onsemi NCP707CMX280TCG

Overview

NCP707CMX280TCG from onsemi is a 200 mA low-dropout (LDO) voltage regulator with fixed 2.8 V output, optimized for battery-powered portable electronics. It delivers ±2% output accuracy over load/line/temperature, features 100 mV typical dropout at 200 mA, 22 µV_RMS output noise (100 Hz–100 kHz), and ultra-low 25 µA quiescent current at no-load - enabling extended runtime in space-constrained, noise-sensitive applications like Bluetooth headsets and medical wearables.

For engineers reviewing the NCP707CMX280TCG datasheet, pinout, applications, or equivalent options, key selection criteria include its XDFN-4 1.0×1.0 mm package, active output discharge function (R_DIS = 120 Ω), EN pin logic control (0.4 V low threshold), and stability with only 1 µF ceramic output capacitance - critical for compact, low-noise power rail design.

Technical Context

The NCP707CMX280TCG employs a PMOS pass transistor architecture enabling reverse-current blocking and inherent dropout voltage scaling with output current. Its adaptive ground current circuitry dynamically reduces IQ to 25 µA at zero load while maintaining regulation, and integrates thermal shutdown (160°C trip, 20°C hysteresis) and foldback current limiting (379 mA typ.) for robust fault protection.

It supports enable-controlled sequencing via a dedicated EN pin with built-in 180 nA pull-down and 56 mV hysteresis, ensuring noise-immune ON/OFF transitions. The device's active output discharge (enabled only in "C" suffix variants) rapidly pulls VOUT to GND through a 120 Ω internal resistor when disabled - preventing floating outputs in multi-rail systems.

Key Specifications

Pinout & Package

Package: XDFN-4 1.0 mm × 1.0 mm, 0.4 mm pitch, exposed thermal pad (EPAD) - optimized for high-density PCB layouts and thermal performance on 2 oz copper.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP1700T-2802E/TT and XC6206P282MR-G, the NCP707CMX280TCG uniquely combines 200 mA output, 25 µA IQ, EN control, and 120 Ω active discharge in a 1.0×1.0 mm XDFN - making it optimal for space-constrained, sequenced, and noise-sensitive designs.

Availability

NCP707CMX280TCG is available at Aetrix Electronics and suitable for wireless headsets, portable medical monitors, smartwatch displays, and industrial sensor nodes requiring stable component supply with guaranteed long-term availability.

Supply support for NCP707CMX280TCG 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 is a global semiconductor leader delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The NCP707 series is designed specifically for ultra-low-power, noise-sensitive portable electronics - emphasizing minimal quiescent current, small footprint, and integrated protection for battery-operated devices.

FAQ

What is the maximum input voltage for the NCP707CMX280TCG?

The NCP707CMX280TCG supports an absolute maximum input voltage of 6 V, with recommended operating range from 1.8 V to 5.5 V. Operation above 5.5 V risks permanent damage; for 3.3 V system inputs, the 100 mV dropout ensures reliable 2.8 V output even under worst-case line drop.

Does the NCP707CMX280TCG require an external capacitor on the EN pin?

No, the NCP707CMX280TCG does not require an external capacitor on the EN pin. Its internal EN circuit includes 56 mV hysteresis and deglitch timing to reject noise - eliminating need for RC filtering. However, a 100 kΩ pull-up to IN is recommended if EN is driven by open-drain logic.

Can the NCP707CMX280TCG be used without an output capacitor?

No, the NCP707CMX280TCG requires a minimum 100 nF ceramic output capacitor for stability, with 1 µF recommended for full specification compliance. Omitting COUT causes oscillation and loss of regulation; tantalum capacitors are not recommended due to high ESR.

What is the purpose of the exposed pad (EPAD) on the NCP707CMX280TCG package?

The EPAD on the NCP707CMX280TCG is electrically connected to GND and serves as the primary thermal path. It must be soldered to a large PCB GND copper area to achieve the specified 250°C/W junction-to-air thermal resistance - critical for sustaining 200 mA output at elevated ambient temperatures.

How does the active output discharge function work in the NCP707CMX280TCG?

When the EN pin is pulled below 0.4 V, the NCP707CMX280TCG disables regulation and activates an internal 120 Ω NMOS discharge path between OUT and GND. This rapidly discharges the output capacitor - typically within 1 ms for a 1 µF load - preventing back-powering of upstream circuits or unintended wake-up events.