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onsemi NCP717AMX300TCG
- Part No.:
- NCP717AMX300TCG
- Manufacturer:
- onsemi
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
NCP717AMX300TCG.pdf
- Description:
- IC REG LINEAR 3V 300MA 4XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,899
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Product details
Overview
NCP717AMX300TCG from onsemi is a 300 mA, fixed 3.0 V output low-dropout (LDO) regulator optimized for battery-powered portable electronics. It delivers ±2% output accuracy over load/line/temperature, features 25 µA typical quiescent current at no-load, 22 µVRMS output noise (100 Hz–100 kHz), and 175 mV typical dropout at 300 mA - enabling stable, ultra-low-noise power in space-constrained medical sensors and wireless handsets.
For engineers reviewing the NCP717AMX300TCG datasheet, pinout, applications, or equivalent options, this page provides verified technical context, package-validated pin functions, real-world application cards, and two confirmed alternative LDOs with documented functional and application differences.
Technical Context
The NCP717AMX300TCG uses a PMOS pass transistor with adaptive ground current control to maintain 25 µA IQ across input voltage (1.8–5.5 V) and temperature (−40°C to +125°C). Its internal bandgap reference and error amplifier deliver tight regulation, while the EN pin enables logic-controlled shutdown with active output discharge via a 1.2 kΩ internal resistor.
Stability is guaranteed with ≥1 µF ceramic output capacitance and no ESR requirement; PSRR reaches 70 dB at 1 kHz due to high open-loop gain and optimized feedback path. Thermal shutdown (160°C trip, 20°C hysteresis) and current limiting (379 mA typ.) provide robust protection without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0 V ±2% over full load/line/temperature range - eliminates external resistor network and ensures precision rail for RF front-ends or ADC references. |
| Quiescent Current | 25 µA typical at no-load - extends battery life in always-on IoT sensors and wearable standby modes. |
| Dropout Voltage | 175 mV typical at 300 mA - supports operation down to VIN = 3.175 V, critical for single-cell Li-ion (3.0–4.2 V) systems. |
| Output Noise | 22 µVRMS (100 Hz–100 kHz) - meets stringent noise requirements for audio codecs and low-noise amplifiers. |
| 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 and 3.3 V GPIOs without level-shifting. |
| Active Discharge | 1.2 kΩ internal pull-down when disabled - ensures rapid VOUT decay (<1 ms) for sequencing-critical subsystems. |
Pinout & Package
XDFN4 1.0 × 1.0 mm, 0.65 mm pitch, exposed thermal pad (EPAD) - ultra-compact footprint ideal for wearables and hearing aids; EPAD must be soldered to GND plane for thermal performance (RJA = 250°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT | Regulated output | Connect ≥1 µF ceramic capacitor to GND; trace resistance must be minimized to preserve ±2% load regulation. |
| 2: GND | Power ground | Reference node for all internal circuitry; tie EPAD directly to this pin for optimal thermal dissipation. |
| 3: EN | Enable control | Logic-high (>0.9 V) enables regulation; logic-low (<0.4 V) disables output and activates 1.2 kΩ discharge path. |
| 4: IN | Input supply | Accepts 1.8–5.5 V; requires ≥1 µF ceramic capacitor close to pin to suppress high-frequency ripple. |
| EPAD | Thermal pad | Must be soldered to large GND copper area - not electrically isolated; primary heat removal path. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ with dynamic adjustment | Maintains 25 µA no-load current across temperature and input voltage - cuts leakage in sleep-mode medical monitors. |
| Low-noise architecture | 22 µVRMS noise floor enables direct powering of RF transceivers without additional filtering. |
| Stable with minimal capacitance | Guaranteed stability with 1 µF ceramic COUT - reduces BOM count and PCB area vs. legacy LDOs requiring 10+ µF. |
| Integrated active discharge | 1.2 kΩ internal pull-down discharges VOUT in <1 ms upon disable - satisfies strict power sequencing in multi-rail SoC designs. |
| Fully protected operation | Thermal shutdown (160°C), current limit (379 mA), and short-circuit immunity eliminate need for external protection circuits. |
Applications
| Wireless Handset Power Rail | Portable Medical Sensor |
|---|---|
Use Scenario: Powers Bluetooth® baseband IC and RF transceiver in compact handheld health monitor. IC Role / Device Role / Timing Role: Primary 3.0 V LDO delivering clean, sequenced power with fast turn-on and active discharge. Use Value: 22 µVRMS noise prevents RF desense; 175 mV dropout enables full runtime from declining Li-ion cell. |
Use Scenario: Supplies analog front-end and low-power MCU in disposable glucose sensor patch. IC Role / Device Role / Timing Role: Always-on 3.0 V regulator with ultra-low 25 µA quiescent current during sensor sleep cycles. Use Value: Extends coin-cell battery life beyond 6 months; ±2% accuracy ensures consistent ADC reference voltage. |
| Smartphone Camera Module | Industrial IoT Edge Node |
Use Scenario: Provides noise-sensitive 3.0 V bias to CMOS image sensor and ISP in multi-camera array. IC Role / Device Role / Timing Role: Low-noise post-regulator downstream of buck converter, with EN-controlled power gating. Use Value: 70 dB PSRR at 1 kHz rejects switching noise from main PMIC; 1.0 × 1.0 mm XDFN fits tight camera module layout. |
Use Scenario: Powers Zigbee® SoC and environmental sensors in battery-operated smart building node. IC Role / Device Role / Timing Role: Main system LDO with enable-controlled wake/sleep transitions and thermal fault resilience. Use Value: Active discharge ensures reliable reset timing; thermal shutdown prevents field failure in enclosed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A0530PDBVR | 300 mA, 3.0 V fixed, 25 µA IQ, but no active discharge; PSRR = 50 dB @ 1 kHz; dropout = 130 mV @ 300 mA. | Lacks integrated discharge path - requires external MOSFET circuit for sequencing; better dropout but lower noise rejection. | Select when lowest possible dropout is critical and discharge is handled externally; verify sequencing timing with added components. |
| MCP1700T-3002E/MB | 250 mA, 3.0 V fixed, 1.6 µA IQ, no active discharge, 170 mV dropout @ 250 mA; PSRR = 60 dB @ 1 kHz. | Lower IQ suits ultra-long-life applications, but reduced current capability and missing discharge limit use in multi-rail systems. | Prefer for energy-harvesting or button-cell devices where 250 mA max load suffices and discharge is unnecessary. |
Compared with TPS7A0530PDBVR and MCP1700T-3002E/MB, the NCP717AMX300TCG uniquely combines 300 mA drive, 22 µVRMS noise, and integrated 1.2 kΩ active discharge - making it the only option that satisfies simultaneous low-noise, high-current, and strict power sequencing requirements in compact portable designs.
Availability
NCP717AMX300TCG is available at Aetrix Electronics and suitable for wireless handsets, portable medical sensors, and industrial IoT edge nodes requiring stable component supply, long-term manufacturability, and Pb-free compliance.
Supply support for NCP717AMX300TCG 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, with leadership in power management, analog, and sensing technologies.
The NCP717 series is designed for ultra-low-noise, ultra-low-IQ power delivery in space-constrained portable and medical devices - emphasizing battery longevity, signal integrity, and seamless integration into miniaturized PCB layouts.
FAQ
What is the maximum input voltage rating for the NCP717AMX300TCG?
The NCP717AMX300TCG has an absolute maximum input voltage of 6 V. Operation is specified across 1.8 V to 5.5 V, with recommended continuous operation limited to ≤5.5 V to ensure reliability and thermal safety under full load conditions. Exceeding 6 V risks permanent damage per the Absolute Maximum Ratings table.
Does the NCP717AMX300TCG require an external capacitor on the EN pin?
No, the NCP717AMX300TCG does not require an external capacitor on the EN pin. Its enable block includes built-in deglitching and 56 mV hysteresis, eliminating susceptibility to noise-induced toggling. The EN pin draws only 180 nA typical input current, allowing direct connection to microcontroller GPIOs without loading concerns.
Can the NCP717AMX300TCG be used without an output capacitor?
No - the NCP717AMX300TCG requires a minimum 1 µF ceramic output capacitor for stability, as confirmed in the Applications Information section. While the device remains stable down to 100 nF under specific conditions, using less than 1 µF risks oscillation and violates the validated design margin for production use across temperature and process variation.
What is the purpose of the exposed pad (EPAD) on the NCP717AMX300TCG package?
The EPAD on the NCP717AMX300TCG is a thermal pad that must be soldered directly to the PCB's GND plane. It serves as the primary heat conduction path - reducing thermal resistance from junction-to-air (RJA) to 250°C/W - and is electrically connected to GND internally. Leaving it unconnected degrades thermal performance and risks thermal shutdown under sustained 300 mA load.
How does the active output discharge function operate in the NCP717AMX300TCG?
In the NCP717AMX300TCG, when the EN pin voltage falls below 0.4 V, the internal 1.2 kΩ discharge transistor connects OUT to GND. This pulls the output voltage to near-zero within <1 ms, ensuring controlled power-down sequencing in multi-rail systems. The feature is exclusive to "A" and "C" suffix variants - confirmed by the Ordering Information table for NCP717AMX300TCG.
NCP717AMX300TCG 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):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.25V @ 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)
NCP717AMX300TCG FAQ
1.How can I place an order for NCP717AMX300TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP717AMX300TCG 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 NCP717AMX300TCG reliable?
The price and inventory of NCP717AMX300TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP717AMX300TCG is usually 5 days.
3.What payment methods are accepted for NCP717AMX300TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP717AMX300TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP717AMX300TCG?
NCP717AMX300TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP717AMX300TCG 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 NCP717AMX300TCG?
For technical support, including NCP717AMX300TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP717AMX300TCG requirements.
6.How does Aetrix verify that NCP717AMX300TCG is sourced from the original manufacturer or authorized distributors?
All NCP717AMX300TCG 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 NCP717AMX300TCG meets industry standards.
7.What is the process for return or replacement of NCP717AMX300TCG?
All NCP717AMX300TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCP717AMX300TCG, 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 NCP717AMX300TCG part is unused and in its original packaging.
Return procedure for NCP717AMX300TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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