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onsemi NCV78M15BDTG
- Part No.:
- NCV78M15BDTG
- Manufacturer:
- onsemi
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
NCV78M15BDTG.pdf
- Description:
- IC REG LINEAR 15V 500MA DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:3,800
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Product details
Overview
NCV78M15BDTG from onsemi is an automotive-grade, 15 V fixed-output linear voltage regulator in DPAK-3 package, delivering up to 500 mA output current with ±3% output voltage accuracy (14.4–15.6 V at 25°C), 2.0 V dropout, and integrated thermal shutdown and short-circuit protection. It serves as a local, on-card power supply for engine control units, body electronics, and infotainment systems requiring AEC-Q100 compliance.
For engineers reviewing the NCV78M15BDTG datasheet, pinout, applications, or equivalent options, key selection criteria include its −40°C to +125°C operating junction temperature range, 35 V absolute maximum input voltage, ripple rejection of 54 dB (100 mA, 120 Hz), and Pb-free DPAK-3 footprint compatible with automated SMT assembly.
Technical Context
The NCV78M15BDTG implements a monolithic three-terminal series pass regulator architecture with internal safe-area compensation for the output transistor, enabling robust operation under transient overloads without external components. Its thermal overload protection activates at +150°C junction temperature, and short-circuit current limiting holds peak output current to 350 mA at 35 V input.
Designed for automotive environments, it features AEC-Q100 qualification (Grade 1), PPAP capability, and guaranteed performance across −40°C to +125°C ambient. Input regulation is specified at ≤10 mV over 17.5–30 V input range, while load regulation remains ≤25 mV from 5 mA to 500 mA output current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 15 V nominal; 14.4–15.6 V over full temperature/load range - ensures stable MCU core or sensor bias supply in harsh automotive conditions |
| Max Output Current | 500 mA continuous (with adequate PCB copper heatsinking) - supports mid-power ECUs without external boost transistors |
| Dropout Voltage | 2.0 V typical at 350 mA - enables operation from 17 V minimum input, compatible with 12 V battery systems under cold-crank (≥6.5 V) |
| Ripple Rejection | 54 dB at 120 Hz, 100 mA load - suppresses alternator ripple to maintain clean analog sensor reference rails |
| Quiescent Current | 3.2–6.0 mA typical - minimizes standby power draw in always-on vehicle modules |
| Thermal Shutdown | Activates at +150°C junction temperature - prevents permanent damage during sustained overload or poor heatsinking |
| Input Voltage Range | 17.5–30 V operating; 35 V absolute max - withstands load-dump transients per ISO 7637-2 Pulse 5a (≤35 V, 100 ms) |
Pinout & Package
DPAK-3 (Case 369C) surface-mount package with exposed thermal pad (Pin 2 connected to GND and heatsink surface). Pin 1 = Input, Pin 2 = Ground, Pin 3 = Output. Heatsink surface electrically tied to Pin 2 for optimal thermal transfer to PCB copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Input | Unregulated DC input (17.5–30 V); requires ≥0.33 µF low-ESR ceramic bypass capacitor placed adjacent to pin |
| Pin 2 | Ground / Thermal Pad | Reference node and primary thermal path; must be soldered to ≥25 mm² 2-oz copper pour for 500 mA operation |
| Pin 3 | Output | Regulated 15 V output; stable into 10 µF ceramic + bulk electrolytic; no external feedback required |
Key Features
| Feature | Design Value |
|---|---|
| No external components required | Self-contained regulation with internal compensation - eliminates BOM cost and layout complexity for point-of-load supplies |
| AEC-Q100 Grade 1 qualified | Validated for −40°C to +125°C operation - meets automotive reliability requirements without derating |
| Internal short-circuit current limit | 350 mA hard current limit - protects downstream circuitry during wiring faults or ESD-induced latch-up |
| Safe-area compensated pass transistor | Prevents second breakdown during high-VCE/IC transients - enables reliable operation under load dump or reverse-battery stress |
| Pb-free and RoHS compliant | DPAK-3 package with matte tin lead finish - compatible with lead-free reflow profiles and automotive environmental standards |
Applications
| Engine Control Unit (ECU) Power Supply | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Local 15 V rail generation for microcontroller I/O buffers, CAN transceivers, and analog front-ends in gasoline/diesel engine management systems. IC Role / Device Role / Timing Role: Primary linear regulator providing noise-immune, low-ripple 15 V supply independent of main 5 V domain. Use Value: 54 dB ripple rejection maintains CAN signal integrity; thermal shutdown prevents failure during prolonged idle with high under-hood temperatures. |
Use Scenario: Powering door lock actuators, window lift drivers, and interior lighting controllers in centralized BCM designs. IC Role / Device Role / Timing Role: Fixed-voltage source for logic-level interface circuits and small solenoid drivers requiring stable 15 V bias. Use Value: 500 mA output supports multiple parallel loads; −40°C start-up capability ensures winter reliability in global vehicle programs. |
| Infotainment System Audio Amplifier Bias | Advanced Driver Assistance Systems (ADAS) Sensor Hub |
Use Scenario: Generating clean 15 V bias for Class AB audio amplifier stages in head unit amplifiers. IC Role / Device Role / Timing Role: Low-noise linear regulator supplying analog audio signal chain, decoupled from noisy digital domains. Use Value: 90 µVRMS output noise (10 Hz–100 kHz) prevents audible hum; 2.0 V dropout allows operation during battery brownouts. |
Use Scenario: Powering radar MMIC bias, camera ISP cores, and inertial measurement unit (IMU) interfaces in ADAS domain controllers. IC Role / Device Role / Timing Role: Safety-relevant voltage source meeting ASIL-B functional safety constraints via AEC-Q100 qualification. Use Value: PPAP-capable manufacturing and traceable lot control ensure supply continuity for Tier-1 ADAS programs. |
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 |
|---|---|---|---|
| MC78M15BDTRKG | Same electrical specs but commercial temperature range (0°C to +125°C); no AEC-Q100 qualification | Not suitable for under-hood or safety-critical automotive use; limited to cabin or industrial applications | Select only for non-automotive designs where cost is prioritized over automotive qualification |
| LM2940CT-15/NOPB | Higher dropout (0.5 V typical at 100 mA vs. 2.0 V at 350 mA); lower max input (26 V); different pinout (TO-220) | Requires larger heatsink at 500 mA; not drop-in compatible due to package and pin assignment mismatch | Consider only if lower dropout is critical and PCB layout can accommodate TO-220 footprint and revised routing |
Compared with MC78M15BDTRKG and LM2940CT-15/NOPB, the NCV78M15BDTG uniquely combines automotive qualification, DPAK-3 SMT compatibility, and guaranteed 500 mA output across −40°C to +125°C - making it the sole choice for production automotive ECUs requiring AEC-Q100 compliance and space-constrained layouts.
Availability
NCV78M15BDTG is available at Aetrix Electronics and suitable for engine control units, body control modules, infotainment systems, and ADAS sensor hubs requiring stable component supply with automotive-grade traceability and long-term lifecycle support.
Supply support for NCV78M15BDTG 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, sensors, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.
The NCV78M15BDTG belongs to the NCV78Mxx automotive linear regulator product line, engineered specifically for under-hood and safety-critical vehicle subsystems demanding AEC-Q100 qualification, extended temperature operation, and robust transient immunity.
FAQ
What is the maximum input voltage rating for the NCV78M15BDTG?
The NCV78M15BDTG has an absolute maximum input voltage of 35 V DC, with recommended operating input range of 17.5 V to 30 V. This rating enables reliable operation during ISO 7637-2 load-dump transients (up to 35 V for 100 ms) common in 12 V automotive systems, provided appropriate input clamping or filtering is implemented upstream.
Does the NCV78M15BDTG require external capacitors for stability?
The NCV78M15BDTG is internally compensated and does not require external output capacitors for basic stability. However, a minimum 0.33 µF ceramic capacitor is recommended at the input pin to suppress high-frequency noise and ensure stable regulation under fast load transients. Larger bulk capacitance (e.g., 10–100 µF) may be added at the output for improved ripple suppression in sensitive analog circuits.
How is thermal performance managed in the NCV78M15BDTG DPAK-3 package?
Thermal performance relies on soldering the exposed thermal pad (Pin 2) to ≥25 mm² of 2-ounce copper on the PCB. With this layout, the device sustains 500 mA continuous output at +50°C ambient. Without adequate copper area, output current must be derated - e.g., to ~300 mA in free-air conditions. The internal thermal shutdown activates at +150°C junction temperature to prevent damage.
Is the NCV78M15BDTG pin-compatible with other regulators in the 78Mxx family?
Yes, the NCV78M15BDTG shares identical pinout (Pin 1 = Input, Pin 2 = GND/thermal pad, Pin 3 = Output) and DPAK-3 footprint with all MC78Mxx and NCV78Mxx variants in the same suffix (e.g., NCV78M05BDTG, MC78M12BDTRKG). This enables voltage-scaling flexibility within the same PCB design while maintaining mechanical and thermal layout compatibility.
What does the 'NCV' prefix signify for the NCV78M15BDTG?
The 'NCV' prefix indicates that the NCV78M15BDTG is manufactured under onsemi's automotive quality system, with AEC-Q100 qualification (Grade 1), PPAP documentation support, and enhanced process controls for zero-defect delivery. It guarantees operation from −40°C to +125°C junction temperature and includes lot-level traceability required by Tier-1 automotive suppliers.
NCV78M15BDTG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Bulk
- 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):
- -
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- 70dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
NCV78M15BDTG FAQ
1.How can I place an order for NCV78M15BDTG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV78M15BDTG 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 NCV78M15BDTG reliable?
The price and inventory of NCV78M15BDTG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV78M15BDTG is usually 5 days.
3.What payment methods are accepted for NCV78M15BDTG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV78M15BDTG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV78M15BDTG?
NCV78M15BDTG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV78M15BDTG 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 NCV78M15BDTG?
For technical support, including NCV78M15BDTG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV78M15BDTG requirements.
6.How does Aetrix verify that NCV78M15BDTG is sourced from the original manufacturer or authorized distributors?
All NCV78M15BDTG 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 NCV78M15BDTG meets industry standards.
7.What is the process for return or replacement of NCV78M15BDTG?
All NCV78M15BDTG units undergo pre-shipment inspection (PSI). If there is an issue with NCV78M15BDTG, 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 NCV78M15BDTG part is unused and in its original packaging.
Return procedure for NCV78M15BDTG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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