onsemi NCP4586DMU50TCG

Overview

NCP4586DMU50TCG from onsemi is a CMOS low-dropout linear regulator delivering 150 mA output with 5.0 V fixed output voltage, ±1% accuracy at 25°C, 320 mV typical dropout at full load, and 80 dB PSRR at 1 kHz - designed for battery-powered portable electronics requiring stable, low-noise power rails.

For engineers reviewing the NCP4586DMU50TCG datasheet, pinout, applications, or equivalent options, this page provides verified electrical specs, UDFN4 package details, enable polarity confirmation (active-high CE), thermal performance data, and real-world use context for rapid integration into space-constrained, low-power systems.

Technical Context

The NCP4586DMU50TCG implements a CMOS-based LDO architecture with internal reference, error amplifier, and pass transistor - optimized for ultra-low quiescent current (38–58 µA) and high ripple rejection across 10 Hz–1 MHz. Its enable input is active-high (CE), and it includes current-foldback protection and auto-discharge functionality via an integrated N-channel discharge switch.

It operates across 1.7–6.5 V input range while maintaining 5.0 V output with ±1% initial accuracy and ±15 mV total variation over −40°C to +85°C ambient. Stable with only 0.47 µF ceramic output capacitance, it avoids ESR-dependent compensation and supports fast load transient response (<100 µs settling time per Figures 30–35).

Key Specifications

Pinout & Package

Package: 1.0 mm × 1.0 mm, 0.65 mm pitch UDFN4 (Case 517BR), Pb-free, wettable flank capable. Exposed thermal pad improves θ_JA to 250°C/W.

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 NCP4586DMU50TCG uniquely combines 150 mA capability, active-high CE, auto-discharge, and UDFN4 footprint - making it optimal for compact, sequenced, battery-sensitive designs where controlled shutdown and minimal board area are mandatory.

Availability

NCP4586DMU50TCG is available at Aetrix Electronics and suitable for portable medical sensors, wireless audio transceivers, industrial handheld scanners, and smart home motion detectors requiring stable component supply with guaranteed long-term manufacturability.

Supply support for NCP4586DMU50TCG 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 focused on energy-efficient electronics, automotive, industrial, and cloud power solutions.

The NCP4586DMU50TCG belongs to the NCP4586 family of low-noise, low-I_Q LDOs engineered specifically for battery-powered portable equipment - emphasizing minimal footprint, high accuracy, and robust transient performance in space- and power-constrained applications.

FAQ

What is the enable polarity and threshold voltage for NCP4586DMU50TCG?

The NCP4586DMU50TCG features an active-high enable pin (CE). Its CE input threshold is specified as V_CEH ≥ 1.0 V for logic high and V_CEL ≤ 0.4 V for logic low. Internal pull-down current (0.4 µA) ensures default disable state when CE is left unconnected - eliminating need for external pull-down resistors in most implementations of NCP4586DMU50TCG.

Does NCP4586DMU50TCG include output auto-discharge functionality?

Yes, the NCP4586DMU50TCG (D-version) integrates an N-channel discharge switch between VOUT and GND. When CE is driven low, this switch activates to rapidly discharge the output capacitor - preventing residual voltage from interfering with downstream power sequencing or causing latch-up in multi-rail systems. This function is confirmed in the "Output Discharger" section of the datasheet and applies specifically to NCP4586DMU50TCG.

What is the minimum input voltage required for NCP4586DMU50TCG to regulate 5.0 V output?

The NCP4586DMU50TCG requires VIN ≥ VOUT + V_DO to maintain regulation. With a typical dropout voltage of 320 mV at 150 mA, the minimum functional input is 5.32 V. However, the device remains operational (though not regulating) down to 1.7 V input. For reliable 5.0 V output under full load, VIN must be ≥5.32 V - verified in Figure 6 (Dropout vs. IOUT) and Electrical Characteristics table for the 5.0 V version of NCP4586DMU50TCG.

Can NCP4586DMU50TCG operate with ceramic output capacitors smaller than 1 µF?

Yes - the NCP4586DMU50TCG is explicitly characterized and guaranteed stable with a minimum 0.47 µF ceramic output capacitor, as stated in the Features list and Application Information section. This eliminates ESR dependency and allows use of compact, low-profile X5R/X7R MLCCs. Larger values improve transient response but are not required for stability of NCP4586DMU50TCG.

What is the thermal resistance (θ_JA) of NCP4586DMU50TCG in its UDFN4 package?

The NCP4586DMU50TCG in the 1.0 mm × 1.0 mm UDFN4 package (Case 517BR) has a junction-to-air thermal resistance (θ_JA) of 250°C/W, as specified in the Thermal Characteristics table on page 3 of the datasheet. This value assumes standard JEDEC 2S2P test board conditions; actual performance improves significantly with PCB copper pour connected to the exposed thermal pad.