onsemi NCV8133BMX180TCG

Overview

NCV8133BMX180TCG from onsemi is a 500 mA very low dropout (VLDO) CMOS voltage regulator with NMOS pass transistor and separate VBIAS supply, delivering fixed 1.80 V output with ±1.5% accuracy over −40°C to +125°C, ultra-low 140 mV dropout at 500 mA, and 80 µA typical bias current - designed for automotive point-of-load regulation in FPGA, DSP, and camera power supplies.

For engineers reviewing the NCV8133BMX180TCG datasheet, pinout, applications, or equivalent options, this page provides verified technical context, validated pin functions, confirmed automotive-grade thermal and PSRR performance, and real-world selection guidance for noise-sensitive, space-constrained LDO deployments.

Technical Context

The NCV8133BMX180TCG employs a dual-rail architecture: VIN powers the NMOS pass element while VBIAS (2.4–5.5 V) independently supplies internal control circuitry, enabling stable regulation even when VIN approaches VOUT. Its UVLO circuit monitors VBIAS with 1.6 V threshold and 0.2 V hysteresis.

It features logic-level EN input with 0.9 V high-threshold and 0.4 V low-threshold, supports 2.2 µF ceramic output capacitance, achieves 70 dB PSRR at 1 kHz from VIN and 80 dB from VBIAS, and includes thermal shutdown activation at 160°C with 20°C hysteresis.

Key Specifications

Pinout & Package

XDFN6 1.2 mm × 1.2 mm package (Case 711AT) with exposed thermal pad soldered to ground plane for 170°C/W junction-to-air thermal resistance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NCV8133BMX180TCG, the A-version adds active discharge at no penalty to noise or accuracy, while TLD1114-18ES trades current capability and dropout for integration simplicity - making NCV8133BMX180TCG optimal for high-fidelity, high-current automotive point-of-load regulation where bias rail availability is not constrained.

Availability

NCV8133BMX180TCG is available at Aetrix Electronics and suitable for automotive camera modules, FPGA power management, and industrial DVR SoC regulation requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.

Supply support for NCV8133BMX180TCG 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 (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient silicon solutions for automotive, industrial, cloud, and IoT applications.

The NCV8133BMX180TCG belongs to onsemi's automotive-grade VLDO regulator family, engineered specifically for noise-sensitive, space-constrained point-of-load applications in ADAS, infotainment, and body electronics.

FAQ

What is the minimum VBIAS voltage required for NCV8133BMX180TCG to operate correctly?

The NCV8133BMX180TCG requires VBIAS ≥ 2.4 V, or (VOUT + 1.4 V) = 3.2 V - whichever is greater - to ensure proper internal circuit operation and avoid UVLO shutdown. At 1.80 V output, the effective minimum is 3.2 V. Operation below this threshold disables regulation and triggers undervoltage lockout.

Does NCV8133BMX180TCG include active output discharge functionality?

No, NCV8133BMX180TCG does not include active output discharge. That feature is exclusive to the "A" variant (e.g., NCV8133AMX180TCG). The "B" suffix indicates the standard version without discharge MOSFET, preserving downstream circuit state during disable.

Can NCV8133BMX180TCG be used with a 1.5 V input supply?

No - NCV8133BMX180TCG requires VIN ≥ (VOUT + VDO), and its typical dropout is 140 mV at 500 mA. With 1.80 V output, minimum functional VIN is ~1.94 V. A 1.5 V input falls below both dropout margin and absolute minimum VIN (0.8 V is the device rating, but regulation cannot be maintained at that level for 1.80 V output).

What is the thermal resistance (R_JA) of NCV8133BMX180TCG in its XDFN6 package?

The NCV8133BMX180TCG has a junction-to-air thermal resistance (R_JA) of 170°C/W in the XDFN6 1.2 mm × 1.2 mm package, measured with the exposed thermal pad soldered to a PCB ground plane. This value assumes standard JEDEC 2-layer board conditions; actual performance improves with enhanced copper pour or thermal vias.

Is NCV8133BMX180TCG compatible with 2.2 µF ceramic output capacitors from multiple vendors?

Yes - the NCV8133BMX180TCG is characterized and stable with 2.2 µF ceramic output capacitors meeting X5R/X7R dielectric specifications and rated ≥6.3 V. onsemi validates stability across vendor variations, provided effective capacitance remains ≥2.2 µF at DC bias and operating temperature.