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onsemi NCV1117DT25RKG
- Part No.:
- NCV1117DT25RKG
- Manufacturer:
- onsemi
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
NCV1117DT25RKG.pdf
- Description:
- IC REG LINEAR 2.5V 1A DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:2,189
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Product details
Overview
NCV1117DT25RKG from onsemi is an automotive-grade, low-dropout linear voltage regulator delivering a fixed 2.5 V output at up to 1.0 A, with 1.2 V max dropout at 800 mA over temperature, ±1.0% output voltage accuracy, and integrated thermal shutdown and current limiting. It serves as a point-of-load regulator in engine control units and ADAS power domains.
For engineers reviewing the NCV1117DT25RKG datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at full load, thermal performance in DPAK package, AEC-Q100 qualification status, and compatibility with 20 V max input for automotive transients.
Technical Context
The NCV1117DT25RKG uses a bandgap-referenced error amplifier with internal trimming to maintain 2.5 V output within ±1.0% across −40°C to +125°C ambient. Its PNP pass transistor architecture enables low dropout while supporting up to 20 V input without external components.
Thermal protection activates at ~175°C junction temperature, disabling output until cooldown; safe operating area compensation prevents secondary breakdown during overload. The device requires no minimum load for regulation and supports stable operation with ≥4.7 µF output capacitance and ≤2.2 Ω ESR.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5 V, trimmed to ±1.0% accuracy - ensures precise logic supply for microcontrollers and sensors. |
| Max Output Current | 1.0 A continuous - sufficient for powering multiple ICs in automotive ECUs without parallel devices. |
| Dropout Voltage | 1.2 V max at 800 mA over temperature - enables operation down to 3.7 V input during cold-crank conditions (9 V battery). |
| Input Voltage Range | Up to 20 V - withstands ISO 7637-2 pulse 5a (20 V/100 ms) and load dump transients. |
| Quiescent Current | 5.2 mA typical at 10 V input - low enough for always-on modules without excessive standby drain. |
| Ripple Rejection | 62 dB at 120 Hz - suppresses alternator ripple in vehicle electrical systems. |
| Thermal Shutdown | Activates at ~175°C junction - protects against sustained overload or insufficient heatsinking in enclosed modules. |
Pinout & Package
DPAK (TO-252-3) package with exposed metal tab thermally connected to Pin 2 (Output); designed for PCB copper pour heatsinking per Case 369C outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Ground / Adjust | Reference node for internal bandgap; tied directly to system ground plane for stability and noise immunity. |
| 2 | Output | Regulated 2.5 V supply; tab connection enables direct thermal coupling to PCB copper for >6.0°C/W RθJC. |
| 3 | Input | Unregulated input (up to 20 V); requires local 10 µF ceramic bypass capacitor within 5 mm of pin. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Rated for automotive applications with PPAP capability - meets reliability and traceability requirements for Tier 1 suppliers. |
| No minimum load requirement | Stable regulation at 0 mA output - eliminates need for dummy loads in low-power sleep modes. |
| Internal current limit & SOA compensation | Prevents destructive latch-up during short circuits - allows safe operation without external foldback circuitry. |
| Pb-free DPAK package | RoHS-compliant construction with tin-silver-copper finish - compatible with lead-free reflow profiles and automotive soldering standards. |
| Low thermal resistance | RθJC = 6.0°C/W - enables 1.0 A operation with minimal heatsink area on 2 oz. copper PCB. |
Applications
| Engine Control Unit (ECU) Core Supply | ADAS Camera Module Power |
|---|---|
Use Scenario: Powers 32-bit MCU core and CAN transceiver in gasoline/diesel ECU under wide temperature and transient conditions. IC Role / Device Role / Timing Role: Primary 2.5 V LDO supplying digital logic rails; maintains regulation during cranking (6.5–9 V battery) and load dump (20 V). Use Value: ±1.0% output accuracy ensures reliable MCU clock generation and ADC reference stability across −40°C to +125°C. | Use Scenario: Supplies image signal processor and high-speed serializer in 77 GHz radar camera fusion module. IC Role / Device Role / Timing Role: Clean, low-noise 2.5 V rail for analog front-end and PLL circuits; rejects alternator ripple via 62 dB rejection at 120 Hz. Use Value: 1.2 V dropout enables operation from 3.7 V input during cold-crank, preserving functionality when battery dips below 8 V. |
| Automotive Infotainment SoC I/O Rail | Electric Power Steering (EPS) Sensor Interface |
Use Scenario: Provides 2.5 V I/O supply for application processor in head unit, co-located with switching DC/DC converters. IC Role / Device Role / Timing Role: Post-regulator filtering switching noise; decouples noisy digital domains from sensitive analog interfaces. Use Value: Stable output with <0.1%/W thermal regulation minimizes timing jitter on high-speed MIPI D-PHY links. | Use Scenario: Powers Hall-effect position sensors and analog signal conditioners in EPS motor control assembly. IC Role / Device Role / Timing Role: Precision analog supply referenced to MCU ADC; immune to load transients from motor commutation spikes. Use Value: Load regulation of 3.3 mV (0–800 mA) ensures consistent sensor offset calibration across torque demand range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73325PDBVR | Lower quiescent current (45 µA), lower max current (300 mA), SOT-23 package | Suitable for ultra-low-power always-on nodes but not for 1 A ECU core loads | Select only if load current ≤300 mA and standby current is critical; not a drop-in replacement. |
| TPS78525QWDRBRQ1 | AEC-Q100 Grade 1, 1 A output, 26 V max input, 2.5 V fixed, thermal foldback | Higher cost, tighter initial accuracy (±0.5%), enhanced transient response | Preferred for safety-critical ASIL-B domains requiring tighter tolerance and faster line/load regulation. |
Compared with TLV73325PDBVR and TPS78525QWDRBRQ1, the NCV1117DT25RKG offers optimal balance of automotive qualification, 1 A capability, and cost for non-ASIL applications where ±1.0% accuracy and proven field reliability are sufficient.
Availability
NCV1117DT25RKG is available at Aetrix Electronics and suitable for automotive ECU design, ADAS sensor power, and infotainment SoC I/O rail applications requiring stable component supply, long-term lifecycle support, and AEC-Q100 compliance.
Supply support for NCV1117DT25RKG 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 (Nasdaq: ON) is a global semiconductor supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCV1117 series belongs to onsemi's automotive-qualified analog power portfolio, engineered specifically for robust, low-noise, high-reliability voltage regulation in harsh-temperature vehicle environments.
FAQ
What is the maximum input voltage rating for the NCV1117DT25RKG?
The NCV1117DT25RKG supports a maximum input voltage of 20 V, enabling reliable operation during automotive load dump events per ISO 7637-2 Pulse 5a. This rating is validated across the full −40°C to +125°C operating ambient range and includes margin for transient overshoot. Exceeding 20 V risks permanent damage due to internal junction breakdown.
Does the NCV1117DT25RKG require an external output capacitor, and what are the specifications?
Yes, the NCV1117DT25RKG requires a minimum 4.7 µF output capacitor with ESR between 33 mΩ (typ) and 2.2 Ω for stability. Ceramic, tantalum, or aluminum electrolytic types are acceptable if they meet these specs across −40°C to +125°C. The capacitor must be placed within 5 mm of Pins 1 and 2 to minimize loop inductance and ensure transient response integrity.
Is the NCV1117DT25RKG pin-compatible with legacy regulators like the LM317?
No, the NCV1117DT25RKG is not pin-compatible with the LM317. While the NCP1117 family (industrial grade) shares pinout with LM317, the NCV1117DT25RKG uses DPAK (Pin 1=Ground, Pin 2=Output, Pin 3=Input) - differing from LM317's TO-220 (Pin 1=Adjust, Pin 2=Output, Pin 3=Input). Direct replacement requires PCB layout revision.
What thermal performance can be expected from the NCV1117DT25RKG in a standard 2 oz. copper PCB layout?
With a 2 oz. copper pad connected to the exposed tab (Pin 2), the NCV1117DT25RKG achieves RθJA ≈ 67°C/W and RθJC = 6.0°C/W. At 1.0 A load and 50°C ambient, junction temperature rises ~72°C above ambient, reaching ~122°C - within the −40°C to +125°C operating limit. Larger copper areas further reduce RθJA per Figure 22.
How does the NCV1117DT25RKG handle short-circuit conditions?
The NCV1117DT25RKG incorporates internal current limiting and thermal shutdown. Under short-circuit, output current is clamped to ~1.5 A (min) at room temperature, then thermal shutdown activates at ~175°C junction temperature, cycling output off/on until fault clears. Safe operating area compensation prevents second breakdown, allowing indefinite short-circuit survival with adequate heatsinking.
NCV1117DT25RKG 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):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.2V @ 800mA
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 10 mA
- Current - Supply (Max):
- -
- PSRR:
- 68dB (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
NCV1117DT25RKG FAQ
1.How can I place an order for NCV1117DT25RKG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV1117DT25RKG 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 NCV1117DT25RKG reliable?
The price and inventory of NCV1117DT25RKG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV1117DT25RKG is usually 5 days.
3.What payment methods are accepted for NCV1117DT25RKG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV1117DT25RKG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV1117DT25RKG?
NCV1117DT25RKG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV1117DT25RKG 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 NCV1117DT25RKG?
For technical support, including NCV1117DT25RKG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV1117DT25RKG requirements.
6.How does Aetrix verify that NCV1117DT25RKG is sourced from the original manufacturer or authorized distributors?
All NCV1117DT25RKG 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 NCV1117DT25RKG meets industry standards.
7.What is the process for return or replacement of NCV1117DT25RKG?
All NCV1117DT25RKG units undergo pre-shipment inspection (PSI). If there is an issue with NCV1117DT25RKG, 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 NCV1117DT25RKG part is unused and in its original packaging.
Return procedure for NCV1117DT25RKG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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