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onsemi MC7815BDTRK
- Part No.:
- MC7815BDTRK
- Manufacturer:
- onsemi
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
MC7815BDTRK.pdf
- Description:
- IC REG LINEAR 15V 1A DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:4,629
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Product details
Overview
MC7815BDTRK 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 MC7815BDTRK datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, thermal performance data, real-world use cases, and validated alternative parts - all grounded in onsemi's official MC7800 series documentation (Rev. 29, Nov. 2021).
Technical Context
The MC7815BDTRK implements a monolithic NPN pass transistor architecture with built-in protection circuitry including foldback current limiting and junction temperature sensing that triggers thermal shutdown at +150°C. 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 (at IO = 1.0 A, TJ = 25°C), enabling reliable regulation from minimum input voltages of 17.5 VDC under full load. Ripple rejection reaches 58 dB at 120 Hz (Vin = 18.5–28.5 V, IO = 500 mA), supporting clean DC output 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 TJ = 25°C); tight tolerance enables direct replacement in 15 V rail designs without recalibration. |
| Output Current | 1.0 A continuous (2.2 A peak); sufficient for powering microcontrollers, sensors, and analog front-ends without external boost. |
| Dropout Voltage | 2.0 V at 1.0 A and 25°C; defines minimum headroom needed between input and output to maintain regulation. |
| Ripple Rejection | 58 dB at 120 Hz; suppresses low-frequency switching noise from upstream AC/DC or DC/DC converters. |
| Quiescent Current | 3.5–6.0 mA typical; low standby draw supports energy-sensitive applications where idle power matters. |
| Thermal Shutdown | Activates at TJ = +150°C; protects device during overload or inadequate heatsinking without external circuitry. |
| Short-Circuit Limit | 0.2 A typical (Vin = 35 V); limits fault current to prevent PCB trace damage during output shorts. |
Pinout & Package
DPAK-3 (DT suffix, Case 369C) surface-mount package with exposed thermal pad connected to Pin 2 (Ground). Compact footprint (6.7 mm × 6.2 mm × 1.7 mm) supports high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Input | Accepts unregulated DC input (17.5–30 V recommended); must be bypassed with ≥0.33 µF capacitor near pin for stability. |
| Pin 2 | Ground | Common reference for input and output; electrically tied to exposed thermal pad for enhanced heat dissipation. |
| Pin 3 | Output | Delivers regulated +15 V; output capacitance not required for stability but improves transient response (e.g., 0.1–1 µF ceramic). |
Key Features
| Feature | Design Value |
|---|---|
| No external components required | Enables plug-and-play integration into power rails without feedback resistors, compensation networks, or sense lines. |
| Internal thermal overload protection | Automatically disables output above +150°C junction temperature, eliminating need for discrete thermal monitoring circuits. |
| Internal short-circuit current limiting | Clamps output current to ~0.2 A during hard shorts, preventing catastrophic failure and reducing system-level fuse requirements. |
| Safe-area compensated pass transistor | Reduces short-circuit current as Vin–Vout increases, improving reliability under high-differential-voltage fault conditions. |
| 1.5% output voltage tolerance option | MC7815B grade ensures tighter initial accuracy than standard C-grade (±4%), easing compliance with strict analog supply specs. |
Applications
| Industrial PLC I/O Modules | Automotive Body Control Units |
|---|---|
|
Use Scenario: Powering isolated analog sensor interfaces and digital I/O drivers in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Primary +15 V local regulator supplying op-amps, ADC references, and optocoupler LEDs. Use Value: Stable 15 V output maintains signal integrity across wide temperature ranges (−40°C to +125°C ambient) and rejects ripple from shared 24 V DC bus. |
Use Scenario: Providing auxiliary 15 V rail for window lift control ICs, mirror actuators, and interior lighting drivers. IC Role / Device Role / Timing Role: Secondary regulated supply derived from vehicle battery (9–16 V), conditioned for sensitive motor driver logic. Use Value: Built-in short-circuit and thermal protection meets automotive functional safety expectations without added discrete protection. |
| Test & Measurement Equipment | Legacy Industrial Instrumentation |
|
Use Scenario: Biasing precision DACs, reference buffers, and analog multiplexers in benchtop multimeters and signal generators. IC Role / Device Role / Timing Role: Low-noise 15 V source for analog signal chains requiring <10 µV/√Hz noise floor. Use Value: 10 µV/V output noise (10 Hz–100 kHz) and 1.2 mΩ output impedance minimize distortion in high-resolution measurement paths. |
Use Scenario: Replacing aging 7815 regulators in legacy panel meters, process controllers, and analog chart recorders. IC Role / Device Role / Timing Role: Direct drop-in upgrade path for through-hole 7815 designs using adapter footprints or rework-compatible DPAK layout. Use Value: Identical electrical behavior and pinout compatibility with TO-220 versions simplifies obsolescence mitigation and BOM rationalization. |
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 (TI) | Same 15 V/1 A output, but wider output tolerance (±2% vs. MC7815BDTRK's ±3% max), higher quiescent current (4.5–8 mA), and lower ripple rejection (50 dB). | Preferred in cost-sensitive consumer applications where tighter initial accuracy is valued over thermal robustness. | Select LM7815CDT/NOPB only if design prioritizes initial voltage accuracy over thermal margin and long-term reliability under sustained overload. |
| NCV7815BDTRKG (onsemi) | Automotive-grade variant with AEC-Q100 qualification, extended temperature range (−40°C to +150°C), and PPAP capability - otherwise identical electrical specs. | Required for under-hood or safety-critical automotive subsystems where qualification and traceability are mandatory. | Choose NCV7815BDTRKG when automotive qualification, extended temp operation, or zero-defect manufacturing controls are contractually required. |
Compared with LM7815CDT/NOPB, MC7815BDTRK offers superior thermal protection margin and ripple suppression; versus NCV7815BDTRKG, it trades automotive qualification for lower unit cost and broader commercial availability - making it optimal for industrial and test equipment where AEC-Q100 is unnecessary.
Availability
MC7815BDTRK is available at Aetrix Electronics and suitable for industrial automation, test instrumentation, and embedded control systems requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for MC7815BDTRK 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, and IoT applications, with leadership in power management, analog, and sensor technologies.
The MC7800 series - including MC7815BDTRK - was designed for rugged, low-maintenance local regulation in harsh environments, emphasizing intrinsic protection, wide operating temperature support, and drop-in compatibility with legacy 78xx designs.
FAQ
What is the maximum input voltage rating for MC7815BDTRK?
The absolute maximum input voltage for MC7815BDTRK is 35 VDC, per onsemi's Maximum Ratings table. However, for reliable continuous operation at 1.0 A output, the recommended input range is 17.5 V to 30 VDC to maintain adequate thermal margin and avoid excessive power dissipation in the DPAK-3 package.
Does MC7815BDTRK require an input bypass capacitor?
Yes - MC7815BDTRK requires a minimum 0.33 µF input bypass capacitor (tantalum, ceramic, or film) placed as close as possible to Pins 1 and 2. This prevents oscillation and ensures stability, especially when the regulator is located more than a few centimeters from the main bulk capacitor or when feeding capacitive loads.
Can MC7815BDTRK be used in parallel for higher current?
No - MC7815BDTRK is not designed for parallel operation. Its output voltage tolerance (±3%) and lack of current-sharing features mean paralleling units risks uneven current distribution, thermal runaway, and premature failure. For >1.0 A, use a single higher-current regulator or a switching pre-regulator followed by MC7815BDTRK for low-noise post-regulation.
What is the thermal resistance (RθJA) of MC7815BDTRK in its DPAK-3 package?
The published junction-to-ambient thermal resistance (RθJA) for MC7815BDTRK in the DPAK-3 package is 65°C/W under standard JEDEC 2S2P board conditions. With proper copper pour and thermal vias under the exposed pad, actual RθJA can improve to ~40°C/W, enabling 1.0 A operation up to +70°C ambient without forced airflow.
Is MC7815BDTRK pin-compatible with TO-220 7815 regulators?
No - MC7815BDTRK uses a 3-pin DPAK-3 surface-mount footprint (Pin 1: Input, Pin 2: Ground, Pin 3: Output), while TO-220 7815 variants use a through-hole layout with reversed pin order (Pin 1: Output, Pin 2: Ground, Pin 3: Input). Direct replacement requires PCB redesign or adapter hardware.
MC7815BDTRK 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):
- 8 mA
- Current - Supply (Max):
- -
- PSRR:
- 58dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
MC7815BDTRK FAQ
1.How can I place an order for MC7815BDTRK through Aetrix?
Please submit a Request for Quotation (RFQ) for MC7815BDTRK 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 MC7815BDTRK reliable?
The price and inventory of MC7815BDTRK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC7815BDTRK is usually 5 days.
3.What payment methods are accepted for MC7815BDTRK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC7815BDTRK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC7815BDTRK?
MC7815BDTRK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC7815BDTRK 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 MC7815BDTRK?
For technical support, including MC7815BDTRK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC7815BDTRK requirements.
6.How does Aetrix verify that MC7815BDTRK is sourced from the original manufacturer or authorized distributors?
All MC7815BDTRK 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 MC7815BDTRK meets industry standards.
7.What is the process for return or replacement of MC7815BDTRK?
All MC7815BDTRK units undergo pre-shipment inspection (PSI). If there is an issue with MC7815BDTRK, 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 MC7815BDTRK part is unused and in its original packaging.
Return procedure for MC7815BDTRK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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