My Inquiry
My Account
onsemi NCP717AMX185TCG
- Part No.:
- NCP717AMX185TCG
- Manufacturer:
- onsemi
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
NCP717AMX185TCG.pdf
- Description:
- IC REG LINEAR 1.85V 300MA 4XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:54,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
NCP717AMX185TCG from onsemi is a 300 mA, fixed 1.85 V output low-dropout (LDO) regulator with 25 µA typical quiescent current, 22 µVRMS output noise (100 Hz–100 kHz), and 175 mV typical dropout at 300 mA. It features active output discharge (1.2 kΩ), thermal shutdown, current limiting, and stable operation with only 1 µF ceramic output capacitance - designed for space-constrained, battery-powered portable electronics.
For engineers reviewing the NCP717AMX185TCG datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low IQ for standby power optimization, low-noise regulation for RF/analog subsystems, EN-controlled sequencing with active discharge, and XDFN4 1.0×1.0 mm package compatibility in high-density PCB layouts.
Technical Context
The NCP717AMX185TCG 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 scales ground current from 25 µA (no load) to 250 µA (300 mA load), optimizing efficiency across operating conditions.
It integrates an enable-controlled active discharge path (1.2 kΩ pull-down to GND when EN < 0.4 V), ±2% output accuracy over line/load/temperature, and 70 dB PSRR at 1 kHz - all while maintaining stability with minimal 1 µF ceramic output capacitance and no ESR requirement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.85 V ±2% - ensures precise biasing for 1.8 V logic rails and analog cores without external feedback components. |
| Max Output Current | 300 mA continuous - supports moderate-power microcontrollers, sensors, and RF transceivers in portable devices. |
| Quiescent Current | 25 µA typ. at no load - extends battery life in always-on or low-duty-cycle applications like wearables and IoT endpoints. |
| Dropout Voltage | 175 mV typ. at 300 mA - enables regulation from 2.025 V input, critical for single-cell Li-ion (2.7–4.2 V) and Li-poly systems. |
| Output Noise | 22 µVRMS (100 Hz–100 kHz) - meets stringent noise requirements for ADC references, PLL supplies, and RF front-ends. |
| PSRR | 70 dB at 1 kHz - suppresses switching noise from DC-DC converters feeding the LDO input, improving signal integrity. |
| Enable Threshold | VEN_HI = 0.9 V, VEN_LO = 0.4 V - compatible with standard GPIOs and provides 56 mV hysteresis to reject EN pin noise. |
| Active Discharge | 1.2 kΩ pull-down (Version A) - rapidly discharges output capacitance during shutdown, preventing floating voltages and ensuring clean power sequencing. |
Pinout & Package
XDFN4 1.0×1.0 mm, 0.65 mm pitch, exposed pad (EPAD) thermally connected to GND - optimized for thermal performance and PCB area minimization in ultra-thin mobile designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Regulated output voltage node | Delivers stable 1.85 V; requires ≥1 µF ceramic capacitor to GND for stability; connects directly to load. |
| 2 - GND | Power ground reference | Primary return path for load and internal circuits; EPAD must be soldered to large GND copper plane for thermal management. |
| 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 voltage supply | 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 sensors and BLE peripherals. |
| Low-noise regulation | 22 µVRMS output noise - eliminates need for additional filtering in sensitive analog/RF power domains. |
| Active output discharge | Integrated 1.2 kΩ discharge path - ensures rapid, controlled VOUT ramp-down during disable, preventing latch-up in downstream logic. |
| Stable with minimal capacitance | Guaranteed stability with 1 µF ceramic COUT - reduces BOM count and PCB footprint vs. legacy LDOs requiring 10–22 µF tantalum. |
| Robust protection suite | Thermal shutdown (160°C), current limit (379 mA typ.), and short-circuit immunity - enables reliable operation in uncontrolled environments. |
| Wide input voltage range | 1.8 V to 5.5 V operation - supports direct connection to single-cell Li-ion, USB VBUS, or intermediate DC-DC outputs. |
Applications
| Mobile RF Front-End Power | Wearable Sensor Hub Supply |
|---|---|
Use Scenario: Powering 2.4 GHz Bluetooth® transceiver ICs and low-noise amplifiers in smartphones and earbuds. IC Role / Device Role / Timing Role: Ultra-low-noise 1.85 V bias supply decoupling switching noise from main PMIC. Use Value: 22 µVRMS noise and 70 dB PSRR at 1 kHz prevent RX sensitivity degradation and TX spectral mask violations. | Use Scenario: Regulating power for MEMS accelerometers, optical heart-rate monitors, and BLE SoCs in fitness trackers. IC Role / Device Role / Timing Role: Primary 1.85 V system rail with dynamic IQ scaling to extend coin-cell battery life beyond 6 months. Use Value: 25 µA no-load IQ and EN-controlled active discharge eliminate leakage paths during deep-sleep modes. |
| Portable Medical Diagnostic Device | Industrial Handheld Scanner |
Use Scenario: Supplying precision ADCs and op-amps in portable ECG or pulse oximetry units. IC Role / Device Role / Timing Role: Low-drift, low-noise analog domain regulator with ±2% accuracy over −40°C to +85°C. Use Value: 175 mV dropout at full load allows operation down to 2.025 V input, maximizing usable capacity of 2.4–3.6 V primary batteries. | Use Scenario: Powering barcode image sensors and ARM Cortex-M microcontrollers in ruggedized inventory scanners. IC Role / Device Role / Timing Role: Compact, thermally efficient 1.85 V core rail with integrated thermal shutdown for intermittent high-current bursts. Use Value: XDFN4 1.0×1.0 mm package and EPAD thermal design sustain 300 mA loads without derating in confined enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A05185PDBVR | 200 mA max output, 1.85 V fixed, 25 µA IQ, but no active discharge; SOT-23-5 package (larger footprint) | Lacks active discharge - unsuitable where fast VOUT ramp-down is required for sequencing or safety. | Select when board space permits larger SOT-23 and discharge function is not needed. |
| MCP1700T-185I/TT | 250 mA max output, 1.85 V fixed, 1.6 µA IQ (lower), but 300 mV dropout at 250 mA and no thermal shutdown | Higher dropout and missing thermal protection limit use in thermally constrained or high-ambient environments. | Select only for ultra-low-IQ applications with ample input headroom and passive cooling. |
Compared with TPS7A05185PDBVR and MCP1700T-185I/TT, the NCP717AMX185TCG uniquely combines 300 mA drive capability, active discharge, thermal shutdown, and XDFN4 footprint - making it optimal for compact, safety-critical, and noise-sensitive portable systems where full-feature integration matters.
Availability
NCP717AMX185TCG is available at Aetrix Electronics and suitable for mobile RF front-end power, wearable sensor hub supply, portable medical diagnostic devices, and industrial handheld scanners requiring stable component supply with guaranteed long-term manufacturability.
Supply support for NCP717AMX185TCG 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 part of onsemi's precision analog portfolio, engineered specifically for ultra-low-noise, ultra-low-IQ regulation in space-constrained, battery-operated portable electronics - emphasizing reliability, small form factor, and seamless integration into modern PMIC architectures.
FAQ
What is the output voltage tolerance of the NCP717AMX185TCG over temperature and load?
The NCP717AMX185TCG maintains ±2% output voltage accuracy across −40°C to +125°C junction temperature, 0–300 mA load, and input voltage range (VIN = VOUT(NOM) + 0.5 V or 2.3 V, whichever is greater). This is confirmed in the Electrical Characteristics table under "Output Voltage Accuracy" with test conditions explicitly covering full operational ranges.
Does the NCP717AMX185TCG support active output discharge, and what is its resistance value?
Yes, the NCP717AMX185TCG (suffix "A") includes active output discharge with a nominal 1.2 kΩ pull-down resistance to GND when EN < 0.4 V. This is specified in the Pin Function Description section and confirmed in the Electrical Characteristics table under "Active Output Discharge Resistance" for Version A devices.
What is the minimum output capacitance required for stability with the NCP717AMX185TCG?
The NCP717AMX185TCG is stable with a minimum 1.0 µF ceramic output capacitor (X5R/X7R), and the datasheet confirms stability down to 100 nF effective capacitance. No ESR requirement exists, but maximum ESR must remain below 700 mΩ - verified in Figure 43 ("Stability vs. Output Capacitor ESR") and Applications Information section.
Can the NCP717AMX185TCG operate from a 1.8 V input supply?
No - the absolute minimum input voltage is 1.8 V, but the recommended operating input voltage starts at 1.8 V only when VOUT ≥ 1.5 V and VIN ≥ VOUT(NOM) + 0.5 V. For the NCP717AMX185TCG (1.85 V output), minimum valid VIN is 2.35 V per Electrical Characteristics test conditions and Figure 12 ("Output Voltage vs. Input Voltage").
What protection features are integrated into the NCP717AMX185TCG?
The NCP717AMX185TCG integrates thermal shutdown (160°C trip, 140°C hysteresis), output current limiting (379 mA typ.), short-circuit protection (390 mA typ. at VOUT = 0 V), and reverse-current blocking via its PMOS pass transistor - all documented in the Features list, Absolute Maximum Ratings, and Applications Information sections of the datasheet.
NCP717AMX185TCG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 4-XDFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.85V
- 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)
NCP717AMX185TCG FAQ
1.How can I place an order for NCP717AMX185TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP717AMX185TCG 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 NCP717AMX185TCG reliable?
The price and inventory of NCP717AMX185TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP717AMX185TCG is usually 5 days.
3.What payment methods are accepted for NCP717AMX185TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP717AMX185TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP717AMX185TCG?
NCP717AMX185TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP717AMX185TCG 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 NCP717AMX185TCG?
For technical support, including NCP717AMX185TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP717AMX185TCG requirements.
6.How does Aetrix verify that NCP717AMX185TCG is sourced from the original manufacturer or authorized distributors?
All NCP717AMX185TCG 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 NCP717AMX185TCG meets industry standards.
7.What is the process for return or replacement of NCP717AMX185TCG?
All NCP717AMX185TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCP717AMX185TCG, 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 NCP717AMX185TCG part is unused and in its original packaging.
Return procedure for NCP717AMX185TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NCP717AMX185TCG Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
