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onsemi NCV1117DT50RK
- Part No.:
- NCV1117DT50RK
- Manufacturer:
- onsemi
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
NCV1117DT50RK.pdf
- Description:
- IC REG LDO POS 1A 5.0V DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
NCV1117DT50RK from onsemi is an automotive-grade, 5.0 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 over temperature, ±1.0% output voltage accuracy, and integrated thermal shutdown, current limiting, and safe operating area protection - used for post-regulation in switching power supplies and hard drive controllers.
For engineers reviewing the NCV1117DT50RK datasheet, pinout, applications, or equivalent options, key selection criteria include automotive AEC-Q100 qualification, 5.0 V ±1.0% output stability across −40°C to +125°C, 20 V max input voltage capability, and DPAK thermal performance with heatsink tab tied to output pin.
Technical Context
The NCV1117DT50RK implements a monolithic PNP pass transistor architecture with internal bandgap reference trimmed to ±1.0%, enabling stable 5.0 V regulation without minimum load. Its dropout behavior is characterized up to 800 mA (1.2 V max), and it operates across 6.5 V to 12 V input range for 5.0 V output while maintaining line and load regulation within 0.9 mV and 6.7 mV respectively.
Thermal protection activates at ~175°C junction temperature, and the device requires external 10 µF input/output capacitors for stability. The DPAK package features an exposed metal tab electrically connected to Pin 2 (Output), enabling PCB copper pour as heatsink with RJA = 67°C/W (min pad) and RJC = 6.0°C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±1.0% (1.5 V to 12 V fixed options available; no minimum load required) |
| Max Output Current | ≥1.0 A (limited to 1.0 A when input >12 V per datasheet Note 3) |
| Dropout Voltage | 1.2 V max at 800 mA over temperature (enables operation with Vin as low as 6.2 V) |
| Input Voltage Range | 6.5 V to 12 V (for 5.0 V output); absolute max 20 V |
| Quiescent Current | 6.0 mA typical at Vin = 15 V (low bias current supports battery-backed systems) |
| Ripple Rejection | 60 dB at 120 Hz (Vin−Vout = 6.4 V, Iout = 500 mA; critical for post-regulating switchers) |
| Operating Temp | −40°C to +125°C ambient (AEC-Q100 qualified for automotive under-hood use) |
| Protection | Thermal shutdown, output current limiting, safe operating area compensation |
Pinout & Package
DPAK package (Case 369C), surface-mount, with exposed metal tab thermally and electrically connected to Pin 2 (Output). Dimensions: 6.10 × 6.54 × 2.28 mm, 2.29 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Ground / Adjust | Reference node for internal error amplifier; connects to system ground; no external resistor needed for fixed-output version |
| 2 | Output | Regulated 5.0 V output; electrically and thermally tied to exposed heatsink tab |
| 3 | Input | Unregulated DC input (6.5–12 V typical for 5.0 V output); requires 10 µF bypass capacitor |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Automotive-grade reliability with PPAP capability and unique site/control change management |
| No Minimum Load | Stable regulation down to 0 mA output - eliminates need for dummy load resistors |
| Low Dropout | 1.2 V max at 800 mA enables efficient operation in tight VIN–VOUT margins (e.g., 7.2 V battery input) |
| Integrated Protection | Self-protecting against overcurrent, overtemperature, and SOA violations - reduces external component count |
| Pb-Free & RoHS | Halogen-free, lead-free DPAK package compliant with global environmental regulations |
Applications
| Hard Drive Controllers | Switching Power Supply Post-Regulation |
|---|---|
Use Scenario: Regulating 5.0 V rail for SATA/IDE controller logic and interface circuitry in enterprise storage systems. IC Role / Device Role / Timing Role: Primary low-noise, high-current LDO providing clean 5.0 V supply independent of main SMPS ripple. Use Value: Maintains ±1.0% output accuracy over temperature and load, ensuring reliable digital logic operation and signal integrity. | Use Scenario: Final-stage regulation after a buck converter to reduce switching noise and meet tight voltage tolerance requirements. IC Role / Device Role / Timing Role: Low-dropout post-regulator suppressing residual 120 Hz ripple and high-frequency switching artifacts. Use Value: 60 dB ripple rejection at 120 Hz and <6.7 mV load regulation enable clean power for sensitive analog or mixed-signal ICs. |
| Automotive Infotainment Power Rails | Battery Chargers (USB/12 V Input) |
Use Scenario: Supplying 5.0 V to USB host controllers, display drivers, and audio codecs in vehicle head units. IC Role / Device Role / Timing Role: Automotive-qualified LDO handling cold-crank (6.5 V min) and load-dump transients up to 20 V. Use Value: −40°C to +125°C operation and AEC-Q100 qualification ensure functional safety and long-term reliability in under-dash environments. | Use Scenario: Providing regulated 5.0 V output from variable 7–12 V battery sources in portable or vehicle-mounted chargers. IC Role / Device Role / Timing Role: Fixed-output LDO with thermal foldback protecting against sustained overload during fast-charging conditions. Use Value: Integrated thermal shutdown prevents damage during extended high-current draw (e.g., dual-port 2.4 A charging). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV1117-50CDR | 3.0 V to 15 V input range; 800 mA max output; ±2% output accuracy; SO-8 package | Lacks AEC-Q100 qualification and automotive temp range; lower current and accuracy | Acceptable for industrial non-automotive use where cost is prioritized over automotive compliance and precision |
| MCP1703T-5002E/MB | 250 mA max output; 2.7–13.2 V input; ±0.4% initial accuracy; SOT-23 package | Not suitable for >500 mA loads; lacks thermal/current protection; no automotive qualification | Only viable for ultra-low-power 5.0 V rails where current demand is <250 mA and protection features are externally managed |
Compared with TLV1117-50CDR and MCP1703T-5002E/MB, the NCV1117DT50RK delivers higher output current (1.0 A vs. 0.8 A/0.25 A), tighter voltage accuracy (±1.0% vs. ±2%/±0.4%), full automotive qualification, and integrated protection - making it the sole choice for demanding automotive and industrial 5.0 V point-of-load regulation.
Availability
NCV1117DT50RK is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial hard drive controllers, switching power supply post-regulation, and battery charger designs requiring stable component supply with automotive-grade reliability and long lifecycle support.
Supply support for NCV1117DT50RK 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 focused on energy-efficient electronics, delivering silicon 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 robust, high-reliability point-of-load regulation in harsh environments including engine control units, ADAS modules, and infotainment systems.
FAQ
What is the maximum input voltage rating for the NCV1117DT50RK?
The NCV1117DT50RK has an absolute maximum input voltage rating of 20 V. However, for reliable 5.0 V output operation, the recommended input range is 6.5 V to 12 V. Exceeding 12 V input while delivering ≥1.0 A output violates the device's safe operating area per datasheet Note 3 and may trigger current limiting or thermal shutdown.
Does the NCV1117DT50RK require an external capacitor on the ground pin?
No - the NCV1117DT50RK is a fixed-output variant and does not require an external capacitor on Pin 1 (Ground). Unlike the adjustable versions, it contains internal resistors for voltage setting. Only input (10 µF) and output (10 µF) bypass capacitors are mandatory for stability and transient response.
Is the heatsink tab of the NCV1117DT50RK electrically isolated?
No - the exposed metal tab on the DPAK package of the NCV1117DT50RK is electrically connected to Pin 2 (Output). This design enhances thermal dissipation but requires PCB layout isolation from other nets. It must be routed to the 5.0 V output plane or a dedicated copper pour tied to the output net.
What is the dropout voltage of the NCV1117DT50RK at 1.0 A output current?
The datasheet specifies dropout voltage up to 800 mA (1.2 V max). At 1.0 A, the NCV1117DT50RK enters current-limit mode when input exceeds 12 V (per Note 3), so 1.0 A operation is only guaranteed below that threshold. Measured dropout at 1.0 A is approximately 1.25 V - verified in Figure 5 of the datasheet under pulsed 1.0% duty cycle test conditions.
How does the NCV1117DT50RK differ from the standard NCP1117DT50RK?
The NCV1117DT50RK is the automotive-qualified version: it meets AEC-Q100 Grade 1 (−40°C to +125°C), includes PPAP capability, and undergoes additional process controls and traceability requirements. Electrically, it matches the NCP1117DT50RK in all key specs (5.0 V, 1.0 A, 1.2 V dropout), but is intended for safety-critical automotive applications where reliability and documentation rigor are mandatory.
NCV1117DT50RK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 20V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.2V @ 800mA
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 10 mA
- Current - Supply (Max):
- -
- PSRR:
- 61dB (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
NCV1117DT50RK FAQ
1.How can I place an order for NCV1117DT50RK through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV1117DT50RK 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 NCV1117DT50RK reliable?
The price and inventory of NCV1117DT50RK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV1117DT50RK is usually 5 days.
3.What payment methods are accepted for NCV1117DT50RK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV1117DT50RK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV1117DT50RK?
NCV1117DT50RK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV1117DT50RK 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 NCV1117DT50RK?
For technical support, including NCV1117DT50RK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV1117DT50RK requirements.
6.How does Aetrix verify that NCV1117DT50RK is sourced from the original manufacturer or authorized distributors?
All NCV1117DT50RK 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 NCV1117DT50RK meets industry standards.
7.What is the process for return or replacement of NCV1117DT50RK?
All NCV1117DT50RK units undergo pre-shipment inspection (PSI). If there is an issue with NCV1117DT50RK, 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 NCV1117DT50RK part is unused and in its original packaging.
Return procedure for NCV1117DT50RK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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