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onsemi NCV1117DT20RKG
- Part No.:
- NCV1117DT20RKG
- Manufacturer:
- onsemi
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
NCV1117DT20RKG.pdf
- Description:
- IC REG LINEAR 2V 1A DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:4,458
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Product details
Overview
NCV1117DT20RKG from onsemi is an automotive-grade, low-dropout linear voltage regulator delivering a fixed 2.0 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, current limiting, and safe operating area protection. It serves as a point-of-load regulator in battery-powered automotive control modules requiring stable low-voltage rail generation.
For engineers reviewing the NCV1117DT20RKG datasheet, pinout, applications, or equivalent options, key selection criteria include its AEC-Q100 qualification, DPAK package thermal performance, 20 V absolute maximum input voltage, no minimum load requirement, and compatibility with ceramic output capacitors down to 4.7 µF.
Technical Context
The NCV1117DT20RKG implements a bandgap-referenced error amplifier driving a PNP pass transistor, enabling low dropout operation without external compensation. Its internal 1.25 V reference is trimmed to ±1.0%, and regulation is maintained across −40°C to +125°C ambient temperature.
Protection circuitry includes foldback current limiting that reduces output current under short-circuit conditions, thermal shutdown activation at ~175°C junction temperature, and safe operating area (SOA) compensation to prevent secondary breakdown during transient overload events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.0 V ±1.0% (ensures stable logic supply for 2.0 V I/O interfaces) |
| Max Output Current | 1.0 A continuous (supports microcontroller cores or sensor signal chains) |
| Dropout Voltage | 1.2 V max at 800 mA (enables operation from 3.2 V input, e.g., LiFePO₄ battery) |
| Input Voltage Range | 2.9 V to 12 V (valid for regulated input; absolute max 20 V) |
| Line Regulation | 0.5 mV (for 2.0 V version, Vin = 3.4 V to 12 V, Iout = 0 mA) |
| Load Regulation | 3.0 mV (for 2.0 V version, Iout = 0–800 mA, Vin = 3.4 V) |
| Ripple Rejection | 60 dB at 120 Hz (suppresses switching noise from upstream DC/DC converters) |
| Quiescent Current | 4.5 mA (low static power draw for always-on automotive subsystems) |
Pinout & Package
DPAK (TO-252-3) package with exposed metal tab thermally connected to Pin 2 (Output); optimized for PCB copper heatsinking per Case 369C outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Ground | Reference node for internal error amplifier; connects to system ground plane |
| 2 | Output | Regulated 2.0 V supply; tab is electrically tied to this pin for thermal conduction |
| 3 | Input | Unregulated input (2.9–12 V); requires local 10 µF bypass capacitor |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Validated for automotive applications including engine control units and body electronics |
| No minimum load requirement | Stable regulation at zero load-eliminates need for dummy resistive loads |
| Thermal shutdown with hysteresis | Auto-recovery after cooling prevents latch-up during intermittent overloads |
| Internal SOA compensation | Prevents destructive second breakdown during output short-circuit transients |
| Pb-free DPAK package | RoHS-compliant, compatible with standard reflow profiles and automated assembly |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Powering 2.0 V analog front-end of LIN bus transceivers and door lock actuators in BCMs. IC Role / Device Role / Timing Role: Primary low-noise 2.0 V supply rail generator with ripple rejection >60 dB at 120 Hz. Use Value: Enables reliable communication under noisy vehicle electrical environments without external filtering. | Use Scenario: Providing precision 2.0 V reference and bias for 16-bit ADCs in industrial pressure sensors. IC Role / Device Role / Timing Role: Fixed-output LDO delivering ultra-stable voltage with ±1.0% accuracy over −40°C to +125°C. Use Value: Reduces system-level calibration frequency by maintaining reference stability across wide temperature range. |
| Automotive Infotainment Power Sequencing | Low-Power Telematics Modem Supply |
Use Scenario: Generating 2.0 V rail for memory interfaces (e.g., LPDDR2 I/O) in head unit SoCs. IC Role / Device Role / Timing Role: Point-of-regulation LDO with fast load transient response (<100 µs settling). Use Value: Prevents data corruption during burst-mode memory access by minimizing output voltage deviation. | Use Scenario: Supplying 2.0 V to cellular modem baseband processors in fleet tracking devices. IC Role / Device Role / Timing Role: Low-quiescent-current (4.5 mA) regulator supporting always-on GPS wake-up functionality. Use Value: Extends battery life in backup-power configurations by minimizing standby current draw. |
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 |
|---|---|---|---|
| TLV1117-20CDCYR | 2.0 V fixed, SOT-223, 800 mA max, ±2% accuracy, 1.2 V dropout at 800 mA | Commercial grade (−40°C to +125°C), not AEC-Q100 qualified | Select for cost-sensitive non-automotive designs where full automotive qualification is unnecessary |
| TPS7A4701RGWR | Adjustable (1.4–20.5 V), WQFN-20, 1 A, ±0.5% accuracy, 310 mV dropout at 1 A | Higher precision and lower dropout, but requires external resistors and layout for stability | Select when programmability, tighter tolerance, or ultra-low dropout is required despite added complexity |
Compared with TLV1117-20CDCYR and TPS7A4701RGWR, the NCV1117DT20RKG uniquely combines AEC-Q100 qualification, fixed 2.0 V output, no external components, and proven DPAK thermal performance for under-hood automotive use-making it optimal for production-grade automotive LDO applications where reliability and qualification are mandatory.
Availability
NCV1117DT20RKG is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, and telematics modems requiring stable component supply, long-term lifecycle support, and AEC-Q100 compliance.
Supply support for NCV1117DT20RKG 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 leader delivering energy-efficient, intelligent power and sensing 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, low-noise, high-reliability power delivery in harsh-temperature automotive environments.
FAQ
What is the maximum input voltage rating for the NCV1117DT20RKG?
The NCV1117DT20RKG has an absolute maximum input voltage of 20 V, but its recommended operating input range is 2.9 V to 12 V for the 2.0 V fixed-output version. Exceeding 12 V may reduce output current capability to ≤1.0 A per datasheet Note 3, and sustained operation above 12 V requires careful thermal design due to increased power dissipation in the NCV1117DT20RKG.
Does the NCV1117DT20RKG require an external output capacitor, and what type is recommended?
Yes, the NCV1117DT20RKG requires a minimum 4.7 µF output capacitor with ESR between 33 mΩ and 2.2 Ω for stability. Ceramic, tantalum, or aluminum electrolytic types are acceptable if they meet these specifications across the full −40°C to +125°C operating range. The NCV1117DT20RKG remains stable with low-ESR ceramic capacitors, simplifying layout and reducing board space.
Is the NCV1117DT20RKG pin-compatible with older regulators like the LM317?
No-the NCV1117DT20RKG is not pin-compatible with the LM317. While the NCP1117 family (commercial variant) is pin-compatible with the LM317, the NCV1117DT20RKG uses a DPAK-3 package with Pin 1 = Ground, Pin 2 = Output, Pin 3 = Input, whereas the LM317 uses TO-220 or SOT-223 with Pin 1 = Adjust, Pin 2 = Output, Pin 3 = Input. This difference means direct replacement requires PCB redesign.
What thermal performance can be expected from the NCV1117DT20RKG in a typical DPAK layout?
In a standard 2.0 oz copper PCB with a 25 mm² copper pad connected to the exposed tab (Pin 2), the NCV1117DT20RKG achieves a typical junction-to-ambient thermal resistance (RJA) of 67°C/W. At 50°C ambient and 1.0 A load with 5 V input, power dissipation is ~3 W, resulting in ~201°C estimated junction temperature-exceeding safe limits. Thus, the NCV1117DT20RKG requires ≥500 mm² copper pour or external heatsinking to maintain TJ < 150°C under full load.
How does the NCV1117DT20RKG handle short-circuit conditions?
The NCV1117DT20RKG employs foldback current limiting: under short-circuit, output current drops to ~200–300 mA (vs. normal 1.0 A), reducing power dissipation and enabling safe operation until fault clears. Combined with thermal shutdown at ~175°C, this dual-protection scheme prevents damage during sustained shorts. Recovery is automatic once temperature falls below hysteresis threshold-no reset required for the NCV1117DT20RKG.
NCV1117DT20RKG 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):
- 2V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.2V @ 800mA
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 10 mA
- Current - Supply (Max):
- -
- PSRR:
- 70dB (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
NCV1117DT20RKG FAQ
1.How can I place an order for NCV1117DT20RKG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV1117DT20RKG 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 NCV1117DT20RKG reliable?
The price and inventory of NCV1117DT20RKG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV1117DT20RKG is usually 5 days.
3.What payment methods are accepted for NCV1117DT20RKG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV1117DT20RKG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV1117DT20RKG?
NCV1117DT20RKG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV1117DT20RKG 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 NCV1117DT20RKG?
For technical support, including NCV1117DT20RKG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV1117DT20RKG requirements.
6.How does Aetrix verify that NCV1117DT20RKG is sourced from the original manufacturer or authorized distributors?
All NCV1117DT20RKG 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 NCV1117DT20RKG meets industry standards.
7.What is the process for return or replacement of NCV1117DT20RKG?
All NCV1117DT20RKG units undergo pre-shipment inspection (PSI). If there is an issue with NCV1117DT20RKG, 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 NCV1117DT20RKG part is unused and in its original packaging.
Return procedure for NCV1117DT20RKG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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