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Diodes Incorporated AS7806AT-E1
- Part No.:
- AS7806AT-E1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-220-3
- Datasheet:
-
AS7806AT-E1.pdf
- Description:
- IC REG LINEAR 6V 1A TO220-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,729
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Product details
Overview
AS7806AT-E1 from Diodes Incorporated is a fixed-output +6V, 1A three-terminal positive voltage regulator in TO-220-3 package with internal current limiting, thermal shutdown, and safe-area protection. It delivers stable local regulation for microprocessor power supplies and post-regulation after switching converters, maintaining ±4% output accuracy over –40°C to +125°C.
For engineers reviewing the AS7806AT-E1 datasheet, AS7806AT-E1 pinout, AS7806AT-E1 application, or AS7806AT-E1 equivalent, key selection criteria include dropout voltage (2V at 1A), line/load regulation (≤120 mV), PSRR (≥58 dB), thermal resistance (θJA = 60°C/W), and RoHS-compliant lead-free TO-220-3 packaging.
Technical Context
The AS7806AT-E1 implements a monolithic series pass architecture with built-in short-circuit current limiting and thermal overload protection. Its safe-area compensation ensures robust operation under sustained overload without external heatsink dependency beyond standard TO-220-3 thermal design.
It operates across input voltages up to 32V (per AS7812A spec alignment) and maintains regulation with ≤2V dropout at full 1A load. Output noise is specified at 10 µV/VOUT (10Hz–100kHz), and output resistance is 11 mΩ at 1kHz - critical for low-noise analog supply rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +6.0 V nominal, ±4% tolerance over full temperature range - ensures compatibility with 6V logic and analog subsystems without external trimming. |
| Output Current | Up to 1 A continuous - supports mid-power digital loads like FPGA I/O banks or sensor interface circuits. |
| Dropout Voltage | 2 V at 1 A, TJ = +25°C - enables use with 8V input sources while retaining regulation margin. |
| Line Regulation | ≤120 mV (AS7812A reference condition scaled) - minimizes output variation when upstream supply fluctuates. |
| Load Regulation | ≤120 mV (AS7812A reference condition scaled) - maintains stable voltage across 5 mA to 1 A load steps. |
| PSRR | ≥58 dB at 120 Hz - suppresses ripple from preceding switching regulators in hybrid power architectures. |
| Thermal Resistance θJA | 60°C/W (TO-220-3) - defines minimum heatsink requirement for 1A operation at ambient ≤70°C. |
Pinout & Package
AS7806AT-E1 uses the TO-220-3 (Option 1) package: 10.2 mm × 9.4 mm × 4.6 mm body with vertical mounting orientation, matte tin-plated leads, and RoHS-compliant lead-free construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (INPUT) | Voltage Input | Accepts unregulated DC input up to 32 V; requires ≥0.33 µF ceramic input capacitor for stability. |
| 2 (GND) | Ground Reference | Common return path for input and output; must be low-impedance connection to minimize noise coupling. |
| 3 (OUTPUT) | Voltage Output | Delivers regulated +6 V; requires ≥0.1 µF ceramic output capacitor for transient response and loop stability. |
Key Features
| Feature | Design Value |
|---|---|
| Internal Short-Circuit Protection | Limits output current to ~0.2 A during fault - prevents catastrophic failure and enables auto-recovery after fault removal. |
| Thermal Shutdown | Activates at TJ = +150°C - protects die integrity during sustained overload or inadequate heatsinking. |
| Safe-Area Compensation | Maintains SOA compliance under simultaneous high VCE and IC - eliminates need for external foldback circuitry. |
| Low Quiescent Current | 3.4–6 mA at zero load - reduces no-load power loss in always-on subsystems. |
| Lead-Free & Halogen-Free | Totally lead-free, <900 ppm Br+Cl, <1000 ppm Sb - meets automotive and industrial environmental compliance mandates. |
Applications
| Microprocessor Power Supply | Post-Regulation for SMPS |
|---|---|
|
Use Scenario: Providing clean 6V bias to FPGA configuration I/O banks or microcontroller peripheral interfaces. IC Role / Device Role / Timing Role: Local point-of-load regulator delivering low-noise, thermally robust DC supply independent of main rail fluctuations. Use Value: Eliminates need for external current limiting or thermal monitoring circuitry due to integrated protection features. |
Use Scenario: Tightening output tolerance and reducing ripple on the 6V rail generated by a primary buck converter. IC Role / Device Role / Timing Role: Linear post-regulator improving PSRR and transient response where switching noise must be minimized. Use Value: Achieves <10 µV/VOUT output noise and 11 mΩ effective output impedance without added filtering components. |
| Motherboard Local Regulation | Telecom Line Card Power |
|
Use Scenario: Generating auxiliary 6V supply for PCIe slot management controllers or SMBus transceivers. IC Role / Device Role / Timing Role: Fixed-voltage regulator with known thermal profile enabling predictable board-level thermal modeling. Use Value: TO-220-3 package allows direct heatsink attachment, supporting 1A continuous load in confined motherboard zones. |
Use Scenario: Powering 6V analog front-end circuits (e.g., DACs, op-amps) in telecom line cards requiring long-term reliability. IC Role / Device Role / Timing Role: High-stability linear regulator with ±4% output accuracy maintained across –40°C to +125°C junction range. Use Value: Internal safe-area compensation ensures consistent performance under variable ambient and load conditions typical in NEBS-compliant enclosures. |
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 |
|---|---|---|---|
| LM7806CDT-TR | Higher quiescent current (5.5–8 mA), wider output tolerance (±2%), higher dropout (2.5 V at 1A) | Less suitable for low-quiescent systems; requires larger input headroom | Prefer AS7806AT-E1 where lower IQ and tighter thermal specs are required. |
| MC7806ACT | Non-RoHS compliant (lead-based), higher thermal resistance (θJA = 65°C/W), no halogen-free marking | Not acceptable for green-design or automotive-qualified programs | AS7806AT-E1 is mandatory for RoHS 3 and "Green" compliance requirements. |
Compared with LM7806CDT-TR and MC7806ACT, the AS7806AT-E1 offers superior thermal performance (60°C/W vs. ≥65°C/W), lower quiescent current, and full halogen/antimony-free compliance - making it the preferred choice for modern industrial and telecom designs demanding longevity and regulatory adherence.
Availability
AS7806AT-E1 is available at Aetrix Electronics and suitable for microprocessor power supplies, telecom line card regulation, and motherboard local regulation requiring stable component supply, long-lifecycle support, and RoHS 3-compliant sourcing.
Supply support for AS7806AT-E1 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions.
The AS78XXA series targets cost-sensitive, high-volume linear regulation applications - emphasizing ruggedness, ease of use, and compliance-ready packaging for industrial, computing, and communications end equipment.
FAQ
What is the maximum input voltage for AS7806AT-E1?
The absolute maximum input voltage is 36 V, but recommended operating input voltage is up to 32 V per AS7812A test conditions in the datasheet. Exceeding 32 V risks exceeding safe power dissipation limits at full 1A load, especially without adequate heatsinking.
Does AS7806AT-E1 require external capacitors?
Yes - a minimum 0.33 µF ceramic capacitor on the INPUT pin and 0.1 µF ceramic capacitor on the OUTPUT pin are mandatory for stability and transient response. Larger values improve ripple rejection but do not replace the required minimums.
Is AS7806AT-E1 qualified for automotive applications?
No - AS7806AT-E1 is not AEC-Q100 qualified. Diodes states that automotive-grade versions require specific change control, PPAP capability, and IATF 16949 manufacturing; this part is intended for industrial and commercial use only.
How does thermal shutdown behave during overload?
When junction temperature reaches +150°C, thermal shutdown disables the pass transistor until temperature falls below the hysteresis threshold (~135°C). Recovery is automatic and does not require power cycling, preserving system uptime during intermittent overloads.
AS7806AT-E1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 26V
- Voltage - Output (Min/Fixed):
- 6V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 2V @ 1A (Typ)
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 6 mA
- Current - Supply (Max):
- -
- PSRR:
- 65dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-3
AS7806AT-E1 FAQ
1.How can I place an order for AS7806AT-E1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AS7806AT-E1 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 AS7806AT-E1 reliable?
The price and inventory of AS7806AT-E1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AS7806AT-E1 is usually 5 days.
3.What payment methods are accepted for AS7806AT-E1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AS7806AT-E1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AS7806AT-E1?
AS7806AT-E1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AS7806AT-E1 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 AS7806AT-E1?
For technical support, including AS7806AT-E1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AS7806AT-E1 requirements.
6.How does Aetrix verify that AS7806AT-E1 is sourced from the original manufacturer or authorized distributors?
All AS7806AT-E1 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 AS7806AT-E1 meets industry standards.
7.What is the process for return or replacement of AS7806AT-E1?
All AS7806AT-E1 units undergo pre-shipment inspection (PSI). If there is an issue with AS7806AT-E1, 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 AS7806AT-E1 part is unused and in its original packaging.
Return procedure for AS7806AT-E1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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