Texas Instruments TPS7B8250EPWPRQ1

Overview

TPS7B8250EPWPRQ1 from Texas Instruments is an AEC-Q100 Grade 0 automotive LDO regulator delivering 300 mA at fixed 5 V output, with 3 V–40 V input range, 2.7 µA typical quiescent current at light load, 2% output accuracy, and 700 mV max dropout at 200 mA - designed for always-on MCU and CAN/LIN transceiver power in body control modules and telematics units.

For engineers reviewing the TPS7B8250EPWPRQ1 datasheet, TPS7B8250EPWPRQ1 pinout, TPS7B8250EPWPRQ1 application, or TPS7B8250EPWPRQ1 equivalent, key selection criteria include ultra-low IQ under 3 µA, 45 V transient tolerance, grade-0 junction temperature up to 165°C, HVSSOP-8 thermal performance (RθJA = 63.9°C/W), and integrated UVLO, current limit, and thermal shutdown.

Technical Context

The TPS7B8250EPWPRQ1 implements a high-voltage PMOS pass transistor architecture enabling operation down to 3 V input-critical for cold-crank survival-and integrates undervoltage lockout (2.7 V threshold, 200 mV hysteresis) to prevent erratic behavior during battery sag. Its enable pin tolerates up to VIN voltage and supports self-bias or microcontroller-controlled sequencing.

Thermal protection includes junction shutdown at 185°C with 20°C hysteresis, and the device sustains full 300 mA output across –40°C to +150°C ambient (Grade 0 extends junction limit to +165°C). Stability is guaranteed with 1 µF–200 µF ceramic capacitors having ESR from 0.001 Ω to 5 Ω.

Key Specifications

Pinout & Package

TPS7B8250EPWPRQ1 is packaged in an 8-pin HVSSOP (DGN) with exposed thermal pad. The package measures 3 mm × 4.9 mm and features RθJA = 63.9°C/W. Thermal pad must be soldered to a large-area GND plane for optimal thermal performance and sustained 300 mA operation at high ambient temperatures.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS7B8233QPWPRQ1, the TPS7B8250EPWPRQ1 provides higher output voltage for 5 V MCU domains; versus NCP163AMX500TBG, it delivers superior thermal robustness and transient immunity essential for engine-bay and safety-critical automotive subsystems.

Availability

TPS7B8250EPWPRQ1 is available at Aetrix Electronics and suitable for automotive body control modules, telematics units, headlight control systems, and inverter auxiliary supplies requiring stable component supply across extended temperature and high-reliability automotive programs.

Supply support for TPS7B8250EPWPRQ1 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-grade power management and signal chain solutions.

The TPS7B82-Q1 product line delivers ultra-low-IQ, high-voltage LDOs engineered specifically for always-on automotive subsystems-including BCMs, TCUs, and ADAS domain controllers-where battery lifetime, thermal resilience, and AEC-Q100 compliance are mandatory.

FAQ

What is the maximum input voltage the TPS7B8250EPWPRQ1 can withstand without damage?

The TPS7B8250EPWPRQ1 has an absolute maximum input voltage rating of 45 V, which it can withstand for up to 200 ms-covering automotive load-dump transients per ISO 7637-2. Continuous operation is specified from 3 V to 40 V. Exceeding 45 V, even briefly, risks permanent damage per the Absolute Maximum Ratings table.

Does the TPS7B8250EPWPRQ1 require an external capacitor on the EN pin for noise immunity?

No, the TPS7B8250EPWPRQ1 does not require an external capacitor on the EN pin. Its enable input is internally filtered and rated for direct connection to microcontroller GPIO or battery-sensed logic. However, for noisy environments (e.g., near motor drivers), a 100 pF ceramic capacitor from EN to GND may improve immunity without affecting turn-on delay.

Can the TPS7B8250EPWPRQ1 operate during automotive cold-crank conditions?

Yes, the TPS7B8250EPWPRQ1 operates down to 3 V input, making it fully functional during cold-crank events where battery voltage dips to ~3.2 V. Its 2.7 V UVLO threshold with 200 mV hysteresis ensures clean turn-off before brownout and reliable restart once voltage recovers-critical for maintaining MCU watchdog and CAN wake functionality.

What is the thermal pad connection requirement for the TPS7B8250EPWPRQ1 in HVSSOP-8 package?

The thermal pad of the TPS7B8250EPWPRQ1 HVSSOP-8 package must be soldered to a solid GND plane using ≥4 thermal vias (0.3 mm diameter, spaced ≤1 mm apart) beneath the pad. TI recommends 88% solder paste coverage on the exposed pad to achieve RθJA = 63.9°C/W and sustain 300 mA at +125°C ambient.

Is the TPS7B8250EPWPRQ1 pin-compatible with other members of the TPS7B82-Q1 family?

Yes, all TPS7B82-Q1 variants in the HVSSOP-8 (DGN) package-including TPS7B8233QPWPRQ1 (3.3 V) and TPS7B8225QPWPRQ1 (2.5 V)-share identical pinout, footprint, and thermal pad layout. Output voltage is set internally; no external resistors are needed, enabling voltage variant interchangeability without PCB redesign.