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NXP Semiconductors NX1117CE18Z,115
- Part No.:
- NX1117CE18Z,115
- Manufacturer:
- NXP Semiconductors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
NX1117CE18Z,115.pdf
- Description:
- IC REG LINEAR 1.8V 1A SOT223
- Quantity:
- Payment:
- Shipping:
Inventory:4,850
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Product details
Overview
NX1117CE18Z,115 from NXP Semiconductors is a fixed-output 1.8 V, ±1.25 % accuracy, low-dropout linear voltage regulator in SOT223 package, delivering up to 1 A output current with thermal shutdown, SOA control, and output current limiting - used as post-regulator for DC-DC converters in USB devices and hard drive controllers.
For engineers reviewing the NX1117CE18Z,115 datasheet, NX1117CE18Z,115 pinout, NX1117CE18Z,115 application, or NX1117CE18Z,115 equivalent, key selection criteria include dropout voltage at 800 mA (≤1.2 V), quiescent current (5–6 mA), PSRR at 120 Hz (68 dB), line/load regulation (≤4.0 mV), and operation across −40 °C to +125 °C.
Technical Context
The NX1117CE18Z,115 implements internal bandgap reference (1.25 V) and error amplifier feedback to maintain stable 1.8 V output under varying load and input conditions. Its Safe Operating Area (SOA) control dynamically limits output current during high VIN–VOUT differentials to prevent thermal runaway.
It operates without minimum load requirement and supports input voltages up to 20 V. Dropout voltage rises predictably with load: 0.95 V at 100 mA, 1.07 V at 800 mA - enabling efficient regulation from 3.2 V input in 1.8 V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.800 V ±1.25 % (1.755–1.845 V over full temperature range) |
| Max Output Current | 1 A continuous - sufficient for powering core logic or I/O rails in embedded controllers |
| Dropout Voltage | 1.07 V at 800 mA - enables operation from 3.2 V input while maintaining regulation |
| Quiescent Current | 5–6 mA - low static consumption suitable for always-on power domains |
| PSRR @ 120 Hz | 68 dB - effective suppression of switching ripple from upstream DC-DC converters |
| Operating Temp | −40 °C to +125 °C - qualified for industrial and automotive under-hood applications |
| Thermal Shutdown | Activates at ~135 °C - protects against sustained overload or poor PCB heatsinking |
Pinout & Package
SOT223 (SC-73) plastic surface-mount package with integrated heat sink pad; 4-lead configuration optimized for medium-power linear regulation and thermal dissipation on standard FR4 PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference and thermal path - connected to large copper pour for heat transfer |
| 2 | VOUT | Regulated 1.8 V output - requires ≥680 nF ceramic capacitor with ≤1 Ω ESR |
| 3 | VIN | Input supply (up to 20 V) - must be decoupled with ≥680 nF ceramic capacitor |
| 4 | VOUT | Second output connection - paralleled with Pin 2 to reduce trace resistance and improve current sharing |
Key Features
| Feature | Design Value |
|---|---|
| No minimum load required | Enables stable regulation even at 0 mA output - simplifies design for standby or sleep modes |
| SOA-controlled current limit | Prevents thermal failure during high VIN–VOUT conditions - eliminates need for external foldback circuitry |
| Low dropout at full load | 1.07 V dropout at 800 mA allows use with 3.3 V or 5 V intermediate rails in multi-rail systems |
| High PSRR at low frequency | 68 dB rejection at 120 Hz suppresses rectified AC ripple and switching harmonics from buck converters |
| Wide input voltage range | Supports 3.2 V to 20 V input - accommodates unregulated wall adapters, battery packs, and DC bus variations |
Applications
| USB Devices | Hard Drive Controllers |
|---|---|
Use Scenario: Powering USB 2.0 PHY and controller ICs requiring clean, stable 1.8 V I/O supply. IC Role / Device Role / Timing Role: Post-regulator providing low-noise, low-ripple 1.8 V rail downstream of a switching DC-DC converter. Use Value: 68 dB PSRR ensures USB signal integrity by attenuating switching noise that could cause packet errors or enumeration failures. | Use Scenario: Supplying 1.8 V logic for SATA interface controllers and flash memory buffers. IC Role / Device Role / Timing Role: Fixed-output LDO delivering precise 1.8 V at up to 1 A with tight load regulation (≤5 mV). Use Value: ±1.25 % output accuracy and <1 % load regulation maintain timing margin compliance for high-speed serial links. |
| Battery Chargers | Consumer Equipment PoL |
Use Scenario: Generating 1.8 V bias for fuel gauge ICs, charge management logic, and LED drivers in portable chargers. IC Role / Device Role / Timing Role: Low-quiescent (5–6 mA), no-minimum-load LDO operating from single-cell Li-ion (3.0–4.2 V) or USB input. Use Value: Enables >90 % efficiency at light loads and extends battery runtime without requiring dummy loading. | Use Scenario: Point-of-load regulation for FPGA I/O banks or microcontroller peripherals in set-top boxes and smart speakers. IC Role / Device Role / Timing Role: Compact SOT223 LDO placed near load to minimize IR drop and noise coupling. Use Value: Dual VOUT pins (Pins 2 & 4) reduce effective output impedance, improving transient response to dynamic current steps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-dropout linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV1117-18CDR | ±2 % output accuracy; 1.2 V dropout at 800 mA; 6–10 mA IQ; SOA not specified | Limited to commercial temp range (0–125 °C); lower PSRR (65 dB @ 120 Hz) | Acceptable where cost sensitivity outweighs precision and extended temperature needs |
| MCP1703T-1802E/MB | ±2 % accuracy; 0.6 V dropout at 250 mA; 2 µA IQ; max 250 mA output | Ultra-low IQ but insufficient current for 1 A loads; requires external capacitor for stability | Only suitable for low-power sensor nodes - not a functional replacement for 1 A applications |
Compared with TLV1117-18CDR and MCP1703T-1802E/MB, the NX1117CE18Z,115 delivers tighter output accuracy (±1.25 % vs. ±2 %), higher current capability (1 A vs. ≤250 mA), and guaranteed SOA protection - making it uniquely suited for industrial-grade 1.8 V point-of-load regulation where reliability and thermal robustness are critical.
Availability
NX1117CE18Z,115 is available at Aetrix Electronics and suitable for USB devices, hard drive controllers, and battery charger designs requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for NX1117CE18Z,115 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The NX1117C/NX1117CE series was designed specifically for high-reliability post-regulation in power-constrained systems - emphasizing thermal robustness, wide input range, and precision output stability across extended temperature ranges.
FAQ
What is the maximum input voltage rating for the NX1117CE18Z,115?
The NX1117CE18Z,115 supports an absolute maximum input voltage of 20 V per its limiting values table. For reliable continuous operation, the recommended maximum input is 11.8 V when delivering 800 mA - ensuring safe thermal margin and SOA compliance. Exceeding this without adequate heatsinking risks thermal shutdown activation.
Does the NX1117CE18Z,115 require an output capacitor, and what value is recommended?
Yes, the NX1117CE18Z,115 requires a minimum 680 nF ceramic output capacitor with ≤1 Ω ESR, as specified in the characteristics table. A 10 µF tantalum or ceramic capacitor is commonly used in practice to improve transient response and stability. The NX1117CE18Z,115 is not stable with electrolytic capacitors alone due to ESR requirements.
How does the SOA control function in the NX1117CE18Z,115?
The SOA control in the NX1117CE18Z,115 dynamically reduces output current when VIN–VOUT exceeds safe limits - preventing junction overheating during high-differential-voltage conditions. This is implemented via internal circuitry that monitors power dissipation and adjusts current limit in real time, eliminating need for external foldback components. The NX1117CE18Z,115 datasheet confirms SOA control as a core feature.
What is the typical dropout voltage of the NX1117CE18Z,115 at 500 mA load?
The typical dropout voltage of the NX1117CE18Z,115 at 500 mA is 1.01 V, with a maximum of 1.15 V across temperature and process variation. This means the device maintains regulation with VIN as low as 2.81 V (1.8 V + 1.01 V) at nominal conditions - enabling efficient operation from 3.3 V rails with margin for input droop.
Is the NX1117CE18Z,115 pin-compatible with the NX1117C18Z variant?
Yes, the NX1117CE18Z,115 is pin-compatible with the NX1117C18Z variant - both use identical SOT223 package and 4-pin assignment (GND, VOUT, VIN, VOUT). The only difference is output voltage accuracy: ±1.25 % for NX1117CE18Z,115 versus ±1 % for NX1117C18Z. No PCB layout change is needed when substituting between these two variants.
NX1117CE18Z,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 20V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.2V @ 800mA
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 6 mA
- Current - Supply (Max):
- -
- PSRR:
- 68dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-73
NX1117CE18Z,115 FAQ
1.How can I place an order for NX1117CE18Z,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for NX1117CE18Z,115 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 NX1117CE18Z,115 reliable?
The price and inventory of NX1117CE18Z,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NX1117CE18Z,115 is usually 5 days.
3.What payment methods are accepted for NX1117CE18Z,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NX1117CE18Z,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NX1117CE18Z,115?
NX1117CE18Z,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NX1117CE18Z,115 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 NX1117CE18Z,115?
For technical support, including NX1117CE18Z,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NX1117CE18Z,115 requirements.
6.How does Aetrix verify that NX1117CE18Z,115 is sourced from the original manufacturer or authorized distributors?
All NX1117CE18Z,115 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 NX1117CE18Z,115 meets industry standards.
7.What is the process for return or replacement of NX1117CE18Z,115?
All NX1117CE18Z,115 units undergo pre-shipment inspection (PSI). If there is an issue with NX1117CE18Z,115, 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 NX1117CE18Z,115 part is unused and in its original packaging.
Return procedure for NX1117CE18Z,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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