onsemi NCV8187AMTW330TAG

Overview

NCV8187AMTW330TAG from onsemi is a 1.2 A automotive-grade LDO linear voltage regulator with fixed 3.3 V output, 30 µA typical quiescent current, ±2% output accuracy over full load/line/temperature, 15 µV_RMS output noise (10 Hz–100 kHz), and integrated Power Good open-drain signal. It delivers stable low-noise power for MCU core rails in infotainment systems.

For engineers reviewing the NCV8187AMTW330TAG datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at 1.2 A (150–220 mV for 3.3 V output), thermal shutdown threshold (170°C), wettable flank WDFNW6 2×2 mm package compatibility, and AEC-Q100 qualification for automotive use.

Technical Context

The NCV8187AMTW330TAG implements a precision bandgap reference (0.8 V nominal) with feedback loop stabilization via external SNS pin connection to output, enabling high-accuracy regulation despite input transients. Its internal soft-start circuit limits inrush current during enable, while active output discharge (120 Ω typical) ensures rapid VOUT decay upon shutdown.

Power Good logic monitors regulated output against 92% rising / 80% falling thresholds, asserting low when VOUT falls below 80% of nominal. The device operates across 1.5–5.5 V input range and maintains stability with only a 10 µF ceramic output capacitor-no minimum ESR required.

Key Specifications

Pinout & Package

NCV8187AMTW330TAG uses the WDFNW6 2×2 mm wettable flank package (Case 511DW), featuring exposed thermal pad for enhanced heat dissipation and solder joint inspection. Pin 1 is marked with dot; top view orientation follows standard IC convention.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV73333PDBVR and NCP114AMX330TBG, the NCV8187AMTW330TAG uniquely combines 1.2 A output, AEC-Q100 Grade 1 qualification, integrated Power Good, and wettable flank packaging-making it the only option qualified for demanding infotainment and ADAS power domains.

Availability

NCV8187AMTW330TAG is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and telematics control units requiring stable component supply with full AEC-Q100 documentation and PPAP support.

Supply support for NCV8187AMTW330TAG 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 (Nasdaq: ON) is a global semiconductor leader delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The NCV8187AMTW330TAG belongs to onsemi's automotive-qualified LDO portfolio, engineered specifically for high-reliability power management in safety-critical vehicle subsystems where low noise, precise regulation, and robust fault protection are mandatory.

FAQ

What is the maximum output current capability of the NCV8187AMTW330TAG?

The NCV8187AMTW330TAG delivers up to 1.2 A continuous output current when used in the WDFNW6 2×2 mm package with proper PCB thermal design. At 1.2 A and 3.3 V output, dropout remains ≤220 mV (typical), enabling operation with input as low as 3.52 V. Derating applies above +85°C ambient per thermal characteristics in the datasheet.

Does the NCV8187AMTW330TAG require an external resistor divider for its 3.3 V output?

No-the NCV8187AMTW330TAG is a fixed-output variant with internally trimmed 3.3 V regulation. The SNS pin must be connected directly to the OUT pin for accurate feedback; no external resistors are needed. The ADJ version (e.g., NCV8187AMTWADJTAG) would require a resistor divider, but NCV8187AMTW330TAG does not.

How is the Power Good (PG) signal configured on the NCV8187AMTW330TAG?

The NCV8187AMTW330TAG features an open-drain Power Good output (Pin 4) that pulls low when VOUT reaches ≥92% of 3.3 V and releases (high-impedance) when VOUT drops below 80% of 3.3 V. An external 10–100 kΩ pull-up resistor to VOUT or VIN is mandatory; the internal PG circuit disables automatically when EN = low.

Is the NCV8187AMTW330TAG compatible with standard reflow soldering processes?

Yes-the NCV8187AMTW330TAG in WDFNW6 2×2 mm package is qualified for lead-free reflow per J-STD-020. Its wettable flank design supports automated optical inspection of solder joints. Peak reflow temperature must not exceed 260°C, and moisture sensitivity level is MSL-1-no baking required prior to assembly.

What thermal performance can be expected from the NCV8187AMTW330TAG in a typical 4-layer PCB layout?

In a standard 4-layer board with 1 oz copper, 2 cm² thermal pad copper pour, and 2 internal ground/power planes, the NCV8187AMTW330TAG achieves ~51°C/W junction-to-ambient thermal resistance. At 1.2 A and 3.3 V output with 5 V input, power dissipation is ~2.04 W, resulting in ~104°C junction rise above ambient-well within the 150°C absolute maximum rating.