onsemi NCV8160BMX250TBG

Overview

NCV8160BMX250TBG from onsemi is an automotive-grade ultra-low-noise, high-PSRR linear regulator delivering 250 mA output current with 2.5 V fixed output voltage, 90 mV dropout at full load, ±2% output accuracy over −40°C to +125°C, and 10 µV_RMS output noise - designed for RF and analog power rails in ADAS camera modules and infotainment processors.

For engineers reviewing the NCV8160BMX250TBG datasheet, pinout, applications, or equivalent options, key selection criteria include its AEC-Q100 Grade 1 qualification, non-active-discharge version (Version B), XDFN4 1 mm × 1 mm package, and compatibility with 1 µF ceramic input/output capacitors without external compensation.

Technical Context

The NCV8160BMX250TBG uses a PMOS pass transistor architecture enabling low dropout and inherent reverse-current protection, with integrated bandgap reference, thermal shutdown (160°C trip), and current limiting (700 mA typ.). Its enable logic requires V_EN > 1.2 V to activate regulation and V_EN < 0.4 V to disable with 0.01 µA shutdown current.

Unlike Version A, this B variant omits active output discharge - confirmed by datasheet ordering table and "Non-Active Discharge" description - and maintains identical PSRR (98 dB @ 1 kHz), line/load regulation (0.02%/V, 0.005%/mA), and stability with 1 µF X7R/X5R ceramics across −40°C to +125°C.

Key Specifications

Pinout & Package

XDFN4 package (Case 711AJ), 1.0 mm × 1.0 mm × 0.4 mm body with exposed thermal pad (EPAD) - optimized for high-density PCB layouts and thermal dissipation in sealed automotive enclosures.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NCV8160BMX250TBG, the A-version adds active discharge at no penalty to noise or PSRR, while the TLD1124-12ES trades automotive reliability and RF performance for lower cost - making NCV8160BMX250TBG the optimal choice for noise-sensitive, safety-compliant automotive power rails.

Availability

NCV8160BMX250TBG is available at Aetrix Electronics and suitable for ADAS camera modules, infotainment processors, and telematics GNSS receivers requiring stable component supply, automotive-grade reliability, and ultra-low-noise regulation.

Supply support for NCV8160BMX250TBG 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 specializing in energy-efficient, high-reliability components for automotive, industrial, and cloud infrastructure applications.

The NCV8160 series is part of onsemi's automotive power management portfolio, engineered specifically for RF and analog subsystems in ADAS, infotainment, and telematics - prioritizing ultra-low noise, high PSRR, and AEC-Q100 compliance.

FAQ

What is the key functional difference between NCV8160BMX250TBG and NCV8160AMX250TBG?

The NCV8160BMX250TBG is the non-active-discharge variant, meaning it lacks the internal 280 Ω pull-down transistor on the OUT pin during shutdown. When EN is low, NCV8160BMX250TBG simply stops regulating and leaves VOUT floating, whereas the A-version actively discharges VOUT to GND. All other electrical parameters - output voltage, PSRR, noise, dropout, and thermal behavior - are identical between the two versions.

Does NCV8160BMX250TBG require external compensation components?

No, the NCV8160BMX250TBG is internally compensated and stable with only 1 µF ceramic input and output capacitors - no external resistors, capacitors, or ferrite beads are required. The datasheet explicitly confirms stability with 0.7 µF minimum effective COUT (accounting for DC bias and temperature effects), making it ideal for space-constrained automotive PCBs where layout simplicity is critical.

What is the maximum allowable input voltage for NCV8160BMX250TBG?

The absolute maximum input voltage for NCV8160BMX250TBG is 6 V, but the recommended operating range is 1.9 V to 5.5 V. Exceeding 5.5 V risks violating safe operating area limits, especially at high junction temperatures. For automotive applications with load-dump transients, external clamping (e.g., TVS diode) is required upstream since the device itself does not include overvoltage protection.

How does the thermal performance of NCV8160BMX250TBG depend on PCB layout?

NCV8160BMX250TBG's thermal resistance (R_JA = 198.1°C/W) assumes JEDEC-standard 2-layer board with 1 oz copper and full EPAD soldering to ground plane. Without proper EPAD connection, R_JA degrades significantly - reducing max continuous output current. Layout must use ≥20 mm² copper pour under the EPAD and multiple thermal vias to inner ground layers to sustain 250 mA at +125°C ambient.

Is NCV8160BMX250TBG compatible with 0201-size ceramic capacitors?

Yes, NCV8160BMX250TBG is validated for use with 0201 1 µF X7R/X5R ceramics, as confirmed in the Applications Information section. However, designers must account for DC bias derating - a typical 0201 1 µF capacitor may deliver only ~0.4–0.6 µF effective capacitance at 2.5 V bias, so selecting a higher nominal value (e.g., 2.2 µF) or verifying effective COUT across voltage/temperature is recommended for margin-critical designs.