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Diodes Incorporated AS7805ADTR-G1
- Part No.:
- AS7805ADTR-G1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
AS7805ADTR-G1.pdf
- Description:
- IC REG LINEAR 5V 1A TO252-2
- Quantity:
- Payment:
- Shipping:
Inventory:6,423
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Product details
Overview
AS7805ADTR-G1 from Diodes Incorporated is a fixed-output +5V, 1A three-terminal positive linear voltage regulator in TO-252-2 (5) package, featuring internal current limiting, thermal shutdown, and safe-area protection. It delivers stable local regulation for microprocessor power supplies, post-regulation after switching converters, and telecom board-level applications with ±4% output voltage accuracy over –40°C to +125°C.
For engineers reviewing the AS7805ADTR-G1 datasheet, AS7805ADTR-G1 pinout, AS7805ADTR-G1 application, or AS7805ADTR-G1 equivalent, key selection criteria include dropout voltage (2 V at 1 A), load regulation (20–50 mV), PSRR (70 dB at 120 Hz), thermal resistance (θJA = 100°C/W), and RoHS-compliant "Green" packaging with halogen/antimony-free molding compound.
Technical Context
The AS7805ADTR-G1 implements a monolithic series-pass regulator architecture with integrated bandgap reference, error amplifier, and Darlington output transistor. Its internal safe-area compensation ensures stable operation under transient overload without external components.
It operates across input voltages from 7.5 V to 25 V, maintains output regulation with ≤50 mV line/load variation, and sustains 1 A continuous output current when adequately heatsinked-despite its surface-mount TO-252-2 (5) package's higher θJA (100°C/W) versus through-hole alternatives.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +5.0 V ±4% over full temperature range (–40°C to +125°C); enables direct replacement of legacy 7805 regulators in non-precision analog rails. |
| Output Current | Up to 1 A continuous; supports mid-power digital logic, FPGA I/O banks, and sensor interface circuitry without external pass devices. |
| Dropout Voltage | 2 V at 1 A and +25°C; requires minimum 7 V input for regulated 5 V output-critical for low-headroom industrial power designs. |
| PSRR | 70 dB at 120 Hz; suppresses ripple from upstream switching supplies, reducing need for additional LC filtering stages. |
| Quiescent Current | 3.2–6 mA at no load; balances low standby loss with fast transient response during load steps. |
| Thermal Resistance θJA | 100°C/W (TO-252-2); mandates PCB copper pour ≥4 cm² for 1 A operation at ambient ≤60°C per JEDEC JESD51-7. |
| Output Noise | 10 µV/√Hz (10 Hz–100 kHz); suitable for noise-sensitive analog subsystems like ADC references or op-amp biasing. |
Pinout & Package
AS7805ADTR-G1 uses the TO-252-2 (5) surface-mount package (also labeled TO252 Type CJ), with exposed thermal pad for enhanced heat dissipation. Pin 1 is INPUT, Pin 2 is GND, and Pin 3 is OUTPUT-matching standard 78xx pinout orientation for layout compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (INPUT) | Voltage Input | Accepts unregulated DC input (7.5–25 V); requires ≥0.33 µF ceramic input capacitor placed within 5 mm for stability. |
| 2 (GND) | Ground Reference | Common return path for input and output; must connect directly to low-impedance ground plane to minimize noise coupling. |
| 3 (OUTPUT) | Voltage Output | Delivers regulated +5 V; requires ≥0.1 µF ceramic output capacitor adjacent to pin for transient response and ESR stability. |
Key Features
| Feature | Design Value |
|---|---|
| Internal Short-Circuit Protection | Limits output current to ~50 mA during sustained short, preventing catastrophic failure without external fusing. |
| Thermal Shutdown | Activates at +150°C junction temperature, latching off until die cools by ≥20°C-enabling self-recovery in intermittent overload conditions. |
| Safe-Area Compensation | Prevents second breakdown in the output transistor during high-VCE/IC transients, eliminating need for external SOA protection networks. |
| Lead-Free & Halogen-Free | Fully RoHS 3 compliant with <900 ppm Br+Cl and <1000 ppm Sb; meets automotive PPAP-ready material declarations for Tier-1 supply chains. |
| Low Load Regulation | 20–50 mV variation from 5 mA to 1 A load; simplifies system-level calibration by minimizing voltage drift across operating modes. |
Applications
| Microprocessor Power Supply | Post-Regulation for SMPS |
|---|---|
Use Scenario: Providing clean 5 V rail to ARM Cortex-M7 MCU cores and peripherals on embedded control boards. IC Role / Device Role / Timing Role: Primary local regulator delivering stable VCC independent of main 12 V or 24 V system bus fluctuations. Use Value: ±4% output tolerance and 70 dB PSRR ensure reliable reset behavior and ADC accuracy despite upstream switching noise. |
Use Scenario: Tightening output voltage tolerance of a 5.5 V buck converter feeding USB-powered peripherals. IC Role / Device Role / Timing Role: Low-noise linear post-regulator removing residual ripple and high-frequency artifacts from switch-mode stage. Use Value: 10 µV/√Hz noise floor and 20 mV load regulation enable compliance with USB 2.0 power integrity requirements. |
| Motherboard Local Regulation | Telecom Line Card Power |
Use Scenario: Generating auxiliary 5 V for PCIe slot management controllers and SMBus interfaces on server motherboards. IC Role / Device Role / Timing Role: Distributed point-of-load regulator placed near ICs to minimize IR drop and improve transient response. Use Value: TO-252-2 package allows compact placement; 1 A rating supports burst-mode loads up to 800 mA without derating. |
Use Scenario: Powering DSPs and PHY transceivers on carrier-grade line cards operating in extended temperature environments. IC Role / Device Role / Timing Role: High-reliability voltage source meeting –40°C to +85°C industrial temp grade with thermal shutdown fallback. Use Value: Internal thermal protection and 125°C max TJ rating eliminate need for external thermal monitoring circuits. |
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 |
|---|---|---|---|
| LM7805CDT-TR | Higher θJA (120°C/W), wider VOUT tolerance (±5%), no "Green" halogen-free certification. | Not qualified for automotive or eco-compliant industrial programs requiring RoHS 3 and antimony-free materials. | Select only if legacy LM78xx footprint compatibility is mandatory and environmental compliance is not required. |
| TL780-05CKTTR | Lower quiescent current (2.5 mA typ), tighter initial VOUT tolerance (±2%), but no internal thermal shutdown. | Requires external thermal cutoff for continuous 1 A operation; unsuitable for unmonitored embedded deployments. | Choose when ultra-low standby power dominates over safety robustness in battery-backed systems. |
Compared with LM7805CDT-TR and TL780-05CKTTR, AS7805ADTR-G1 uniquely combines automotive-grade material compliance, integrated thermal shutdown, and 100°C/W θJA in a cost-optimized TO-252 package-making it optimal for industrial and telecom designs where reliability, regulatory alignment, and thermal margin are jointly critical.
Availability
AS7805ADTR-G1 is available at Aetrix Electronics and suitable for microprocessor power supplies, post-regulation for switching supplies, and telecom line card applications requiring stable component supply, long-term lifecycle support, and RoHS 3–compliant sourcing.
Supply support for AS7805ADTR-G1 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 semiconductor company specializing in discrete, analog, and mixed-signal solutions for industrial, computing, communications, and consumer markets.
The AS78XXA series targets cost-sensitive, high-volume linear regulation needs-delivering robustness, ease of use, and environmental compliance without design complexity or external protection components.
FAQ
What is the maximum input voltage for AS7805ADTR-G1?
The absolute maximum input voltage is 36 V, but the recommended operating range is 7.5 V to 25 V per datasheet Section 4. Exceeding 25 V risks exceeding power dissipation limits even at light loads, especially in the TO-252-2 package with its 100°C/W thermal resistance.
Does AS7805ADTR-G1 require external capacitors?
Yes: a minimum 0.33 µF ceramic capacitor must be placed within 5 mm of the INPUT pin, and a minimum 0.1 µF ceramic capacitor must be placed adjacent to the OUTPUT pin. These are mandatory for stability and transient response-omitting them causes oscillation or overshoot during load steps.
Can AS7805ADTR-G1 replace older 7805 variants in existing PCB layouts?
Yes, when using the TO-252-2 (5) variant-the pinout (INPUT-GND-OUTPUT) matches standard 78xx orientation. However, thermal pad layout must follow Diodes' suggested pad dimensions (11.6 × 7.0 mm), and copper pour area must be increased to compensate for higher θJA versus TO-220 packages.
Is AS7805ADTR-G1 qualified for automotive applications?
No-AS7805ADTR-G1 is not AEC-Q100 qualified. While it meets industrial temperature range (–40°C to +125°C) and RoHS 3 standards, Diodes explicitly states that automotive-grade versions require separate part numbers and PPAP documentation, which are not assigned to this orderable SKU.
AS7805ADTR-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 25V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 2V @ 1A (Typ)
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 6 mA
- Current - Supply (Max):
- -
- PSRR:
- 70dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-252-3
AS7805ADTR-G1 FAQ
1.How can I place an order for AS7805ADTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AS7805ADTR-G1 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 AS7805ADTR-G1 reliable?
The price and inventory of AS7805ADTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AS7805ADTR-G1 is usually 5 days.
3.What payment methods are accepted for AS7805ADTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AS7805ADTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AS7805ADTR-G1?
AS7805ADTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AS7805ADTR-G1 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 AS7805ADTR-G1?
For technical support, including AS7805ADTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AS7805ADTR-G1 requirements.
6.How does Aetrix verify that AS7805ADTR-G1 is sourced from the original manufacturer or authorized distributors?
All AS7805ADTR-G1 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 AS7805ADTR-G1 meets industry standards.
7.What is the process for return or replacement of AS7805ADTR-G1?
All AS7805ADTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AS7805ADTR-G1, 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 AS7805ADTR-G1 part is unused and in its original packaging.
Return procedure for AS7805ADTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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