onsemi NCP171AMX080060TCG

Overview

NCP171AMX080060TCG from onsemi is an ultra-low-quiescent-current dual-mode LDO regulator delivering 80 mA in Active Mode and consuming only 50 nA in Low Power Mode. It features factory-programmed 60 mV output voltage offset between modes, operates from 1.7 V to 5.5 V input, and is packaged in a 1.2 mm × 1.2 mm XDFN4 package - ideal for battery-powered IoT sensors requiring long operational life and dynamic power-state switching.

For engineers reviewing the NCP171AMX080060TCG datasheet, pinout, applications, or equivalent options, key selection criteria include its 50 nA low-power I_Q, 60 mV factory-set voltage scaling, ECO-pin-controlled mode transition, ±2% output accuracy in Active Mode, and thermal shutdown protection - all validated for use in space-constrained, energy-critical embedded systems.

Technical Context

The NCP171AMX080060TCG implements a dual-path internal architecture with separate low-power and active-mode regulation circuits, enabling dynamic switching via the ECO pin. Its voltage scaling is fixed at 60 mV (as indicated by the "060" suffix), meaning the Low Power Mode output is precisely 60 mV below the nominal 0.8 V Active Mode output (i.e., 0.74 V).

It integrates active output discharge (R_DS(on) ≈ 50 Ω), current limiting (140–170 mA in Active Mode), and thermal shutdown at 165 °C with 20 °C hysteresis. The device defaults to Active Mode for 35 ms at startup regardless of ECO state to ensure stable capacitor charging and load initialization.

Key Specifications

Pinout & Package

Package: XDFN4, 1.2 mm × 1.2 mm, 0.4 mm height, exposed thermal pad (Pin 5/EP = GND). RoHS-compliant, halogen-free.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP1703T-0802E/MB and XC6210B082MR-G, the NCP171AMX080060TCG uniquely delivers 50 nA quiescent current with factory-programmed 60 mV voltage scaling and ECO-controlled dual-mode operation - making it the only option capable of supporting decade-long battery life with adaptive voltage management in compact IoT nodes.

Availability

NCP171AMX080060TCG is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical monitors, RFID peripherals, and ultra-low-power MCU supply applications requiring stable component supply, long-lifecycle support, and guaranteed traceability.

Supply support for NCP171AMX080060TCG 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 supplier focused on energy-efficient innovation for automotive, industrial, cloud, and IoT applications.

The NCP171AMX080060TCG belongs to the SLIQ (Super Low I_Q) LDO family, designed specifically for battery-powered edge devices demanding nanoscale quiescent current, precise voltage scaling, and robust thermal behavior in miniature packages.

FAQ

What is the exact output voltage of NCP171AMX080060TCG in Active and Low Power Modes?

The NCP171AMX080060TCG has a nominal Active Mode output voltage of 0.8 V (±2% over temperature). Its Low Power Mode output is factory-programmed to be exactly 60 mV lower - i.e., 0.74 V - with the same ±2% tolerance. This 60 mV offset is encoded in the "060" portion of the part number and cannot be adjusted externally.

How does the ECO pin control mode switching on NCP171AMX080060TCG?

The ECO pin on NCP171AMX080060TCG functions as a digital control input: pulling ECO ≤ 0.2 V (logic low) forces Low Power Mode (50 nA I_Q), while driving ECO ≥ 0.5 V (logic high) selects Active Mode (80 mA capability). The transition is immediate and does not require debouncing; the device defaults to Active Mode for 35 ms at power-up regardless of ECO state.

Does NCP171AMX080060TCG support active output discharge, and how does it behave?

Yes, NCP171AMX080060TCG includes an integrated active output discharge transistor. When the ENA pin is driven below 0.4 V (disable state), the internal NMOS connects OUT to GND with R_DS(on) ≈ 50 Ω, rapidly discharging the output capacitor. This feature ensures predictable, fast turn-off and prevents floating outputs that could cause downstream latch-up or leakage.

What is the maximum input voltage rating and thermal limit for NCP171AMX080060TCG?

The absolute maximum input voltage for NCP171AMX080060TCG is 6.0 V, and its thermal shutdown activates at 165 °C with 20 °C hysteresis. The device's thermal resistance (R_JA) is 170 °C/W on a standard 40 mm × 40 mm FR4 board with 2-ounce copper. Exceeding 85 °C junction temperature continuously may impact long-term reliability - proper PCB thermal pad layout is essential.

Can NCP171AMX080060TCG be used with ceramic output capacitors, and what value is recommended?

Yes, NCP171AMX080060TCG is optimized for 1.0 µF ceramic output capacitors (X5R/X7R), which must be placed as close as possible to the OUT and GND pins. Larger values up to 4.7 µF are permissible for improved transient response, but parallel ceramic capacitors should be avoided as they may induce instability. Tantalum capacitors are not recommended due to their higher ESR.