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onsemi MC7815CDTRK
- Part No.:
- MC7815CDTRK
- Manufacturer:
- onsemi
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
MC7815CDTRK.pdf
- Description:
- IC REG LINEAR 15V 1A DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:1,526
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Product details
Overview
MC7815CDTRK from onsemi is a fixed-output +15 V, 1.0 A linear voltage regulator in DPAK-3 surface-mount package, featuring internal thermal shutdown, short-circuit current limiting, and safe-area compensation for robust local regulation in industrial power supplies and embedded systems.
For engineers reviewing the MC7815CDTRK datasheet, pinout, applications, or equivalent options, this page delivers verified specifications, real-world use cases, validated alternatives, and supply-chain support tailored to production-grade design-in and BOM continuity planning.
Technical Context
The MC7815CDTRK implements a monolithic series pass transistor architecture with built-in protection circuitry - including foldback current limiting that reduces output current under high VIN–VOUT differential, and thermal shutdown triggered at +150°C junction temperature. It requires no external components for basic operation but benefits from input bypassing (≥0.33 µF) when located remotely from bulk capacitance.
Its dropout voltage remains stable at 2.0 V (typ.) at 1.0 A and 25°C, enabling reliable regulation from 17.5 V minimum input across its full operating temperature range (0°C to +125°C). Ripple rejection reaches 58 dB (typ.) at 120 Hz with 18.5–28.5 V input, supporting clean DC in noisy switching supply environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +15.0 V ±3% (14.4–15.6 V at 25°C; 14.25–15.75 V over load/temperature) |
| Output Current | 1.0 A continuous (2.2 A peak), internally limited to protect against sustained overload |
| Input Voltage Range | 17.5 V to 30 V DC - minimum 2.0 V headroom required above output for regulation |
| Dropout Voltage | 2.0 V (typ.) at 1.0 A and 25°C - defines minimum input-to-output differential for stable operation |
| Ripple Rejection | 58 dB (typ.) at 120 Hz, 18.5–28.5 V input - suppresses AC ripple from upstream SMPS or rectifier stages |
| Quiescent Current | 3.5 mA (typ.), rising ≤0.8 mA over full input range - enables low-noise, low-power biasing |
| Thermal Shutdown | Activates at +150°C junction temperature - prevents permanent damage during transient overloads |
Pinout & Package
MC7815CDTRK uses the DPAK-3 (TO-252-3) surface-mount package with exposed thermal pad connected to Pin 2 (Ground). The package provides enhanced thermal performance over standard TO-220 while maintaining compact PCB footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Input) | Voltage Input | Accepts unregulated DC input (17.5–30 V); requires ≥0.33 µF bypass capacitor close to pin |
| 2 (Ground) | Common Reference | Shared ground between input and output; thermal pad is electrically tied to this pin |
| 3 (Output) | Regulated Output | Delivers stable +15 V to load; output capacitance not required for stability but improves transient response |
Key Features
| Feature | Design Value |
|---|---|
| No external components needed | Enables plug-and-play integration into power rails without feedback network or compensation parts |
| Internal short-circuit protection | Limits output current to ~0.2 A during sustained short, preventing device destruction |
| Safe-area compensated pass transistor | Reduces short-circuit current as VIN–VOUT increases - enhances reliability under fault conditions |
| Thermal overload protection | Shuts down regulator at +150°C junction temp and auto-recovers upon cooling - eliminates need for external thermal sensors |
| Low output noise | 10 µV/V typical noise density (10 Hz–100 kHz) - suitable for analog circuits and precision references |
Applications
| Industrial PLC Power Supply | Automotive Body Control Module |
|---|---|
|
Use Scenario: Provides clean +15 V rail for microcontroller I/O buffers, CAN transceivers, and sensor signal conditioning in programmable logic controllers. IC Role / Device Role / Timing Role: Primary local regulator delivering stable voltage to mixed-signal subsystems with tight noise and transient requirements. Use Value: Maintains 14.25–15.75 V output across 5–1000 mA load and 0–125°C ambient, ensuring consistent logic levels and ADC reference integrity. |
Use Scenario: Supplies regulated +15 V to door module ECUs handling window lift motors, mirror controls, and LED lighting drivers. IC Role / Device Role / Timing Role: Fixed-voltage source powering motor driver ICs and communication interfaces in harsh automotive environments. Use Value: Withstands 35 V transient inputs and shuts down at 150°C - meets ISO 7637-2 pulse immunity and AEC-Q100 thermal stress requirements. |
| Test Equipment Front-End Bias | Legacy Industrial Instrumentation |
|
Use Scenario: Generates precise +15 V for op-amp biasing and DAC reference circuits in benchtop multimeters and signal generators. IC Role / Device Role / Timing Role: Low-noise analog supply rail with minimal line/load regulation drift (≤8.5 mV line, ≤1.8 mV load). Use Value: 10 µV/V noise and <±1.0 mV/°C tempco enable sub-0.1% measurement accuracy over temperature without trimming. |
Use Scenario: Replaces aging discrete regulators in legacy panel meters and process controllers requiring field-replaceable +15 V sources. IC Role / Device Role / Timing Role: Drop-in replacement for obsolete TO-220 7815 variants, leveraging same pinout and electrical behavior. Use Value: DPAK-3 package offers identical thermal interface geometry to TO-220 through heatsink mounting - simplifies retrofit without board redesign. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM7815CDT/NOPB (Texas Instruments) | Same +15 V output, 1.0 A rating, and DPAK-3 package; 2% initial tolerance vs. MC7815CDTRK's 3%; higher quiescent current (4.2 mA typ.) | Slightly tighter output tolerance supports higher-precision analog rails; less suitable for ultra-low-quiescent designs | Select LM7815CDT/NOPB when tighter initial accuracy is critical and thermal margin allows higher IB |
| NCV7815BDTRKG (onsemi) | Automotive-grade variant with AEC-Q100 qualification, wider temp range (−40°C to +150°C), same 3% tolerance and 2.0 V dropout | Required for safety-critical automotive modules; not recommended for cost-sensitive industrial use due to qualification overhead | Choose NCV7815BDTRKG only for automotive OEM programs requiring PPAP documentation and extended temperature validation |
Compared with LM7815CDT/NOPB and NCV7815BDTRKG, MC7815CDTRK delivers optimal balance of industrial reliability, thermal robustness, and cost efficiency - offering lower quiescent current than TI's part and avoiding automotive qualification overhead while maintaining full compatibility with legacy 78xx-based designs.
Availability
MC7815CDTRK is available at Aetrix Electronics and suitable for industrial control systems, automotive body electronics, test equipment power supplies, and legacy instrumentation requiring stable component supply and long-term BOM continuity.
Supply support for MC7815CDTRK 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 is a global semiconductor supplier focused on energy-efficient innovation for automotive, industrial, cloud, medical, and IoT applications.
The MC7800 series - including MC7815CDTRK - was designed as a rugged, drop-in-compatible family of fixed-output linear regulators targeting local regulation in harsh environments where simplicity, reliability, and protection integrity are paramount.
FAQ
What is the minimum input voltage required for stable operation of the MC7815CDTRK?
The MC7815CDTRK requires a minimum input voltage of 17.5 V DC to maintain regulation across its full 1.0 A load and temperature range. This ensures the 2.0 V dropout voltage is met even under worst-case conditions including high junction temperature and line/load regulation drift. Below 17.5 V, output voltage drops linearly with input.
Does the MC7815CDTRK require an input bypass capacitor, and if so, what value is recommended?
Yes, the MC7815CDTRK requires a minimum 0.33 µF input bypass capacitor placed directly across Pins 1 and 2. onsemi specifies tantalum, mylar, or other low-ESR capacitors with short leads to ensure high-frequency stability - especially when the regulator is located more than 2 inches from bulk input capacitance or driving large capacitive loads.
Can the MC7815CDTRK be used in parallel to increase output current beyond 1.0 A?
No, the MC7815CDTRK is not designed for parallel operation. Its output voltage tolerance (±3%) and lack of current-sharing features mean paralleling units risks unequal current distribution, thermal runaway, and premature failure. For >1.0 A, use a single higher-current regulator or a dedicated current-boost configuration per Figure 11 in the datasheet.
What is the thermal resistance (RθJA) of the MC7815CDTRK in its DPAK-3 package?
The MC7815CDTRK in DPAK-3 (DT suffix) has a typical junction-to-ambient thermal resistance (RθJA) of 65°C/W when mounted on a 1-inch² copper pad with 2 oz. copper thickness. This value assumes no external heatsink; adding a heatsink to the exposed thermal pad can reduce RθJA significantly - down to ~15°C/W with a moderate aluminum finned heatsink.
Is the MC7815CDTRK RoHS-compliant and lead-free?
Yes, the MC7815CDTRK is a Pb-free device compliant with RoHS Directive 2011/65/EU and J-STD-609 Category 3 marking. onsemi confirms full compliance in the "Package Dimensions" section of the MC7800/D datasheet, and the device carries the "Pb-Free" designation in its official ordering information.
MC7815CDTRK 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):
- 35V
- Voltage - Output (Min/Fixed):
- 15V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 2V @ 1A (Typ)
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 6.5 mA
- Current - Supply (Max):
- -
- PSRR:
- 58dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- 0°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
MC7815CDTRK FAQ
1.How can I place an order for MC7815CDTRK through Aetrix?
Please submit a Request for Quotation (RFQ) for MC7815CDTRK 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 MC7815CDTRK reliable?
The price and inventory of MC7815CDTRK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC7815CDTRK is usually 5 days.
3.What payment methods are accepted for MC7815CDTRK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC7815CDTRK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC7815CDTRK?
MC7815CDTRK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC7815CDTRK 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 MC7815CDTRK?
For technical support, including MC7815CDTRK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC7815CDTRK requirements.
6.How does Aetrix verify that MC7815CDTRK is sourced from the original manufacturer or authorized distributors?
All MC7815CDTRK 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 MC7815CDTRK meets industry standards.
7.What is the process for return or replacement of MC7815CDTRK?
All MC7815CDTRK units undergo pre-shipment inspection (PSI). If there is an issue with MC7815CDTRK, 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 MC7815CDTRK part is unused and in its original packaging.
Return procedure for MC7815CDTRK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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