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onsemi MC7808ABD2TR4G
- Part No.:
- MC7808ABD2TR4G
- Manufacturer:
- onsemi
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
MC7808ABD2TR4G.pdf
- Description:
- IC REG LINEAR 8V 1A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:3,388
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Product details
Overview
MC7808ABD2TR4G 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 power supplies, automotive ECUs, and embedded control modules requiring robust overvoltage/overcurrent protection.
For engineers reviewing the MC7808ABD2TR4G 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), and junction temperature range (−40°C to +150°C).
Technical Context
This monolithic IC employs a bipolar pass transistor with integrated safe-area compensation to dynamically reduce short-circuit current as input-output differential increases. Its thermal overload protection activates at +150°C junction temperature, and internal current limiting holds peak output at 2.2 A under transient conditions.
The regulator operates with no external components required for basic functionality but benefits from 0.33 µF input and ≥0.1 µF output capacitors for improved transient response and stability-especially when located >10 cm from bulk filter capacitance or driving capacitive loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +8.0 V nominal, ±2% tolerance (7.84–8.16 V @ 25°C), stable across 5–1500 mA load |
| Max Output Current | 1.0 A continuous (2.2 A peak), limited by thermal design and heatsinking |
| Dropout Voltage | 2.0 V @ 1.0 A and 25°C - requires minimum 10.0 V input for regulated 8.0 V output |
| Ripple Rejection | 56–62 dB @ 120 Hz - suppresses AC line noise from unregulated DC sources |
| Quiescent Current | 3.3–6.0 mA - low bias draw enables efficient operation in standby modes |
| Thermal Shutdown | Activates at +150°C junction temperature - protects against sustained overload or poor heatsinking |
| Short-Circuit Limit | 0.2 A typical - prevents destructive current during output faults |
Pinout & Package
D2PAK-3 (TO-263) surface-mount package with exposed metal tab thermally and electrically connected to Pin 2 (Ground). Requires PCB copper area ≥4 cm² for 1.0 A operation without forced air.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Input | Unregulated DC input (10.6–23 V recommended); bypass capacitor must be placed adjacent |
| Pin 2 | Ground | Common reference for input and output; connects to heatsink tab - critical for thermal performance |
| Pin 3 | Output | Regulated +8.0 V supply; decoupling capacitor improves transient response |
Key Features
| Feature | Design Value |
|---|---|
| Fixed +8.0 V output | Eliminates external resistor network - reduces BOM count and layout complexity |
| Internal safe-area compensation | Prevents secondary breakdown of pass transistor during output shorts at high VIN–VOUT differentials |
| Thermal shutdown with auto-recovery | Halts operation above +150°C junction temperature and resumes once cooled - avoids latch-up failure |
| ±2% output tolerance (AB grade) | Meets tighter accuracy requirements than standard C-grade (±4%) for precision analog subsystems |
| Pb-free and RoHS-compliant | Complies with environmental regulations for industrial and automotive end equipment |
Applications
| Industrial PLC Power Rails | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Provides clean +8.0 V rail for microcontroller I/O buffers, CAN transceivers, and sensor signal conditioning in programmable logic controllers. IC Role / Device Role / Timing Role: Primary local regulator converting 12–24 V vehicle or factory bus to stable logic-level supply. Use Value: Internal short-circuit and thermal protection ensures uninterrupted operation during field wiring faults or ambient temperature spikes up to +85°C. | Use Scenario: Powers door lock actuators, window lift drivers, and interior lighting controllers in automotive BCMs. IC Role / Device Role / Timing Role: Secondary regulated supply derived from main 12 V battery rail, supporting mixed-signal ASICs and discrete FET gate drivers. Use Value: 2.2 A peak current capability handles inrush from solenoid loads; ±2% tolerance maintains ADC reference accuracy across temperature. |
| Embedded Motor Drive Logic | Test Equipment Power Subsystem |
Use Scenario: Supplies isolated logic circuitry (optocouplers, level shifters, gate drivers) in brushless DC motor inverters. IC Role / Device Role / Timing Role: Local regulation stage decoupled from noisy high-current power stages via ferrite bead and LC filtering. Use Value: 62 dB ripple rejection at 120 Hz suppresses switching noise coupling from adjacent PWM circuits into timing-sensitive control logic. | Use Scenario: Generates calibrated +8.0 V reference for precision DACs and analog front-ends in benchtop multimeters and signal generators. IC Role / Device Role / Timing Role: Low-noise, low-drift voltage source feeding metrology-grade analog signal paths. Use Value: −0.4 mV/°C temperature coefficient minimizes drift-induced measurement error over 0–50°C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-voltage linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM7808CD2T | Same +8 V output, but ±4% tolerance (C grade), higher quiescent current (4.5–8.0 mA), lower ripple rejection (45–50 dB) | Suitable for cost-sensitive non-precision applications where tighter regulation is not required | Select when budget constraints outweigh need for AB-grade accuracy and noise immunity |
| NCV7808ABD2TR4G | Identical electrical specs and pinout; AEC-Q100 qualified for automotive use, PPAP-capable | Required for automotive production programs needing automotive-grade qualification and traceability | Select for automotive OEM or Tier-1 designs requiring certified reliability and change control |
Compared with LM7808CD2T, MC7808ABD2TR4G offers tighter output tolerance and superior ripple rejection for noise-sensitive analog systems; compared with NCV7808ABD2TR4G, it lacks automotive qualification but provides identical performance at lower cost for industrial use.
Availability
MC7808ABD2TR4G is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, and test equipment requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for MC7808ABD2TR4G 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 (Nasdaq: ON) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The MC7800 series was designed as a family of rugged, drop-in fixed-voltage regulators targeting cost-effective, high-reliability local power conversion in harsh environments - especially where thermal robustness and fault tolerance are critical.
FAQ
What is the maximum input voltage rating for MC7808ABD2TR4G?
The absolute maximum input voltage for MC7808ABD2TR4G is 35 V DC, per the datasheet's Maximum Ratings table. However, for reliable continuous operation at 1.0 A output, the recommended input range is 10.6–23 V DC to maintain adequate headroom while limiting power dissipation and thermal stress. Exceeding 23 V significantly increases junction temperature and may trigger thermal shutdown under full load.
Does MC7808ABD2TR4G require external capacitors to operate stably?
MC7808ABD2TR4G does not require external capacitors for basic stability, as confirmed in the datasheet's "No External Components Required" feature. However, a 0.33 µF input capacitor is strongly recommended when the regulator is located more than ~10 cm from the bulk filter capacitor, and an output capacitor ≥0.1 µF improves transient response. Values less than 0.1 µF may cause instability under dynamic load conditions.
What is the thermal resistance junction-to-case (RθJC) for MC7808ABD2TR4G?
The thermal resistance junction-to-case (RθJC) for MC7808ABD2TR4G in the D2PAK-3 package is 5.0°C/W, as specified in the Maximum Ratings table on page 1 of the datasheet. This value assumes proper soldering of the exposed tab to a large copper pour - actual system-level RθJA depends heavily on PCB layout, copper area, and airflow.
Can MC7808ABD2TR4G be used in adjustable-voltage configurations?
Yes, MC7808ABD2TR4G can be used in adjustable-voltage configurations by adding external resistors and a Zener diode, as shown in Figure 10 of the datasheet. While optimized for fixed +8.0 V operation, its internal architecture supports external feedback - though accuracy, line/load regulation, and thermal performance will differ from the factory-trimmed fixed-output mode.
Is MC7808ABD2TR4G pin-compatible with other MC7800-series regulators?
Yes, MC7808ABD2TR4G shares identical pinout (Pin 1 = Input, Pin 2 = Ground, Pin 3 = Output) and package (D2PAK-3) with all other MC7800-series variants in the same suffix - including MC7805ABD2TR4G, MC7812ABD2TR4G, and MC7815ABD2TR4G - enabling board-level voltage rail flexibility without layout changes.
MC7808ABD2TR4G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- 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):
- 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
MC7808ABD2TR4G FAQ
1.How can I place an order for MC7808ABD2TR4G through Aetrix?
Please submit a Request for Quotation (RFQ) for MC7808ABD2TR4G 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 MC7808ABD2TR4G reliable?
The price and inventory of MC7808ABD2TR4G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC7808ABD2TR4G is usually 5 days.
3.What payment methods are accepted for MC7808ABD2TR4G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC7808ABD2TR4G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC7808ABD2TR4G?
MC7808ABD2TR4G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC7808ABD2TR4G 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 MC7808ABD2TR4G?
For technical support, including MC7808ABD2TR4G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC7808ABD2TR4G requirements.
6.How does Aetrix verify that MC7808ABD2TR4G is sourced from the original manufacturer or authorized distributors?
All MC7808ABD2TR4G 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 MC7808ABD2TR4G meets industry standards.
7.What is the process for return or replacement of MC7808ABD2TR4G?
All MC7808ABD2TR4G units undergo pre-shipment inspection (PSI). If there is an issue with MC7808ABD2TR4G, 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 MC7808ABD2TR4G part is unused and in its original packaging.
Return procedure for MC7808ABD2TR4G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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