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onsemi NCP717AMX190TCG
- Part No.:
- NCP717AMX190TCG
- Manufacturer:
- onsemi
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
NCP717AMX190TCG.pdf
- Description:
- IC REG LINEAR 1.9V 300MA 4XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,459
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Product details
Overview
NCP717AMX190TCG from onsemi is a 300 mA, fixed 1.9 V output low-dropout (LDO) regulator in XDFN-4 1.0×1.0 mm package, featuring 25 µA typical quiescent current, 22 µVRMS output noise (100 Hz–100 kHz), and 175 mV typical dropout at 300 mA - optimized for battery-powered portable electronics requiring ultra-low power and high noise immunity.
For engineers reviewing the NCP717AMX190TCG datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, EN-controlled active output discharge (1.2 kΩ), ±2% output accuracy over load/line/temperature, thermal shutdown, and stable operation with 1 µF ceramic output capacitor - critical for space-constrained, noise-sensitive designs.
Technical Context
The NCP717AMX190TCG employs a PMOS pass transistor with adaptive quiescent current control to maintain 25 µA IQ at no-load while delivering full 300 mA output. Its internal bandgap reference and error amplifier ensure tight regulation across −40°C to +125°C junction temperature.
It integrates enable logic with 0.4 V low-threshold and 0.9 V high-threshold, plus an active discharge MOSFET (RDIS = 1.2 kΩ) that pulls OUT to GND during shutdown - a feature confirmed only for "A" and "C" suffix variants per datasheet Figure 2 and PIN FUNCTION DESCRIPTION.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.9 V ±2% over load/line/temperature - ensures stable core or I/O rail for low-voltage microcontrollers and sensors. |
| Max Output Current | 300 mA continuous - supports moderate-power RF modules, display drivers, or sensor signal chains without thermal derating under typical PCB layout. |
| Dropout Voltage | 175 mV typical at 300 mA - enables operation from 2.075 V input (e.g., single Li-ion cell at end-of-discharge) while maintaining regulation. |
| Quiescent Current | 25 µA typical at no-load - extends battery life in always-on wearable or IoT edge nodes with infrequent wake-up cycles. |
| Output Noise | 22 µVRMS (100 Hz–100 kHz) - meets stringent noise requirements for ADC references, RF synthesizers, and precision analog front-ends. |
| PSRR | 70 dB at 1 kHz - suppresses switching noise from upstream DC-DC converters feeding the LDO input. |
| Enable Threshold | VEN_HI = 0.9 V, VEN_LO = 0.4 V - compatible with 1.8 V GPIO logic and provides 56 mV hysteresis to reject EN pin noise. |
| Active Discharge | 1.2 kΩ pull-down on OUT during shutdown - prevents floating output and ensures fast, controlled voltage decay for system sequencing. |
Pinout & Package
XDFN-4 1.0×1.0 mm package (Case 711AJ) with exposed thermal pad (EPAD) soldered to GND plane for enhanced thermal dissipation - RJA = 250°C/W in standard JEDEC 2-layer board conditions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT | Regulated output voltage node | Connect ≥1 µF ceramic capacitor to GND; trace resistance must be minimized to preserve ±2% load regulation. |
| 2: GND | Power ground reference | Return path for load current and bias; EPAD must be soldered directly to this node for thermal and EMI performance. |
| 3: EN | Logic-enable control input | Pull >0.9 V to enable; <0.4 V to disable; internal 180 nA pull-down ensures default OFF if left floating. |
| 4: IN | Input supply connection | Accepts 1.8–5.5 V; requires ≥1 µF ceramic capacitor close to pin to suppress input ripple and support transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 25 µA typical at zero load - enables multi-year battery life in coin-cell-powered devices like Bluetooth LE sensors. |
| Low-noise regulation | 22 µVRMS output noise - eliminates need for external filtering in audio codec or high-resolution SAR ADC power rails. |
| Active output discharge | 1.2 kΩ internal pull-down activated during EN=LOW - ensures rapid, predictable VOUT decay for safe power sequencing in multi-rail systems. |
| Stability with minimal capacitance | Stable with 1 µF ceramic COUT (no ESR requirement) - reduces BOM count and PCB area vs. traditional LDOs needing tantalum or high-ESR caps. |
| Robust protection suite | Thermal shutdown (160°C), current limit (~379 mA), and short-circuit tolerance - eliminates need for external fault management circuitry. |
| Wide input voltage range | 1.8 V to 5.5 V operation - supports direct connection to single-cell Li-ion, 3.3 V system rails, or USB-powered inputs without pre-regulation. |
Applications
| Wearable Health Monitor | Bluetooth Low Energy Module |
|---|---|
|
Use Scenario: Continuous ECG/PPG sensing with ultra-low-power MCU and analog front-end. IC Role / Device Role / Timing Role: Provides clean, stable 1.9 V supply to ADC reference and op-amp bias circuits. Use Value: 22 µVRMS noise and ±2% accuracy prevent baseline drift and quantization errors in sub-µV biomedical signals. |
Use Scenario: Powering BLE SoC (e.g., nRF52832) RF section and digital core from shared Li-ion battery. IC Role / Device Role / Timing Role: Delivers regulated 1.9 V to RF transceiver while rejecting switching noise from buck converter supplying MCU core. Use Value: 70 dB PSRR at 1 kHz suppresses DC-DC ripple, preventing RX sensitivity degradation and TX spectral mask violations. |
| Industrial Wireless Sensor Node | Smart Home Motion Detector |
|
Use Scenario: Battery-operated vibration sensor node transmitting data via LoRaWAN every 5 minutes. IC Role / Device Role / Timing Role: Supplies 1.9 V to MEMS accelerometer and ultra-low-power microcontroller in sleep mode. Use Value: 25 µA quiescent current minimizes self-discharge, enabling >5-year operation on a single CR2032 cell. |
Use Scenario: PIR-based occupancy detector with always-on wake-up logic and periodic IR LED pulsing. IC Role / Device Role / Timing Role: Powers PIR signal conditioning and comparator circuit with fast turn-on (<200 µs) and active discharge on wake-up exit. Use Value: 1.2 kΩ active discharge ensures VOUT decays within 10 µs after EN deassertion, eliminating false triggers from residual voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1902E/TT | 250 mA max output, 1.9 V fixed, 1.6 µA IQ, no active discharge, SOT-23-5 package | Lacks active discharge and higher noise (40 µVRMS) - unsuitable where fast VOUT decay or ultra-low noise is required. | Select when lowest possible IQ dominates and active discharge is unnecessary; verify thermal margin at 300 mA. |
| Torex XC6219B192MR-G | 300 mA max output, 1.9 V fixed, 35 µA IQ, no active discharge, SOT-25 package | Higher IQ and no discharge function; PSRR peaks at 60 dB (1 kHz) - less effective against mid-frequency ripple. | Choose for cost-sensitive designs where footprint flexibility (SOT-25) outweighs discharge and noise advantages of NCP717AMX190TCG. |
Compared with MCP1700T-1902E/TT and XC6219B192MR-G, the NCP717AMX190TCG uniquely combines 300 mA capability, 25 µA IQ, 22 µVRMS noise, and 1.2 kΩ active discharge in a 1.0×1.0 mm XDFN - making it optimal for miniaturized, noise-critical, and sequenced-power systems.
Availability
NCP717AMX190TCG is available at Aetrix Electronics and suitable for wearable health monitors, Bluetooth LE modules, industrial wireless sensor nodes, and smart home motion detectors requiring stable component supply, long-term lifecycle support, and Pb-free compliance.
Supply support for NCP717AMX190TCG 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 focused on energy-efficient electronics, delivering silicon solutions for automotive, industrial, cloud, and IoT markets.
The NCP717 product line targets ultra-low-power, noise-sensitive portable applications - designed specifically to extend battery life while maintaining precision regulation in space-constrained layouts.
FAQ
What is the output voltage tolerance of the NCP717AMX190TCG over temperature and load?
The NCP717AMX190TCG maintains ±2% output voltage accuracy across −40°C to +125°C junction temperature, 0–300 mA load, and input voltage range of VOUT(nom) + 0.5 V or 2.3 V (whichever is greater) to 5.5 V. This is specified in the Electrical Characteristics table under "Output Voltage Accuracy" and validated by Figures 1–6 showing VOUT vs. temperature curves for multiple output voltages including 1.9 V.
Does the NCP717AMX190TCG include active output discharge, and how does it function?
Yes, the NCP717AMX190TCG includes active output discharge - confirmed by the "A" suffix in its part number and explicitly stated in the datasheet's PIN FUNCTION DESCRIPTION and APPLICATIONS INFORMATION sections. When EN is driven below 0.4 V, an internal transistor pulls OUT to GND through a 1.2 kΩ resistor, ensuring rapid and controlled discharge of the output capacitor.
What is the minimum output capacitor required for stability with the NCP717AMX190TCG?
The NCP717AMX190TCG is stable with a minimum 1.0 µF ceramic output capacitor (X5R/X7R), as stated in the Features list and APPLICATIONS INFORMATION section. The datasheet confirms stability down to 100 nF, but recommends 1.0 µF to provide margin against capacitance loss due to DC bias, temperature, and initial tolerance - no ESR requirement is imposed.
How does the NCP717AMX190TCG achieve ultra-low quiescent current, and what is its value at no load?
The NCP717AMX190TCG achieves 25 µA typical quiescent current at no load using dynamic IQ adjustment - an adaptive bias technique that scales internal current consumption with output loading. This is documented in the Features list, Electrical Characteristics table (under "Ground Current"), and APPLICATIONS INFORMATION section, which states "adaptive ground current feature" enables ultra-low IQ in battery-critical applications.
What protection features are integrated into the NCP717AMX190TCG?
The NCP717AMX190TCG integrates thermal shutdown (160°C trip, 140°C hysteresis), output current limiting (~379 mA at 100 mV drop), short-circuit protection (390 mA typical), and reverse-current blocking via its PMOS pass device. All protections are detailed in the Features list, Absolute Maximum Ratings, Electrical Characteristics, and APPLICATIONS INFORMATION sections - no external components are needed for basic fault resilience.
NCP717AMX190TCG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 4-XDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.9V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 35 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-XDFN (1x1)
NCP717AMX190TCG FAQ
1.How can I place an order for NCP717AMX190TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP717AMX190TCG on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for NCP717AMX190TCG reliable?
The price and inventory of NCP717AMX190TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP717AMX190TCG is usually 5 days.
3.What payment methods are accepted for NCP717AMX190TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP717AMX190TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP717AMX190TCG?
NCP717AMX190TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP717AMX190TCG order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for NCP717AMX190TCG?
For technical support, including NCP717AMX190TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP717AMX190TCG requirements.
6.How does Aetrix verify that NCP717AMX190TCG is sourced from the original manufacturer or authorized distributors?
All NCP717AMX190TCG products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that NCP717AMX190TCG meets industry standards.
7.What is the process for return or replacement of NCP717AMX190TCG?
All NCP717AMX190TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCP717AMX190TCG, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The NCP717AMX190TCG part is unused and in its original packaging.
Return procedure for NCP717AMX190TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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