onsemi NCP562SQ28T1

Overview

NCP562SQ28T1 from onsemi is a fixed-output, low-dropout linear voltage regulator with 2.8 V output, 80 mA output current capability, 2.5 µA typical quiescent current, and an enable pin for ON/OFF control-designed for battery-powered portable instruments requiring ultra-low standby power.

For engineers reviewing the NCP562SQ28T1 datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at 80 mA (230 mV), ±2.0% output voltage accuracy, SC82-AB package footprint compatibility, and thermal shutdown protection for embedded power management in space-constrained designs.

Technical Context

The NCP562SQ28T1 integrates a PMOS pass transistor, precision voltage reference, error amplifier, and internal current/temperature limit protection circuits. It operates across −40 °C to +85 °C ambient temperature and supports input voltages up to 6.0 V.

Its enable input (pin 4) provides logic-level ON/OFF control with 1.3 V turn-on threshold and 0.3 V turn-off threshold; unused enable must be tied to Vin. The device achieves stability with ≥0.1 µF ceramic output capacitance and requires no ESR tuning.

Key Specifications

Pinout & Package

The NCP562SQ28T1 is housed in the SC82-AB (Case 419C) surface-mount package: 2.2 mm × 1.35 mm × 0.95 mm, 4-pin, lead-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NCP562SQ28T1, MCP1700T-2802E/TT offers lower quiescent current but no enable function or thermal protection, while TPS70628DBVR adds active-low enable and higher current but increases board area and standby power-making NCP562SQ28T1 optimal for compact, enable-controlled, ultra-low-power 2.8 V rails.

Availability

NCP562SQ28T1 is available at Aetrix Electronics and suitable for portable medical sensors, wearable fitness trackers, industrial handheld scanners, and smart remote controls requiring stable component supply with long-lifecycle support.

Supply support for NCP562SQ28T1 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The NCP562 series belongs to onsemi's low-power linear regulator product line, engineered specifically for battery-operated portable electronics where ultra-low quiescent current and minimal board space are critical design constraints.

FAQ

What is the maximum input voltage rating for the NCP562SQ28T1?

The NCP562SQ28T1 has a maximum input voltage rating of 6.0 V, as specified in its Absolute Maximum Ratings table. Exceeding this voltage may cause permanent damage. This rating allows safe operation from common sources including single-cell Li-ion (4.2 V max), dual alkaline (3.2 V fresh), or USB 5 V with margin. The device maintains regulation down to Vin = Vout + dropout (3.03 V minimum for 2.8 V output at 80 mA), making it robust across battery discharge profiles.

Does the NCP562SQ28T1 require an external output capacitor, and what value is recommended?

Yes, the NCP562SQ28T1 requires an external output capacitor for stability and transient performance. The datasheet specifies a minimum value of 0.1 µF ceramic (X5R/X7R), with 1.0 µF recommended for improved line/load transient response. Unlike many LDOs, it imposes no ESR requirements-enabling use of low-ESR MLCCs without risk of oscillation. For the NCP562SQ28T1, placing the capacitor within 2 mm of pins 3 (Vout) and 1 (GND) is critical to maintain noise immunity and regulation accuracy.

What is the function of the enable pin on the NCP562SQ28T1, and how should it be handled if unused?

The enable pin (pin 4) on the NCP562SQ28T1 provides active-high digital control: pulling it ≥1.3 V turns the regulator ON, while pulling it ≤0.3 V places it in ultra-low-quiescent standby (<1 µA). If unused, the pin must be connected directly to Vin-not left floating-to ensure reliable operation. This differs from NCP563 variants (which lack enable), making the NCP562SQ28T1 uniquely suited for systems requiring software-controlled power sequencing or dynamic power gating.

How accurate is the output voltage of the NCP562SQ28T1 over temperature and load?

The NCP562SQ28T1 guarantees ±2.0% output voltage accuracy over temperature (−40 °C to +85 °C) and load (1 mA to 80 mA), as confirmed in its Electrical Characteristics table. At 25 °C and 1 mA load, typical output is 2.8 V with min/max bounds of 2.744 V and 2.856 V. Load regulation contributes ≤40 mV shift from 10 mA to 80 mA, and line regulation adds ≤20 mV across Vin = 3.8 V to 6.0 V-ensuring predictable 2.8 V rail behavior in real-world operating conditions.

Is the NCP562SQ28T1 suitable for automotive applications?

The NCP562SQ28T1 is not AEC-Q100 qualified and is not intended for automotive use. For automotive-grade equivalents, onsemi offers the NCV562SQ28T1G (NCV prefix), which is AEC-Q100 qualified, PPAP-capable, and manufactured under automotive-specific process controls. The NCP562SQ28T1 is rated for −40 °C to +85 °C ambient operation-suitable for industrial and consumer portable equipment-but lacks the extended temperature range, qualification testing, and change-control rigor required for automotive ECUs or infotainment modules.