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onsemi NCP717CMX180TCG
- Part No.:
- NCP717CMX180TCG
- Manufacturer:
- onsemi
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
NCP717CMX180TCG.pdf
- Description:
- IC REG LINEAR 1.8V 300MA 4XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,822
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Product details
Overview
NCP717CMX180TCG from onsemi is a 300 mA, fixed 1.8 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), 175 mV typical dropout at 300 mA, ±2% output accuracy over load/line/temperature, and active output discharge with 120 Ω pull-down resistance - optimized for battery-powered portable electronics requiring ultra-low IQ and low-noise power.
For engineers reviewing the NCP717CMX180TCG datasheet, pinout, applications, or equivalent options, key selection criteria include its 1.8 V fixed output, XDFN-4 thermal performance (RJA = 250 °C/W), EN-controlled shutdown (<1 µA IDIS), stability with 1 µF ceramic output capacitor, and compatibility with space-constrained, noise-sensitive systems such as GPS modules and Bluetooth transceivers.
Technical Context
The NCP717CMX180TCG employs a PMOS pass transistor architecture enabling reverse-current blocking and low dropout across its 1.8 V to 5.5 V input range. Its adaptive quiescent current circuitry dynamically reduces ground current under light/no-load conditions while maintaining regulation accuracy.
It integrates thermal shutdown (160 °C trip, 20 °C hysteresis), current limiting (~379 mA typ.), and an enable-controlled active output discharge function (120 Ω path to GND when EN < 0.4 V). The device achieves 70 dB PSRR at 1 kHz and supports monotonic startup via internal soft-start.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±2% over −40°C to +125°C, load 0–300 mA, line 2.3 V–5.5 V - ensures stable core voltage for 1.8 V logic rails. |
| Quiescent Current | 25 µA typical at no load - extends battery life in always-on sensor nodes and standby modes. |
| Dropout Voltage | 175 mV typical at 300 mA - enables operation from single-cell Li-ion (3.0 V min) down to ~1.975 V input. |
| Output Noise | 22 µVRMS (100 Hz–100 kHz) - suitable for RF ICs, ADCs, and precision analog circuits without external filtering. |
| PSRR | 70 dB at 1 kHz - suppresses switching noise from upstream DC-DC converters feeding the LDO input. |
| Active Discharge | 120 Ω pull-down to GND when disabled - prevents floating outputs and ensures fast, controlled VOUT decay in multi-rail sequencing. |
| Stability | Guaranteed with ≥1 µF ceramic COUT (X5R/X7R), ESR < 700 mΩ - eliminates need for tantalum or electrolytic capacitors. |
Pinout & Package
Package: XDFN-4 (Case 711AJ), 1.0 mm × 1.0 mm × 0.4 mm, 0.65 mm pitch, exposed thermal pad (EPAD) connected to GND for enhanced heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Regulated output | Delivers stable 1.8 V; requires ≥1 µF ceramic capacitor to GND for stability and transient response. |
| 2 - GND | Power ground | Reference node for regulation and thermal path; EPAD must be soldered directly to PCB ground plane. |
| 3 - EN | Enable control input | Logic-high (>0.9 V) enables regulator; logic-low (<0.4 V) disables it and activates 120 Ω discharge path. |
| 4 - IN | Input supply | Accepts 1.8–5.5 V; requires ≥1 µF ceramic capacitor close to pin to suppress input ripple and transients. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 25 µA typical at zero load - enables >1-year battery life in coin-cell–powered IoT sensors. |
| Low-noise regulation | 22 µVRMS output noise - avoids signal corruption in RF front-ends and high-resolution data converters. |
| Active output discharge | 120 Ω internal discharge path - eliminates external components for controlled power-down in multi-voltage systems. |
| High PSRR at 1 kHz | 70 dB rejection of low-frequency supply noise - maintains clean 1.8 V rail despite noisy DC-DC sources. |
| Thermal & current protection | Integrated 160 °C thermal shutdown and 379 mA current limit - ensures robust operation under fault conditions without external circuitry. |
Applications
| Smartphone Application Processor Core Rail | Bluetooth Low Energy (BLE) SoC Power |
|---|---|
Use Scenario: Powers 1.8 V I/O and memory interface of application processors in smartphones during active and deep-sleep states. IC Role / Device Role / Timing Role: Primary low-noise, low-IQ LDO delivering regulated 1.8 V from shared system PMIC output. Use Value: 25 µA IQ minimizes standby current draw; 22 µVRMS noise prevents bit errors in high-speed serial interfaces (e.g., MIPI D-PHY). | Use Scenario: Supplies clean 1.8 V to BLE transceiver ICs (e.g., Nordic nRF52 series) in wearables and beacons. IC Role / Device Role / Timing Role: Dedicated LDO for RF/analog section, isolated from noisy digital supplies. Use Value: 70 dB PSRR at 1 kHz rejects switching noise from buck converters; active discharge ensures fast wake-up timing compliance. |
| Portable Medical Pulse Oximeter Sensor | GPS/GLONASS Receiver Front-End |
Use Scenario: Powers analog front-end (AFE) and photodiode amplifier in battery-operated pulse oximeters. IC Role / Device Role / Timing Role: Precision analog LDO providing ultra-low-noise bias for sensitive current-to-voltage conversion. Use Value: 22 µVRMS noise floor preserves SNR in sub-µA photocurrent measurements; ±2% accuracy ensures consistent LED drive calibration. | Use Scenario: Supplies 1.8 V LNA and baseband IC in compact GPS modules used in asset trackers and navigation devices. IC Role / Device Role / Timing Role: Low-phase-noise power source for RF signal chain, decoupled from digital MCU supply. Use Value: 175 mV dropout allows operation from aging Li-ion cells; XDFN-4 footprint saves board space in miniaturized GNSS antennas. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6210B182MR-G | 1.8 V fixed, 300 mA, 25 µA IQ, but no active discharge; SOT-25 package (2.9×2.8 mm) | Lacks output discharge - requires external MOSFET for controlled shutdown in sequenced systems. | Select when board space permits larger SOT-25 and discharge is handled externally. |
| Richtek RT9080A-18PU5 | 1.8 V fixed, 300 mA, 28 µA IQ, 25 µVRMS noise, active discharge (150 Ω), but requires 2.2 µF min COUT. | Higher minimum output capacitance increases BOM cost and footprint vs. NCP717CMX180TCG's 1 µF requirement. | Select when tighter noise spec (25 → 22 µVRMS) and same discharge function are critical, accepting larger COUT. |
Compared with XC6210B182MR-G and RT9080A-18PU5, the NCP717CMX180TCG uniquely combines 1 µF stability, 120 Ω active discharge, and industry-leading 22 µVRMS noise in the smallest XDFN-4 footprint - making it optimal for ultra-compact, battery-sensitive designs where both size and analog integrity are constrained.
Availability
NCP717CMX180TCG is available at Aetrix Electronics and suitable for smartphone power management, BLE wearable subsystems, portable medical sensor modules, and GPS receiver designs requiring stable component supply with guaranteed long-term manufacturability.
Supply support for NCP717CMX180TCG 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 intelligent edge applications.
The NCP717 series belongs to onsemi's precision low-noise LDO portfolio, engineered specifically for space-constrained, battery-powered portable devices demanding ultra-low quiescent current, high PSRR, and fast transient response without sacrificing accuracy or reliability.
FAQ
What is the maximum input voltage rating for the NCP717CMX180TCG?
The NCP717CMX180TCG has an absolute maximum input voltage of 6 V. Operation above this level risks permanent damage. For reliable continuous operation, the recommended input voltage range is 1.8 V to 5.5 V - ensuring proper regulation at 1.8 V output while maintaining margin for dropout and ripple.
Does the NCP717CMX180TCG require an external pull-up resistor on the EN pin?
No, the NCP717CMX180TCG does not require an external pull-up resistor on the EN pin. It features an internal pull-down current source (180 nA typical) that guarantees disable state when EN is left floating. If enable functionality is unused, EN may be tied directly to IN for always-on operation.
What is the purpose of the exposed pad (EPAD) on the NCP717CMX180TCG package?
The exposed pad (EPAD) on the NCP717CMX180TCG is electrically connected to GND and serves as the primary thermal conduction path. It must be soldered to a large PCB ground copper plane to achieve the specified RJA of 250 °C/W and prevent thermal shutdown during 300 mA continuous operation.
How does the active output discharge function work in the NCP717CMX180TCG?
When the EN pin voltage falls below 0.4 V, the NCP717CMX180TCG disables the pass transistor and activates an internal 120 Ω NMOS discharge path from OUT to GND. This pulls the output voltage to near-zero within microseconds, preventing unintended back-powering or latch-up in multi-rail systems - eliminating need for external discharge circuitry.
Can the NCP717CMX180TCG be used with a 100 nF output capacitor?
Yes - the NCP717CMX180TCG is stable with a minimum effective output capacitance of 100 nF. However, the datasheet specifies 1 µF as the recommended value to ensure adequate phase margin, transient response, and safety margin against capacitance loss due to DC bias and temperature drift. Using 100 nF is possible only under tightly controlled conditions and is not advised for production designs.
NCP717CMX180TCG 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):
- 1.8V
- 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)
NCP717CMX180TCG FAQ
1.How can I place an order for NCP717CMX180TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP717CMX180TCG 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 NCP717CMX180TCG reliable?
The price and inventory of NCP717CMX180TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP717CMX180TCG is usually 5 days.
3.What payment methods are accepted for NCP717CMX180TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP717CMX180TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP717CMX180TCG?
NCP717CMX180TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP717CMX180TCG 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 NCP717CMX180TCG?
For technical support, including NCP717CMX180TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP717CMX180TCG requirements.
6.How does Aetrix verify that NCP717CMX180TCG is sourced from the original manufacturer or authorized distributors?
All NCP717CMX180TCG 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 NCP717CMX180TCG meets industry standards.
7.What is the process for return or replacement of NCP717CMX180TCG?
All NCP717CMX180TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCP717CMX180TCG, 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 NCP717CMX180TCG part is unused and in its original packaging.
Return procedure for NCP717CMX180TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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