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onsemi NCP717AMX280TCG
- Part No.:
- NCP717AMX280TCG
- Manufacturer:
- onsemi
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
NCP717AMX280TCG.pdf
- Description:
- IC REG LINEAR 2.8V 300MA 4XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,301
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Product details
Overview
NCP717AMX280TCG from onsemi is a 300 mA, fixed 2.8 V low-dropout linear regulator with ultra-low quiescent current (25 µA typ.), 22 µVRMS output noise (100 Hz–100 kHz), and 175 mV typical dropout at full load - designed for noise-sensitive, space-constrained battery-powered systems such as GPS modules and Bluetooth handsets.
For engineers reviewing the NCP717AMX280TCG datasheet, pinout, applications, or equivalent options, key selection criteria include its active output discharge function (1.2 kΩ), ±2% output accuracy over load/line/temperature, stability with 1 µF ceramic output capacitor, and XDFN4 1.0×1.0 mm package compatibility with high-density portable PCB layouts.
Technical Context
The NCP717AMX280TCG integrates a PMOS pass transistor with adaptive ground current control to maintain 25 µA IQ at no-load while delivering 300 mA output. Its internal bandgap reference and error amplifier ensure ±2% output regulation across −40°C to +125°C junction temperature.
It features logic-controlled enable (EN) with 0.9 V turn-on / 0.4 V shutdown thresholds, built-in thermal shutdown (160°C trip), current limiting (379 mA typ.), and active output discharge via integrated 1.2 kΩ pull-down resistor - confirmed exclusively for "A"-suffix variants like NCP717AMX280TCG.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8 V ±2% - stable regulation across load (0–300 mA), line (1.8–5.5 V), and temperature (−40°C to +125°C). |
| Quiescent Current | 25 µA typ. at no-load - enables multi-year battery life in always-on IoT sensors and wearable standby modes. |
| Dropout Voltage | 175 mV typ. at 300 mA - supports operation down to VIN = 2.975 V, critical for single-cell Li-ion (3.0 V min) and coin-cell applications. |
| Output Noise | 22 µVRMS (100 Hz–100 kHz) - meets stringent RF and ADC reference supply requirements without external filtering. |
| PSRR | 70 dB at 1 kHz - suppresses switching regulator ripple 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 and 3.3 V GPIOs; includes 56 mV hysteresis to reject EN pin noise. |
| Active Discharge | 1.2 kΩ pull-down (A-version only) - discharges output within microseconds after shutdown, preventing back-powering of downstream circuitry. |
Pinout & Package
XDFN4 1.0×1.0 mm, 0.65 mm pitch, exposed pad (EPAD) - thermally enhanced for low RθJA (250°C/W) when soldered to GND plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT | Regulated output | Delivers 2.8 V; requires ≥1 µF ceramic capacitor to GND for stability; connects to load and feedback path. |
| 2: GND | Power ground | Reference node for all internal circuits; EPAD must be soldered directly to PCB GND plane for thermal and electrical integrity. |
| 3: EN | Enable control input | Logic-high (>0.9 V) enables regulation; logic-low (<0.4 V) disables output and activates 1.2 kΩ discharge path to GND. |
| 4: IN | Input supply | Accepts 1.8–5.5 V; requires ≥1 µF ceramic capacitor to GND close to pin to suppress input transients and EMI. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ | 25 µA typ. at zero load - extends battery runtime in always-on monitoring nodes without sacrificing regulation performance. |
| Low-noise output | 22 µVRMS noise floor - eliminates need for post-LDO LC filters in precision analog signal chains and RF power amplifiers. |
| Active output discharge | Integrated 1.2 kΩ pull-down (A-version only) - ensures rapid, controlled VOUT decay during power-down, preventing latch-up in multi-rail systems. |
| Stable with 1 µF COUT | No ESR requirement for output capacitor - enables use of small, low-cost 0402/0603 X5R/X7R ceramics, reducing BOM count and board area. |
| Robust protection | Thermal shutdown (160°C), current limit (379 mA), and short-circuit immunity - eliminates need for external fault management circuitry in consumer-grade designs. |
Applications
| GPS Module Power Supply | Bluetooth Audio Transceiver |
|---|---|
Use Scenario: Powers GNSS baseband IC and RF front-end in compact handheld GPS receivers operating from single-cell Li-ion. IC Role / Device Role / Timing Role: Primary 2.8 V supply rail for sensitive analog RF sections and low-jitter clock generation circuitry. Use Value: 22 µVRMS noise and 70 dB PSRR prevent phase noise degradation in LNA/VCO stages, preserving C/N0 and position accuracy. | Use Scenario: Supplies 2.8 V to Bluetooth SoC audio codec and Class-D amplifier in wireless earbuds with tight thermal constraints. IC Role / Device Role / Timing Role: Clean, low-IQ bias rail for audio DAC, headphone driver, and digital core logic. Use Value: Active discharge clears residual charge from output caps during pause/play transitions, eliminating pop/click artifacts in audio output. |
| Portable Medical Sensor Node | Smartphone Camera Module |
Use Scenario: Powers optical heart-rate monitor (PPG) analog front-end and microcontroller in FDA-cleared wearable patches. IC Role / Device Role / Timing Role: Precision 2.8 V reference for ADC biasing and LED driver current sources. Use Value: ±2% output accuracy and <10 mV load regulation ensure consistent LED intensity and ADC gain calibration across battery discharge cycle. | Use Scenario: Supplies 2.8 V to CMOS image sensor and ISP in multi-camera smartphone subsystems. IC Role / Device Role / Timing Role: Low-noise analog supply for pixel array bias and column readout circuitry. Use Value: 175 mV dropout enables operation during deep battery sag (down to 2.975 V), maintaining image quality even at <10% remaining charge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO voltage regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6210B282MR-G | 280 mV dropout at 300 mA; 35 µA IQ; no active discharge; SOT-25 package (2.9×2.8 mm) | Larger footprint; higher dropout limits usable input range; lacks fast discharge for audio sequencing | Select when board space allows larger package and active discharge is unnecessary. |
| Richtek RT9080-28GB | 250 mV dropout; 20 µA IQ; 30 µVRMS noise; WDFN-6L 1.2×1.2 mm; no active discharge | Same functional class but different pinout; no integrated discharge path; slightly lower noise but higher dropout | Choose for ultra-low IQ priority where discharge timing is managed externally. |
Compared with XC6210B282MR-G and RT9080-28GB, the NCP717AMX280TCG uniquely combines ultra-low dropout (175 mV), industry-leading 25 µA IQ, and integrated 1.2 kΩ active discharge in a 1.0×1.0 mm XDFN4 package - making it optimal for miniaturized, battery-critical systems requiring rapid, deterministic power-down behavior.
Availability
NCP717AMX280TCG is available at Aetrix Electronics and suitable for GPS receivers, Bluetooth audio devices, portable medical sensors, and smartphone camera modules requiring stable component supply, long-term lifecycle support, and Pb-free compliance.
Supply support for NCP717AMX280TCG 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP717 series is engineered for ultra-low-power, noise-sensitive portable electronics - emphasizing minimal quiescent current, sub-100 µV noise, and compact packaging to extend battery life and simplify layout in space-constrained designs.
FAQ
What is the output voltage tolerance of the NCP717AMX280TCG over temperature and load?
The NCP717AMX280TCG maintains ±2% output voltage accuracy across −40°C to +125°C junction temperature, 0–300 mA load, and 1.8–5.5 V input voltage range. This is guaranteed by internal bandgap reference and error amplifier design, not just initial calibration - ensuring consistent 2.8 V regulation in real-world thermal and dynamic conditions where the NCP717AMX280TCG operates.
Does the NCP717AMX280TCG support active output discharge, and how does it work?
Yes, the NCP717AMX280TCG includes active output discharge via an internal 1.2 kΩ pull-down resistor between OUT and GND, activated automatically when EN falls below 0.4 V. This feature rapidly discharges the output capacitor to prevent back-powering or unintended operation of downstream circuitry - a capability confirmed only for "A"-suffix variants like the NCP717AMX280TCG per the official datasheet.
What is the minimum output capacitor required for stability with the NCP717AMX280TCG?
The NCP717AMX280TCG is stable with a minimum 1.0 µF ceramic output capacitor (X5R/X7R), and remains stable down to 100 nF with adequate safety margin for DC bias and temperature variation. No ESR requirement exists - enabling use of tiny 0402/0603 MLCCs - a verified design condition documented in the NCP717AMX280TCG datasheet Figure 43 and Applications Information section.
How does the NCP717AMX280TCG achieve ultra-low quiescent current?
The NCP717AMX280TCG employs dynamic quiescent current adjustment: its internal bias circuitry scales ground current based on load demand, achieving 25 µA typical IQ at no-load while maintaining full 300 mA capability. This adaptive architecture - detailed in the NCP717AMX280TCG datasheet Figure 5–10 and Applications Information - avoids trade-offs between standby efficiency and transient response.
Can the NCP717AMX280TCG be used with input voltages below 1.8 V?
No - the absolute minimum input voltage for the NCP717AMX280TCG is 1.8 V, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. Operation below this violates the device's safe operating area; attempting to power the NCP717AMX280TCG from a deeply discharged 1.5 V alkaline cell or sub-1.8 V supercapacitor will result in loss of regulation or undefined behavior.
NCP717AMX280TCG 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):
- 2.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.28V @ 300mA
- 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)
NCP717AMX280TCG FAQ
1.How can I place an order for NCP717AMX280TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP717AMX280TCG 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 NCP717AMX280TCG reliable?
The price and inventory of NCP717AMX280TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP717AMX280TCG is usually 5 days.
3.What payment methods are accepted for NCP717AMX280TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP717AMX280TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP717AMX280TCG?
NCP717AMX280TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP717AMX280TCG 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 NCP717AMX280TCG?
For technical support, including NCP717AMX280TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP717AMX280TCG requirements.
6.How does Aetrix verify that NCP717AMX280TCG is sourced from the original manufacturer or authorized distributors?
All NCP717AMX280TCG 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 NCP717AMX280TCG meets industry standards.
7.What is the process for return or replacement of NCP717AMX280TCG?
All NCP717AMX280TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCP717AMX280TCG, 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 NCP717AMX280TCG part is unused and in its original packaging.
Return procedure for NCP717AMX280TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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