My Inquiry
My Account
Diodes Incorporated AP1117EG-13
- Part No.:
- AP1117EG-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
AP1117EG-13.pdf
- Description:
- IC REG LINEAR POS ADJ 1A SOT223
- Quantity:
- Payment:
- Shipping:
Inventory:4,694
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP1117EG-13 from Diodes Incorporated is a 1A low-dropout linear regulator in fixed 3.3V output mode, housed in a SOT223 package. It delivers stable voltage regulation with ≤1.4V dropout at full load, supports 6.4–18V input range, and features built-in thermal shutdown and current limiting - designed for PC peripherals, VGA cards, and 3.3V logic supply in industrial-grade applications.
For engineers reviewing the AP1117EG-13 datasheet, AP1117EG-13 pinout, AP1117EG-13 application, or AP1117EG-13 equivalent, key selection criteria include dropout voltage at 1A load, thermal resistance (θJA = 107°C/W), output stability with MLCC capacitors, and industrial temperature range (−40°C to +125°C).
Technical Context
The AP1117EG-13 implements a bandgap-referenced error amplifier driving a PNP pass transistor, enabling precise 3.3V output regulation across load (0–1A) and line (4.8–12V) variations. Its internal thermal shutdown activates at ~150°C junction temperature, and current limiting protects against short-circuit conditions without external components.
Designed for surface-mount use on FR-4 PCBs, it requires ≥4.7µF ceramic or tantalum output capacitance (ESR ≤0.5Ω) placed within 10mm of pins 2 and 3. The SOT223 thermal tab (pin 2/VOUT) serves as both output terminal and primary heat path, with θJC = 15°C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±2% (3.235–3.365V at 10mA, 25°C), stable under load transients |
| Dropout Voltage | ≤1.4V at 1A load (ΔVOUT = 1% VOUT), enabling 4.7V min input for regulated 3.3V output |
| Input Voltage Range | 4.8V to 12V (for 3.3V output), with absolute max VIN = 18V |
| Thermal Resistance | θJA = 107°C/W (2oz Cu, 5mm×5mm pad, no airflow), θJC = 15°C/W to thermal tab |
| Output Capacitor Requirement | Min 4.7µF ceramic X7R or solid tantalum (ESR ≤0.5Ω); MLCC-compatible, Y5V prohibited |
| Junction Temperature Range | −40°C to +125°C (industrial grade), with thermal shutdown at ~150°C |
| Load Regulation | ≤33mV over 0–1A load (VIN = 5V, 25°C), critical for bus termination stability |
Pinout & Package
SOT223 package: 3-pin surface-mount device with exposed thermal tab electrically connected to pin 2 (VOUT). Tab must be soldered to ≥5mm×5mm copper area for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Adj/GND) | Reference/ground node | Ground connection for fixed-mode operation; tied to GND - not adjustable |
| 2 (VOUT) | Regulated output | Main power output and thermal tab; requires ≥4.7µF capacitor to ground within 10mm trace length |
| 3 (VIN) | Unregulated input | Accepts 4.8–12V input; must remain ≥1.3V above VOUT to maintain regulation |
Key Features
| Feature | Design Value |
|---|---|
| 1.4V max dropout at 1A | Enables efficient 3.3V generation from 4.7V–12V sources, reducing power loss vs. legacy 1117 variants |
| MLCC-compatible stability | Supports low-ESR ceramic capacitors (X7R), eliminating need for bulkier tantalum or electrolytic types |
| Industrial temperature range | Rated for −40°C to +125°C operation, suitable for embedded systems in harsh environments |
| Built-in protection | Integrated current limiting and thermal shutdown prevent damage during overload or poor heatsinking |
| Lead-free & halogen-free | RoHS-compliant SOT223 package with <900ppm Br/Cl and <1000ppm Sb - meets "Green" definition |
Applications
| PC Peripheral Power | VGA Card Voltage Supply |
|---|---|
|
Use Scenario: Providing clean 3.3V rail to USB hubs, card readers, and SATA controllers on motherboard add-on cards. IC Role / Device Role / Timing Role: Primary LDO regulator delivering stable, low-noise power to digital interface ICs. Use Value: Low dropout ensures regulation even when host 5V rail sags under peak load; fast transient response prevents logic glitches. |
Use Scenario: Supplying 3.3V to GPU memory buffers and display controller logic on discrete graphics cards. IC Role / Device Role / Timing Role: Fixed-output voltage regulator for high-speed parallel bus interfaces requiring tight voltage tolerance. Use Value: ≤33mV load regulation maintains signal integrity across 0–1A dynamic current swings during pixel rendering bursts. |
| Industrial Communication Module | Consumer Set-Top Box Logic |
|
Use Scenario: Powering RS-485 transceivers and microcontroller peripherals in factory automation gateways. IC Role / Device Role / Timing Role: Local point-of-load regulator converting 12V system rail to 3.3V for isolated communication ICs. Use Value: −40°C to +125°C rating ensures reliability in unventilated enclosures; thermal shutdown prevents field failures. |
Use Scenario: Generating 3.3V for SoC I/O banks and HDMI PHY circuitry in cable/satellite receiver boxes. IC Role / Device Role / Timing Role: Secondary regulator downstream of DC-DC converter, filtering switching noise for sensitive analog/digital blocks. Use Value: 70dB ripple rejection at 180Hz suppresses low-frequency switching artifacts from upstream converters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP1117E33G-13 | Same Diodes part number variant; identical electrical specs and SOT223 package, but marked with different date code/packaging suffix | No functional difference; same industrial temp range and 3.3V output | Select based on current inventory availability and reel quantity preference (both 2500/reel) |
| TLV1117-33CDCYR | Texas Instruments part; 1A, 3.3V fixed, but higher dropout (1.2V typ @ 1A) and narrower input range (4.75–15V) | Lacks guaranteed −40°C operation; rated only 0°C to +125°C (commercial grade) | Use only if industrial temp range is not required; verify thermal design with θJA = 120°C/W (DDPAK) |
Compared with AP1117EG-13, AP1117E33G-13 offers identical performance and qualification, while TLV1117-33CDCYR trades industrial temperature support for marginally lower dropout - making AP1117EG-13 preferable for ruggedized embedded designs.
Availability
AP1117EG-13 is available at Aetrix Electronics and suitable for PC peripheral power, VGA card voltage supply, and industrial communication modules requiring stable component supply with industrial temperature assurance and RoHS compliance.
Supply support for AP1117EG-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 high-reliability power management, signal integrity, and protection solutions for industrial and computing markets.
The AP1117 series belongs to Diodes' precision LDO regulator product line, engineered specifically for low-noise, high-stability local regulation in space-constrained PCB layouts with demanding thermal and EMI requirements.
FAQ
Is AP1117EG-13 pin-compatible with standard LM1117-3.3 regulators?
Yes - AP1117EG-13 uses the same SOT223 pinout (VIN–VOUT–GND) and shares mechanical and electrical compatibility with industry-standard 1117-family LDOs. However, it improves upon legacy parts with lower dropout, enhanced thermal shutdown accuracy, and guaranteed industrial temperature operation.
What is the minimum output capacitance required for stability?
The AP1117EG-13 requires a minimum 4.7µF ceramic (X7R) or solid tantalum capacitor at the VOUT pin, with ESR between 0.15Ω and 0.5Ω. Aluminum electrolytic capacitors require ≥47µF and should be paralleled with a 1µF MLCC for optimal transient response.
Can AP1117EG-13 be used with a 24V input?
No - the absolute maximum input voltage is 18V. Applying 24V exceeds this rating and risks permanent damage. For 24V systems, a pre-regulator stage (e.g., buck converter) must reduce voltage to ≤18V before feeding AP1117EG-13.
Does AP1117EG-13 support adjustable output configurations?
No - the "EG" suffix denotes fixed 3.3V output. Adjustable versions use "ADJ" in the part number (e.g., AP1117EG-ADJ). Pin 1 (Adj/GND) is internally connected to ground in fixed-mode parts and must not be used as an adjustment node.
AP1117EG-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-261-4, TO-261AA
- 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-223-3
AP1117EG-13 FAQ
1.How can I place an order for AP1117EG-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1117EG-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 AP1117EG-13 reliable?
The price and inventory of AP1117EG-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1117EG-13 is usually 5 days.
3.What payment methods are accepted for AP1117EG-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1117EG-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1117EG-13?
AP1117EG-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1117EG-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 AP1117EG-13?
For technical support, including AP1117EG-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1117EG-13 requirements.
6.How does Aetrix verify that AP1117EG-13 is sourced from the original manufacturer or authorized distributors?
All AP1117EG-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 AP1117EG-13 meets industry standards.
7.What is the process for return or replacement of AP1117EG-13?
All AP1117EG-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1117EG-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 AP1117EG-13 part is unused and in its original packaging.
Return procedure for AP1117EG-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP1117EG-13 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 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…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
