onsemi NCP590MNVVTAG

Overview

NCP590MNVVTAG from onsemi is a dual-output, ultra-low-dropout CMOS LDO regulator in a 2×2 mm DFN8 package, delivering up to 300 mA per output at fixed 3.3 V/3.3 V. It achieves ±0.9% voltage accuracy at 100 mA and 25°C, features independent enable pins (EN1/EN2), and supports input voltages from 2.1 V to 5.5 V - ideal for space-constrained, battery-powered portable electronics requiring precise dual-rail power.

For engineers reviewing the NCP590MNVVTAG datasheet, pinout, applications, or equivalent options, key selection criteria include its dual 3.3 V outputs with independent enables, 50 mV typical dropout at 100 mA, 20 µV_RMS output noise without bypass capacitor, active output discharge, and stability with only 1.0 µF output capacitance across any capacitor type including MLCC.

Technical Context

The NCP590MNVVTAG integrates two independent PMOS-based LDO regulators sharing a common input but with separate error amplifiers, precision references, and dedicated enable inputs. Each regulator uses internal compensation and supports zero-load stability without minimum current requirements.

It implements thermal shutdown (155°C trip), current limiting (~750 mA per channel), input UVLO (2.1 V threshold), and active pull-down during disable for fast turn-off. The 2×2 DFN8 package includes an exposed thermal pad tied to GND for optimal junction-to-board thermal resistance (36.4°C/W).

Key Specifications

Pinout & Package

Package: 2×2 mm DFN8 (Case 506AA), thermally enhanced with exposed GND pad. Requires solder connection of thermal pad to PCB ground plane for optimal thermal performance (Ψ_JB = 36.4°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-output LDO applications.

Compared with the NCP590MNVVTAG, the XC6223D331MR-G and RT9013-33PB each address single-rail needs with smaller footprints or lower I_Q, but neither provides the integrated dual-output, independent enable, and active discharge capabilities essential for compact dual-supply systems.

Availability

NCP590MNVVTAG is available at Aetrix Electronics and suitable for smartphone power management, portable media player subsystems, and PCMCIA interface designs requiring stable component supply, consistent parametric performance, and long-term lifecycle support.

Supply support for NCP590MNVVTAG 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 innovation for automotive, industrial, cloud, and IoT applications.

The NCP590MNVVTAG belongs to onsemi's high-precision CMOS LDO family designed specifically for battery-powered portable electronics demanding dual-rail, ultra-low-dropout, and minimal external components.

FAQ

What output voltages does the NCP590MNVVTAG provide?

The NCP590MNVVTAG provides two identical, fixed 3.3 V outputs - Vout1 and Vout2 - each capable of delivering up to 300 mA. Its marking code "VV" explicitly denotes the 3.3 V/3.3 V configuration, confirmed in the Ordering Information table on page 10 of the official datasheet. No external resistors are needed, and the outputs are internally trimmed to ±0.9% accuracy at nominal load and temperature.

Does the NCP590MNVVTAG require external capacitors for stability?

Yes, the NCP590MNVVTAG requires a minimum 1.0 µF ceramic input capacitor (C_IN) placed close to the Vin pin, and individual 0.7–4.7 µF output capacitors (C_OUT1, C_OUT2) for each regulated output. Critically, it is stable with any capacitor type-including MLCC-and any ESR value across the full operating temperature range, eliminating ESR dependency concerns found in older LDO architectures.

How does the enable functionality work on the NCP590MNVVTAG?

The NCP590MNVVTAG features two independent enable inputs: EN1 controls Vout1, and EN2 controls Vout2. Either output turns on when its respective enable pin exceeds 0.95 V (VIH), and turns off when pulled below 0.4 V (VIL). During disable, active pull-down transistors discharge the output capacitors rapidly - a key feature absent in most single-enable dual-LDOs and essential for clean power sequencing in portable systems.

What thermal considerations apply to the NCP590MNVVTAG in a 2×2 DFN8 package?

The NCP590MNVVTAG uses a thermally enhanced 2×2 mm DFN8 package (Case 506AA) with an exposed GND pad. For reliable operation at full 300 mA per channel, the thermal pad must be soldered to a PCB copper pour connected to system ground. With 1 oz Cu, θ_JA is 158°C/W; with 2 oz Cu, it drops to 133°C/W. Junction temperature must stay ≤125°C - thermal design must account for worst-case power dissipation: P_D = (V_IN−3.3)V × I_OUT1 + (V_IN−3.3)V × I_OUT2 + V_IN × I_GNDD.

Is the NCP590MNVVTAG compatible with lead-free reflow processes?

Yes, the NCP590MNVVTAG is a Pb-free device qualified for lead-free reflow per IPC/JEDEC J-STD-020C, with a peak reflow temperature of 265°C (40 sec max at peak, 60–150 sec above 217°C). Its moisture sensitivity level (MSL) is 1, meaning it can be stored indefinitely in dry conditions without baking prior to assembly - simplifying manufacturing logistics for high-volume production.