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Diodes Incorporated AP1117YG-13-ZT
- Part No.:
- AP1117YG-13-ZT
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-243AA
- Datasheet:
-
AP1117YG-13-ZT.pdf
- Description:
- IC REG LINEAR POS ADJ 1A SOT89-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,730
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Product details
Overview
AP1117YG-13-ZT from Diodes Incorporated is a 1A low-dropout positive fixed-mode linear regulator in SOT89-3L package, delivering a stable 3.3V output with ≤1.4V dropout at full load, ±1% load regulation (33mV), and 70dB ripple rejection at 180Hz - designed for high-speed bus termination and low-current 3.3V logic supply in PC peripherals and VGA cards.
For engineers reviewing the AP1117YG-13-ZT datasheet, AP1117YG-13-ZT pinout, AP1117YG-13-ZT application, or AP1117YG-13-ZT equivalent, key selection criteria include dropout voltage under 1.4V at 1A, thermal shutdown protection, adjustable/fixed 3.3V output capability, SOT89-3L thermal resistance (θJA = 164°C/W), and RoHS-compliant green molding compound.
Technical Context
The AP1117YG-13-ZT implements a bandgap-referenced error amplifier driving an NPN pass transistor, enabling fast transient response to load steps and stable operation with 10µF output capacitance (ESR 0.15–20Ω). Its internal current limiting and thermal shutdown circuitry activate at ≥150°C junction temperature and ≥1.1A output current.
It operates across 0–125°C junction temperature range with input voltage from 4.8V to 12V for 3.3V output regulation, requiring VIN ≥ VOUT + 1.3V to maintain regulation. The device supports both fixed 3.3V output (no external resistors) and adjustable mode via ADJ pin when configured as AP1117-ADJ variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±1% (3.235–3.365V at 10mA, 25°C) |
| Dropout Voltage | ≤1.4V at 1A load (ensures regulation down to VIN = 4.7V) |
| Load Regulation | 26–33mV over 0–1A (critical for stable logic rail under dynamic load) |
| Ripple Rejection | 70dB at 180Hz with 25µF tantalum output cap (suppresses switching noise) |
| Thermal Shutdown | Activates at ~150°C junction temperature (self-protects during overload) |
| Current Limit | 1.1A minimum (prevents damage during short-circuit or heavy transient) |
| Reference Voltage | 1.25V typical (used internally for feedback loop stability in fixed/adjustable modes) |
Pinout & Package
SOT89-3L package with exposed thermal tab connected to VOUT pin; compact 4.5mm × 2.5mm footprint optimized for space-constrained PCB layouts and moderate power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Adj/GND) | Ground reference (fixed mode) or feedback adjust node (adjustable mode) | In AP1117YG-13-ZT, this pin is internally tied to GND - no external resistor required for 3.3V output |
| 2 (VOUT) | Regulated output terminal | Connected to thermal tab; requires ≥10µF capacitor (0.15–20Ω ESR) to ground for stability |
| 3 (VIN) | Unregulated input supply | Must be ≥1.3V above VOUT; large bulk capacitor recommended to prevent sag during transients |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout voltage | 1.4V max at 1A enables use with 5V input for clean 3.3V rail in legacy systems |
| Fast transient response | Stabilizes within microseconds after 100mA–1A load step (Cin=1µF, Cout=10µF) |
| Built-in thermal shutdown | Auto-recovers after die cools below ~140°C - eliminates need for external thermal monitoring |
| Good noise rejection | 70dB ripple suppression at 180Hz reduces coupling of SMPS noise into sensitive analog/digital circuits |
| Lead-free & RoHS compliant | Green molding compound (no Br/Sb) meets EU Directive 2002/95/EC exemptions |
Applications
| PC Peripheral Power | VGA Card Logic Supply |
|---|---|
|
Use Scenario: Providing clean 3.3V rail to USB controller, SATA bridge, or PCIe endpoint ICs on add-in cards. IC Role / Device Role / Timing Role: Primary local LDO for I/O voltage domain, decoupling upstream DC/DC converter ripple. Use Value: 1.4V dropout allows direct regulation from 5V bus without intermediate buck stage; 33mV load regulation ensures signal integrity across hot-plug events. |
Use Scenario: Powering 3.3V digital logic (RAMDAC, timing controller, display interface) on discrete graphics cards. IC Role / Device Role / Timing Role: Fixed-output LDO supplying stable core voltage to video timing and pixel processing blocks. Use Value: Fast transient response maintains voltage within ±2% during GPU memory burst access; thermal shutdown prevents failure during thermal throttling. |
| High-Speed Bus Termination | Industrial Control I/O Module |
|
Use Scenario: Biasing parallel termination resistors on LVDS, PCI-X, or AGP buses where precise 3.3V reference is required. IC Role / Device Role / Timing Role: Precision voltage source for termination network, minimizing skew and reflection. Use Value: 1% output tolerance and 70dB ripple rejection ensure <10mV noise on termination rail - critical for signal eye margin. |
Use Scenario: Powering isolated digital I/O drivers and microcontroller peripherals in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Secondary regulated supply for field-side logic, independent of main system rail. Use Value: Thermal shutdown and current limiting enable reliable operation in unventilated enclosures; SOT89-3L allows manual rework and conformal coating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC29302-3.3WT | 3A output, 350mV dropout, TO220-5 package, higher quiescent current (30mA) | Higher current headroom but larger footprint and lower PSRR (55dB) | Select when >1A load or lower dropout is required; avoid if board space or noise sensitivity is constrained. |
| TLV1117-33CDCYR | 800mA output, 1.2V dropout, SOT223-3 package, 65dB PSRR, wider temp range (−40°C to 125°C) | Lower current rating and reduced thermal robustness (θJA = 107°C/W) | Prefer for cost-sensitive, lower-power designs where 1A peak is not needed and extended temperature is mandatory. |
Compared with MIC29302-3.3WT and TLV1117-33CDCYR, the AP1117YG-13-ZT delivers optimal balance of 1A capability, 1.4V dropout, 70dB PSRR, and SOT89-3L thermal performance - making it ideal for space-limited 3.3V logic rails where reliability under transient load is critical.
Availability
AP1117YG-13-ZT is available at Aetrix Electronics and suitable for PC peripheral design, VGA card manufacturing, high-speed bus termination, and industrial I/O module development requiring stable component supply and long-term production continuity.
Supply support for AP1117YG-13-ZT 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 consumer markets.
The AP1117 product line targets cost-effective, thermally robust LDO regulation for legacy and mixed-voltage systems - emphasizing dropout performance, transient stability, and RoHS-compliant packaging for mainstream embedded applications.
FAQ
What is the maximum input voltage for AP1117YG-13-ZT?
The absolute maximum DC supply voltage is 18V, but the recommended operating range for 3.3V output is 4.8V to 12V. Exceeding 12V increases power dissipation and thermal stress without functional benefit, and operation above 18V risks permanent damage per Absolute Maximum Ratings.
Can AP1117YG-13-ZT be used in adjustable mode?
No - AP1117YG-13-ZT is a fixed 3.3V output variant. The "Y" in the part number denotes SOT89-3L package, and "G" indicates green RoHS-compliant finish; the "-13-ZT" suffix confirms tape-and-reel packaging. Adjustable versions use "ADJ" in marking (e.g., DA) and require external resistors on the ADJ pin.
Is an input capacitor required for stable operation?
Yes - although not strictly mandatory for basic regulation, a minimum 1µF ceramic input capacitor placed near the VIN pin is recommended to suppress high-frequency noise and prevent oscillation during fast load transients, as confirmed by typical performance curves in the datasheet.
What is the thermal resistance of AP1117YG-13-ZT in SOT89-3L?
The junction-to-ambient thermal resistance (θJA) is 164°C/W under standard test conditions (FR-4 board, 2oz copper, no airflow, minimum pad layout). This value assumes proper thermal pad connection to PCB copper; actual performance improves with larger copper areas or thermal vias.
AP1117YG-13-ZT 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:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 1.25V
- Voltage - Output (Max):
- 5V
- Voltage Dropout (Max):
- 1.4V @ 1A
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 10 mA
- Current - Supply (Max):
- -
- PSRR:
- 60dB (180Hz)
- 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
AP1117YG-13-ZT FAQ
1.How can I place an order for AP1117YG-13-ZT through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1117YG-13-ZT 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 AP1117YG-13-ZT reliable?
The price and inventory of AP1117YG-13-ZT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1117YG-13-ZT is usually 5 days.
3.What payment methods are accepted for AP1117YG-13-ZT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1117YG-13-ZT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1117YG-13-ZT?
AP1117YG-13-ZT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1117YG-13-ZT 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 AP1117YG-13-ZT?
For technical support, including AP1117YG-13-ZT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1117YG-13-ZT requirements.
6.How does Aetrix verify that AP1117YG-13-ZT is sourced from the original manufacturer or authorized distributors?
All AP1117YG-13-ZT 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 AP1117YG-13-ZT meets industry standards.
7.What is the process for return or replacement of AP1117YG-13-ZT?
All AP1117YG-13-ZT units undergo pre-shipment inspection (PSI). If there is an issue with AP1117YG-13-ZT, 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 AP1117YG-13-ZT part is unused and in its original packaging.
Return procedure for AP1117YG-13-ZT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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