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onsemi NCV7805BTG
- Part No.:
- NCV7805BTG
- Manufacturer:
- onsemi
- Package:
- TO-220-3
- Datasheet:
-
NCV7805BTG.pdf
- Description:
- IC REG LINEAR 5V 1A TO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,216
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Product details
Overview
NCV7805BTG from onsemi is an automotive-grade, fixed-output +5.0 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 input voltages from 7.5 V to 35 V DC and maintains ±2% output voltage tolerance over temperature and load - widely deployed in engine control units (ECUs), body control modules (BCMs), and automotive sensor power supplies.
For engineers reviewing the NCV7805BTG datasheet, pinout, applications, or equivalent options, key selection criteria include its AEC-Q100 qualification, dropout voltage of 2.0 V at 1.0 A, 68 dB ripple rejection at 120 Hz, −0.3 mV/°C temperature coefficient, and TO-220 package with heatsink-connected ground terminal.
Technical Context
The NCV7805BTG implements a monolithic bipolar pass transistor architecture with integrated 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 under fault conditions. Safe-area compensation dynamically reduces short-circuit current as VIN−VOUT increases, preventing secondary breakdown.
Its quiescent current remains stable at 3.2–6.5 mA across 8.0–25 V input range and 5 mA–1.0 A load, enabling predictable power budgeting in always-on automotive subsystems. Output noise is specified at 10 µV/VOUT (10 Hz–100 kHz), supporting analog sensor interfaces without external filtering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±2% (4.9–5.1 V at 25°C; 4.75–5.25 V over full load and temperature range) |
| Max Output Current | 1.0 A continuous (with adequate heatsinking); peak 2.2 A for short durations |
| Input Voltage Range | 7.5 V to 35 V DC - supports wide automotive battery transients including load dump |
| Dropout Voltage | 2.0 V at 1.0 A and 25°C - defines minimum headroom needed for regulation |
| Ripple Rejection | 68 dB at 120 Hz - suppresses alternator ripple without external LC filtering |
| Thermal Shutdown | Activates at +150°C junction temperature - protects against sustained overload or poor heatsinking |
| AEC-Q100 Grade | Grade 1 (−40°C to +125°C ambient) - qualified for powertrain and chassis applications |
Pinout & Package
NCV7805BTG uses the TO-220-3 (Case 221AB) package with metal tab electrically connected to Pin 2 (Ground). The heatsink surface must be isolated from other potentials unless intentionally tied to system ground.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Input | Unregulated DC input (7.5–35 V); requires 0.33 µF bypass capacitor if >10 cm from bulk filter |
| Pin 2 | Ground | Common reference for input and output; metal tab is internally connected - must be grounded for thermal and EMI performance |
| Pin 3 | Output | Regulated +5.0 V supply; output capacitance not required for stability but improves transient response |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 compliant - validated for operation from −40°C to +125°C ambient |
| Internal protection | Thermal shutdown + short-circuit current limit + safe-area compensation - eliminates need for external fault management circuitry |
| Low output drift | −0.3 mV/°C average temperature coefficient - ensures stable 5 V reference across engine bay temperature swings |
| No external components | Operates stably without output capacitor; input bypass only required for long trace lengths or high-frequency noise |
| Pb-free construction | RoHS-compliant packaging - meets automotive environmental compliance requirements |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers microcontroller core logic, CAN transceivers, and analog front-end sensors in gasoline/diesel engine management systems. IC Role / Device Role / Timing Role: Primary 5 V rail regulator supplying critical safety-relevant subsystems. Use Value: AEC-Q100 qualification and thermal robustness ensure uninterrupted operation during extended high-temperature soak tests and cold-crank transients. |
Use Scenario: Supplies door module MCUs, window lift drivers, and interior lighting controllers in centralized vehicle body networks. IC Role / Device Role / Timing Role: Local point-of-load regulator converting 12 V battery to stable 5 V for digital logic and communication ICs. Use Value: 68 dB ripple rejection maintains clean power during alternator switching events, preventing CAN bus errors or MCU resets. |
| Advanced Driver Assistance Systems (ADAS) Camera Power | Automotive HVAC Control Panel |
Use Scenario: Provides regulated 5 V to image signal processors (ISPs) and serializer ICs in rear-view and surround-view camera modules. 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/VOUT output noise (10 Hz–100 kHz) avoids corruption of high-dynamic-range image data paths. |
Use Scenario: Delivers 5 V to touch controller ASICs, display drivers, and fan speed regulators in climate control head units. IC Role / Device Role / Timing Role: Fixed-output LDO replacing switching converters where EMI sensitivity prohibits inductive solutions. Use Value: Zero external components and no switching noise enable compact, low-EMI designs meeting CISPR 25 Class 5 limits. |
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 |
|---|---|---|---|
| MC7805CD2TR4G | Industrial-grade (non-AEC-Q100), DPAK-3 package, same electrical specs but lower thermal resistance (RθJC = 5°C/W vs. TO-220's 5°C/W, but RθJA = 65°C/W vs. 92°C/W) | Suitable for non-automotive industrial controls where qualification is not required and PCB space is constrained | Select when footprint and thermal performance on PCB are prioritized over automotive qualification |
| TL780-05CKTTR | Texas Instruments part; ±2% tolerance, 1.0 A rating, but higher quiescent current (6–10 mA) and no AEC-Q100 qualification | Used in cost-sensitive consumer electronics and white goods where automotive reliability is unnecessary | Choose only for non-automotive designs requiring TI supply chain alignment or alternate logistics |
Compared with MC7805CD2TR4G and TL780-05CKTTR, the NCV7805BTG uniquely combines AEC-Q100 Grade 1 qualification, TO-220 mechanical robustness for high-vibration environments, and proven field reliability in safety-critical automotive ECUs - making it irreplaceable where functional safety and long-term validation matter.
Availability
NCV7805BTG is available at Aetrix Electronics and suitable for engine control units (ECUs), body control modules (BCMs), and advanced driver assistance systems (ADAS) requiring stable component supply across multi-year automotive production cycles.
Supply support for NCV7805BTG 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 NCV7800 series belongs to onsemi's automotive-qualified linear regulator product line, engineered specifically for harsh-environment power management in engine, chassis, and ADAS systems where reliability and qualification are mandatory.
FAQ
What is the maximum input voltage the NCV7805BTG can withstand?
The NCV7805BTG supports a maximum input voltage of 35 V DC, as defined in its Absolute Maximum Ratings table. This rating enables reliable operation during automotive load-dump transients (ISO 7637-2 Pulse 5a), where battery voltage can spike to 35 V for up to 400 ms. Exceeding this voltage risks permanent damage even with brief exposure.
Does the NCV7805BTG require an output capacitor for stability?
No, the NCV7805BTG is internally compensated and does not require an output capacitor to maintain stability. However, adding a 10–100 µF aluminum or tantalum capacitor at the output significantly improves transient response to step-load changes - especially important in microcontroller-based automotive modules that draw pulsed current.
How does the thermal shutdown behavior of the NCV7805BTG protect downstream circuits?
When the NCV7805BTG junction temperature reaches +150°C, its internal thermal shutdown circuit disables the pass transistor, dropping output voltage to near zero. This prevents thermal runaway and allows the device to cool. Once junction temperature falls below ~135°C (typical hysteresis), regulation automatically resumes - protecting both the NCV7805BTG and connected loads from overheating damage.
Can the NCV7805BTG be used in adjustable-voltage configurations?
Yes - though designed as a fixed 5 V regulator, the NCV7805BTG can be configured as an adjustable regulator using external resistors per Figure 10 in the datasheet. However, doing so voids AEC-Q100 qualification for the modified circuit, and output accuracy degrades due to reference pin current injection; it is recommended only for prototyping or non-automotive use cases.
What is the significance of the "T" and "G" suffixes in NCV7805BTG?
In NCV7805BTG, "T" denotes TO-220-3 package (Case 221AB), and "G" indicates Pb-free (RoHS-compliant) finish. The full part number confirms it is an automotive-grade, lead-free, through-hole packaged +5 V linear regulator - distinguishing it from industrial variants like MC7805CTG or non-Pb-free versions.
NCV7805BTG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 35V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 2V @ 1A (Typ)
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 8 mA
- Current - Supply (Max):
- -
- PSRR:
- 83dB (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
NCV7805BTG FAQ
1.How can I place an order for NCV7805BTG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV7805BTG 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 NCV7805BTG reliable?
The price and inventory of NCV7805BTG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV7805BTG is usually 5 days.
3.What payment methods are accepted for NCV7805BTG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV7805BTG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV7805BTG?
NCV7805BTG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV7805BTG 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 NCV7805BTG?
For technical support, including NCV7805BTG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV7805BTG requirements.
6.How does Aetrix verify that NCV7805BTG is sourced from the original manufacturer or authorized distributors?
All NCV7805BTG 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 NCV7805BTG meets industry standards.
7.What is the process for return or replacement of NCV7805BTG?
All NCV7805BTG units undergo pre-shipment inspection (PSI). If there is an issue with NCV7805BTG, 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 NCV7805BTG part is unused and in its original packaging.
Return procedure for NCV7805BTG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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