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onsemi MC7810ECDTX
, SC-63.JPG)
- Part No.:
- MC7810ECDTX
- Manufacturer:
- onsemi
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
MC7810ECDTX.pdf
- Description:
- IC REG LINEAR 10V 1A TO252
- Quantity:
- Payment:
- Shipping:
Inventory:4,719
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Product details
Overview
MC7810ECDTX from ON Semiconductor (formerly Fairchild) is a fixed-output, 3-terminal positive voltage regulator delivering 10 V at up to 1 A output current in TO-252 (D-PAK) surface-mount package. It integrates thermal overload protection, short-circuit protection, and safe operating area (SOA) protection for robust operation in industrial power supplies and embedded systems requiring stable DC bias.
For engineers reviewing the MC7810ECDTX datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage (2 V at 1 A), line regulation (≤240 mV over VI = 14.5–30 V), load regulation (≤240 mV over IO = 5 mA–1.5 A), and operating temperature range (−40 °C to +125 °C).
Technical Context
The MC7810ECDTX implements a monolithic series pass regulator architecture with internal error amplifier, reference voltage generator, current-limiting circuitry, and thermal shutdown logic. Its SOA protection actively limits power dissipation during transient overload conditions without latch-up.
It operates as a linear regulator requiring minimum input-to-output differential of 2.0 V under full load, with ripple rejection of 55–71 dB at 120 Hz and output noise of 76 µV RMS (10 Hz–100 kHz). No external components are required for basic operation, though input (0.33 µF) and output (0.1 µF) capacitors are recommended for stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10 V ±5% (guaranteed 11.4–12.6 V at TJ = +25 °C per MC7812E data; MC7810E not explicitly listed but follows same family tolerance) |
| Max Output Current | 1 A continuous - supports high-current loads like microcontroller rails or sensor interfaces without external boost |
| Dropout Voltage | 2 V at 1 A - dictates minimum input supply headroom (e.g., ≥12 V input needed for stable 10 V output) |
| Line Regulation | ≤240 mV over VI = 14.5–30 V - ensures output stability despite input rail variation (e.g., unregulated AC/DC adapter ripple) |
| Load Regulation | ≤240 mV over IO = 5 mA–1.5 A - maintains accuracy across wide dynamic load range (e.g., sleep-to-active MCU transitions) |
| Ripple Rejection | 55–71 dB at 120 Hz - suppresses rectified AC ripple from upstream transformer-based supplies |
| Operating Temp | −40 °C to +125 °C - qualified for automotive under-hood and industrial control cabinet environments |
Pinout & Package
MC7810ECDTX uses the TO-252-3L (D-PAK) surface-mount package with exposed thermal pad on the underside for enhanced heat dissipation. Pin numbering follows standard D-PAK orientation: Pin 1 = Input, Pin 2 = Ground, Pin 3 = Output.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Input) | Unregulated DC input supply connection | Must be ≥12 V nominal to sustain 10 V output under 1 A load; requires 0.33 µF ceramic bypass capacitor near pin |
| 2 (GND) | Common reference and return path | Low-impedance ground plane connection essential for regulation accuracy and noise immunity |
| 3 (Output) | Regulated 10 V DC output | Delivers stable 10 V to load; requires 0.1 µF ceramic capacitor directly at pin for transient response and stability |
Key Features
| Feature | Design Value |
|---|---|
| Thermal Overload Protection | Automatic shutdown below Tj = +165 °C with hysteresis - prevents permanent damage during sustained overload or poor heatsinking |
| Short-Circuit Protection | Limits output current to ~230 mA during hard fault - enables safe operation in wiring-error-prone industrial field installations |
| SOA Protection | Dynamic power limiting based on VCE × IC - avoids second breakdown failure during inductive load switching transients |
| Fixed Output Architecture | No external resistors required - eliminates calibration drift and reduces BOM count vs. adjustable regulators |
| D-PAK Thermal Performance | θJA ≈ 65 °C/W (standard PCB layout) - enables 1 A operation with minimal copper area, no heatsink needed for moderate ambient |
Applications
| Industrial PLC I/O Module Power | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Providing isolated 10 V rail for analog sensor signal conditioning and digital logic in programmable logic controller input/output modules. IC Role / Device Role / Timing Role: Primary linear regulator supplying clean, low-noise 10 V to op-amps, ADC references, and microcontroller peripherals. Use Value: Maintains <±5% output accuracy across −40 °C to +85 °C ambient while rejecting >55 dB of 120 Hz ripple from bulk DC bus - ensuring consistent 12-bit ADC performance. | Use Scenario: Generating 10 V supply for LIN transceiver bias and interior lighting driver ICs in vehicle body electronics. IC Role / Device Role / Timing Role: Fixed-voltage regulator powering LIN physical layer and LED driver logic, co-located with ECU main board. Use Value: Withstands automotive load dump transients via integrated SOA and thermal shutdown, eliminating need for external crowbar circuits - reducing footprint by 30% vs. discrete protection solutions. |
| Medical Patient Monitor Front-End | Test & Measurement Equipment Bias Supply |
Use Scenario: Delivering stable 10 V to precision instrumentation amplifiers and isolation barrier drivers in portable diagnostic devices. IC Role / Device Role / Timing Role: Low-noise linear regulator establishing reference voltage for biopotential signal chains (ECG/EEG). Use Value: 76 µV RMS output noise and <240 mV load regulation ensure ≤0.02% gain error in 100× gain stages - meeting IEC 60601-1 signal integrity requirements. | Use Scenario: Supplying calibrated 10 V reference to DACs and analog multiplexers in automated test equipment channel cards. IC Role / Device Role / Timing Role: Precision voltage source enabling traceable 10 V output for calibration-grade signal generation. Use Value: ±5% initial tolerance and <1 mV/°C drift allow direct use as system-level reference without trimming - cutting calibration time by 40% in production test fixtures. |
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 |
|---|---|---|---|
| LM7810CDT | TO-252 package, same 10 V output, but wider line regulation (≤500 mV) and lower ripple rejection (≥50 dB) | Suitable for non-critical consumer applications; lacks SOA protection | Select when cost sensitivity outweighs robustness requirements and thermal margin is ample |
| MC7810ACT | TO-220 through-hole package, identical electrical specs, higher θJA (65 °C/W vs. 50 °C/W for D-PAK) | Better suited for prototyping or low-volume assemblies where manual soldering is preferred | Choose for breadboard evaluation or legacy through-hole designs needing drop-in replacement |
Compared with LM7810CDT, MC7810ECDTX offers superior SOA protection and tighter regulation for industrial reliability; versus MC7810ACT, it delivers identical performance in a smaller, surface-mount footprint ideal for space-constrained PCBs - enabling higher density without sacrificing thermal performance.
Availability
MC7810ECDTX is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, and medical device design requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for MC7810ECDTX 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
ON Semiconductor (formerly Fairchild Semiconductor) is a global leader in intelligent power and sensing technologies, serving automotive, industrial, cloud computing, and medical markets with high-reliability semiconductor solutions.
The MC78XXE series was designed specifically for cost-sensitive, high-volume linear regulation applications demanding ruggedness, simplicity, and wide-temperature operation - targeting power conversion in harsh-environment embedded systems.
FAQ
What is the maximum input voltage rating for MC7810ECDTX?
The absolute maximum input voltage for MC7810ECDTX is 35 V, as specified in the MC78XXE family Absolute Maximum Ratings table. Operation above this level risks permanent damage. For reliable 10 V output at 1 A, the recommended input range is 12 V to 30 V - ensuring sufficient headroom while staying within safe SOA limits. Always verify actual input ripple amplitude does not exceed 35 V peak under worst-case conditions.
Does MC7810ECDTX require external capacitors to function?
MC7810ECDTX will regulate without external capacitors but is not stable or guaranteed to meet specifications without them. The datasheet mandates a 0.33 µF ceramic capacitor at the input pin and a 0.1 µF ceramic capacitor at the output pin. Omitting either causes oscillation, poor transient response, or excessive noise - especially critical in precision analog or high-speed digital applications powered by MC7810ECDTX.
Can MC7810ECDTX be used in adjustable-output configurations?
Yes, MC7810ECDTX can be adapted for adjustable output using external resistive feedback networks, as demonstrated in Figure 11 of the MC78XXE datasheet. However, doing so forfeits its factory-trimmed 10 V accuracy and introduces additional error sources (resistor tolerance, temperature drift, quiescent current injection). For true adjustable regulation, ON Semiconductor recommends dedicated LDOs like NCP1117 or TLV70xx families instead of modifying MC7810ECDTX.
What thermal management is required for MC7810ECDTX at full 1 A load?
At 1 A output with 12 V input (2 V dropout), MC7810ECDTX dissipates 2 W. On a standard 1 oz copper PCB with 1 in² exposed pad area, junction temperature rise is ~130 °C - exceeding the 125 °C max operating limit. To sustain 1 A continuously, use ≥2 in² copper pour under the D-PAK thermal pad, or add a small heatsink. Derating to 700 mA is recommended for ambient >70 °C without enhanced cooling.
Is MC7810ECDTX pin-compatible with other MC78XXE variants like MC7805ECDTX or MC7812ECDTX?
Yes, all MC78XXE series devices including MC7810ECDTX share identical TO-252-3L (D-PAK) pinout: Pin 1 = Input, Pin 2 = Ground, Pin 3 = Output. This allows direct substitution between output voltages (5 V, 10 V, 12 V, etc.) on the same PCB footprint - provided input voltage headroom and thermal design accommodate the specific variant's dropout and power dissipation requirements.
MC7810ECDTX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- 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):
- 10V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- 0°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
MC7810ECDTX FAQ
1.How can I place an order for MC7810ECDTX through Aetrix?
Please submit a Request for Quotation (RFQ) for MC7810ECDTX 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 MC7810ECDTX reliable?
The price and inventory of MC7810ECDTX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC7810ECDTX is usually 5 days.
3.What payment methods are accepted for MC7810ECDTX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC7810ECDTX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC7810ECDTX?
MC7810ECDTX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC7810ECDTX 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 MC7810ECDTX?
For technical support, including MC7810ECDTX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC7810ECDTX requirements.
6.How does Aetrix verify that MC7810ECDTX is sourced from the original manufacturer or authorized distributors?
All MC7810ECDTX 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 MC7810ECDTX meets industry standards.
7.What is the process for return or replacement of MC7810ECDTX?
All MC7810ECDTX units undergo pre-shipment inspection (PSI). If there is an issue with MC7810ECDTX, 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 MC7810ECDTX part is unused and in its original packaging.
Return procedure for MC7810ECDTX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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