My Inquiry
My Account
Diodes Incorporated AS7815ADTR-G1
- Part No.:
- AS7815ADTR-G1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
AS7815ADTR-G1.pdf
- Description:
- IC REG LINEAR 15V 1A TO252-2
- Quantity:
- Payment:
- Shipping:
Inventory:9,800
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AS7815ADTR-G1 from Diodes Incorporated is a fixed-output +15 V, 1 A three-terminal positive linear voltage regulator in TO-252-2 (5) / TO252 (Type CJ) package, featuring ±4% output voltage accuracy over −40°C to +125°C, internal short-circuit limiting, thermal shutdown, and safe-area protection. It delivers stable local regulation for microprocessor power supplies, post-regulation after switching converters, and telecom infrastructure boards.
For engineers reviewing the AS7815ADTR-G1 datasheet, AS7815ADTR-G1 pinout, AS7815ADTR-G1 application, or AS7815ADTR-G1 equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, application-specific implementation value, and confirmed alternative options with functional distinctions.
Technical Context
The AS7815ADTR-G1 implements a monolithic series-pass regulator architecture with built-in current limiting, thermal foldback, and output transistor safe-area compensation. Its internal bandgap reference and error amplifier maintain regulation across input voltages from 17.9 V to 30 V at full 1 A load.
It operates without external components beyond standard input/output capacitors (0.33 µF and 0.1 µF), supports dropout as low as 2 V at 1 A, and achieves 58 dB ripple rejection at 120 Hz under typical conditions - enabling use in noise-sensitive analog and digital subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +15 V nominal, ±4% tolerance over full temperature range - ensures compatibility with 15 V logic and analog rails without external trimming. |
| Max Output Current | 1 A continuous - sufficient for powering FPGA I/O banks, DSP cores, or multi-rail PMIC bias supplies. |
| Input Voltage Range | 17.9 V to 30 V - supports common 24 V industrial bus inputs with margin for line transients. |
| Dropout Voltage | 2 V at 1 A, 25°C - enables operation with ≤2 V headroom, reducing heat dissipation vs. older 78xx variants. |
| Ripple Rejection | 58 dB at 120 Hz - suppresses switching noise from upstream DC/DC converters feeding sensitive analog circuitry. |
| Quiescent Current | 3.4–6 mA - low enough for always-on monitoring circuits without compromising system standby efficiency. |
| Thermal Resistance θJA | 100 °C/W (TO-252-2) - requires minimal PCB copper area (≥1 in²) for 1 A operation at ambient ≤70°C. |
Pinout & Package
AS7815ADTR-G1 uses the TO-252-2 (5) / TO252 (Type CJ) surface-mount package - a thermally enhanced DPAK variant with exposed drain pad for PCB heat sinking. Dimensions: 10.4 × 6.7 mm body, 1.7 mm height, 0.312 g weight. Moisture sensitivity level: MSL 3 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (INPUT) | Voltage Input | Accepts unregulated DC input; must be decoupled with ≥0.33 µF ceramic near pin to prevent oscillation. |
| 2 (GND) | Ground Reference | Common return path for input capacitor, output capacitor, and load; connects to exposed thermal pad for thermal conduction. |
| 3 (OUTPUT) | Voltage Output | Delivers regulated +15 V; requires ≥0.1 µF ceramic capacitor directly at pin to ensure stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed +15 V output | Eliminates need for external feedback resistors - reduces BOM count and layout complexity in space-constrained designs. |
| ±4% output accuracy | Meets industrial-grade tolerance requirements for analog sensor excitation and op-amp biasing without calibration. |
| Internal thermal shutdown | Automatically disables output above +150°C junction temperature - prevents catastrophic failure during overload or poor heatsinking. |
| Lead-free & "Green" packaging | RoHS 3 compliant, halogen- and antimony-free molding compound - satisfies environmental compliance for global industrial and telecom deployments. |
| Safe-area protected output transistor | Prevents second breakdown during sustained short-circuit events - enables robust field-replaceable power modules without external current limiting. |
Applications
| Microprocessor Power Supply | Post-Regulation for Switching Supplies |
|---|---|
Use Scenario: Providing clean 15 V bias to FPGA configuration I/O banks and auxiliary analog peripherals on embedded control boards. IC Role / Device Role / Timing Role: Local point-of-load regulator delivering stable voltage independent of main DC/DC converter ripple and load steps. Use Value: Maintains 15 V rail within ±0.6 V across −40°C to +125°C, ensuring reliable I/O voltage compliance and eliminating need for external supervision ICs. |
Use Scenario: Final-stage regulation after a 24 V buck converter in telecom line card power architecture. IC Role / Device Role / Timing Role: Low-noise linear post-regulator suppressing high-frequency switching artifacts before analog front-end stages. Use Value: Achieves 58 dB ripple rejection at 120 Hz and <10 µV/V output noise, preserving SNR in ADC reference paths and RF bias networks. |
| Motherboard Local Regulation | Telecommunication Equipment |
Use Scenario: Dedicated 15 V supply for PCIe slot auxiliary power or clock buffer ICs on server motherboard VRM sections. IC Role / Device Role / Timing Role: Standalone fixed-voltage regulator placed adjacent to load to minimize IR drop and EMI coupling. Use Value: Delivers 1 A with only 2 V dropout, enabling efficient use of 17.9–30 V intermediate bus while maintaining tight load regulation (<150 mV). |
Use Scenario: Powering line interface circuits (e.g., SLIC bias, codec analog sections) in VoIP gateways and base station control units. IC Role / Device Role / Timing Role: High-reliability linear regulator meeting telecom-grade thermal and long-term stability requirements. Use Value: Internal safe-area protection and thermal shutdown ensure uninterrupted operation during surge events, reducing field failure rates in deployed equipment. |
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 |
|---|---|---|---|
| LM7815CDT/NOPB (TI) | Same 15 V output, but ±2% initial accuracy and higher quiescent current (4.5–8 mA); TO-252 package identical. | Lacks "Green" halogen-free certification; not qualified for RoHS 3-compliant telecom deployments requiring full substance compliance. | Preferred where tighter initial accuracy is critical and environmental compliance is secondary. |
| MC7815CD2TR4G (onsemi) | Identical TO-252-2 package and 15 V output, but ±5% tolerance and lower PSRR (50 dB @ 120 Hz); thermal resistance 105 °C/W. | Higher dropout (2.5 V) and reduced ripple rejection limit use in high-efficiency or noise-sensitive post-regulation roles. | Selected when cost is primary constraint and performance margins allow relaxed regulation and noise specs. |
Compared with LM7815CDT/NOPB, AS7815ADTR-G1 trades ±2% initial accuracy for guaranteed RoHS 3 and halogen-free compliance; versus MC7815CD2TR4G, it delivers superior PSRR and tighter thermal resistance - making it optimal for regulated telecom and industrial environments demanding both reliability and regulatory adherence.
Availability
AS7815ADTR-G1 is available at Aetrix Electronics and suitable for microprocessor power supplies, post-regulation for switching supplies, and telecommunication equipment requiring stable component supply, consistent lead-free compliance, and long-lifecycle support.
Supply support for AS7815ADTR-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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions for industrial, automotive, and communications markets.
The AS78XXA series targets cost-sensitive, high-volume linear regulation needs in industrial control, telecom infrastructure, and computing platforms - emphasizing robustness, thermal resilience, and full environmental compliance without external components.
FAQ
What is the minimum input voltage required for AS7815ADTR-G1 to regulate at full 1 A?
The datasheet specifies a minimum input voltage of 17.9 V under recommended operating conditions for 1 A output. This accounts for the 2 V dropout voltage plus margin to sustain regulation across temperature and load variations. Below 17.9 V, output voltage will drop below 15 V, especially at high junction temperatures.
Can AS7815ADTR-G1 be used without an input capacitor?
No - the datasheet mandates a minimum 0.33 µF ceramic capacitor at the INPUT pin, placed as close as possible to the device. Omitting it risks high-frequency oscillation due to parasitic inductance in the input trace, leading to unstable output and potential device damage under transient loads.
How does the TO-252-2 (5) package's thermal performance compare to TO-220-3 for AS7815ADTR-G1?
The TO-252-2 (5) has θJA = 100 °C/W versus TO-220-3's 60 °C/W - meaning it dissipates heat less efficiently in still air. However, its exposed thermal pad allows direct PCB copper connection, enabling thermal resistance as low as 16 °C/W (θJC) when properly soldered to ≥1 in² of 2-oz copper, matching TO-220-3 heatsink performance in compact layouts.
Is AS7815ADTR-G1 qualified for automotive applications per AEC-Q100?
No - the AS78XXA series is not AEC-Q100 qualified. Diodes states that automotive-grade versions require specific change control, PPAP capability, and IATF 16949 manufacturing - which AS7815ADTR-G1 does not meet. For automotive use, engineers must contact Diodes directly for qualified alternatives like the AP7361 series.
AS7815ADTR-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):
- 32V
- Voltage - Output (Min/Fixed):
- 15V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 2V @ 1A (Typ)
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 6 mA
- Current - Supply (Max):
- -
- PSRR:
- 58dB (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
AS7815ADTR-G1 FAQ
1.How can I place an order for AS7815ADTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AS7815ADTR-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 AS7815ADTR-G1 reliable?
The price and inventory of AS7815ADTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AS7815ADTR-G1 is usually 5 days.
3.What payment methods are accepted for AS7815ADTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AS7815ADTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AS7815ADTR-G1?
AS7815ADTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AS7815ADTR-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 AS7815ADTR-G1?
For technical support, including AS7815ADTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AS7815ADTR-G1 requirements.
6.How does Aetrix verify that AS7815ADTR-G1 is sourced from the original manufacturer or authorized distributors?
All AS7815ADTR-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 AS7815ADTR-G1 meets industry standards.
7.What is the process for return or replacement of AS7815ADTR-G1?
All AS7815ADTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AS7815ADTR-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 AS7815ADTR-G1 part is unused and in its original packaging.
Return procedure for AS7815ADTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AS7815ADTR-G1 Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
