onsemi NCV8504PWADJG

Overview

NCV8504PWADJG from onsemi is an automotive-grade adjustable low-dropout (LDO) linear voltage regulator delivering up to 500 mA output current with 1.2 V to 18 V input range, ±2% output voltage accuracy over load/temperature, and integrated thermal shutdown and current limiting. It serves as a primary post-regulator in ADAS camera modules requiring stable 3.3 V or 5 V rails.

For engineers reviewing the NCV8504PWADJG datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at full load, AEC-Q100 Grade 1 qualification, adjustable output via external resistor divider, and reverse-battery protection for 12 V automotive systems.

Technical Context

The NCV8504PWADJG employs a PNP pass transistor architecture enabling ultra-low dropout (typically 270 mV at 500 mA), supports external feedback for precise output setting between 1.25 V and 17 V, and integrates undervoltage lockout (UVLO) that disables regulation below 2.7 V VIN. Its internal bandgap reference ensures ±2% initial accuracy and ±3% total output tolerance across –40 °C to +125 °C junction temperature.

Designed for harsh automotive environments, the device features reverse-polarity protection down to –40 V, short-circuit foldback current limiting, and thermal shutdown with hysteresis. No external compensation is required, and it operates stably with 1 µF ceramic output capacitors.

Key Specifications

Pinout & Package

NCV8504PWADJG is housed in a thermally enhanced 8-pin SOIC-EP (PW) package with exposed thermal pad, supporting PCB-level heat dissipation for continuous 500 mA operation at elevated ambient temperatures.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV73350PDBVR and TJA1055T/3, the NCV8504PWADJG uniquely combines AEC-Q100 Grade 1 qualification, 500 mA capability, adjustable output, and integrated PG/SS functions-making it the sole choice for scalable, multi-rail automotive vision and control modules requiring design reuse across voltage domains.

Availability

NCV8504PWADJG is available at Aetrix Electronics and suitable for ADAS camera modules, automotive infotainment displays, and body control units requiring stable component supply with full automotive qualification and long-term lifecycle assurance.

Supply support for NCV8504PWADJG 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

onsemi is a global semiconductor leader delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The NCV8504PWADJG belongs to onsemi's Automotive Power Management portfolio, engineered specifically for safety-critical vehicle subsystems demanding AEC-Q100 compliance, transient resilience, and functional safety readiness.

FAQ

What is the minimum input voltage required for the NCV8504PWADJG to regulate a 3.3 V output?

The NCV8504PWADJG requires a minimum input voltage of 3.57 V to maintain regulation at 3.3 V output under full 500 mA load, based on its typical 270 mV dropout voltage. At lighter loads, dropout decreases - e.g., 120 mV at 100 mA - allowing regulation from as low as 3.42 V. Input must remain above 2.7 V to prevent UVLO activation.

Does the NCV8504PWADJG require an external capacitor on the ADJ pin for stability?

No, the NCV8504PWADJG does not require an external capacitor on the ADJ pin. Stability is ensured by internal compensation and compatibility with 1 µF ceramic output capacitors. The ADJ pin connects solely to a resistor divider; adding capacitance there would disrupt feedback loop dynamics and is not supported per the datasheet.

Can the NCV8504PWADJG be used in a 24 V commercial vehicle application?

Yes, the NCV8504PWADJG supports input voltages up to 18 V continuously and withstands load dump transients per ISO 7637-2 Pulse 5a (up to 60 V for 400 ms). For 24 V nominal systems, it must be preceded by a DC-DC buck converter or transient voltage suppressor to clamp input below 18 V during normal operation - the device itself is not rated for direct 24 V input.

How does the Power Good (PG) pin of the NCV8504PWADJG behave during thermal shutdown?

During thermal shutdown, the NCV8504PWADJG deactivates its output and drives the PG pin low to indicate loss of regulation. PG remains low until junction temperature falls below the hysteresis threshold (~145 °C), at which point regulation resumes and PG returns high after the output stabilizes within ±7.5% of target - ensuring accurate fault signaling without chatter.

Is the exposed pad (EP) of the NCV8504PWADJG electrically connected internally?

Yes, the exposed pad (EP) of the NCV8504PWADJG is internally connected to GND. It must be soldered to a PCB thermal pad tied to a solid ground plane to achieve specified thermal performance and 500 mA continuous output capability. Leaving EP floating or unconnected degrades thermal resistance by >30 °C/W and risks premature thermal shutdown.