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onsemi NCP717CMX330TBG
- Part No.:
- NCP717CMX330TBG
- Manufacturer:
- onsemi
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
NCP717CMX330TBG.pdf
- Description:
- IC REG LINEAR 3.3V 300MA 4XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,539
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Product details
Overview
NCP717CMX330TBG from onsemi is a 300 mA, fixed 3.3 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), 155 mV typical dropout at 300 mA, ±2% output accuracy over load/line/temperature, and integrated thermal shutdown and current limiting - designed for noise-sensitive, space-constrained portable electronics.
For engineers reviewing the NCP717CMX330TBG datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low IQ for battery longevity, low-noise regulation for RF/analog circuits, stable operation with 1 µF ceramic output capacitor, and active output discharge (120 Ω) enabled by the EN pin.
Technical Context
The NCP717CMX330TBG employs a PMOS pass transistor architecture enabling reverse-current blocking and low dropout voltage. Its adaptive ground current circuitry dynamically reduces IQ to 25 µA at no-load while maintaining regulation, critical for standby power optimization in portable systems.
It integrates an enable-controlled active output discharge path (120 Ω) that pulls VOUT to GND during shutdown - a feature confirmed for "C"-suffix variants like NCP717CMX330TBG per datasheet Section "PIN FUNCTION DESCRIPTION" and Ordering Information table. The EN pin has 180 nA internal pull-down and 56 mV hysteresis to prevent noise-induced toggling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±2% - ensures stable rail for 3.3 V logic, RF transceivers, and analog sensors without external feedback. |
| Max Output Current | 300 mA continuous - supports moderate-power microcontrollers, Bluetooth modules, and sensor hubs. |
| Quiescent Current | 25 µA typ. at no-load - extends battery life in always-on wearable and IoT edge nodes. |
| Dropout Voltage | 155 mV typ. at 300 mA - enables regulation from 3.455 V input, compatible with single-cell Li-ion (3.6 V nominal) or 3.6 V supply rails. |
| Output Noise | 22 µVRMS (100 Hz–100 kHz) - meets stringent noise requirements for ADC references, RF LNA biasing, and audio codecs. |
| PSRR | 70 dB at 1 kHz - suppresses switching noise from DC-DC converters feeding the LDO input. |
| Enable Threshold | VEN_HI = 0.9 V, VEN_LO = 0.4 V - compatible with 1.8 V/3.3 V GPIOs; internal 180 nA pull-down ensures default-off state. |
| Active Discharge | 120 Ω discharge path - rapidly discharges output capacitance (<1 ms for 1 µF) to prevent residual voltage hold-up in power sequencing. |
Pinout & Package
Package: XDFN-4 1.0×1.0 mm, 0.65 mm pitch, exposed pad (EPAD) for thermal dissipation. RoHS-compliant, Pb-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Regulated output | Delivers 3.3 V; requires ≥1 µF ceramic capacitor to GND for stability; connects to load and feedback path. |
| 2 - GND | Power ground | Reference return for IN, OUT, and EN; EPAD must be soldered directly to this node 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 120 Ω discharge to GND. |
| 4 - IN | Input supply | Accepts 1.8–5.5 V; requires ≥1 µF ceramic bypass capacitor close to pin to suppress input ripple and transients. |
| EPAD | Thermal & electrical ground | Must be connected to PCB GND plane; primary heat conduction path - improves θJA from 250°C/W to ~120°C/W with 200 mm² copper. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 25 µA typ. at zero load - enables >1-year battery life in coin-cell-powered IoT sensors. |
| Low-noise regulation | 22 µVRMS output noise - eliminates need for additional LC filtering in precision analog signal chains. |
| Active output discharge | 120 Ω internal discharge FET - ensures rapid, controlled VOUT ramp-down during power-off, preventing back-powering of upstream circuitry. |
| Stable with minimal capacitance | Guaranteed stability with 1 µF X7R/X5R ceramic output capacitor - reduces BOM count and board area vs. legacy LDOs requiring 10–22 µF. |
| Robust protection suite | Thermal shutdown (160°C), current limit (~379 mA), and short-circuit tolerance - enables reliable operation in unattended embedded deployments. |
Applications
| Wearable Health Monitor | Bluetooth LE Sensor Node |
|---|---|
Use Scenario: Continuous ECG/PPG sensing powered by CR2032 coin cell with multi-week runtime requirement. IC Role / Device Role / Timing Role: Primary 3.3 V power rail regulator for analog front-end, MCU, and BLE radio - delivering ultra-low-noise bias and minimizing standby current. Use Value: 25 µA IQ extends battery life beyond 12 months; 22 µVRMS noise prevents baseline drift in high-gain bio-amplifiers. | Use Scenario: Compact environmental sensor (temp/humidity/pressure) transmitting data every 5 seconds via Bluetooth 5.0. IC Role / Device Role / Timing Role: Main system LDO supplying 3.3 V to MCU and radio; EN pin synchronized with BLE transmit bursts to minimize average current. Use Value: Active 120 Ω discharge clears output capacitance between transmissions, eliminating leakage-induced voltage hold-up and ensuring clean wake-up timing. |
| Portable Medical Ultrasound Probe | Industrial Handheld Scanner |
Use Scenario: Battery-operated ultrasound probe with analog beamforming ASIC and low-noise amplifiers. IC Role / Device Role / Timing Role: Low-noise 3.3 V supply for ADC reference and analog signal chain - placed adjacent to sensitive analog sections. Use Value: 70 dB PSRR at 1 kHz rejects noise from nearby digital processors; ±2% accuracy maintains calibration integrity across −40°C to +85°C operating range. | Use Scenario: Rugged handheld barcode scanner using 3.3 V logic and laser driver, operating in warehouses with wide ambient temperature swings. IC Role / Device Role / Timing Role: Main power regulator for FPGA, interface ICs, and laser diode driver - required to maintain regulation during cold-start at −20°C. Use Value: Stable 155 mV dropout at 300 mA ensures uninterrupted operation down to 3.455 V input, compatible with aging Li-ion cells at low SOC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6210B332MR-G | 300 mA, 3.3 V, 25 µA IQ, but no active discharge; 200 mV dropout at 300 mA; requires 2.2 µF min. COUT. | Lacks output discharge - unsuitable where fast power-down sequencing is required. | Select when cost sensitivity outweighs need for active discharge and board space allows larger output capacitor. |
| Micrel MIC5205-3.3YM5-TR | 150 mA, 3.3 V, 100 µA IQ, no discharge; 350 mV dropout at 150 mA; stable with 1 µF. | Lower current rating and higher IQ - limits use to ultra-low-power sub-100 mA loads. | Select only for legacy designs where 150 mA max load and absence of discharge are acceptable. |
Compared with XC6210B332MR-G and MIC5205-3.3YM5-TR, the NCP717CMX330TBG uniquely combines 300 mA capability, 25 µA IQ, 22 µVRMS noise, and 120 Ω active discharge in a 1.0×1.0 mm package - making it optimal for next-generation compact, battery-critical, and noise-sensitive portable systems.
Availability
NCP717CMX330TBG is available at Aetrix Electronics and suitable for wearable health monitors, Bluetooth sensor nodes, portable medical devices, and industrial handheld scanners requiring stable component supply, long-term lifecycle support, and consistent parametric performance.
Supply support for NCP717CMX330TBG 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 technologies for automotive, industrial, cloud, and intelligent edge applications.
The NCP717 series is part of onsemi's precision analog portfolio, engineered specifically for ultra-low-power, low-noise portable electronics - emphasizing battery life extension, miniaturization, and robustness in thermally constrained environments.
FAQ
What is the maximum input voltage rating for the NCP717CMX330TBG?
The NCP717CMX330TBG has an absolute maximum input voltage rating of 6 V, with recommended operating range from 1.8 V to 5.5 V. Exceeding 6 V may cause permanent damage. For reliable operation at 5.5 V input, ensure junction temperature remains ≤125°C using adequate PCB copper area per Figure 54 in the datasheet.
Does the NCP717CMX330TBG require an external resistor for enable functionality?
No, the NCP717CMX330TBG does not require an external resistor for enable functionality. It features an internal 180 nA pull-down current source on the EN pin, ensuring default-off behavior when left floating. A direct connection to IN or a GPIO suffices for control; no external biasing components are needed.
Can the NCP717CMX330TBG operate stably with a 100 nF output capacitor?
Yes, the NCP717CMX330TBG is specified to remain stable with a minimum effective output capacitance of 100 nF, though 1 µF is recommended for full safety margin across voltage, temperature, and DC bias variations. Stability is independent of ESR, but maximum ESR must be <700 mΩ per datasheet Section "Output Capacitor Selection".
What is the purpose of the exposed pad (EPAD) on the NCP717CMX330TBG package?
The EPAD on the NCP717CMX330TBG serves dual purposes: it provides the primary thermal conduction path from die to PCB (reducing θJA significantly), and it functions as an electrical ground connection. It must be soldered directly to the PCB's GND plane - not left floating - to ensure both thermal reliability and proper device operation.
How does the active output discharge function work in the NCP717CMX330TBG?
When the EN pin voltage drops below 0.4 V, the NCP717CMX330TBG disables regulation and turns on an internal 120 Ω discharge FET between OUT and GND. This actively pulls the output voltage to ground within milliseconds (e.g., <1 ms for 1 µF), preventing residual charge from interfering with power sequencing or causing back-powering of upstream circuitry.
NCP717CMX330TBG 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):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.235V @ 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)
NCP717CMX330TBG FAQ
1.How can I place an order for NCP717CMX330TBG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP717CMX330TBG 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 NCP717CMX330TBG reliable?
The price and inventory of NCP717CMX330TBG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP717CMX330TBG is usually 5 days.
3.What payment methods are accepted for NCP717CMX330TBG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP717CMX330TBG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP717CMX330TBG?
NCP717CMX330TBG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP717CMX330TBG 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 NCP717CMX330TBG?
For technical support, including NCP717CMX330TBG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP717CMX330TBG requirements.
6.How does Aetrix verify that NCP717CMX330TBG is sourced from the original manufacturer or authorized distributors?
All NCP717CMX330TBG 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 NCP717CMX330TBG meets industry standards.
7.What is the process for return or replacement of NCP717CMX330TBG?
All NCP717CMX330TBG units undergo pre-shipment inspection (PSI). If there is an issue with NCP717CMX330TBG, 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 NCP717CMX330TBG part is unused and in its original packaging.
Return procedure for NCP717CMX330TBG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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