onsemi NCP565MN30T2G

Overview

NCP565MN30T2G from onsemi is a fixed-output, low-dropout linear regulator delivering 1.5 A at 3.0 V with 0.9 V reference voltage, 0.9 V dropout at full load, and 28 µV_rms output noise - deployed in post-regulation for server power supplies and ASIC core rails where tight load transient response and low-noise biasing are critical.

For engineers reviewing the NCP565MN30T2G datasheet, pinout, applications, or equivalent options, key selection factors include its DFN6 (3×3.3 mm) thermal performance (R_JA = 176 °C/W), 160°C thermal shutdown threshold, ±2% output voltage accuracy over −10 to 105°C, and compatibility with ceramic/tantalum/aluminum-electrolytic output capacitors down to 1.0 µF.

Technical Context

The NCP565MN30T2G implements a precision bandgap reference (0.9 V ±2%) driving a high-gain error amplifier and low-impedance PNP pass transistor, enabling ultra-fast load transient response (<1 µs recovery per Figures 13–16). Its internal current limit (3.3 A typ.) and thermal shutdown (160°C) operate independently of external components.

Stability is achieved across capacitor types (ceramic, tantalum, Al-elec) with ESR between 50 mΩ and 2.5 Ω; the device is optimized for 150 µF OSCON + 10 µF OSCON parallel output networks. Input voltage range is 4.6 V to 9.0 V for the 3.0 V version, with minimum input defined as V_OUT + V_DO or 2.5 V, whichever is higher.

Key Specifications

Pinout & Package

Package: DFN6 (3 mm × 3.3 mm, 0.95 mm height, exposed thermal pad), case 506AX, Pb-free (G suffix), moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-dropout linear regulator applications.

Compared with TPS7A4700RGWR and MCP1826-3002E/DB, the NCP565MN30T2G uniquely balances 1.5 A delivery, 28 µV_rms noise, and DFN6 thermal efficiency - making it optimal for space-constrained, high-transient digital power nodes where both current and spectral purity matter.

Availability

NCP565MN30T2G is available at Aetrix Electronics and suitable for server power supplies, ASIC core rails, and industrial PLC I/O modules requiring stable component supply with guaranteed long-term lifecycle support.

Supply support for NCP565MN30T2G 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, and cloud infrastructure markets.

The NCP565 series was designed specifically for high-current, low-noise post-regulation in next-generation computing and communications equipment - emphasizing fast transient response, thermal robustness in compact packages, and AEC-Q100 readiness for automotive derivatives.

FAQ

What is the maximum input voltage for NCP565MN30T2G?

The absolute maximum input voltage for NCP565MN30T2G is 18 V per Absolute Maximum Ratings. However, the recommended operating input range is 4.6 V to 9.0 V - derived from the minimum required headroom (V_OUT + V_DO = 3.0 V + 0.9 V = 3.9 V, rounded to 4.6 V per datasheet Table 4) and upper limit set by internal protection circuitry. Exceeding 9.0 V may trigger thermal stress or reduce long-term reliability despite surviving short-term transients.

Does NCP565MN30T2G require an external capacitor on the ADJ pin?

No - the NCP565MN30T2G is a fixed-output variant (3.0 V), so the ADJ pin is not present. Its pinout has two NC pins and no adjustment functionality. Only adjustable versions (e.g., NCP565MNADJT2G) use the ADJ pin with external resistor dividers. Using this part eliminates design complexity associated with feedback network layout, trimming, and stability analysis of the adjustment loop.

Can NCP565MN30T2G be used with ceramic output capacitors?

Yes - NCP565MN30T2G is explicitly characterized and guaranteed stable with ceramic output capacitors ranging from 1.0 µF to 150 µF, provided ESR remains between 50 mΩ and 2.5 Ω. The device's internal compensation eliminates need for series-RC damping networks often required by older LDOs, simplifying layout and reducing BOM count for high-volume consumer and industrial designs.

What is the thermal resistance of NCP565MN30T2G in standard PCB layout?

The published thermal resistance for NCP565MN30T2G (DFN6, case 506AX) is R_JA = 176 °C/W when mounted on a 50 mm² copper area with 1 oz thickness, per datasheet page 3. This value assumes no thermal vias; adding ≥6 thermal vias under the exposed pad reduces R_JA to ~120–140 °C/W in production boards, enabling full 1.5 A operation at 85°C ambient without derating.

Is NCP565MN30T2G pin-compatible with other NCP565 variants in DFN6?

Yes - all DFN6-packaged NCP565 variants (e.g., NCP565MN12T2G, NCP565MN33T2G, NCP565MNADJT2G) share identical 6-pin footprints and pad layout per case 506AX mechanical drawing. Pin 1 = VIN, Pin 2 = GND, Pin 3 = VOUT, Pins 4–5 = NC, Pin 6 = GND (exposed pad). This allows single PCB design reuse across multiple output voltages and adjustability options, reducing NRE and qualification effort.