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Diodes Incorporated AP1117Y33G-13
- Part No.:
- AP1117Y33G-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-243AA
- Datasheet:
-
AP1117Y33G-13.pdf
- Description:
- IC REG LINEAR 3.3V 1A SOT89-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,415
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Product details
Overview
AP1117Y33G-13 from Diodes Incorporated is a 3.3V fixed-output, 1A low-dropout linear regulator in SOT89-3 package, featuring 1.4V max dropout at full load, ±2% output voltage accuracy (3.235–3.365V), and guaranteed operation from 0°C to +125°C junction temperature. It delivers stable 3.3V supply for high-speed bus termination, PC peripherals, and VGA card logic rails with input range 4.8–12V.
For engineers reviewing the AP1117Y33G-13 datasheet, AP1117Y33G-13 pinout, AP1117Y33G-13 application, or AP1117Y33G-13 equivalent, key selection criteria include dropout voltage at 1A, thermal resistance (θJA = 164°C/W in SOT89-3), minimum 4.7µF ceramic output capacitance requirement, and fixed 3.3V output without external feedback resistors.
Technical Context
The AP1117Y33G-13 integrates an internal 1.25V reference, error amplifier, current-limit protection, and thermal shutdown circuitry. Its fixed 3.3V output eliminates external resistor networks, simplifying layout while maintaining regulation across 0–1A load current and 4.8–12V input.
Designed for low-noise, low-ESR capacitor compatibility, it supports MLCC (X7R) and solid tantalum output capacitors with ESR ≤0.5Ω. Fast transient response is enabled by internal compensation optimized for 4.7µF output capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3V ±2% (3.235–3.365V); fixed-mode eliminates external feedback components |
| Max Dropout Voltage | 1.4V at 1A load; enables regulation with only 4.7V input for 3.3V output |
| Output Current | 1A continuous; includes internal current limiting to protect against short-circuit faults |
| Input Voltage Range | 4.8V to 12V; minimum 1.3V headroom above VOUT required for regulation |
| Thermal Shutdown | Activates at ~150°C junction temperature; auto-recovery upon cooling ensures fault resilience |
| Output Capacitor | Min 4.7µF ceramic (X7R) or solid tantalum; ESR ≤0.5Ω required for stability |
| Load Regulation | ≤33mV (0–1A); ensures <1% output deviation under full dynamic load swing |
| Junction Temp Range | 0°C to +125°C; commercial-grade rating suitable for PC peripheral and consumer equipment |
Pinout & Package
SOT89-3 package with exposed thermal tab connected to VOUT for enhanced heat dissipation; compact 4.5×2.5mm footprint ideal for space-constrained PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Adj (GND) | Ground terminal for fixed-mode operation; no external connection required |
| 2 | VOUT | Regulated 3.3V output; thermal tab is electrically connected to this pin |
| 3 | VIN | Input supply (4.8–12V); requires ≥4.7µF decoupling capacitor to ground |
Key Features
| Feature | Design Value |
|---|---|
| Low Dropout | 1.4V max at 1A enables efficient 3.3V generation from 5V or 6V rails |
| Fast Transient Response | Stabilizes within microseconds during load steps; critical for digital logic supply integrity |
| Built-in Thermal Shutdown | Protects device during overload or poor heatsinking; self-recovering behavior avoids latch-up |
| MLCC-Compatible Compensation | Stable with X7R ceramic capacitors (not Y5V); reduces BOM cost vs. tantalum alternatives |
| Lead-Free & Halogen-Free | RoHS-compliant (no Br/Sb); meets IPC-1752A material declaration requirements |
Applications
| PC Peripheral Power | VGA Card Logic Supply |
|---|---|
Use Scenario: Providing clean 3.3V rail to USB hub controllers, SATA bridge ICs, and PCIe endpoint regulators in desktop add-in cards. IC Role / Device Role / Timing Role: Primary LDO supplying core logic voltage to interface ICs requiring tight regulation and low noise. Use Value: 1.4V dropout allows direct use of 5V system rail without intermediate buck conversion, reducing component count and board area. | Use Scenario: Delivering stable 3.3V to GPU memory I/O buffers and display controller logic on discrete graphics cards. IC Role / Device Role / Timing Role: Fixed-output LDO ensuring voltage integrity for high-speed parallel data paths between GPU and VRAM. Use Value: Load regulation ≤33mV prevents timing margin loss during GPU burst loads, preserving signal integrity on 3.3V DDR interfaces. |
| Communication Module Bias | Consumer Equipment Logic Rail |
Use Scenario: Powering baseband processors and RF transceiver bias circuits in Wi-Fi/Bluetooth modules embedded in routers and IoT gateways. IC Role / Device Role / Timing Role: Local point-of-load regulator isolating sensitive analog/RF sections from noisy digital supply domains. Use Value: 70dB ripple rejection at 180Hz suppresses switching noise from upstream DC/DC converters, preventing RF desensitization. | Use Scenario: Supplying 3.3V to microcontrollers, touch controllers, and audio codecs in smart TVs, set-top boxes, and streaming devices. IC Role / Device Role / Timing Role: Main logic rail regulator supporting mixed-signal SoCs with real-time processing and low-power sleep modes. Use Value: Thermal shutdown and current limiting ensure robustness against capacitor aging or accidental shorts in unattended consumer deployments. |
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 |
|---|---|---|---|
| LD1117S33TR | Higher dropout (1.5V typ at 1A); 0.5% tighter initial accuracy (±1%) | Requires ≥4.8V input for same 3.3V output; better for precision analog bias | Select if tighter initial tolerance outweighs efficiency loss from higher dropout |
| TLV1117-33CDCYR | Lower quiescent current (6mA vs 10mA); wider temp range (−40°C to +125°C) | Industrial-grade operation; better suited for outdoor or automotive-adjacent environments | Choose for extended temperature reliability where ambient exceeds +85°C |
Compared with LD1117S33TR and TLV1117-33CDCYR, AP1117Y33G-13 offers lower dropout for higher efficiency in 5V-input systems, commercial-temp suitability for cost-sensitive consumer designs, and SOT89-3 thermal performance optimized for moderate-power applications without heatsinks.
Availability
AP1117Y33G-13 is available at Aetrix Electronics and suitable for PC peripheral power, VGA card logic supply, and consumer equipment logic rails requiring stable component supply, RoHS compliance, and lead-free assembly compatibility.
Supply support for AP1117Y33G-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 semiconductor manufacturer specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and connectivity applications.
The AP1117 series belongs to Diodes' standard linear regulator product line, designed specifically for cost-effective, high-reliability 1A LDO applications in computing, communications, and consumer electronics.
FAQ
What is the minimum input voltage required for AP1117Y33G-13 to regulate at 3.3V?
The minimum input voltage is 4.7V - derived from the 1.4V maximum dropout voltage plus the 3.3V nominal output. The datasheet specifies 4.8V minimum for test conditions, but regulation is guaranteed down to VIN = VOUT + 1.4V across temperature and load. Below this, output voltage drops linearly with input.
Can AP1117Y33G-13 be used with ceramic capacitors?
Yes - it is explicitly qualified for MLCC (X7R dielectric) output capacitors of ≥4.7µF with ESR ≤0.5Ω. The device's internal compensation ensures stability with low-ESR ceramics, unlike legacy '1117 regulators that require higher-ESR tantalum or aluminum electrolytic capacitors.
Does AP1117Y33G-13 require an external resistor network for 3.3V output?
No - the "33" suffix indicates fixed 3.3V output mode. Pin 1 (Adj/GND) is internally connected to ground, eliminating external feedback resistors. This simplifies layout, improves accuracy over adjustable versions, and removes resistor tolerance errors from the output voltage.
How does thermal performance differ between SOT89-3 and SOT223 packages for AP1117?
SOT89-3 has θJA = 164°C/W (FR-4, 2oz Cu), while SOT223 achieves 107°C/W under identical conditions. The SOT89-3's smaller pad area limits heat spreading, making it suitable for ≤0.5W continuous dissipation without heatsinking; SOT223 supports up to ~0.8W in the same environment.
AP1117Y33G-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):
- 3.3V
- Voltage - Output (Max):
- -
- 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
AP1117Y33G-13 FAQ
1.How can I place an order for AP1117Y33G-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1117Y33G-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 AP1117Y33G-13 reliable?
The price and inventory of AP1117Y33G-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1117Y33G-13 is usually 5 days.
3.What payment methods are accepted for AP1117Y33G-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1117Y33G-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1117Y33G-13?
AP1117Y33G-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1117Y33G-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 AP1117Y33G-13?
For technical support, including AP1117Y33G-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1117Y33G-13 requirements.
6.How does Aetrix verify that AP1117Y33G-13 is sourced from the original manufacturer or authorized distributors?
All AP1117Y33G-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 AP1117Y33G-13 meets industry standards.
7.What is the process for return or replacement of AP1117Y33G-13?
All AP1117Y33G-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1117Y33G-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 AP1117Y33G-13 part is unused and in its original packaging.
Return procedure for AP1117Y33G-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP1117Y33G-13 Tags
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