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onsemi NCV1117STAT3
- Part No.:
- NCV1117STAT3
- Manufacturer:
- onsemi
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
NCV1117STAT3.pdf
- Description:
- IC REG LINEAR POS ADJ 1A SOT223
- Quantity:
- Payment:
- Shipping:
Inventory:3,198
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Product details
Overview
NCV1117STAT3 from onsemi is an automotive-grade, low-dropout (LDO) positive voltage regulator in SOT-223 package, delivering ≥1.0 A output current with 1.2 V max dropout at 800 mA over temperature, ±1.0% output voltage accuracy, and operation up to 20 V input. It serves as a post-regulator in switching power supplies and point-of-load regulator in battery chargers and hard drive controllers.
For engineers reviewing the NCV1117STAT3 datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at full load, thermal shutdown behavior, AEC-Q100 qualification, and fixed vs. adjustable output configuration compatibility with existing PCB layout.
Technical Context
The NCV1117STAT3 implements a floating-adjust architecture with internal 1.25 V reference trimmed to ±1.0%, enabling precise output programming via external resistors. Its dropout voltage remains stable across −40°C to +125°C ambient, and it features integrated safe operating area (SOA) compensation to prevent thermal runaway during transient overload.
Internal protection includes foldback current limiting, thermal shutdown activation at ~175°C junction temperature, and robust ESD immunity (HBM 2000 V). The device operates without minimum load for fixed-output variants but requires ≥0.8 mA minimum load for regulation in adjustable mode per datasheet Section 3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | ≥1000 mA continuous - supports high-current digital logic rails and analog subsystems without external pass transistors. |
| Max Dropout Voltage | 1.20 V at 800 mA over temperature - enables stable 3.3 V output from 4.75 V input in automotive cold-crank conditions. |
| Output Voltage Accuracy | ±1.0% at 25°C - ensures tight tolerance for sensitive ADC references and precision analog circuitry. |
| Input Voltage Range | Up to 20 V - accommodates unregulated 12 V automotive battery systems with load dump transients. |
| Thermal Shutdown Threshold | ~175°C junction - protects against sustained overtemperature due to inadequate heatsinking or airflow. |
| Quiescent Current | 6.0 mA typical at 12 V input - balances low-noise regulation with standby power efficiency in always-on modules. |
| Ripple Rejection | 60 dB at 120 Hz (5 V output) - suppresses switching noise from upstream DC/DC converters in mixed-signal applications. |
Pinout & Package
SOT-223 package (Case 318H), surface-mount, with exposed metal tab thermally connected to Pin 2 (Output) for PCB copper heatsinking. Compatible with standard reflow profiles and IPC-7351B land pattern.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Adjust / Ground | Reference node for output voltage setting; connects to ground for fixed-output use or to resistor divider for adjustable configuration. |
| 2 | Output | Main regulated output; electrically and thermally tied to exposed heatsink tab - must be routed to large copper pour for thermal management. |
| 3 | Input | Unregulated input supply; requires local 10 µF ceramic bypass capacitor placed adjacent to pin for stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Qualified for automotive applications per Grade 1 (−40°C to +125°C) with PPAP capability - meets OEM reliability requirements. |
| No minimum load required (fixed versions) | Stable regulation down to 0 mA load - eliminates need for dummy load resistors in low-power sleep modes. |
| Internal SOA compensation | Prevents secondary breakdown during short-circuit events - enables robust operation without external current-sense circuitry. |
| Thermal shutdown with auto-recovery | Hysteresis-based cycling prevents latch-up; allows self-reset after cooling - avoids system-level fault propagation. |
| Pb-free, RoHS-compliant | Meets EU RoHS Directive 2011/65/EU and JESD204 - supports global manufacturing and end-of-life compliance. |
Applications
| Automotive Infotainment Power Rail | Industrial PLC I/O Module |
|---|---|
Use Scenario: Supplies clean 3.3 V to MCU, CAN transceiver, and audio codec in head unit under wide battery voltage range (6–16 V). IC Role / Device Role / Timing Role: Primary LDO post-regulator providing low-noise, thermally robust power to safety-critical subsystems. Use Value: Maintains regulation during cold-crank (6.5 V min) with <1.2 V dropout, eliminating brownout resets and ensuring CAN bus continuity. | Use Scenario: Powers isolated analog front-end and digital logic in modular I/O card operating in 0–70°C industrial enclosures. IC Role / Device Role / Timing Role: Point-of-load regulator delivering stable 5.0 V to ADC drivers and FPGA configuration circuitry. Use Value: ±1.0% output accuracy ensures 12-bit ADC full-scale error remains <0.5 LSB; thermal shutdown prevents field failures from convection-limited heatsinking. |
| Battery Charger Management Board | Hard Drive Controller Board |
Use Scenario: Regulates 1.8 V for charging IC logic and 2.5 V for USB PHY in portable Li-ion charger with USB-C PD input. IC Role / Device Role / Timing Role: Dual-rail LDO supplying tightly coupled digital domains with independent enable control. Use Value: Low quiescent current (≤6 mA) extends battery runtime in standby; no minimum load requirement simplifies power sequencing. | Use Scenario: Provides 2.85 V active SCSI termination voltage and 3.3 V logic rail for SATA controller ASIC in enterprise storage enclosure. IC Role / Device Role / Timing Role: Precision voltage source for impedance-matched bus termination and core logic supply. Use Value: 2.85 V fixed variant ensures SCSI bus signal integrity per ANSI X3.131-1994; ±1.0% tolerance guarantees termination resistance accuracy within 2%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV1117ST33T3G | Fixed 3.3 V output; same SOT-223 package, AEC-Q100 Grade 1, identical thermal and electrical specs except output voltage. | Eliminates external resistor network; reduces BOM count and layout complexity for dedicated 3.3 V rails. | Select when fixed 3.3 V output suffices and design does not require programmability. |
| TLV1117-33CDCYR | 3.3 V fixed, 800 mA rated, SO-8 package, non-automotive grade (−40°C to +125°C but not AEC-Q100 qualified). | Lacks automotive qualification and SOA compensation; lower current rating limits use in high-transient environments. | Acceptable for industrial or consumer designs where AEC-Q100 is not mandated and 800 mA load ceiling is sufficient. |
Compared with NCV1117STAT3, the NCV1117ST33T3G offers plug-and-play 3.3 V regulation without external components, while TLV1117-33CDCYR provides cost-effective non-automotive replacement but lacks thermal robustness and automotive validation for mission-critical systems.
Availability
NCV1117STAT3 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial PLC I/O modules, and battery charger management boards requiring stable component supply with long lifecycle support and AEC-Q100 traceability.
Supply support for NCV1117STAT3 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 specializing in energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCV1117 series belongs to onsemi's automotive power management portfolio, designed specifically for AEC-Q100-compliant point-of-load regulation in harsh environments with wide input voltage and thermal ranges.
FAQ
What is the maximum input voltage rating for the NCV1117STAT3?
The NCV1117STAT3 supports a maximum input voltage of 20 V, as specified in the Absolute Maximum Ratings table. This allows direct connection to unregulated 12 V automotive battery systems, including scenarios with load dump transients up to 20 V, provided external clamping or filtering is implemented per system-level requirements.
Does the NCV1117STAT3 require an external capacitor on the Adjust pin?
Yes, the NCV1117STAT3 requires an external bypass capacitor (Cadj) on the Adjust pin when used in adjustable configuration to restore ripple rejection degraded by output voltage scaling. For 120 Hz ripple, Cadj ≥ 11.1 µF is recommended; for 50 kHz switching noise, ≥0.027 µF suffices, per datasheet Figure 24 and Application Information section.
Is the NCV1117STAT3 pin-compatible with the LM317?
Yes, the NCV1117STAT3 is pin-compatible with the LM317 in SOT-223 package per datasheet Section 9, sharing identical Pin 1 (Adjust), Pin 2 (Output), and Pin 3 (Input) assignments. However, NCV1117STAT3 offers lower dropout (1.2 V vs. 2–3 V), tighter accuracy (±1.0% vs. ±1.5%), and integrated thermal shutdown - requiring no external protection circuitry.
What is the minimum load current required for regulation with the NCV1117STAT3?
The NCV1117STAT3 requires no minimum load for fixed-output variants, but as an adjustable regulator (STAT3 suffix denotes adjustable), it needs ≥0.8 mA minimum load current at Vin = 15 V to maintain regulation, per Electrical Characteristics Table on page 3 of the datasheet. This is satisfied by typical resistor divider networks or downstream circuitry.
How is thermal performance affected by PCB copper area for the NCV1117STAT3?
Thermal resistance (RJA) of the NCV1117STAT3 in SOT-223 drops from 160°C/W (minimum pad) to ~60°C/W with 100 mm² of 2 oz. copper connected to the exposed tab (Pin 2), per Figure 21. Doubling copper area beyond 100 mm² yields diminishing returns; optimal heatsinking uses ≥200 mm² with thermal vias to inner layers.
NCV1117STAT3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 20V
- Voltage - Output (Min/Fixed):
- 1.25V
- Voltage - Output (Max):
- 18.8V
- Voltage Dropout (Max):
- 1.2V @ 800mA
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 10 mA
- Current - Supply (Max):
- -
- PSRR:
- 73dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223
NCV1117STAT3 FAQ
1.How can I place an order for NCV1117STAT3 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV1117STAT3 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 NCV1117STAT3 reliable?
The price and inventory of NCV1117STAT3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV1117STAT3 is usually 5 days.
3.What payment methods are accepted for NCV1117STAT3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV1117STAT3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV1117STAT3?
NCV1117STAT3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV1117STAT3 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 NCV1117STAT3?
For technical support, including NCV1117STAT3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV1117STAT3 requirements.
6.How does Aetrix verify that NCV1117STAT3 is sourced from the original manufacturer or authorized distributors?
All NCV1117STAT3 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 NCV1117STAT3 meets industry standards.
7.What is the process for return or replacement of NCV1117STAT3?
All NCV1117STAT3 units undergo pre-shipment inspection (PSI). If there is an issue with NCV1117STAT3, 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 NCV1117STAT3 part is unused and in its original packaging.
Return procedure for NCV1117STAT3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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