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NXP Semiconductors NX1117C15Z,115
- Part No.:
- NX1117C15Z,115
- Manufacturer:
- NXP Semiconductors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
NX1117C15Z,115.pdf
- Description:
- IC REG LINEAR 1.5V 1A SOT223
- Quantity:
- Payment:
- Shipping:
Inventory:4,335
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Product details
Overview
NX1117C15Z,115 from NXP Semiconductors is a fixed-output 1.5 V low-dropout linear voltage regulator in SOT223 package, delivering up to 1 A output current with ±1 % output voltage accuracy, 1.07 V typical dropout at 800 mA, and thermal shutdown protection. It serves as a post-regulator for DC-DC converters in USB-powered industrial controllers and point-of-load power supplies.
For engineers reviewing the NX1117C15Z,115 datasheet, NX1117C15Z,115 pinout, NX1117C15Z,115 application, or NX1117C15Z,115 equivalent, key selection criteria include dropout voltage at full load, PSRR at 120 Hz, line/load regulation over −40 °C to 125 °C, quiescent current stability, and SOA-controlled current limiting under high Vin–Vout conditions.
Technical Context
The NX1117C15Z,115 implements Safe Operating Area (SOA) control to dynamically limit output current when input-to-output voltage differential exceeds safe thresholds, preventing thermal runaway. Its internal bandgap reference (1.250 V typ.) enables precise 1.5 V output via trimmed resistor network.
It operates across 2.9 V to 11.5 V input range with no minimum load requirement, supports ceramic output capacitors ≥680 nF, and maintains regulation during ambient temperature swings from −40 °C to +125 °C without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | 1.500 V ±1 % (1.470–1.530 V over full temp/load range) |
| Max output current | 1 A continuous; current limited by SOA control above ~5 V Vin–Vout |
| Dropout voltage | 1.07 V typ. at 800 mA (enables operation with only 2.57 V input at full load) |
| PSRR | 69 dB at 120 Hz (reduces ripple from upstream switching converters) |
| Quiescent current | 5–6 mA (stable across 2.9–11.5 V input; no load dependency) |
| Thermal shutdown | Activates at 135 °C junction temperature; auto-recovery on cooldown |
| Operating temp | −40 °C to +125 °C ambient (suitable for industrial and automotive under-hood edge cases) |
Pinout & Package
SOT223 (SC-73) plastic surface-mount package with integrated heat sink pad; 4-pin layout optimized for thermal dissipation on FR4 PCBs using standard footprint (6.7 × 3.7 mm body, 1.8 mm height).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference and primary thermal path to PCB copper pour |
| 2 | VOUT | Main regulated 1.5 V output; electrically and thermally connected to exposed tab |
| 3 | VIN | Unregulated input (2.9–11.5 V); feeds internal pass transistor and bias circuitry |
| 4 | VOUT | Second output connection-tied internally to Pin 2 for enhanced current handling and thermal conduction |
Key Features
| Feature | Design Value |
|---|---|
| No minimum load requirement | Regulation maintained from 0 mA to 1 A output-eliminates need for dummy loads in battery-powered standby modes |
| SOA control | Prevents destructive power dissipation during high Vin–Vout transients (e.g., 12 V input → 1.5 V output at 1 A) |
| Thermal shutdown with hysteresis | Protects against sustained overload or poor heatsinking; restarts automatically after junction cools below ~125 °C |
| Low ESD sensitivity | 2 kV HBM rating ensures robustness during automated assembly and field handling |
| Stable with ceramic capacitors | Works with ≥680 nF X7R/X5R ceramics (no ESR requirements), reducing BOM count and board space |
Applications
| USB Power Delivery Systems | Battery Charger Management |
|---|---|
Use Scenario: Regulating 5 V USB input down to stable 1.5 V for microcontroller I/O banks and sensor interfaces in portable test equipment. IC Role / Device Role / Timing Role: Fixed-output LDO providing clean, low-noise supply independent of USB port voltage variation or cable drop. Use Value: Enables reliable 1.5 V logic operation even with 4.75 V USB input, leveraging 1.07 V dropout to maintain regulation margin. | Use Scenario: Supplying bias voltage to charge controller ICs and status LEDs in Li-ion charger modules for medical wearables. IC Role / Device Role / Timing Role: Post-regulator isolating sensitive analog circuitry from noisy switching charger stages. Use Value: 69 dB PSRR at 120 Hz suppresses switching ripple from buck chargers, preventing false battery-status readings. |
| Hard Drive Controller Boards | Industrial Point-of-Load Supplies |
Use Scenario: Powering 1.5 V DDR termination or interface logic on SATA controller cards operating in wide-temperature enclosures. IC Role / Device Role / Timing Role: Local voltage regulator ensuring stable I/O voltage despite varying system rail loads and ambient extremes. Use Value: ±1 % accuracy and <0.7 % temperature drift guarantee timing margin compliance across −40 °C to +125 °C. | Use Scenario: Delivering 1.5 V to FPGA configuration I/O banks or isolated ADC reference circuits in factory automation PLCs. IC Role / Device Role / Timing Role: Precision low-noise supply enabling accurate analog measurements and deterministic digital signaling. Use Value: 0.003 % RMS output noise and <5 mV load regulation ensure sub-LSB ADC performance and glitch-free FPGA startup. |
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 |
|---|---|---|---|
| TLV1117-15CDCYR | ±2 % output accuracy; 1.2 V dropout at 800 mA; 800 mA max output; no SOA control | Limited to lower-power applications where tighter accuracy and SOA protection are not required | Select when cost sensitivity outweighs need for 1 A capability and ±1 % tolerance |
| LD1117S15TR | ±2 % accuracy; 1.1 V dropout at 800 mA; 1 A output; thermal shutdown only (no SOA control) | Suitable for general-purpose 1.5 V regulation but lacks dynamic current limiting under high Vin–Vout stress | Choose for legacy designs already using STMicro's LD1117 footprint; verify SOA absence does not impact reliability |
Compared with TLV1117-15CDCYR and LD1117S15TR, the NX1117C15Z,115 delivers tighter output accuracy, integrated SOA protection for high-differential-voltage operation, and guaranteed 1 A output across full temperature range-making it preferred for industrial and USB-C PD systems demanding robustness and precision.
Availability
NX1117C15Z,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 NX1117C15Z,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 specifically for high-reliability post-regulation in space-constrained, thermally demanding environments-emphasizing SOA control, wide input range, and ±1 % accuracy in SOT223 packaging.
FAQ
What is the maximum input voltage rating for NX1117C15Z,115?
The NX1117C15Z,115 supports a maximum input voltage of 20 V per absolute maximum ratings. However, its recommended operating input range is 2.9 V to 11.5 V for stable 1.5 V regulation at full 1 A load. Exceeding 11.5 V requires careful thermal design due to SOA-limited current and increased power dissipation.
Does NX1117C15Z,115 require an external capacitor for stability?
Yes, the NX1117C15Z,115 requires a minimum 680 nF ceramic output capacitor (with ≤1 Ω ESR) placed close to the device for stability and transient response. Input capacitance of 680 nF is also recommended. Unlike older LDOs, it does not require specific ESR ranges, simplifying design with modern X7R/X5R types.
How does SOA control function in NX1117C15Z,115 during high input-to-output differentials?
In the NX1117C15Z,115, SOA control actively reduces output current when Vin–Vout exceeds safe limits-preventing junction temperature rise beyond 150 °C. For example, at 12 V input and 1.5 V output, current is limited to ~1.1 A (not 1.5 A) to maintain safe power density, unlike regulators without SOA.
What is the thermal resistance of NX1117C15Z,115 on a standard FR4 PCB?
When mounted on a standard FR4 PCB with single-sided copper and tin-plated finish, the NX1117C15Z,115 exhibits a typical junction-to-ambient thermal resistance (Rth(j-a)) of 150 K/W. With a 6 cm² output copper pad, this improves to 72 K/W-enabling 1 A operation up to +70 °C ambient without forced air cooling.
Is NX1117C15Z,115 pin-compatible with other 1.5 V LDOs in SOT223 package?
The NX1117C15Z,115 uses standard SOT223 pinout (Pin 1 = GND, Pin 2 = VOUT, Pin 3 = VIN, Pin 4 = VOUT), matching industry-standard footprints. However, it is not a direct drop-in replacement for all SOT223 1.5 V LDOs due to differences in SOA behavior, PSRR profile, and quiescent current vs. input voltage characteristics-layout reuse is possible, but electrical validation is required.
NX1117C15Z,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):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.2V @ 800mA
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 6 mA
- Current - Supply (Max):
- -
- PSRR:
- 69dB (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
NX1117C15Z,115 FAQ
1.How can I place an order for NX1117C15Z,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for NX1117C15Z,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 NX1117C15Z,115 reliable?
The price and inventory of NX1117C15Z,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NX1117C15Z,115 is usually 5 days.
3.What payment methods are accepted for NX1117C15Z,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NX1117C15Z,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NX1117C15Z,115?
NX1117C15Z,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NX1117C15Z,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 NX1117C15Z,115?
For technical support, including NX1117C15Z,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NX1117C15Z,115 requirements.
6.How does Aetrix verify that NX1117C15Z,115 is sourced from the original manufacturer or authorized distributors?
All NX1117C15Z,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 NX1117C15Z,115 meets industry standards.
7.What is the process for return or replacement of NX1117C15Z,115?
All NX1117C15Z,115 units undergo pre-shipment inspection (PSI). If there is an issue with NX1117C15Z,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 NX1117C15Z,115 part is unused and in its original packaging.
Return procedure for NX1117C15Z,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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