onsemi NCP707CMX250TCG

Overview

NCP707CMX250TCG from onsemi is a 200 mA low-dropout (LDO) regulator with fixed 2.5 V output, ultra-low 25 µA quiescent current, 22 µV_RMS output noise (100 Hz–100 kHz), and 100 mV typical dropout at full load - designed for noise-sensitive, space-constrained battery-powered systems such as GPS modules and portable medical sensors.

For engineers reviewing the NCP707CMX250TCG datasheet, pinout, applications, or equivalent options, key selection criteria include its active output discharge function (120 Ω), ±2% output accuracy over load/line/temperature, stable operation with 1 µF ceramic output capacitor, and XDFN 1.0 × 1.0 mm package compatibility with high-density PCB layouts.

Technical Context

The NCP707CMX250TCG 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 no-load while maintaining regulation across 1.8–5.5 V input range.

It integrates thermal shutdown (160°C trip, 20°C hysteresis), current limiting (~379 mA typ.), and an enable-controlled active output discharge path (120 Ω pull-down to GND when EN < 0.4 V). The EN pin features 180 nA internal pull-down and 56 mV hysteresis to suppress noise-induced toggling.

Key Specifications

Pinout & Package

Package: XDFN-4 (1.0 mm × 1.0 mm, 0.4 mm height), case 711AJ, exposed thermal pad (EPAD) requiring direct connection to PCB ground plane for thermal performance (R_JA = 250°C/W on 2 oz FR4 with 100 mm² copper).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP1700T-2502E/TT and XC6210B252MR-G, the NCP707CMX250TCG uniquely combines ultra-low noise (22 µV_RMS), active discharge (120 Ω), and XDFN thermal performance in a 1.0×1.0 mm footprint - making it optimal for compact, noise-critical, multi-rail battery systems requiring controlled power-down sequencing.

Availability

NCP707CMX250TCG is available at Aetrix Electronics and suitable for GPS receivers, portable medical sensors, Bluetooth LE audio devices, and industrial wireless sensor nodes requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for NCP707CMX250TCG 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 (Nasdaq: ON) 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 part of onsemi's precision analog portfolio, engineered specifically for ultra-low-noise, ultra-low-IQ power management in portable and battery-constrained edge devices - emphasizing thermal efficiency, small-footprint integration, and robust protection.

FAQ

What is the output voltage tolerance of the NCP707CMX250TCG over temperature and load?

The NCP707CMX250TCG maintains ±2% output voltage accuracy across −40°C to +125°C junction temperature, 0–200 mA load current, and input voltage from (VOUT + 0.5 V) to 5.5 V. This is verified per Electrical Characteristics table on page 3 of the datasheet, ensuring consistent 2.5 V regulation for precision analog circuits without external trimming.

Does the NCP707CMX250TCG support active output discharge, and what is its resistance value?

Yes, the NCP707CMX250TCG includes active output discharge functionality activated when the EN pin is driven below 0.4 V. Its discharge path uses a 120 Ω internal NMOS transistor to pull the OUT pin to GND, enabling rapid discharge of output capacitance - critical for safe power sequencing in multi-supply systems. This feature is exclusive to "C" suffix variants like NCP707CMX250TCG.

What minimum output capacitor is required for stability with the NCP707CMX250TCG?

The NCP707CMX250TCG is guaranteed stable with a minimum 1.0 µF ceramic (X5R/X7R) output capacitor. The datasheet specifies no minimum ESR requirement but caps maximum ESR at 700 mΩ. Using smaller capacitors (e.g., 100 nF) risks instability due to insufficient phase margin, especially under varying load conditions.

Can the NCP707CMX250TCG operate from a 1.8 V input supply?

Yes, the NCP707CMX250TCG supports input voltages as low as 1.8 V, but regulation to 2.5 V is only possible when VIN ≥ (VOUT + dropout). At 200 mA load, dropout is 135 mV typ., so minimum functional VIN is ~2.635 V. At 1.8 V input, the device enters dropout and cannot sustain 2.5 V output - it remains operational but delivers reduced VOUT proportional to VIN minus dropout loss.

How does the enable pin (EN) behave when left floating on the NCP707CMX250TCG?

The EN pin of the NCP707CMX250TCG features an internal 180 nA pull-down current source, ensuring the device remains disabled (output off, active discharge engaged) when the pin is unconnected. This fail-safe behavior prevents unintended power-up in systems with undriven control lines, eliminating need for external pull-down resistors in most designs.