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onsemi NCV1117DT15RK
- Part No.:
- NCV1117DT15RK
- Manufacturer:
- onsemi
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
NCV1117DT15RK.pdf
- Description:
- IC REG LINEAR 1.5V 1A DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:3,020
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Product details
Overview
NCV1117DT15RK from onsemi is an automotive-grade, 1.5 V fixed-output, low-dropout linear voltage regulator in DPAK package, delivering ≥1.0 A output current with 1.2 V max dropout at 800 mA, ±1.0% output voltage accuracy, and integrated thermal shutdown, current limiting, and safe operating area protection. It serves as a post-regulator in battery chargers and hard drive controllers.
For engineers reviewing the NCV1117DT15RK datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at full load, thermal performance in DPAK with PCB copper heatsinking, AEC-Q100 qualification for automotive use, and compatibility with 10 µF input/output ceramic capacitors.
Technical Context
The NCV1117DT15RK implements a monolithic LDO architecture with internal bandgap reference trimmed to ±1.0%, enabling stable 1.5 V output across −40°C to +125°C ambient. Its dropout voltage remains ≤1.2 V up to 800 mA over temperature, supporting operation with input as low as 2.9 V (Vin ≥ Vout + 1.4 V).
Protection circuitry includes foldback current limiting, thermal shutdown activation at ~175°C junction temperature, and safe operating area compensation. The device operates with up to 20 V input and requires no minimum load for regulation-critical for low-power standby modes in automotive ECUs and industrial controllers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5 V, ±1.0% accuracy over temperature and line/load - ensures stable core logic supply without external feedback components. |
| Max Dropout Voltage | 1.2 V at 800 mA over temperature - enables regulation from 2.7 V input in battery-powered systems down to end-of-discharge. |
| Output Current | ≥1.0 A continuous - supports high-current microcontrollers, FPGAs, or sensor arrays without external pass transistors. |
| Input Voltage Range | 2.9 V to 20 V - accommodates wide-input automotive (12 V nominal) and industrial (24 V) rails with transient tolerance. |
| Thermal Shutdown | Activates at ~175°C junction - prevents catastrophic failure during overload or insufficient heatsinking in enclosed modules. |
| Ripple Rejection | 66 dB at 120 Hz (Vin−Vout = 6.4 V, Iout = 500 mA) - suppresses switching noise from upstream DC/DC converters in mixed-signal designs. |
| Quiescent Current | 3.6 mA at Vin = 11.5 V - minimizes standby power loss in always-on vehicle subsystems. |
Pinout & Package
DPAK (TO-252-3) package with exposed metal tab thermally and electrically connected to Pin 2 (Output). Standard 3-pin surface-mount footprint (Case 369C), compatible with automated assembly and PCB copper pour heatsinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Ground / Adjust | Reference node for internal error amplifier; tied directly to system ground plane for stable regulation and minimal noise coupling. |
| 2 | Output | Main regulated 1.5 V supply; connected to exposed tab for low-thermal-resistance path to PCB copper heatsink (RJC = 6.0°C/W). |
| 3 | Input | Unregulated input (2.9–20 V); requires local 10 µF ceramic bypass capacitor placed adjacent to pin for transient stability. |
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 for engine control, ADAS, and body electronics. |
| No minimum load requirement | Regulates stably from 0 mA to 1.0 A - eliminates need for wasteful bleed resistors in low-power sleep states. |
| Internal current limiting | Foldback-type protection limits peak output current to ~1.5 A at room temperature - prevents damage during short-circuit events without external fusing. |
| Low ESR capacitor compatible | Stable with 4.7 µF–10 µF ceramic, tantalum, or aluminum electrolytic output capacitors (ESR 33 mΩ–2.2 Ω) - simplifies BOM and reduces board space. |
| Pb-free and RoHS compliant | Meets global environmental regulations; marked with "G" suffix and conforms to JEDEC J-STD-020 moisture sensitivity level 3. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Hard Disk Drive Controller |
|---|---|
Use Scenario: Powers 1.5 V core rail of ARM Cortex-M7 microcontroller in under-hood ECU exposed to −40°C to +125°C ambient and load dump transients. IC Role / Device Role / Timing Role: Primary low-noise, high-current LDO providing clean 1.5 V supply to MCU core and memory interface. Use Value: 66 dB ripple rejection suppresses noise from 48 V–12 V DC/DC converter; 1.2 V dropout enables operation during cold-crank (6.5 V battery). | Use Scenario: Regulates 1.5 V supply for SATA controller ASIC in enterprise storage enclosure with forced-air cooling. IC Role / Device Role / Timing Role: Post-regulator stabilizing output of buck converter feeding high-speed SerDes PHY. Use Value: ±1.0% output accuracy ensures reliable DDR I/O timing margins; 1.0 A capability supports burst-mode read/write operations. |
| Battery Charger Management System | Point-of-Load Regulation in PLC Module |
Use Scenario: Supplies 1.5 V bias to fuel gauge IC and charging algorithm processor in 3-cell Li-ion portable charger. IC Role / Device Role / Timing Role: Fixed-output LDO delivering precision reference voltage for ADC and comparator circuits. Use Value: No minimum load requirement allows zero-current sleep mode; thermal shutdown protects against overheating during fast-charge cycles. | Use Scenario: Provides isolated 1.5 V rail for FPGA configuration memory and I/O banks in DIN-rail mounted programmable logic controller. IC Role / Device Role / Timing Role: Local point-of-load regulator decoupling FPGA power domain from shared 5 V backplane. Use Value: DPAK package enables direct mounting to 2 oz. copper heatsink pad; 1.0 A rating supports FPGA configuration + partial reconfiguration loads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV1117-15CDKR | 1.5 V fixed, 800 mA max output, SOT-223 package, ±2% initial accuracy, no AEC-Q100 qualification | Targeted for commercial/industrial use only; lower current and accuracy limit suitability for automotive core rails | Select when cost-sensitive non-automotive designs require smaller footprint and lower thermal mass. |
| TPS7A4701RGWR | Adjustable 1.4–20.5 V, 1 A, 310 µVRMS noise, 300 µA quiescent, WQFN-20 package | Ultra-low noise and adjustable output - suited for RF, precision analog, or mixed-signal SoCs requiring custom voltages | Select when ultra-low noise (<0.5 mVRMS) or programmable output is required, accepting higher cost and complexity. |
Compared with TLV1117-15CDKR and TPS7A4701RGWR, the NCV1117DT15RK uniquely combines automotive qualification, 1.0 A output, and fixed 1.5 V with proven thermal robustness in DPAK - making it optimal for cost-constrained, high-reliability 1.5 V core supplies where noise and adjustability are secondary.
Availability
NCV1117DT15RK is available at Aetrix Electronics and suitable for automotive engine control units, industrial hard disk drive controllers, battery charger management systems, and PLC point-of-load regulation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for NCV1117DT15RK 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 power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCV1117 series belongs to onsemi's automotive-qualified linear regulator product line, designed specifically for demanding under-hood and chassis-mounted electronics requiring AEC-Q100 compliance, extended temperature operation, and robust fault protection.
FAQ
What is the maximum input voltage rating for the NCV1117DT15RK?
The NCV1117DT15RK has a maximum input voltage rating of 20 V, as specified in the Absolute Maximum Ratings table. Operation above this voltage risks permanent damage. For reliable long-term use, design input rails to stay within 2.9 V to 20 V, with derating recommended above 15 V under high-temperature conditions to maintain thermal margin.
Does the NCV1117DT15RK require an external capacitor on the adjust pin?
No - the NCV1117DT15RK is a fixed-output variant; its adjust pin (Pin 1) is internally connected and does not require external components. Unlike the adjustable NCV1117DTARKG, this part integrates the feedback network, eliminating the need for R1/R2 resistors or Cadj bypass capacitors.
What thermal performance can be expected from the NCV1117DT15RK in DPAK package?
In DPAK (Case 369C), the NCV1117DT15RK achieves RJC = 6.0°C/W and RJA ≈ 67°C/W with minimum-size PCB copper pad. With 2 oz. copper and 25 mm² heatsink area, RJA drops to ~30°C/W, enabling >1.0 A continuous operation at +85°C ambient - verified in Figure 22 of the datasheet.
Is the NCV1117DT15RK pin-compatible with older LM317-based designs?
No - the NCV1117DT15RK uses a 3-pin DPAK layout (Input–Ground–Output), while the LM317 is TO-220/TO-263 with Adjust–Output–Input pinout. However, the NCP1117/NCV1117 family *is* pin-compatible with LM317 *in SOT-223*, but the DPAK variant (DT suffix) has different mechanical and thermal characteristics requiring PCB redesign.
What is the typical output voltage accuracy of the NCV1117DT15RK over temperature?
The NCV1117DT15RK maintains output voltage within ±1.0% of 1.5 V across the full operating range of −40°C to +125°C ambient temperature. This is achieved via on-chip trimming of the internal bandgap reference and is confirmed in the Electrical Characteristics table under "Output Voltage, Fixed Output Devices" for the 1.5 V variant.
NCV1117DT15RK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- 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):
- 10 mA
- Current - Supply (Max):
- -
- PSRR:
- 72dB (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:
- DPAK
NCV1117DT15RK FAQ
1.How can I place an order for NCV1117DT15RK through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV1117DT15RK 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 NCV1117DT15RK reliable?
The price and inventory of NCV1117DT15RK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV1117DT15RK is usually 5 days.
3.What payment methods are accepted for NCV1117DT15RK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV1117DT15RK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV1117DT15RK?
NCV1117DT15RK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV1117DT15RK 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 NCV1117DT15RK?
For technical support, including NCV1117DT15RK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV1117DT15RK requirements.
6.How does Aetrix verify that NCV1117DT15RK is sourced from the original manufacturer or authorized distributors?
All NCV1117DT15RK 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 NCV1117DT15RK meets industry standards.
7.What is the process for return or replacement of NCV1117DT15RK?
All NCV1117DT15RK units undergo pre-shipment inspection (PSI). If there is an issue with NCV1117DT15RK, 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 NCV1117DT15RK part is unused and in its original packaging.
Return procedure for NCV1117DT15RK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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