onsemi NCP115CMX100TCG

Overview

NCP115CMX100TCG from onsemi is a 300 mA, 1.0 V fixed-output low-dropout linear regulator in XDFN4 package, featuring 70 dB PSRR at 1 kHz, ±1% output accuracy at room temperature, and active output discharge with 100 Ω discharge resistance - designed for noise-sensitive battery-powered applications such as smartphone camera modules and portable medical sensors.

For engineers reviewing the NCP115CMX100TCG datasheet, pinout, applications, or equivalent options, key selection criteria include its slow slew-rate (20 mV/s) for controlled power-up sequencing, 50 µA typical quiescent current, thermal shutdown at 160°C, and compatibility with 1 µF ceramic output capacitors without ESR requirements.

Technical Context

The NCP115CMX100TCG implements a PMOS pass transistor architecture with dynamic quiescent current adjustment to maintain ultra-low IQ across load conditions. Its internal bandgap reference and MOSFET driver support ±1% output voltage accuracy over −40°C to +85°C, while integrated thermal shutdown (160°C trip, 20°C hysteresis) and current limiting (600 mA typ.) ensure robust operation under fault conditions.

This variant belongs to the "C" family (slow slew-rate, active discharge), distinguishing it from "A/B" (normal slew-rate) and "D" variants. It delivers 250 mV typical dropout at 300 mA when VOUT = 2.8 V, but for the NCP115CMX100TCG's 1.0 V output, dropout is characterized at 425–560 mV (XDFN4, 300 mA), enabling stable regulation from as low as 1.7 V input.

Key Specifications

Pinout & Package

XDFN4 (Case 711AJ), 1.0 mm × 1.0 mm, 0.65 mm pitch, exposed thermal pad (EPAD) - optimized for space-constrained PCBs; EPAD must be soldered directly to GND plane for thermal performance (R_JA = 208°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP1804T-1002E/MB and XC6210B102MR-G, the NCP115CMX100TCG uniquely combines 300 mA capability, active discharge, and programmable slow slew-rate - making it the only choice for camera modules and systems requiring controlled power sequencing and fault-safe shutdown.

Availability

NCP115CMX100TCG is available at Aetrix Electronics and suitable for smartphone camera modules, portable medical sensors, wearable fitness trackers, and IoT edge node microcontrollers requiring stable component supply with full traceability and lifecycle management.

Supply support for NCP115CMX100TCG 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 manufacturer specializing in energy-efficient power management, analog, and sensor solutions for automotive, industrial, and consumer markets.

The NCP115 series was engineered specifically for space-constrained, battery-powered portable electronics - prioritizing ultra-low quiescent current, high PSRR, and robust protection features without compromising small-footprint packaging.

FAQ

What is the output voltage tolerance of the NCP115CMX100TCG over temperature?

The NCP115CMX100TCG maintains ±1% output voltage accuracy at room temperature (25°C). Over the full operating junction temperature range (−40°C to +85°C), output voltage deviation is specified as ±40 mV for VOUT ≤ 2.0 V - which applies directly to its 1.0 V output. This ensures stable biasing for precision analog circuits across environmental extremes.

Does the NCP115CMX100TCG require an external resistor divider for output voltage setting?

No, the NCP115CMX100TCG is a fixed-output LDO with factory-trimmed 1.0 V regulation. It does not use an external feedback network - eliminating resistor matching errors, board space, and temperature drift associated with adjustable configurations. All compensation and reference trimming are internal.

Can the NCP115CMX100TCG operate with input voltage below 1.7 V?

No - the absolute minimum operating input voltage for the NCP115CMX100TCG is 1.7 V, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. Operation below this threshold may result in unregulated output or device malfunction. For sub-1.7 V inputs, a different regulator architecture (e.g., charge pump or buck-boost) is required.

How does the active output discharge function work in the NCP115CMX100TCG?

When the EN pin is driven below 0.4 V, the NCP115CMX100TCG disables regulation and activates an internal 100 Ω NMOS discharge FET between OUT and GND. This safely discharges downstream capacitance - for example, a 10 µF load cap decays to <100 mV in ~500 µs - preventing back-powering of upstream circuitry or unintended wake-up events.

Is the NCP115CMX100TCG compatible with 0402-size 1 µF ceramic output capacitors?

Yes - the NCP115CMX100TCG is explicitly characterized for stability with 1 µF X5R/X7R ceramic capacitors, including compact 0402 packages. Its internal compensation accounts for capacitance derating due to DC bias, ensuring phase margin >45° even when effective COUT drops to 0.47 µF - a common condition for 0402 1 µF MLCCs at 1.0 V bias.