onsemi NCP4623HMXADJTCG

Overview

NCP4623HMXADJTCG from onsemi is an adjustable-output, 150 mA CMOS low-dropout linear voltage regulator with wide 2 V to 24 V input range, ±2.0% output voltage accuracy, and chip enable (CE) control. It delivers stable regulation for battery-powered and space-constrained systems requiring low quiescent current (5 µA typ.) and ceramic-capacitor compatibility (≥0.1 µF). Its XDFN6 1.6×1.6 mm package supports high-density PCB layouts in portable electronics.

For engineers reviewing the NCP4623HMXADJTCG datasheet, pinout, applications, or equivalent options, key selection criteria include its adjustable 2.5–24 V output range, thermal shutdown (150°C), current fold-back protection, dropout voltage as low as 0.20 V at 20 mA, and support for ceramic output capacitors down to 0.1 µF without external compensation.

Technical Context

The NCP4623HMXADJTCG implements a CMOS-based LDO architecture with internal reference (2.5 V), error amplifier, and pass transistor. Its CE pin enables active-high logic control with 2.1 V typical threshold, allowing precise power sequencing. The device uses fold-back current limiting and thermal shutdown (150°C trip, 125°C release) to protect against overload and overheating.

It operates across −40°C to +85°C ambient temperature and supports output voltages set externally via resistor divider on the ADJ pin. Input-to-output line regulation is 0.05–0.20 %/V, and load regulation is 20–115 mV depending on output voltage range - all verified under 1 mA to 40 mA load conditions with 0.1 µF ceramic input/output capacitors.

Key Specifications

Pinout & Package

Package: XDFN6 1.6×1.6×0.4 mm (Case 711AC), Pb-free, exposed thermal pad connected to GND.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP1703T-3302E/MB and XC6219B332MR-G, the NCP4623HMXADJTCG uniquely combines adjustable output, 24 V input capability, integrated thermal shutdown, and active CE control in a 1.6×1.6 mm XDFN6 package - making it optimal for compact, multi-rail, and thermally demanding designs.

Availability

NCP4623HMXADJTCG is available at Aetrix Electronics and suitable for battery-powered equipment, networking infrastructure, and home appliance control systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for NCP4623HMXADJTCG 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, and sensing solutions for automotive, industrial, cloud, and consumer markets.

The NCP4623HMXADJTCG belongs to onsemi's high-voltage LDO family designed for robust, space-constrained power regulation in battery-operated and wide-input industrial systems - emphasizing low IQ, thermal resilience, and ceramic-capacitor compatibility.

FAQ

What is the maximum input voltage rating for the NCP4623HMXADJTCG?

The NCP4623HMXADJTCG has an absolute maximum input voltage rating of 26.0 V, with recommended continuous operation up to 24 V. This wide input range allows direct use with 12 V and 24 V industrial or automotive supplies without pre-regulation. Exceeding 26.0 V may cause permanent damage, and operation above 24 V should be validated for thermal performance under actual load conditions. The NCP4623HMXADJTCG datasheet specifies safe operating area limits based on power dissipation and ambient temperature.

How do I configure the output voltage of the NCP4623HMXADJTCG?

The NCP4623HMXADJTCG output voltage is set using an external resistor divider between VOUT and GND, with the ADJ pin connected to the divider midpoint. The formula is VOUT = 2.5 × (1 + R1/R2) + (I_ADJ × R1), where I_ADJ ≈ 200 nA. For minimal error, select R1 and R2 such that the divider current (VOUT/(R1+R2)) is ~2 µA. The NCP4623HMXADJTCG supports outputs from 2.5 V up to just below VIN, with ±2.0% accuracy over temperature and load.

Does the NCP4623HMXADJTCG require external compensation components?

No, the NCP4623HMXADJTCG is internally compensated and stable with ceramic output capacitors ranging from 0.1 µF to 2.2 µF. No external compensation network is needed. Using capacitors outside this range - especially high-ESR types like tantalum - may cause instability or oscillation. The NCP4623HMXADJTCG datasheet confirms stability with 0.1 µF ceramic caps, simplifying layout and reducing BOM count.

What protection features does the NCP4623HMXADJTCG include?

The NCP4623HMXADJTCG integrates current fold-back protection, thermal shutdown (150°C trip, 125°C release), peak and short-circuit current limiting, and ESD protection (2000 V HBM). These features operate autonomously without external components. During overload, fold-back reduces both output current and voltage to limit power dissipation; thermal shutdown disables the output until junction temperature falls below 125°C. The NCP4623HMXADJTCG maintains reliability in harsh environments without added protection circuitry.

Can the NCP4623HMXADJTCG be used with a 1.8 V input supply?

No - the NCP4623HMXADJTCG has a minimum operating input voltage of 2.0 V, as specified in its electrical characteristics table. At 1.8 V, the device will not regulate and may exhibit undefined behavior or fail to start up. For sub-2 V applications, consider alternative LDOs such as the Torex XC6206 series (1.2 V min VIN) or onsemi's NCP160 series. The NCP4623HMXADJTCG is optimized for 2–24 V systems, including battery stacks and industrial rails.