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onsemi MC7808ABD2TG
- Part No.:
- MC7808ABD2TG
- Manufacturer:
- onsemi
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
MC7808ABD2TG.pdf
- Description:
- IC REG LINEAR 8V 1A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:1,760
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Product details
Overview
MC7808ABD2TG from onsemi is a fixed-output +8.0 V, 1.0 A linear voltage regulator in D2PAK-3 (TO-263) package, featuring internal thermal shutdown, short-circuit current limiting, safe-area compensation, and ±2% output voltage tolerance at 25°C. It delivers stable local regulation for industrial control modules, automotive body electronics, and embedded power supplies where input ripple rejection and robust fault protection are required.
For engineers reviewing the MC7808ABD2TG datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage (2.0 V @ 1.0 A), ripple rejection (56–62 dB @ 120 Hz), quiescent current (3.3–6.0 mA), thermal resistance (RθJC = 5.0 °C/W), and compatibility with standard heatsink mounting via Pin 2 (GND/Heatsink).
Technical Context
The MC7808ABD2TG implements a monolithic series pass transistor architecture with built-in current-limiting circuitry that reduces short-circuit current as pass-device voltage increases. Its safe-area compensation ensures reliable operation under high-VIN–VOUT differentials without external foldback components.
Thermal overload protection activates at +150°C junction temperature, forcing shutdown until cooldown; recovery is automatic. The device operates across –40°C to +125°C ambient (TA) with full specification compliance over 5.0 mA to 1.0 A load range and input voltages from 10.6 V to 25 V DC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +8.0 V nominal, ±2% tolerance (7.84–8.16 V @ 25°C), stable over 5.0 mA–1.0 A load |
| Output Current | 1.0 A continuous (2.2 A peak), internally limited to protect against sustained overload |
| Dropout Voltage | 2.0 V @ 1.0 A and 25°C - defines minimum input headroom needed for regulation |
| Ripple Rejection | 56–62 dB @ 120 Hz - suppresses AC line noise on input supply before it reaches load |
| Quiescent Current | 3.3–6.0 mA - low bias draw enables efficient standby operation in battery-backed systems |
| Thermal Resistance | RθJC = 5.0 °C/W - enables high-power dissipation with minimal junction-to-case delta when heatsinked |
| Operating Temperature | –40°C to +125°C junction - qualified for automotive and industrial environments per AEC-Q100 |
Pinout & Package
D2PAK-3 (TO-263) surface-mount package with exposed metal tab thermally and electrically connected to Pin 2 (Ground). Requires PCB copper pour under tab for effective heatsinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Input (VIN) | Unregulated DC input supply; must exceed VOUT by ≥2.0 V for regulation |
| Pin 2 | Ground / Heatsink | Common reference and thermal path; connects directly to PCB ground plane and heatsink surface |
| Pin 3 | Output (VOUT) | Stable +8.0 V regulated output; bypass capacitor (≥0.33 µF) recommended at point-of-load |
Key Features
| Feature | Design Value |
|---|---|
| Internal Short-Circuit Protection | Limits output current to ~0.2 A during hard shorts, preventing device destruction |
| Thermal Shutdown | Automatic cutoff at +150°C junction temperature; self-recovery after cooling |
| Safe-Area Compensation | Reduces short-circuit current as VIN–VOUT rises - maintains SOA integrity under high-dissipation conditions |
| No External Components Required | Operates stably with only input/output capacitors - simplifies BOM and layout for cost-sensitive designs |
| AEC-Q100 Qualified | Validated for automotive applications including body control modules and infotainment power rails |
Applications
| Industrial PLC I/O Module | Automotive Body Control Unit |
|---|---|
Use Scenario: Powering isolated analog sensor interfaces and digital I/O drivers in programmable logic controllers. IC Role / Device Role / Timing Role: Local +8 V rail generator for op-amps, ADC references, and level-shifted communication ICs. Use Value: ±2% output accuracy and 62 dB ripple rejection ensure stable analog performance despite noisy 24 VDC field bus inputs. | Use Scenario: Supplying microcontroller peripherals and LED drivers in door module ECUs. IC Role / Device Role / Timing Role: Primary 8 V regulator for CAN transceivers, window motor drivers, and interior lighting logic. Use Value: AEC-Q100 qualification and thermal shutdown enable reliable operation in under-hood temperature cycling (–40°C to +105°C ambient). |
| Embedded Network Gateway | Medical Diagnostic Equipment |
Use Scenario: Providing clean auxiliary power to Ethernet PHYs and USB hub controllers in edge gateways. IC Role / Device Role / Timing Role: Secondary regulated rail decoupled from main 12 V supply to reduce EMI coupling into sensitive data paths. Use Value: Low 10 µV/VOUT output noise and 0.9 mΩ output impedance minimize jitter on clock distribution networks. | Use Scenario: Powering precision front-end amplifiers and display backlight drivers in portable diagnostic devices. IC Role / Device Role / Timing Role: Low-noise, thermally robust 8 V source for analog signal conditioning stages requiring <100 ppm/°C drift. Use Value: –0.4 mV/°C average temperature coefficient and 1.0 A capability support long-duration battery-operated measurements. |
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 |
|---|---|---|---|
| LM7808CD2T | ±2% tolerance, same D2PAK-3 package, but higher quiescent current (4.5–8.0 mA) and lower ripple rejection (45–50 dB) | Not AEC-Q100 qualified; rated only to +125°C junction, not automotive ambient | Select when cost is primary constraint and automotive qualification is unnecessary |
| NCV7808BD2TR4G | Identical electrical specs and AEC-Q100 Grade 1 rating, but with enhanced ESD protection (HBM 2000 V vs. 1500 V) | Same automotive use cases; preferred for new designs requiring extended reliability validation | Select for next-generation automotive modules requiring highest immunity to assembly ESD events |
Compared with LM7808CD2T, MC7808ABD2TG offers superior ripple rejection and automotive qualification; compared with NCV7808BD2TR4G, it provides identical core regulation performance at lower cost, with slightly reduced ESD margin acceptable for most production environments.
Availability
MC7808ABD2TG is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, and embedded network gateways requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MC7808ABD2TG 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 delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The MC7800 series was designed specifically for rugged, fixed-output local regulation in harsh environments - emphasizing thermal resilience, fault tolerance, and drop-in compatibility across voltage variants (5 V to 24 V).
FAQ
What is the maximum input voltage for MC7808ABD2TG?
The absolute maximum input voltage for MC7808ABD2TG is 35 V DC, as specified in the Absolute Maximum Ratings table. However, for reliable continuous operation with 1.0 A output, the recommended input range is 10.6 V to 25 V DC - ensuring adequate headroom while maintaining thermal safety within the 15 W power dissipation limit.
Does MC7808ABD2TG require an input capacitor?
Yes, MC7808ABD2TG requires a minimum 0.33 µF input bypass capacitor (tantalum, ceramic, or mylar) placed directly across Pins 1 and 2. This capacitor stabilizes the regulator under dynamic load changes and suppresses high-frequency noise from upstream sources - omission risks oscillation or poor transient response, especially with long input traces.
Can MC7808ABD2TG be used in adjustable configurations?
Yes, MC7808ABD2TG can be configured as an adjustable regulator using external resistors and a Zener diode per Figure 10 in the datasheet. However, its internal feedback network is optimized for fixed 8 V operation; adjustable use sacrifices accuracy, line/load regulation, and thermal stability - reserved for legacy design reuse, not new implementations.
What is the thermal resistance of MC7808ABD2TG in D2PAK-3 package?
The junction-to-case thermal resistance (RθJC) of MC7808ABD2TG in D2PAK-3 package is 5.0 °C/W, measured from die to the exposed metal tab (Pin 2). Effective heatsinking requires low-thermal-resistance connection between this tab and a large PCB copper area or external heatsink - RθJA varies significantly with board layout (65–92 °C/W typical).
Is MC7808ABD2TG pin-compatible with other MC7800-series regulators?
Yes, MC7808ABD2TG shares identical D2PAK-3 pinout (Pin 1: IN, Pin 2: GND/Heatsink, Pin 3: OUT) with all MC78xxABD2TG variants (e.g., MC7805ABD2TG, MC7812ABD2TG). This enables direct voltage-swap replacements in existing layouts - provided input voltage and thermal design accommodate the new VOUT and associated power dissipation.
MC7808ABD2TG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 35V
- Voltage - Output (Min/Fixed):
- 8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 2V @ 1A (Typ)
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 6 mA
- Current - Supply (Max):
- -
- PSRR:
- 62dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK-3
MC7808ABD2TG FAQ
1.How can I place an order for MC7808ABD2TG through Aetrix?
Please submit a Request for Quotation (RFQ) for MC7808ABD2TG 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 MC7808ABD2TG reliable?
The price and inventory of MC7808ABD2TG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC7808ABD2TG is usually 5 days.
3.What payment methods are accepted for MC7808ABD2TG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC7808ABD2TG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC7808ABD2TG?
MC7808ABD2TG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC7808ABD2TG 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 MC7808ABD2TG?
For technical support, including MC7808ABD2TG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC7808ABD2TG requirements.
6.How does Aetrix verify that MC7808ABD2TG is sourced from the original manufacturer or authorized distributors?
All MC7808ABD2TG 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 MC7808ABD2TG meets industry standards.
7.What is the process for return or replacement of MC7808ABD2TG?
All MC7808ABD2TG units undergo pre-shipment inspection (PSI). If there is an issue with MC7808ABD2TG, 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 MC7808ABD2TG part is unused and in its original packaging.
Return procedure for MC7808ABD2TG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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