onsemi NCP583XV25T2G

Overview

NCP583XV25T2G from onsemi is an ultra-low quiescent current (1.0 µA typical), 150 mA CMOS low-dropout regulator with active-high enable, delivering a precise 2.5 V output voltage in SOT-563 package. It features 250 mV dropout at 150 mA load, ±2% output accuracy, and operates from 1.7 V to 6.0 V input - optimized for battery-powered portable instrumentation requiring long runtime and stable rail integrity.

For engineers reviewing the NCP583XV25T2G datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low I_q, tight load/line regulation (20 mV / 0.05%/V), thermal performance (R_JA = 200°C/W), shutdown current (0.1 µA), and compatibility with 0.1 µF ceramic output capacitance.

Technical Context

The NCP583XV25T2G implements a CMOS-based LDO architecture with internal foldback current limiting and thermal shutdown protection. Its CE pin enables full system-level power gating, reducing total system standby current to sub-microamp levels.

Designed for single-supply operation, it maintains regulation down to V_IN = V_OUT + 0.25 V at light loads and supports input transients up to 6.5 V. Output voltage temperature coefficient is tightly controlled at ±100 ppm/°C, ensuring stability across −40°C to +85°C ambient.

Key Specifications

Pinout & Package

SOT-563 (Case 463A), 6-pin, Pb-free surface-mount package measuring 1.60 mm × 1.20 mm × 0.55 mm with 0.50 mm pitch. Thermal resistance R_JA = 200°C/W enables reliable operation at full load in confined PCB areas.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP1700T-2502E/TT and TNIV52500QDS, the NCP583XV25T2G offers superior thermal performance via dual-GND pins and a dedicated NC pin for layout flexibility, while maintaining best-in-class 1.0 µA quiescent current and 250 mV dropout - making it optimal for space-constrained, battery-critical designs.

Availability

NCP583XV25T2G is available at Aetrix Electronics and suitable for portable medical sensors, wearable health monitors, industrial handheld scanners, and smart meter sensor interfaces requiring stable component supply, long-term lifecycle support, and Pb-free compliance.

Supply support for NCP583XV25T2G 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, cloud, and consumer markets.

The NCP583 series belongs to onsemi's ultra-low-I_q LDO portfolio, engineered specifically for extended-battery-life portable electronics where micropower operation and precision voltage regulation are non-negotiable.

FAQ

What is the maximum input voltage rating for the NCP583XV25T2G?

The NCP583XV25T2G has an absolute maximum input voltage rating of 6.5 V on the Vin pin and 6.5 V on the CE pin. The recommended operating input voltage range is 1.7 V to 6.0 V, as specified in the Electrical Characteristics table. Exceeding 6.5 V may cause permanent damage. The NCP583XV25T2G must not be operated outside these limits to ensure reliability and avoid junction overheating.

Does the NCP583XV25T2G require an external capacitor on the output pin?

Yes, the NCP583XV25T2G requires a 0.1 µF ceramic capacitor on the Vout pin for stable operation and optimal transient response, as confirmed in the Application Information section. A 1.0 µF ceramic capacitor is recommended on the Vin pin. These values are validated in the datasheet's Typical Characteristics and Layout Guidelines - using smaller or higher-ESR capacitors may degrade load regulation or cause oscillation in the NCP583XV25T2G.

What is the function of Pin 4 (NC) on the NCP583XV25T2G SOT-563 package?

Pin 4 of the NCP583XV25T2G is explicitly designated as "No Connect" (NC) in the Pin Function Description table. It is internally unconnected and must remain electrically floating - no trace, pad, or solder connection should be made to this pin. Connecting Pin 4 risks compromising device functionality or reliability, as confirmed in the official onsemi datasheet revision 15.

How does the NCP583XV25T2G behave during thermal overload?

The NCP583XV25T2G incorporates internal thermal shutdown protection that activates when junction temperature exceeds 125°C. Upon triggering, the device disables the pass element and forces Vout to drop to near-zero, holding shutdown until die temperature falls below the hysteresis threshold (~110°C). This behavior is documented in the Maximum Ratings and Electrical Characteristics sections and applies to the NCP583XV25T2G regardless of enable state or load condition.

Can the NCP583XV25T2G be used with input voltages below 1.7 V?

No - the NCP583XV25T2G is not characterized or guaranteed to operate below 1.7 V input. The Electrical Characteristics table specifies Vin = 1.7 V to 6.0 V as the valid operating range. At inputs below 1.7 V, output regulation cannot be assured, dropout margin collapses, and Vout may fall outside ±2% tolerance. For sub-1.7 V applications, alternative regulators such as the NCP583XV15T2G (1.5 V version) or specialized ultra-low-Vin LDOs must be selected instead of the NCP583XV25T2G.