My Inquiry
My Account
Diodes Incorporated AS7808ADTR-G1
- Part No.:
- AS7808ADTR-G1
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
AS7808ADTR-G1.pdf
- Description:
- IC REG LINEAR 8V 1A TO252-2
- Quantity:
- Payment:
- Shipping:
Inventory:1,140
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AS7808ADTR-G1 from Diodes Incorporated is a fixed-output +8V, 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 and post-regulation of switching converters with ±4% output voltage accuracy over –40°C to +125°C.
For engineers reviewing the AS7808ADTR-G1 datasheet, AS7808ADTR-G1 pinout, AS7808ADTR-G1 application, or AS7808ADTR-G1 equivalent, key selection criteria include dropout voltage (2V at 1A), load regulation (≤50 mV), ripple rejection (≥58 dB), and RoHS-compliant "Green" packaging with halogen/antimony-free molding compound.
Technical Context
The AS7808ADTR-G1 implements a monolithic bipolar linear regulator architecture with integrated pass transistor, error amplifier, reference, and protection circuitry. Its design centers on robustness under overload and thermal stress, with safe-area compensation ensuring reliable operation up to 1A output current when adequately heatsinked.
It operates within a recommended input voltage range of 10.8V to 27V for the 8V variant (inferred from AS7812A/AS7815A VIN min/max scaling and typical dropout), supports 0.1µF–0.33µF input/output capacitance per application circuit, and maintains stability without external compensation across its full operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +8 V nominal, ±4% tolerance over –40°C to +125°C - ensures compatibility with 8V logic or analog rails requiring tight DC accuracy. |
| Max Output Current | 1 A continuous - sufficient for powering core logic, I/O buffers, or small FPGA domains without external boosting. |
| Dropout Voltage | 2 V at 1 A, TJ = +25°C - defines minimum VIN–VOUT headroom needed to sustain regulation; impacts efficiency in low-headroom systems. |
| Line Regulation | ≤120 mV (AS7812A data scaled conservatively) - limits output variation due to input supply ripple or drift, critical for noise-sensitive analog stages. |
| Load Regulation | ≤50 mV (AS7805A/AS7812A max values) - constrains output shift from no-load to full-load, enabling stable biasing across dynamic current profiles. |
| Ripple Rejection | ≥58 dB at 120 Hz - suppresses low-frequency switching noise from upstream DC/DC converters, preserving signal integrity. |
| Quiescent Current | 3.2–6 mA - determines no-load power loss; enables use in always-on subsystems with constrained standby budgets. |
Pinout & Package
AS7808ADTR-G1 is housed in a TO-252-2 (5) surface-mount package (also labeled TO252 Type CJ), featuring exposed thermal pad for enhanced heat dissipation. Thermal resistance θJA is 100°C/W; θJC is 16°C/W. Moisture sensitivity level is MSL 3 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (INPUT) | Voltage Input | Accepts unregulated DC input; must be ≥10.8V to maintain 8V output at full load given 2V dropout. |
| 2 (GND) | Ground Reference | Common return path for input, output, and internal circuitry; requires low-impedance PCB connection to minimize noise coupling. |
| 3 (OUTPUT) | Voltage Output | Delivers regulated +8V; requires 0.1 µF ceramic capacitor per datasheet application circuit for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Internal Short-Circuit Protection | Limits output current to ~0.2 A during sustained short, preventing device destruction and system fault propagation. |
| Thermal Shutdown Activation | Triggers at TJ ≈ +150°C junction temperature, allowing automatic recovery after cooling - eliminates need for external thermal monitoring. |
| Safe-Area Compensation | Maintains SOA compliance during transient overloads, enabling reliable 1A delivery without external current-sense or foldback circuitry. |
| Lead-Free & Halogen-Free Packaging | TO-252-2 (5) meets RoHS 3 and Diodes' "Green" standard (<900 ppm Br/Cl, <1000 ppm Sb) - satisfies environmental compliance for industrial and telecom end equipment. |
| Low Load Regulation | ≤50 mV shift from 5 mA to 1 A load - simplifies power sequencing and reduces need for post-regulator LDOs in multi-rail systems. |
Applications
| Microprocessor Power Supply | Post-Regulation for Switching Supplies |
|---|---|
Use Scenario: Providing clean, low-noise 8V rail to legacy microcontrollers or peripheral interface ICs requiring fixed positive bias. IC Role / Device Role / Timing Role: Primary local voltage regulator delivering stable DC power independent of main system rail fluctuations. Use Value: Eliminates need for custom feedback networks or external pass transistors while maintaining ±4% output accuracy across industrial temperature range. |
Use Scenario: Tightening output voltage tolerance and reducing residual ripple from a 12V or 15V buck converter feeding analog front-ends or precision ADC references. IC Role / Device Role / Timing Role: Secondary linear regulator filtering high-frequency switching artifacts and improving PSRR beyond what the primary DC/DC can achieve. Use Value: Achieves ≥58 dB ripple rejection at 120 Hz and ≤50 mV load regulation, enabling sub-mV-level analog signal fidelity. |
| Motherboard Local Regulation | Telecom Line Card Power |
Use Scenario: On-board 8V generation for PCIe slot auxiliary power, fan controllers, or SMBus interface ICs where space and thermal management are constrained. IC Role / Device Role / Timing Role: Compact, surface-mount voltage regulator mounted directly adjacent to load to minimize trace inductance and IR drop. Use Value: TO-252-2 (5) package with exposed thermal pad enables 1A delivery in footprint-limited layouts without through-hole heatsinking. |
Use Scenario: Powering line-side interface circuits (e.g., SLIC bias, codec analog sections) in carrier-grade access equipment requiring long-term reliability and RoHS compliance. IC Role / Device Role / Timing Role: Industrial-grade linear regulator meeting extended temperature (-40°C to +125°C) and environmental (halogen-free) mandates. Use Value: Integrated thermal shutdown and safe-area protection ensure uninterrupted operation during ambient temperature excursions or transient overloads common in telco cabinets. |
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 |
|---|---|---|---|
| AS7808AT-E1 | Same electrical specs, but in TO-220-3 (through-hole) package with θJA = 60°C/W - higher thermal performance but larger footprint. | Suitable for prototyping, low-volume assemblies, or designs requiring manual soldering or mechanical mounting. | Select when board-level thermal management favors through-hole heatsinking or when reworkability outweighs space constraints. |
| LM7808CDT/NOPB | Pin-compatible 8V regulator (TO-252), but ±2% initial accuracy (tighter), higher IQ (6–8 mA), and lower PSRR (45 dB @ 120 Hz). | Better suited for cost-sensitive consumer applications where tighter initial tolerance matters more than ripple rejection or quiescent current. | Choose if ±2% output accuracy is mandatory and 13 dB lower PSRR is acceptable; verify thermal derating with θJA = 100°C/W. |
Compared with AS7808ADTR-G1, AS7808AT-E1 offers superior thermal dissipation in legacy form factors, while LM7808CDT/NOPB trades ripple rejection and efficiency for tighter initial voltage tolerance - making the AS7808ADTR-G1 optimal for noise-critical, thermally constrained industrial designs.
Availability
AS7808ADTR-G1 is available at Aetrix Electronics and suitable for microprocessor power supplies, post-regulation of switching supplies, and telecom line card power requiring stable component supply, RoHS 3 compliance, and halogen-free manufacturing.
Supply support for AS7808ADTR-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, computing, and communications markets.
The AS78XXA series targets cost-effective, robust local regulation in space-constrained applications - designed specifically for on-card voltage stabilization where simplicity, thermal resilience, and environmental compliance are prioritized over ultra-low IQ or programmability.
FAQ
What is the minimum input voltage required for AS7808ADTR-G1 to regulate at full 1A load?
The AS7808ADTR-G1 requires a minimum input voltage of 10.8 V to maintain regulation at 1 A, based on its 2 V dropout voltage specification at +25°C and conservative derating for temperature and process variation. Operation below this threshold results in unregulated output collapse.
Can AS7808ADTR-G1 be used without an input bypass capacitor?
No - the datasheet specifies a 0.33 µF tantalum or aluminum electrolytic capacitor on the INPUT pin. Omitting it risks instability, increased line regulation error, and potential oscillation during fast input transients due to insufficient high-frequency decoupling at the regulator's control loop input.
Is the TO-252-2 (5) package of AS7808ADTR-G1 compatible with standard TO-252 footprints?
Yes - the TO-252-2 (5) package (also designated TO252 Type CJ) uses industry-standard 2.3 mm × 6.7 mm body dimensions and 2.54 mm lead pitch. Its pin 1–2–3 assignment (INPUT–GND–OUTPUT) matches JEDEC MO-237, ensuring compatibility with generic TO-252 land patterns and pick-and-place tooling.
Does AS7808ADTR-G1 support automotive qualification?
No - AS7808ADTR-G1 is not AEC-Q100 qualified. While it operates across –40°C to +125°C, Diodes explicitly states that automotive-grade variants require separate change control, PPAP capability, and IATF 16949 manufacturing - none of which apply to this commercial-industrial grade part.
AS7808ADTR-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:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 28V
- 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:
- TO-252-3
AS7808ADTR-G1 FAQ
1.How can I place an order for AS7808ADTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AS7808ADTR-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 AS7808ADTR-G1 reliable?
The price and inventory of AS7808ADTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AS7808ADTR-G1 is usually 5 days.
3.What payment methods are accepted for AS7808ADTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AS7808ADTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AS7808ADTR-G1?
AS7808ADTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AS7808ADTR-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 AS7808ADTR-G1?
For technical support, including AS7808ADTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AS7808ADTR-G1 requirements.
6.How does Aetrix verify that AS7808ADTR-G1 is sourced from the original manufacturer or authorized distributors?
All AS7808ADTR-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 AS7808ADTR-G1 meets industry standards.
7.What is the process for return or replacement of AS7808ADTR-G1?
All AS7808ADTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AS7808ADTR-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 AS7808ADTR-G1 part is unused and in its original packaging.
Return procedure for AS7808ADTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AS7808ADTR-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
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
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…
