onsemi NCP4623HMX050TCG

Overview

NCP4623HMX050TCG from onsemi is a 5.0 V fixed-output, 150 mA CMOS low-dropout linear regulator with wide 2 V to 24 V input range, ±2.0% output voltage accuracy, 0.40 V typical dropout at 20 mA, and active-high enable (CE) pin enabling 0.1 µA standby current. It delivers stable power for compact battery-powered and industrial embedded systems requiring high PSRR (35 dB @ 1 kHz) and ceramic-capacitor compatibility (≥0.1 µF).

For engineers reviewing the NCP4623HMX050TCG datasheet, pinout, applications, or equivalent options, key selection criteria include its XDFN6 1.6×1.6 mm package thermal resistance (156 °C/W), current fold-back protection, thermal shutdown (150 °C), and guaranteed operation from −40 °C to +85 °C ambient.

Technical Context

The NCP4623HMX050TCG integrates a precision bandgap reference, error amplifier, and PMOS pass transistor in a CMOS architecture optimized for low quiescent current (5 µA typ) and fast transient response. Its CE pin controls full device enable/disable with defined threshold voltages (V_CEH = 2.1 V min, V_CEL = 0.3 V max), and internal protection includes peak/short-circuit limiting (45 mA typ), thermal shutdown with hysteresis (150 °C trip / 125 °C release), and current fold-back.

This regulator operates across a broad input range without external compensation, maintaining stability with 0.1–2.2 µF ceramic output capacitors. Its line regulation (0.05–0.20 %/V) and load regulation (20–75 mV over 1–40 mA) are specified across temperature and input voltage, supporting reliable performance in variable-supply environments like automotive body electronics and portable instrumentation.

Key Specifications

Pinout & Package

XDFN6 package (Case 711AC) with exposed thermal pad connected to GND; dimensions 1.6 mm × 1.6 mm × 0.4 mm, pitch 0.5 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP1700T-5002E/TT and XC6206P502MR-G, the NCP4623HMX050TCG provides essential enable control, 24 V input tolerance, integrated thermal and short-circuit protection, and XDFN6's superior thermal performance-making it uniquely suited for ruggedized, feature-complete industrial LDO applications.

Availability

NCP4623HMX050TCG is available at Aetrix Electronics and suitable for battery-powered equipment, networking infrastructure, home appliances, and industrial embedded controllers requiring stable component supply with guaranteed long-term availability.

Supply support for NCP4623HMX050TCG 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 manufacturer specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.

The NCP4623HMX050TCG belongs to onsemi's NCP4623 series of wide-input LDOs, designed specifically for space-constrained, thermally demanding applications in industrial automation, portable electronics, and communications infrastructure where reliability across wide voltage and temperature ranges is critical.

FAQ

What is the maximum input voltage rating for the NCP4623HMX050TCG?

The NCP4623HMX050TCG has an absolute maximum input voltage rating of 26.0 V, with recommended continuous operation up to 24 V. Exceeding 26.0 V may cause permanent damage. Its wide 2–24 V operating range makes it suitable for 12 V and 24 V industrial bus applications, including those with transient overvoltage conditions.

Does the NCP4623HMX050TCG require external capacitors, and what values are recommended?

Yes, the NCP4623HMX050TCG requires both input and output ceramic capacitors. A minimum 0.1 µF ceramic capacitor is required at the VIN pin, and 0.1–2.2 µF ceramic is recommended at VOUT. These must be placed as close as possible to their respective pins. Larger values improve transient response but are not required for basic stability.

How does the CE (Chip Enable) pin function on the NCP4623HMX050TCG?

The CE pin on the NCP4623HMX050TCG is an active-high enable input. The device operates when CE ≥ 2.1 V (typical V_CEH) and enters ultra-low-power standby (0.1 µA typ) when CE ≤ 0.3 V (typical V_CEL). Leaving CE floating or at indeterminate voltage risks unstable output; it must be actively driven or pulled to GND/VIN via a resistor.

What thermal protection features does the NCP4623HMX050TCG include?

The NCP4623HMX050TCG includes thermal shutdown that activates at 150 °C junction temperature and releases at 125 °C, providing 25 °C hysteresis. This prevents irreversible damage during overload or poor heatsinking. Its XDFN6 package offers 156 °C/W junction-to-air thermal resistance, and the exposed pad must be soldered to a thermal pad on the PCB for optimal performance.

Is the NCP4623HMX050TCG compatible with lead-free reflow processes?

Yes, the NCP4623HMX050TCG is a Pb-free device qualified for standard lead-free reflow soldering profiles per JEDEC J-STD-020. Its XDFN6 package (Case 711AC) is rated for peak reflow temperatures up to 260 °C, and the device complies with RoHS Directive 2011/65/EU and related environmental standards.