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NXP Semiconductors NX1117CE20Z,115
- Part No.:
- NX1117CE20Z,115
- Manufacturer:
- NXP Semiconductors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
NX1117CE20Z,115.pdf
- Description:
- IC REG LINEAR 2V 1A SOT223
- Quantity:
- Payment:
- Shipping:
Inventory:1,311
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Product details
Overview
NX1117CE20Z,115 from NXP Semiconductors is a fixed-output 2.0 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 for post-regulation in DC-DC converters and USB power rails.
For engineers reviewing the NX1117CE20Z,115 datasheet, NX1117CE20Z,115 pinout, NX1117CE20Z,115 application, or NX1117CE20Z,115 equivalent, key selection criteria include dropout voltage at 800 mA (≤1.2 V), input voltage range (up to 20 V), quiescent current (5–6 mA), thermal resistance (72 K/W on FR4), and guaranteed operation from −40 °C to +125 °C.
Technical Context
The NX1117CE20Z,115 implements internal bandgap reference (1.250 V typ), SOA-controlled current limiting to prevent thermal runaway under high VIN−VOUT conditions, and a single-stage pass transistor architecture optimized for stability with 680 nF ceramic input/output capacitors.
It operates without minimum load requirements, supports line regulation ≤4.5 mV over 3.4–12 V input, and delivers load regulation ≤6 mV across 0–800 mA - enabling direct integration into battery-powered and industrial point-of-load systems where transient response and thermal robustness are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.000 V (±1.25 % over −40 °C to +125 °C) |
| Max Output Current | 1 A continuous, with SOA-limited foldback above ~10 V VIN−VOUT |
| Dropout Voltage | 1.07 V typ / 1.2 V max at 800 mA - enables use with 3.3 V input rails |
| Quiescent Current | 5–6 mA at VIN = 12 V - stable across temperature and load |
| Input Voltage Range | 3.4 V to 20 V - compatible with wide-input DC-DC pre-regulators |
| Thermal Shutdown | Activates at TJ ≈ 135 °C - protects against sustained overload or poor PCB heatsinking |
| PSRR | 67 dB at 120 Hz - suppresses ripple from switching converters feeding its input |
Pinout & Package
SOT223 (SC-73) plastic surface-mount package with integrated heat sink pad; 4-pin configuration, pin 1 connected to GND (fixed-output version), pins 2 and 4 tied to VOUT for enhanced current handling and thermal conduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference and thermal path; electrically connected to exposed pad |
| 2 | VOUT | Main regulated output terminal; paralleled with pin 4 for lower impedance |
| 3 | VIN | Unregulated input supply; requires ≥3.4 V for regulation at 2.0 V output |
| 4 | VOUT | Secondary output connection; shares same node as pin 2 for improved current sharing and thermal dissipation |
Key Features
| Feature | Design Value |
|---|---|
| No minimum load requirement | Enables stable regulation down to 0 mA - ideal for standby and low-power sleep modes |
| SOA control | Automatically reduces output current when VIN−VOUT exceeds safe limits - prevents thermal destruction without external circuitry |
| Thermal shutdown with hysteresis | Shuts down at ~135 °C junction temperature and re-enables after cooldown - eliminates latch-up risk |
| Low PSRR sensitivity to output capacitor ESR | Maintains 67 dB ripple rejection with standard 680 nF ceramic caps - avoids costly low-ESR tantalum or polymer alternatives |
| Wide operating temperature range | Specified from −40 °C to +125 °C ambient - suitable for automotive under-hood and industrial control environments |
Applications
| Post Regulator for DC-DC Converters | USB Power Rail Regulation |
|---|---|
Use Scenario: Clean 2.0 V supply derived from noisy 3.3 V buck converter output in embedded microcontroller subsystems. IC Role / Device Role / Timing Role: Final-stage LDO providing low-noise, ripple-free power to analog peripherals and I/O banks. Use Value: 67 dB PSRR at 120 Hz rejects switching noise; 1.2 V dropout allows operation with minimal headroom from upstream converter. |
Use Scenario: Stable 2.0 V rail for USB PHY interface logic and pull-up resistors in host/device controllers. IC Role / Device Role / Timing Role: Fixed-output voltage regulator ensuring USB specification-compliant signaling levels. Use Value: ±1.25 % output accuracy guarantees VIL/VIH margin compliance; 1 A rating supports multi-port hub designs. |
| Battery Charger Reference Supply | Industrial Point-of-Load Regulation |
Use Scenario: Precision bias supply for charger IC feedback networks and ADC references in Li-ion charging circuits. IC Role / Device Role / Timing Role: Low-drift, low-noise voltage source for sensing and control loops. Use Value: 0.7 % temperature coefficient and 0.3 % long-term stability ensure consistent charge termination accuracy over time and temperature. |
Use Scenario: Local 2.0 V supply for FPGA I/O banks or sensor signal conditioning in programmable logic controllers. IC Role / Device Role / Timing Role: High-reliability, thermally robust LDO for harsh industrial environments. Use Value: −40 °C to +125 °C operation and SOA protection enable deployment without derating in unventilated enclosures. |
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 |
|---|---|---|---|
| TLV1117-20CDCYR | 2.0 V fixed, ±2 % accuracy, 800 mA max, SOT-223, higher dropout (1.3 V @ 800 mA) | Lower accuracy and current limit; less suitable for tight-tolerance 2.0 V rails | Select TLV1117-20CDCYR only if cost sensitivity outweighs accuracy and thermal margin requirements. |
| LD1117S20TR | 2.0 V fixed, ±2 % accuracy, 800 mA max, SOT-223, no SOA control, higher quiescent current (10 mA) | Lacks SOA protection and thermal shutdown hysteresis - requires external thermal monitoring in high-power designs | Choose LD1117S20TR only for non-critical consumer applications where full industrial reliability is not required. |
Compared with TLV1117-20CDCYR and LD1117S20TR, the NX1117CE20Z,115 provides tighter output accuracy (±1.25 %), higher current capability (1 A vs. 800 mA), integrated SOA control, and lower quiescent current - making it preferable for industrial and USB-compliant designs demanding robustness and precision.
Availability
NX1117CE20Z,115 is available at Aetrix Electronics and suitable for USB devices, hard drive controllers, and industrial point-of-load applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for NX1117CE20Z,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 markets.
The NX1117C/NX1117CE series was designed for high-reliability post-regulation in space-constrained, thermally demanding applications - emphasizing SOA protection, wide input range, and extended temperature operation.
FAQ
What is the maximum input voltage for the NX1117CE20Z,115?
The NX1117CE20Z,115 supports an absolute maximum input voltage of 20 V per its limiting values table. For reliable operation, the recommended input range is 3.4 V to 12 V when delivering 2.0 V output at full 1 A load - exceeding this may trigger SOA current limiting or thermal shutdown depending on ambient conditions and PCB layout.
Does the NX1117CE20Z,115 require an external capacitor for stability?
Yes, the NX1117CE20Z,115 requires both input and output capacitors for stability: 680 nF ceramic (with ≤1 Ω ESR) on both VIN and VOUT is specified in the datasheet. Omitting or undersizing these capacitors risks oscillation, poor transient response, or failure to regulate under load changes.
How does the SOA control function in the NX1117CE20Z,115?
The SOA control in the NX1117CE20Z,115 dynamically reduces output current when the voltage difference between VIN and VOUT exceeds safe limits - preventing excessive power dissipation and junction overheating. This occurs before thermal shutdown activates and is intrinsic to the IC's internal design, requiring no external components.
Is the NX1117CE20Z,115 pin-compatible with other SOT223 LDOs?
The NX1117CE20Z,115 uses standard SOT223 pinout (GND–VOUT–VIN–VOUT), matching industry conventions. However, pin compatibility alone does not guarantee functional equivalence - differences in SOA behavior, quiescent current, and dropout voltage mean board-level validation is required before substitution.
What is the thermal resistance of the NX1117CE20Z,115 on a standard FR4 PCB?
When mounted on a standard FR4 PCB with single-sided copper and tin-plated finish, the NX1117CE20Z,115 has a typical junction-to-ambient thermal resistance (Rth(j-a)) of 72 K/W. This value assumes the standard footprint per Figure 22 in the datasheet and is critical for calculating maximum allowable power dissipation at a given ambient temperature.
NX1117CE20Z,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):
- 2V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.2V @ 800mA
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 6 mA
- Current - Supply (Max):
- -
- PSRR:
- 67dB (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
NX1117CE20Z,115 FAQ
1.How can I place an order for NX1117CE20Z,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for NX1117CE20Z,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 NX1117CE20Z,115 reliable?
The price and inventory of NX1117CE20Z,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NX1117CE20Z,115 is usually 5 days.
3.What payment methods are accepted for NX1117CE20Z,115?
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4.How is shipping managed for NX1117CE20Z,115?
NX1117CE20Z,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NX1117CE20Z,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 NX1117CE20Z,115?
For technical support, including NX1117CE20Z,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NX1117CE20Z,115 requirements.
6.How does Aetrix verify that NX1117CE20Z,115 is sourced from the original manufacturer or authorized distributors?
All NX1117CE20Z,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 NX1117CE20Z,115 meets industry standards.
7.What is the process for return or replacement of NX1117CE20Z,115?
All NX1117CE20Z,115 units undergo pre-shipment inspection (PSI). If there is an issue with NX1117CE20Z,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 NX1117CE20Z,115 part is unused and in its original packaging.
Return procedure for NX1117CE20Z,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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