onsemi NCV8160BMX330TBG

Overview

NCV8160BMX330TBG from onsemi is an automotive-grade ultra-low-noise, high-PSRR linear regulator delivering 250 mA output current at a fixed 3.3 V output. It features 90 mV dropout at full load, 10 µV_RMS output noise (10 Hz–100 kHz), and 98 dB PSRR at 1 kHz-designed specifically for powering RF receivers, analog sensor front-ends, and infotainment power rails in ADAS and telematics systems.

For engineers reviewing the NCV8160BMX330TBG datasheet, pinout, applications, or equivalent options, key selection criteria include its AEC-Q100 Grade 1 qualification, XDFN4 1 mm × 1 mm package with exposed pad, active-discharge exclusion (Version B), and compatibility with 1 µF ceramic input/output capacitors without external compensation.

Technical Context

The NCV8160BMX330TBG employs a PMOS pass transistor architecture enabling low dropout and reverse-current protection via inherent body diode management. Its bandgap reference and integrated soft-start ensure stable startup under varying load and line conditions, while thermal shutdown (160°C trip, 140°C reset) and current limiting (700 mA typ.) provide robust fault handling across −40°C to +125°C ambient.

Unlike Version A, this B variant omits active output discharge-EN pin assertion disables regulation but leaves OUT floating. The device operates within 1.9 V–5.5 V input range and maintains ±2% output accuracy over temperature, with line regulation of 0.02%/V and load regulation of 0.005%/mA-critical for precision analog supply domains.

Key Specifications

Pinout & Package

NCV8160BMX330TBG is housed in a thermally enhanced XDFN4 (Case 711AJ) package: 1.0 mm × 1.0 mm × 0.4 mm body with 0.65 mm pitch and exposed thermal pad (EPAD) tied to GND for improved power dissipation. The 4-pin layout supports compact two-layer PCB designs in space-constrained automotive modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NCV8160AMX330TBG, the NCV8160BMX330TBG eliminates active discharge to reduce standby leakage and simplify power sequencing, while matching all critical RF/analog performance metrics. Against TLD1123-33-1, it delivers 23 dB higher PSRR, 40 mV lower dropout, and certified automotive reliability-justifying its use in safety-critical ADAS and telematics nodes.

Availability

NCV8160BMX330TBG is available at Aetrix Electronics and suitable for ADAS camera modules, infotainment audio subsystems, and telematics cellular modems requiring stable component supply with automotive-grade traceability and long-term lifecycle support.

Supply support for NCV8160BMX330TBG 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 supplier focused on energy-efficient electronics, delivering silicon solutions for automotive, industrial, cloud, and IoT applications.

The NCV8160BMX330TBG belongs to onsemi's automotive-qualified LDO portfolio, engineered specifically for noise-sensitive RF and analog circuits in safety-critical vehicle systems-including radar, camera, and V2X communication modules.

FAQ

What is the maximum input voltage rating for the NCV8160BMX330TBG?

The NCV8160BMX330TBG has an absolute maximum input voltage rating of 6 V. Operation above 5.5 V violates recommended conditions and risks permanent damage. For automotive applications with 12 V battery feed-through, a pre-regulator stage is required before the NCV8160BMX330TBG input pin.

Does the NCV8160BMX330TBG include active output discharge functionality?

No, the NCV8160BMX330TBG (Version B) does not include active output discharge. When the EN pin is pulled low, the output floats. This differs from the NCV8160AMX330TBG (Version A), which pulls OUT to GND through a 280 Ω resistor during disable. The NCV8160BMX330TBG is selected where passive discharge suffices or where minimizing shutdown leakage is critical.

What ceramic capacitor dielectric is recommended for the NCV8160BMX330TBG output?

X7R or X5R dielectric ceramic capacitors are recommended for both input and output of the NCV8160BMX330TBG. These dielectrics maintain stable capacitance over temperature and DC bias-critical because small-case 0201/0402 capacitors lose significant effective capacitance at 3.3 V bias. Avoid Y5V or Z5U due to excessive drift.

Can the NCV8160BMX330TBG operate with less than 1 µF output capacitance?

The NCV8160BMX330TBG is designed for stability with ≥1 µF output capacitance. While it may remain stable down to 0.7 µF effective capacitance (accounting for DC bias and temperature derating), using less than 1 µF risks instability under load transients or elevated temperature. Always verify loop stability with actual board layout and worst-case capacitor tolerance.

Is thermal pad (EPAD) connection mandatory for the NCV8160BMX330TBG?

Yes, soldering the EPAD to a solid GND plane is mandatory for reliable operation at 250 mA. With no EPAD connection, thermal resistance rises sharply-exceeding 198°C/W-and junction temperature can breach 150°C even at 85°C ambient. A minimum 100 mm² copper area connected to EPAD is required to meet datasheet thermal specifications.