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onsemi NCV7815BTG
- Part No.:
- NCV7815BTG
- Manufacturer:
- onsemi
- Package:
- TO-220-3
- Datasheet:
-
NCV7815BTG.pdf
- Description:
- IC REG LINEAR 15V 1A TO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,652
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Product details
Overview
NCV7815BTG from onsemi is an automotive-grade, fixed-output +15 V linear voltage regulator delivering up to 1.0 A output current with internal thermal shutdown, short-circuit current limiting, and safe-area compensation. It operates with a minimum input voltage of 17.9 V (2.0 V dropout at 1.0 A), supports junction temperatures up to +150°C, and is qualified to AEC-Q100 for under-hood automotive power rail regulation.
For engineers reviewing the NCV7815BTG datasheet, pinout, applications, or equivalent options, key selection criteria include its ±3% output voltage tolerance at TJ = 25°C (14.55–15.45 V), 2.0 V dropout at full load, 58 dB ripple rejection at 120 Hz, and TO-220 package with heatsink-connected ground pin - critical for thermal design in engine control units and body electronics.
Technical Context
The NCV7815BTG implements a monolithic series pass transistor architecture with built-in protection circuitry: thermal overload detection triggers shutdown before junction temperature exceeds +150°C, while short-circuit current limiting holds peak output current to 0.2 A during fault conditions. Safe-area compensation dynamically reduces short-circuit current as VIN–VOUT increases, preventing secondary breakdown.
It requires no external components for basic operation but benefits from a 0.33 µF input bypass capacitor when located >2 inches from bulk filtering. Output stability is independent of output capacitance, though ≥0.1 µF improves transient response. Quiescent current remains ≤3.5 mA across 17.5–30 V input range and full load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +15.0 V nominal, ±3% tolerance (14.55–15.45 V at TJ = 25°C) - ensures stable MCU core supply in automotive environments |
| Output Current | 1.0 A continuous, 2.2 A peak - sufficient for powering microcontrollers, sensors, and interface ICs in ECU modules |
| Dropout Voltage | 2.0 V at IO = 1.0 A, TJ = 25°C - mandates minimum 17.9 V input for regulated 15 V output under full load |
| Ripple Rejection | 58 dB at 120 Hz, VIN = 18.5–28.5 V - suppresses alternator ripple and switching noise in vehicle electrical systems |
| Thermal Shutdown | Activates at TJ ≥ +150°C - protects against sustained overloads without external thermal monitoring |
| Short-Circuit Limit | 0.2 A (typical) at VIN = 35 V - limits fault energy and enables self-recovery after overload removal |
| Quiescent Current | 3.5 mA (max) at IO = 1.0 A - minimizes standby power draw in always-on vehicle subsystems |
Pinout & Package
NCV7815BTG uses the TO-220 package (Case 221AB), with the metal tab (heatsink surface) internally connected to Pin 2 (Ground). This configuration requires mechanical isolation from chassis ground unless system common-ground topology permits direct mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Input | Unregulated DC input (17.9–30 V); must be decoupled with ≥0.33 µF capacitor near pin for high-frequency stability |
| Pin 2 | Ground | Common reference for input and output; metal tab is electrically tied to this pin - critical for thermal path and grounding strategy |
| Pin 3 | Output | Regulated +15 V output; capable of sourcing 1.0 A continuously with adequate heatsinking (RθJA = 92°C/W) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Qualified for automotive applications per Grade 1 (−40°C to +125°C ambient) with PPAP capability - meets OEM reliability requirements |
| No External Components Required | Operates stably without feedback network or compensation capacitors - simplifies PCB layout and reduces BOM count |
| Internal Safe-Area Compensation | Reduces short-circuit current as VIN–VOUT rises - prevents pass transistor second breakdown during high-differential faults |
| Pb-Free Construction | RoHS-compliant packaging with matte tin lead finish - supports modern automotive manufacturing and environmental compliance |
| Thermal Overload Protection | Automatic shutdown at TJ ≥ +150°C with hysteresis - eliminates need for discrete thermal sensors or shutdown logic |
Applications
| Engine Control Unit (ECU) Power Supply | Body Control Module (BCM) Sensor Rail |
|---|---|
|
Use Scenario: Regulating 15 V for microcontroller core logic, CAN transceivers, and analog front-ends in gasoline/diesel engine management systems. IC Role / Device Role / Timing Role: Primary local +15 V linear regulator supplying critical safety-related subsystems. Use Value: AEC-Q100 qualification and thermal shutdown ensure uninterrupted operation during extended high-temperature engine runtime. |
Use Scenario: Providing stable +15 V to door module sensors (window lift, mirror position), lighting drivers, and LIN transceivers. IC Role / Device Role / Timing Role: Local point-of-load regulator replacing centralized 15 V distribution to reduce wiring harness weight. Use Value: 58 dB ripple rejection maintains signal integrity in noisy body electronics environments with PWM loads. |
| Transmission Control Module (TCM) | Advanced Driver Assistance Systems (ADAS) Camera Power |
|
Use Scenario: Powering solenoid driver ICs, gear position sensors, and microcontrollers in automatic transmission control units. IC Role / Device Role / Timing Role: High-reliability +15 V source with robust short-circuit protection for actuator interface circuits. Use Value: 0.2 A short-circuit limit prevents damage during solenoid coil open-circuit or connector fault events. |
Use Scenario: Delivering clean +15 V to image sensor bias supplies and ISP power domains in rear-view or surround-view cameras. IC Role / Device Role / Timing Role: Low-noise local regulator minimizing power-supply-induced image artifacts (e.g., banding, noise floor elevation). Use Value: 10 µV/V output noise (10 Hz–100 kHz) preserves dynamic range and SNR in high-resolution CMOS image sensors. |
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 |
|---|---|---|---|
| MC7815CTG | Commercial-grade (0°C to +125°C TJ), non-AEC-Q100, same TO-220 package and electrical specs | Lacks automotive qualification; suitable only for industrial or consumer applications with lower reliability demands | Select MC7815CTG only if AEC-Q100 is not required and cost sensitivity outweighs long-term field reliability needs. |
| LM7815CD2T | TO-263 (D2PAK) package, same +15 V/1.0 A rating, but higher RθJA (65°C/W vs. 92°C/W) and no AEC-Q100 | Surface-mount alternative requiring different PCB footprint and thermal pad layout; not automotive-qualified | Choose LM7815CD2T only when SMT assembly is mandatory and thermal performance can be managed via copper area and airflow. |
Compared with MC7815CTG and LM7815CD2T, the NCV7815BTG uniquely combines automotive qualification, TO-220 through-hole compatibility, and guaranteed −40°C to +150°C junction operation - making it the sole option for production automotive ECUs requiring PPAP documentation and extended temperature margin.
Availability
NCV7815BTG is available at Aetrix Electronics and suitable for engine control units, body control modules, and transmission control systems requiring stable component supply with full automotive traceability and long-lifecycle support.
Supply support for NCV7815BTG 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 electronics, with leadership in automotive, industrial, cloud, and IoT markets.
The NCV7815BTG belongs to the NCV7800 automotive voltage regulator family, designed specifically for robust, low-cost local regulation in harsh-temperature vehicle subsystems where reliability and qualification compliance are mandatory.
FAQ
What is the maximum input voltage rating for the NCV7815BTG?
The NCV7815BTG has an absolute maximum input voltage of 35 V DC, as specified in the Maximum Ratings table. However, for reliable continuous operation with 1.0 A output, the recommended maximum input is 30 V to maintain safe power dissipation and thermal margin. Exceeding 30 V significantly increases junction temperature and may trigger thermal shutdown under full load.
Does the NCV7815BTG require an input bypass capacitor?
Yes - the NCV7815BTG requires a minimum 0.33 µF input bypass capacitor (tantalum, ceramic, or film) placed directly across Pins 1 and 2. This is essential when the regulator is located more than ~2 inches from the main power filter, as it suppresses high-frequency noise and prevents oscillation caused by trace inductance. The datasheet explicitly recommends this for stable operation under all load conditions.
Can the NCV7815BTG be used in adjustable-voltage configurations?
No - the NCV7815BTG is a fixed-output +15 V regulator with internal feedback resistors. While the broader MC7800 family can be adapted for adjustable outputs using external resistive networks (as shown in Figure 10 of the datasheet), the NCV7815BTG's internal topology is hardwired for 15 V and lacks the ADJ pin or external feedback capability required for such configurations.
What is the thermal resistance (RθJA) of the NCV7815BTG in its TO-220 package?
The NCV7815BTG in the TO-220 package (Case 221AB) has a typical junction-to-ambient thermal resistance (RθJA) of 92°C/W when mounted on a standard FR-4 PCB with 1-inch² copper pad and no heatsink. With a properly attached heatsink, RθJA drops significantly - the datasheet specifies RθJC = 5.0°C/W, enabling high-power operation when thermal design is optimized.
Is the NCV7815BTG pin-compatible with legacy MC7815 variants?
Yes - the NCV7815BTG shares identical pinout (Pin 1 = Input, Pin 2 = Ground, Pin 3 = Output), package outline (TO-220), and terminal assignment with MC7815CTG and MC7815CD2T. However, it is not a drop-in replacement in non-automotive designs due to tighter output tolerance (±3% vs. ±4% for MC7815C) and higher minimum operating temperature (−40°C vs. 0°C), which may affect startup behavior in cold environments.
NCV7815BTG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-220-3
- 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):
- 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220
NCV7815BTG FAQ
1.How can I place an order for NCV7815BTG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV7815BTG 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 NCV7815BTG reliable?
The price and inventory of NCV7815BTG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV7815BTG is usually 5 days.
3.What payment methods are accepted for NCV7815BTG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV7815BTG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV7815BTG?
NCV7815BTG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV7815BTG 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 NCV7815BTG?
For technical support, including NCV7815BTG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV7815BTG requirements.
6.How does Aetrix verify that NCV7815BTG is sourced from the original manufacturer or authorized distributors?
All NCV7815BTG 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 NCV7815BTG meets industry standards.
7.What is the process for return or replacement of NCV7815BTG?
All NCV7815BTG units undergo pre-shipment inspection (PSI). If there is an issue with NCV7815BTG, 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 NCV7815BTG part is unused and in its original packaging.
Return procedure for NCV7815BTG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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