For engineers reviewing the TPS7B8750QKVURQ1R2 datasheet, TPS7B8750QKVURQ1R2 pinout, TPS7B8750QKVURQ1R2 application, or TPS7B8750QKVURQ1R2 equivalent, key selection criteria include cold-crank transient response (±2% VOUT deviation), programmable power-good delay via external capacitor, thermal shutdown with 20°C hysteresis, and compatibility with 2.2µF minimum ceramic output capacitance.

Technical Context

The TPS7B8750QKVURQ1R2 implements a bandgap-referenced control loop with integrated UVLO (2.6V rising, 2.5V falling), thermal shutdown (175°C trip), and current limiting (540–780mA). Its architecture minimizes output overshoot during cold-crank recovery by dynamically adjusting pass transistor biasing.

Power-good functionality uses an open-drain PG pin with internal 10–50kΩ pullup and adjustable delay via external capacitor on the DELAY pin (1.17–1.25V threshold, 1–2µA charging current), enabling precise sequencing in multi-rail automotive subsystems.

Key Specifications

Pinout & Package

TPS7B8750QKVURQ1R2 is packaged in a 5-pin TO-252 (KVU) thermally enhanced surface-mount package with exposed thermal pad soldered to PCB ground plane for optimal heat dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS7B8733QKVURQ1 and TPS7B8150QDDARQ1, the TPS7B8750QKVURQ1R2 uniquely balances 500mA drive capability, 5V output, programmable power-good timing, and TO-252 thermal performance - making it optimal for high-current automotive subsystems requiring both robustness and sequencing flexibility.

Availability

TPS7B8750QKVURQ1R2 is available at Aetrix Electronics and suitable for automotive gateways, reconfigurable instrument clusters, and body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TPS7B8750QKVURQ1R2 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 and functional-safety solutions.

The TPS7B87-Q1 product line was developed specifically for battery-connected automotive subsystems demanding ultra-low quiescent current, high input voltage tolerance, and precise power sequencing - targeting ASIL-B compliant applications including gateways, BCMs, and ADAS domain controllers.

FAQ

What is the maximum input voltage rating for the TPS7B8750QKVURQ1R2?

The TPS7B8750QKVURQ1R2 has an absolute maximum input voltage rating of 42V, with recommended continuous operation up to 40V. This enables reliable operation during automotive load-dump events, where battery voltage can surge transiently beyond nominal 12V or 24V levels. The device remains functional and protected within this range when used with appropriate input capacitance and layout practices.

Does the TPS7B8750QKVURQ1R2 require an external capacitor on the DELAY pin?

No, the TPS7B8750QKVURQ1R2 does not require an external capacitor on the DELAY pin. Leaving the pin floating configures a fixed 100µs power-good propagation delay. An external capacitor (1nF–1µF) is optional and used only when programmable delay timing is needed - for example, to coordinate startup with other power rails or avoid race conditions in multi-IC systems.

What output capacitor value is required for stable operation of the TPS7B8750QKVURQ1R2?

The TPS7B8750QKVURQ1R2 requires a minimum 2.2µF ceramic output capacitor with ESR ≤2Ω for guaranteed stability across all operating conditions. TI recommends using X7R or X5R dielectrics in 0603 or larger case sizes. Larger values (e.g., 10µF–22µF) improve transient response but are not mandatory for basic regulation.

How does the power-good (PG) pin function on the TPS7B8750QKVURQ1R2?

The PG pin on the TPS7B8750QKVURQ1R2 is an open-drain output that goes high-impedance when VOUT reaches ≥95% of nominal (4.75V), allowing an external pullup resistor to assert a logic-high signal. It pulls low when VOUT drops below 93% (4.65V). This provides a precise, hysteresis-enabled power-valid signal for system sequencing and reset management in automotive ECUs.

Is the TPS7B8750QKVURQ1R2 qualified for automotive applications?

Yes, the TPS7B8750QKVURQ1R2 is AEC-Q100 qualified for automotive applications, rated for Temperature Grade 1 (–40°C to +125°C ambient) and junction temperatures up to +150°C. It includes built-in undervoltage lockout, thermal shutdown with 20°C hysteresis, and current limiting - meeting functional safety requirements for ASIL-B systems per ISO 26262.