My Inquiry
My Account
onsemi NCP1117DT15RKG
- Part No.:
- NCP1117DT15RKG
- Manufacturer:
- onsemi
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
NCP1117DT15RKG.pdf
- Description:
- IC REG LINEAR 1.5V 1A DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:2,094
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
NCP1117DT15RKG from onsemi is a 1.5 V fixed-output, low-dropout linear voltage regulator in DPAK package, delivering up to 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 point-of-load regulation in industrial power supplies and hard drive controllers.
For engineers reviewing the NCP1117DT15RKG datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at full load, thermal performance in DPAK layout, output voltage tolerance across temperature, and compatibility with 10 µF ceramic output capacitance for stability.
Technical Context
The NCP1117DT15RKG implements a PNP-based LDO architecture with internal reference trimming and feedback loop compensation optimized for fixed 1.5 V output. It operates with input voltages from 2.9 V to 11.5 V and requires no minimum load for regulation.
Its protection circuitry includes foldback current limiting, junction temperature monitoring (trip at ~175°C), and safe operating area (SOA) compensation - enabling robust operation under transient overload and thermal stress without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.500 V ±1.0% (25°C); maintains regulation from 0 mA to 800 mA load with Vin ≥ 2.9 V |
| Max Dropout Voltage | 1.20 V at 800 mA over temperature - enables operation with only 2.7 V input at full load |
| Output Current | 1.0 A continuous (limited to 1.0 A when Vin > 12 V per datasheet Note 3) |
| Line Regulation | 0.5 mV (typical) over Vin = 2.9 V to 11.5 V - ensures stable output despite input rail variation |
| Load Regulation | 3.0 mV (typical) over 0–800 mA - minimizes output shift during dynamic load changes |
| Ripple Rejection | 66 dB at 120 Hz (Vin−Vout = 6.4 V, Iout = 500 mA) - suppresses switching supply noise in post-regulation |
| Quiescent Current | 3.6 mA (typical at Vin = 11.5 V) - low bias current supports efficiency in always-on systems |
Pinout & Package
DPAK (Case 369C) surface-mount package with exposed metal tab thermally connected to Pin 2 (Output). Designed for PCB copper pour heatsinking; RJA = 67°C/W (min pad), RJC = 6.0°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Ground / Adjust | Reference node for internal error amplifier; must be connected directly to system ground plane for regulation accuracy |
| 2 | Output | Regulated 1.5 V supply; electrically and thermally tied to exposed metal tab - requires direct copper connection for thermal management |
| 3 | Input | Unregulated DC input (2.9–11.5 V); bypass capacitor (≥10 µF ceramic) required adjacent to this pin for stability |
Key Features
| Feature | Design Value |
|---|---|
| No minimum load requirement | Maintains 1.5 V regulation down to 0 mA - eliminates need for dummy load resistors in standby modes |
| ±1.0% output voltage accuracy | Guaranteed over temperature and line/load - reduces need for post-assembly calibration in precision analog subsystems |
| Thermal shutdown with auto-recovery | Protects against sustained overtemperature (e.g., insufficient heatsinking) without latch-up - enables self-reset after cooling |
| Stable with 10 µF ceramic output capacitor | Eliminates reliance on higher-ESR tantalum or electrolytic caps - improves reliability and reduces board space |
| Pb-free, RoHS-compliant DPAK | Meets industrial environmental compliance requirements without derating; compatible with standard reflow profiles |
Applications
| Consumer Point-of-Regulation | Hard Drive Controller Power |
|---|---|
Use Scenario: Local 1.5 V supply for DDR memory termination or FPGA core logic in set-top boxes and streaming devices. IC Role / Device Role / Timing Role: Fixed-output LDO providing clean, low-noise 1.5 V rail with fast transient response to memory access bursts. Use Value: Enables stable interface timing by holding output deviation within ±3 mV during 0–800 mA load steps - critical for signal integrity. | Use Scenario: Primary 1.5 V supply for servo control ICs and spindle motor drivers in 2.5″ HDDs. IC Role / Device Role / Timing Role: Main regulator delivering regulated 1.5 V to motor driver gate drivers and position-sensing ADCs. Use Value: Sustains regulation during high-current motor startup transients (up to 1.0 A) without dropout or thermal shutdown. |
| Industrial PLC I/O Module | Switching Supply Post-Regulation |
Use Scenario: Local 1.5 V rail for isolated CAN transceiver logic and microcontroller peripherals in factory automation modules. IC Role / Device Role / Timing Role: Secondary regulator cleaning noisy 3.3 V intermediate rail derived from buck converter. Use Value: 66 dB ripple rejection at 120 Hz suppresses switching artifacts - prevents CAN bit errors caused by supply noise. | Use Scenario: Final-stage regulation after 5 V buck converter in telecom power architecture. IC Role / Device Role / Timing Role: Low-noise, high-PSRR post-regulator supplying sensitive RF front-end bias circuits. Use Value: RMS output noise of 0.003% VOUT (10 Hz–10 kHz) ensures minimal phase noise contribution to local oscillator paths. |
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 |
|---|---|---|---|
| TLV1117-15CDR | 1.5 V fixed, 800 mA max output, 1.2 V dropout at 800 mA, SO-8 package (not DPAK), RJA = 120°C/W (no thermal tab) | Limited to lower power density; unsuitable for >500 mA continuous in compact layouts without forced air | Select if board space allows SO-8 and thermal budget permits higher junction rise |
| LD1117S15TR | 1.5 V fixed, 800 mA max, 1.1 V dropout at 800 mA, SOT-223 package, ±2% initial accuracy | Lower accuracy and no automotive qualification; lacks AEC-Q100 support for automotive variants | Choose for cost-sensitive consumer designs where ±2% tolerance is acceptable and DPAK thermal advantage is not required |
Compared with TLV1117-15CDR and LD1117S15TR, the NCP1117DT15RKG delivers higher current (1.0 A vs. 800 mA), tighter voltage accuracy (±1.0% vs. ±2%), and superior thermal performance via DPAK's low-RJC (6.0°C/W), making it optimal for high-density industrial and storage applications demanding sustained full-load operation.
Availability
NCP1117DT15RKG is available at Aetrix Electronics and suitable for industrial PLCs, hard drive controllers, and consumer electronics point-of-regulation requiring stable component supply, long-term lifecycle support, and Pb-free compliance.
Supply support for NCP1117DT15RKG 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 management, analog, sensor, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.
The NCP1117 series was designed for high-reliability, low-dropout point-of-load regulation in space-constrained industrial and computing systems - emphasizing thermal robustness, ±1.0% accuracy, and seamless replacement of legacy LM317-based designs.
FAQ
What is the maximum input voltage rating for the NCP1117DT15RKG?
The NCP1117DT15RKG supports a maximum input voltage of 20 V, but operational input range for guaranteed 1.5 V regulation is 2.9 V to 11.5 V. Exceeding 11.5 V risks violating dropout margin and may trigger thermal shutdown under full load - design must ensure Vin ≤ 11.5 V during normal operation per datasheet Section "Electrical Characteristics".
Does the NCP1117DT15RKG require an external capacitor on the adjust pin?
No - the NCP1117DT15RKG is a fixed-output variant; its internal feedback network eliminates the need for external adjust-pin capacitors. Only the output capacitor (≥10 µF ceramic) and optional input bypass capacitor are required for stable operation, as confirmed in Figure 23 and Applications Information section of the datasheet.
Can the NCP1117DT15RKG be used without a heatsink in a 1.0 A continuous application?
Yes - the DPAK package's exposed metal tab (connected to Pin 2) enables effective PCB copper heatsinking. With ≥1 in² (6.5 cm²) of 2 oz. copper on the output layer, the NCP1117DT15RKG sustains 1.0 A at TA = 50°C without external heatsink, as shown in Figure 22. Smaller pads require derating per thermal resistance curves.
Is the NCP1117DT15RKG pin-compatible with the LM317?
No - while the NCP1117 series is functionally compatible with LM317-based circuits, the NCP1117DT15RKG has a different pinout: Pin 1 = Ground (LM317 Pin 1 = Adjust), Pin 2 = Output (LM317 Pin 2 = Output), Pin 3 = Input (LM317 Pin 3 = Input). Direct substitution requires PCB layout revision.
What is the typical output voltage drift over temperature for the NCP1117DT15RKG?
The NCP1117DT15RKG exhibits ±0.5% temperature stability over −40°C to +125°C ambient (NCP1117I grade), confirmed in the "Temperature Stability" parameter (ST = 0.5%) in Electrical Characteristics Table. This corresponds to ±7.5 mV drift over full range for the 1.5 V nominal output.
NCP1117DT15RKG 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:
- 0°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
NCP1117DT15RKG FAQ
1.How can I place an order for NCP1117DT15RKG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP1117DT15RKG 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 NCP1117DT15RKG reliable?
The price and inventory of NCP1117DT15RKG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP1117DT15RKG is usually 5 days.
3.What payment methods are accepted for NCP1117DT15RKG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP1117DT15RKG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP1117DT15RKG?
NCP1117DT15RKG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP1117DT15RKG 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 NCP1117DT15RKG?
For technical support, including NCP1117DT15RKG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP1117DT15RKG requirements.
6.How does Aetrix verify that NCP1117DT15RKG is sourced from the original manufacturer or authorized distributors?
All NCP1117DT15RKG 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 NCP1117DT15RKG meets industry standards.
7.What is the process for return or replacement of NCP1117DT15RKG?
All NCP1117DT15RKG units undergo pre-shipment inspection (PSI). If there is an issue with NCP1117DT15RKG, 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 NCP1117DT15RKG part is unused and in its original packaging.
Return procedure for NCP1117DT15RKG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NCP1117DT15RKG Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
