onsemi NCP160BMX514TBG

Overview

NCP160BMX514TBG from onsemi is a 250 mA ultra-low-noise, high-PSRR LDO regulator with fixed 5.14 V output, 80 mV dropout at 250 mA, ±2% output accuracy over load and temperature, and 10 µV_RMS output noise (10 Hz–100 kHz). It targets RF and analog power rails in battery-powered wireless devices requiring clean, stable voltage under dynamic load.

For engineers reviewing the NCP160BMX514TBG datasheet, pinout, applications, or equivalent options, key selection criteria include its non-active-discharge enable logic, XDFN-4 1 mm × 1 mm package, 98 dB PSRR at 1 kHz, 18 µA quiescent current, and compatibility with 1 µF ceramic input/output capacitors.

Technical Context

The NCP160BMX514TBG employs a PMOS pass transistor architecture enabling low dropout and inherent reverse-current protection. Its bandgap reference and integrated soft-start ensure stable startup without output overshoot, while thermal shutdown (160°C trip, 140°C reset) and 700 mA current limiting provide robust fault protection.

This variant lacks active output discharge (Version B), distinguishing it from Version A parts - EN assertion disables regulation but leaves VOUT floating. It operates across 1.9–5.5 V input and delivers precise 5.14 V output with <0.001%/mA load regulation and 0.02%/V line regulation, optimized for RF front-end biasing and precision analog sensor supplies.

Key Specifications

Pinout & Package

XDFN-4 1 mm × 1 mm × 0.4 mm package with exposed thermal pad (EPAD) for enhanced heat dissipation; RoHS-compliant, Pb-free.

Key Features

Applications

Equivalent & Alternatives

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

Compared with XC6217B514MR-G and BD3572EFJ-ME2, the NCP160BMX514TBG uniquely balances 250 mA capability, 10 µV_RMS noise, and 1 mm × 1 mm XDFN packaging - making it optimal for space-constrained, noise-sensitive RF and analog applications where both performance and footprint are critical.

Availability

NCP160BMX514TBG is available at Aetrix Electronics and suitable for wireless LAN modules, smartphone RF subsystems, and digital video recorder sensor interfaces requiring stable component supply with guaranteed long-term sourcing.

Supply support for NCP160BMX514TBG 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 power management, analog, sensing, and connectivity solutions for automotive, industrial, and consumer markets.

The NCP160 series is designed specifically for RF and high-performance analog circuits - prioritizing ultra-low noise, high PSRR, and minimal quiescent current to enable next-generation wireless and sensor systems.

FAQ

What is the output voltage tolerance of the NCP160BMX514TBG over temperature and load?

The NCP160BMX514TBG maintains ±2% output voltage accuracy across −40°C to +125°C junction temperature and 0–250 mA load current, as specified in the Electrical Characteristics table under "Output Voltage Accuracy" with VIN = VOUT(NOM) + 1 V. This tight tolerance ensures reliable operation of 5.14 V-dependent RF ICs without external trimming.

Does the NCP160BMX514TBG include active output discharge functionality?

No, the NCP160BMX514TBG is a Version B device and does not feature active output discharge. When the EN pin is pulled low (<0.4 V), the regulator disables and the OUT pin floats - no internal discharge path is activated. This behavior differs from Version A parts (e.g., NCP160AFCT514T2G) which integrate a 280 Ω discharge resistor.

What is the minimum recommended output capacitor for stable operation of the NCP160BMX514TBG?

The NCP160BMX514TBG is designed to remain stable with a minimum effective output capacitance of 0.7 µF, though a 1 µF X7R or X5R ceramic capacitor is recommended for optimal dynamic performance. Capacitor placement must be adjacent to the OUT and GND pins to minimize parasitic inductance and ensure robust load transient response.

How does the dropout voltage of the NCP160BMX514TBG vary with output current?

At 5.14 V nominal output, the NCP160BMX514TBG exhibits a dropout voltage of 60 mV (typical) to 105 mV (max) at 250 mA load, per the Electrical Characteristics table. Dropout increases linearly with current due to R_DS(on) of the PMOS pass element - e.g., ~75 mV at 100 mA and ~90 mV at 200 mA - enabling predictable low-voltage operation down to ~4.24 V input.

Can the NCP160BMX514TBG be used with input voltages below 2.0 V?

No - the NCP160BMX514TBG has a specified operating input voltage range of 1.9 V to 5.5 V. Operation below 1.9 V is outside absolute maximum ratings and may result in unregulated output, increased dropout, or failure to start. For sub-2.0 V applications, consider alternative LDOs with lower V_IN(min), such as the NCP161 series.