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Diodes Incorporated AP1117DL-13
- Part No.:
- AP1117DL-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
AP1117DL-13.pdf
- Description:
- IC REG LDO 1.0A ADJ VOLT TO-252
- Quantity:
- Payment:
- Shipping:
Inventory:4,709
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Product details
Overview
AP1117DL-13 from Diodes Incorporated is a 1A low-dropout linear regulator in TO252 (DPAK) package, configured for fixed 3.3V output. It delivers stable voltage regulation with ≤1.4V dropout at full load, supports input voltages from 4.8V to 12V, and operates across 0°C to +125°C junction temperature. It is used in PC peripherals and communication equipment requiring compact, thermally robust 3.3V supply rails.
For engineers reviewing the AP1117DL-13 datasheet, AP1117DL-13 pinout, AP1117DL-13 application, or AP1117DL-13 equivalent, key selection factors include guaranteed 1.4V max dropout at 1A, thermal shutdown protection, 3.3V ±1% output tolerance at 10mA, compatibility with MLCC output capacitors (≥4.7µF, ESR <0.5Ω), and TO252 thermal performance (θJA = 73°C/W on 2oz copper).
Technical Context
The AP1117DL-13 integrates a precision 1.25V reference, error amplifier, current-limit circuitry, and thermal shutdown into a single silicon die. Its internal architecture enables fast transient response and stable operation with ceramic output capacitors - a key improvement over legacy 1117 regulators.
It operates in fixed-mode only (no external resistor divider required), with VIN ≥ VOUT + 1.3V for regulation. The TO252 package features a thermally enhanced tab connected internally to VOUT, enabling PCB copper area to serve as primary heat sink.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.300 V ±1% at 10mA, 4.8V–12V input - ensures logic-level compliance for 3.3V systems |
| Dropout Voltage | 1.4 V max at 1A load - enables operation from 4.7V input while maintaining regulation |
| Load Regulation | 26–33 mV over 0–1A load - limits output deviation under dynamic current demand |
| Line Regulation | 0.2 % over input range - minimizes sensitivity to upstream supply ripple or sag |
| Thermal Shutdown | Activates at ~150°C junction - prevents permanent damage during overload or poor heatsinking |
| Output Capacitor | 4.7 µF ceramic (X7R) or solid tantalum, ESR ≤0.5Ω - enables stability without electrolytic bulk |
| Junction Temp Range | 0°C to +125°C - qualifies for commercial-grade embedded and peripheral applications |
Pinout & Package
AP1117DL-13 uses the TO252-3 (DPAK) surface-mount package with exposed thermal tab electrically connected to VOUT. The package measures 6.10 mm × 6.58 mm × 2.29 mm and is lead-free and halogen-free ("Green").
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Input supply connection | Must be ≥4.7V to sustain 3.3V output; requires ≥4.7µF low-ESR input capacitor |
| 2 (VOUT) | Regulated output node | Connected to thermal tab; supplies load and serves as reference for feedback in adjustable variants |
| 3 (Adj/GND) | Ground reference terminal | Fixed-mode pin tied internally to ground - no external resistor network needed |
Key Features
| Feature | Design Value |
|---|---|
| Fast transient response | Stabilizes within microseconds after 100mA–1A load steps - reduces need for large bulk capacitance |
| Built-in current limiting | 1.1 A typical current limit - protects against short-circuit without external foldback circuitry |
| MLCC-compatible compensation | Stable with X7R ceramic capacitors ≥4.7µF - eliminates ESR dependency and improves reliability vs. tantalum |
| Lead-free & "Green" construction | RoHS-compliant, Br/Cl <900ppm, Sb <1000ppm - meets global environmental compliance requirements |
| Thermal resistance (θJA) | 73°C/W on 2oz FR-4 with 5mm×5mm pad - enables 1W+ continuous dissipation without external heatsink |
Applications
| PC Peripheral Power | USB Hub Supply |
|---|---|
|
Use Scenario: Providing clean 3.3V rail to USB controller ICs and level-shifting transceivers on add-in cards. IC Role / Device Role / Timing Role: Primary local LDO supplying core logic voltage for USB 2.0 PHY and hub controller. Use Value: Low dropout allows use of 5V bus-derived input; thermal robustness supports dense board layouts without airflow. |
Use Scenario: Regulating 3.3V for USB enumeration logic and port power management in self-powered hubs. IC Role / Device Role / Timing Role: Fixed-output voltage source ensuring stable VDD for USB descriptor handling and port enable sequencing. Use Value: Tight 3.3V tolerance (±1%) guarantees USB specification compliance; fast load step response prevents enumeration failure. |
| VGA Card Core Logic | Industrial Communication Module |
|
Use Scenario: Delivering 3.3V to VGA DACs, timing controllers, and I²C configuration interfaces. IC Role / Device Role / Timing Role: Local point-of-load regulator decoupling analog and digital sections of display interface circuitry. Use Value: Good noise rejection (>60dB at 180Hz) suppresses switching noise from adjacent DC-DC converters. |
Use Scenario: Powering RS-485 transceivers and microcontroller peripherals in DIN-rail mounted gateways. IC Role / Device Role / Timing Role: Stable bias supply for half-duplex transceiver ICs operating in noisy industrial environments. Use Value: Thermal shutdown and current limit protect against bus fault conditions; wide input range accommodates unregulated 5–12V field wiring. |
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 |
|---|---|---|---|
| AMS1117-3.3 | Higher dropout (1.3V typ at 800mA), wider output tolerance (±2%), no MLCC guarantee | Limited to less demanding consumer applications; not qualified for sustained 1A loads near thermal limits | Choose only if cost sensitivity outweighs thermal margin and stability assurance |
| LD1117S33TR | Same 1A rating but higher θJA (100°C/W in SOT223), lower PSRR (55dB), no Green certification | Suitable for space-constrained designs where TO252 footprint is unavailable, but requires larger copper area | Select when SOT223 mounting is mandatory and RoHS/halogen compliance is secondary |
Compared with AMS1117-3.3 and LD1117S33TR, AP1117DL-13 offers superior thermal performance in TO252, tighter output accuracy, guaranteed MLCC stability, and full environmental compliance - making it preferred for industrial and high-reliability 3.3V point-of-load regulation.
Availability
AP1117DL-13 is available at Aetrix Electronics and suitable for PC peripheral design, USB device power management, and industrial communication modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for AP1117DL-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' high-reliability linear regulator product line, designed specifically for stable, low-noise, thermally robust voltage regulation in space-constrained embedded systems and peripheral interfaces.
FAQ
Is AP1117DL-13 pin-compatible with other 1117-family regulators in TO252?
Yes - AP1117DL-13 uses standard TO252-3 pinout (VIN-VOUT-GND) and matches the footprint and thermal tab connection of industry-standard 1117 regulators. No PCB redesign is needed for drop-in replacement, though layout optimization for thermal performance is recommended per Diodes' AP02001 pad guidelines.
What is the minimum input voltage required for stable 3.3V output at 1A?
The datasheet specifies a maximum dropout voltage of 1.4V at 1A. Therefore, VIN must be ≥4.7V (3.3V + 1.4V) to maintain regulation. At lower inputs, output voltage sags proportionally; operation below 4.7V is unsupported for full-load 3.3V regulation.
Can AP1117DL-13 use ceramic capacitors exclusively, or is tantalum required?
AP1117DL-13 is explicitly characterized and guaranteed stable with 4.7µF X7R ceramic capacitors (ESR ≤0.5Ω). Tantalum is optional - ceramic-only designs reduce size, cost, and failure risk. Y5V dielectrics are prohibited due to capacitance drift.
Does AP1117DL-13 require an external resistor network for 3.3V operation?
No - the "L" suffix denotes fixed 3.3V output. Pin 3 (Adj/GND) is internally connected to ground; no external resistors are needed. This simplifies layout and eliminates trimming errors or drift associated with adjustable configurations.
AP1117DL-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Cut Tape (CT)
- 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:
- TO-252-3
AP1117DL-13 FAQ
1.How can I place an order for AP1117DL-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1117DL-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 AP1117DL-13 reliable?
The price and inventory of AP1117DL-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1117DL-13 is usually 5 days.
3.What payment methods are accepted for AP1117DL-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1117DL-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1117DL-13?
AP1117DL-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1117DL-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 AP1117DL-13?
For technical support, including AP1117DL-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1117DL-13 requirements.
6.How does Aetrix verify that AP1117DL-13 is sourced from the original manufacturer or authorized distributors?
All AP1117DL-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 AP1117DL-13 meets industry standards.
7.What is the process for return or replacement of AP1117DL-13?
All AP1117DL-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1117DL-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 AP1117DL-13 part is unused and in its original packaging.
Return procedure for AP1117DL-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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