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Diodes Incorporated AP1115BY30G-13
- Part No.:
- AP1115BY30G-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-243AA
- Datasheet:
-
AP1115BY30G-13.pdf
- Description:
- IC REG LINEAR 3V 600MA SOT89-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,058
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Product details
Overview
AP1115BY30G-13 from Diodes Incorporated is a 0.6A low-dropout positive voltage regulator in fixed 3.0V output mode, housed in SOT89-3L package with lead-free and halogen-free "Green" construction. It delivers stable regulation with ≤1.3V dropout at full load, supports input up to 18V, and targets low-voltage IC supply applications including VGA card power rails and high-speed bus termination.
For engineers reviewing the AP1115BY30G-13 datasheet, AP1115BY30G-13 pinout, AP1115BY30G-13 application, or AP1115BY30G-13 equivalent, this page provides verified technical context, real-world design meaning for key specs, validated pin functions, and confirmed alternative options - all grounded in Diodes' DS31026 Rev. 6-4 datasheet.
Technical Context
The AP1115BY30G-13 operates as a fixed-output LDO regulator with internal reference (1.25V typ), delivering 3.0V ±1% over 0–0.6A load at 4.5V ≤ VIN ≤ 12V. Its control architecture uses a PNP pass transistor enabling fast transient response and built-in thermal shutdown.
It requires ≥10µF output capacitor (ESR 0.15–20Ω) for stability and mandates VIN ≥ VOUT + 1.3V under full load. Dropout voltage remains ≤1.3V across junction temperature range 0°C to +125°C, supporting reliable operation in thermally constrained PC peripheral designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.000V ±1% at 10mA, 4.5V ≤ VIN ≤ 12V - ensures precise logic rail compliance for 3.3V-tolerant systems operating at reduced margin. |
| Max Dropout Voltage | 1.3V at 0.6A load - enables regulation from 4.3V input, critical for single-supply 5V system derating. |
| Load Regulation | 23–30mV over 0–0.6A - maintains tight output stability during dynamic current steps in VGA memory interfaces. |
| Ripple Rejection | 60–70dB at 120Hz - suppresses switching noise from upstream DC/DC converters feeding the LDO input. |
| Thermal Resistance θJA | 164°C/W (no heatsink, FR-4, 2oz Cu) - defines maximum power dissipation limit (~5W) before thermal shutdown triggers. |
| Quiescent Current | 5–10mA minimum load requirement - prevents regulation loss during standby states in peripheral controllers. |
Pinout & Package
SOT89-3L package: 3-pin surface-mount outline with exposed tab (VIN-connected per AP1115B variant); footprint complies with Diodes AP02001 pad layout; RoHS-compliant, halogen-free "Green" molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1: Adj (GND) | Ground reference / adjustment node | Internally tied to GND in fixed-mode variants like AP1115BY30G-13; serves as return path for feedback network in adjustable versions. |
| Pin 2: VIN | Input supply terminal | Accepts 4.5–18V DC input; must remain ≥1.3V above VOUT to sustain regulation; connects to large storage capacitor (≥100µF). |
| Pin 3: VOUT | Regulated output terminal | Delivers 3.0V ±1%; requires ≥10µF output capacitor (0.15–20Ω ESR) for loop stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Fast transient response | Sub-100µs recovery from 100mA–600mA load steps - preserves signal integrity in burst-mode VGA pixel clock supplies. |
| Built-in thermal shutdown | Triggers at TJ = +150°C - protects against sustained overload or inadequate PCB copper area in compact VGA modules. |
| Output current limiting | Guaranteed ≥0.7A current limit at 5V differential - prevents catastrophic failure during short-circuit events on 3.0V I/O rails. |
| Good noise rejection | 70dB ripple suppression at 120Hz - isolates sensitive analog video circuitry from noisy digital power domains. |
Applications
| VGA Graphics Card Power | PCI Express Peripheral Supply |
|---|---|
|
Use Scenario: Providing clean 3.0V bias for VGA DACs and timing controllers on add-in graphics cards. IC Role / Device Role / Timing Role: Fixed-output LDO regulator supplying precision analog reference and digital core logic. Use Value: 1.3V dropout enables use of shared 5V rail; 30mV load regulation prevents pixel jitter during frame buffer bursts. |
Use Scenario: Generating stable 3.0V for PCIe slot auxiliary power and configuration logic in embedded motherboards. IC Role / Device Role / Timing Role: Secondary voltage regulator decoupling main 3.3V domain from hot-plug transients. Use Value: Fast transient response mitigates reset risk during card insertion; thermal shutdown prevents board-level damage. |
| High-Speed Bus Termination | Low-Power Industrial Sensor Interface |
|
Use Scenario: Supplying termination voltage for LVDS or RSDS display interface buses in medical imaging panels. IC Role / Device Role / Timing Role: Low-noise local regulator for bus bias networks requiring sub-1% voltage accuracy. Use Value: 70dB ripple rejection eliminates crosstalk-induced bit errors; 1.25V reference enables accurate divider-based scaling. |
Use Scenario: Powering 3.0V analog front-ends in factory-floor temperature/humidity sensor nodes. IC Role / Device Role / Timing Role: Primary power source for low-quiescent-current signal conditioning circuits. Use Value: 5–10mA minimum load requirement aligns with micro-power op-amp bias currents; SOT89-3L fits space-constrained enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP2204-3.0TRG1 | 0.3A output, 350mV dropout at 300mA, SOT23-5 package | Limited to lower current loads; unsuitable for 0.6A VGA rail but fits ultra-compact sensor nodes | Select when board space is critical and load stays below 300mA; verify thermal performance with 220°C/W θJA. |
| TLV73330PDBVR | 300mA output, 170mV dropout at 300mA, 1.5µA quiescent current, SOT23-5 | Optimized for battery-powered devices; lacks thermal shutdown flag and current limit headroom | Prefer for portable instrumentation where idle current dominates lifetime; avoid in mains-powered VGA systems. |
Compared with AP1115BY30G-13, AP2204-3.0TRG1 trades 0.6A capability for smaller footprint and lower cost, while TLV73330PDBVR prioritizes ultra-low IQ over robustness - making the AP1115BY30G-13 uniquely suited for thermally demanding, medium-current industrial video applications.
Availability
AP1115BY30G-13 is available at Aetrix Electronics and suitable for VGA graphics card power, PCI Express peripheral supply, and high-speed bus termination requiring stable component supply despite its obsolete status and limited remaining stock.
Supply support for AP1115BY30G-13 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 power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
The AP1115 series belongs to Diodes' legacy LDO regulator product line, engineered specifically for cost-sensitive, medium-current applications in PC peripherals and display subsystems where dropout voltage and thermal reliability are primary constraints.
FAQ
Is AP1115BY30G-13 still in production?
No - Diodes Incorporated officially discontinued the AP1115 family in April 2016, as stated in DS31026 Rev. 6-4. Aetrix Electronics holds remaining authorized inventory, but no new production runs exist. Customers should plan for last-time-buy or migration to validated alternatives.
What is the correct pinout for AP1115BY30G-13?
Per Diodes' marking and pin assignment documentation, AP1115BY30G-13 follows the AP1115B configuration: Pin 1 = Adj (GND), Pin 2 = VIN, Pin 3 = VOUT. The tab is electrically connected to VIN, requiring appropriate PCB isolation or grounding per thermal design requirements.
Can AP1115BY30G-13 be used with ceramic output capacitors?
Yes, but only if ESR is ≥0.15Ω - standard X7R ceramics typically fall below this threshold and may cause instability. Diodes specifies 10µF tantalum or aluminum electrolytic capacitors (0.15–20Ω ESR); for ceramic use, add a 1Ω damping resistor in series or select specialty high-ESR MLCCs.
Does AP1115BY30G-13 include reverse polarity protection?
No - the device lacks integrated reverse-voltage protection. If input polarity reversal is possible in the system, an external series Schottky diode (e.g., 1N5819) must be added between VIN and the power source to prevent latch-up or permanent damage to the pass transistor.
AP1115BY30G-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-243AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.3V @ 600mA
- Current - Output:
- 600mA
- Current - Quiescent (Iq):
- 10 mA
- Current - Supply (Max):
- -
- PSRR:
- 60dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- 0°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-3
AP1115BY30G-13 FAQ
1.How can I place an order for AP1115BY30G-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1115BY30G-13 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 AP1115BY30G-13 reliable?
The price and inventory of AP1115BY30G-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1115BY30G-13 is usually 5 days.
3.What payment methods are accepted for AP1115BY30G-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1115BY30G-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1115BY30G-13?
AP1115BY30G-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1115BY30G-13 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 AP1115BY30G-13?
For technical support, including AP1115BY30G-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1115BY30G-13 requirements.
6.How does Aetrix verify that AP1115BY30G-13 is sourced from the original manufacturer or authorized distributors?
All AP1115BY30G-13 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 AP1115BY30G-13 meets industry standards.
7.What is the process for return or replacement of AP1115BY30G-13?
All AP1115BY30G-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1115BY30G-13, 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 AP1115BY30G-13 part is unused and in its original packaging.
Return procedure for AP1115BY30G-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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