My Inquiry
My Account
Diodes Incorporated AP1117Y25G-13
- Part No.:
- AP1117Y25G-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-243AA
- Datasheet:
-
AP1117Y25G-13.pdf
- Description:
- IC REG LINEAR 2.5V 1A SOT89-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,276
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP1117Y25G-13 from Diodes Incorporated is a 2.5V fixed-output, 1A low-dropout linear regulator in SOT89-3 package, featuring ≤1.4V dropout at full load, 1.25V internal reference, and guaranteed operation from 4V to 12V input. It delivers stable 2.5V supply for logic circuits, VGA cards, and PC peripherals with built-in thermal shutdown and current limiting.
For engineers reviewing the AP1117Y25G-13 datasheet, AP1117Y25G-13 pinout, AP1117Y25G-13 application, or AP1117Y25G-13 equivalent, key selection criteria include dropout voltage at 1A load, output voltage tolerance (±2%), thermal resistance (θJA = 164°C/W), minimum required output capacitance (4.7µF ceramic), and industrial-grade temperature range compatibility.
Technical Context
The AP1117Y25G-13 integrates a precision 1.25V bandgap reference, error amplifier, and PNP pass transistor in a fixed 2.5V configuration. Its feedback network is internal, eliminating external resistors and reducing layout sensitivity.
It employs thermal foldback and current-limit protection that activates before junction temperature exceeds +150°C, with guaranteed regulation over 0°C to +125°C ambient (commercial grade). Dropout behavior is specified at ΔVOUT = 1% VOUT under 1A load across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500V ±2% (guaranteed at 10mA–1A, 4V–12V input) |
| Max Dropout Voltage | 1.4V at 1A load (ensures regulation down to VIN = 3.9V) |
| Reference Voltage | 1.250V ±2% (internal bandgap reference used for output accuracy) |
| Load Regulation | ≤25mV (0–1A load change at VIN = 4V, ensures stable rail under dynamic load) |
| Line Regulation | ≤0.2% (input variation from VOUT+1.5V to 12V, minimizes supply ripple impact) |
| Thermal Shutdown | Activates at TJ ≈ +150°C (protects against sustained overload or poor heatsinking) |
| Output Capacitor | Min 4.7µF ceramic (X7R) or solid tantalum (ESR ≤ 0.5Ω) required for stability |
Pinout & Package
SOT89-3 package with exposed thermal tab connected to VOUT; compact surface-mount footprint (4.5 × 2.5 × 1.5 mm) optimized for space-constrained PCBs and moderate power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Adj (GND) | Ground terminal for fixed-mode operation; no external connection required |
| 2 | VOUT | Regulated 2.5V output; also connected to thermal tab for heat conduction |
| 3 | VIN | Input supply (4V–12V); requires ≥4.7µF decoupling capacitor close to pin |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 2.5V output | Eliminates external resistor divider, reduces BOM count and layout error risk |
| 1.4V max dropout at 1A | Enables use with 3.3V or 5V rails to generate 2.5V without excessive power loss |
| Built-in thermal shutdown | Self-protecting operation prevents damage during sustained overload or inadequate PCB copper |
| Fast transient response | Maintains <±33mV output deviation during 1A load steps (per typical performance curves) |
| Lead-free & Halogen-free | RoHS-compliant (≤900ppm Br/Cl, ≤1000ppm Sb) and "Green" certified per Diodes Inc. standards |
Applications
| PC Peripheral Power | VGA Card Core Supply |
|---|---|
Use Scenario: Providing clean 2.5V rail to USB hub controllers and PCIe endpoint logic on add-in cards. IC Role / Device Role / Timing Role: Primary local LDO delivering regulated core voltage to high-speed interface ICs. Use Value: Low dropout enables direct derivation from 3.3V system rail, minimizing heat generation and simplifying thermal design. | Use Scenario: Powering analog front-end circuitry and DAC buffers in legacy VGA graphics adapters. IC Role / Device Role / Timing Role: Fixed-output LDO supplying stable bias for video DACs and sync generators. Use Value: Tight 2.5V tolerance (±2%) ensures accurate color voltage levels and reduced gamma distortion. |
| Industrial Sensor Interface | Embedded Communication Module |
Use Scenario: Powering 2.5V ADCs and signal-conditioning op-amps in factory-floor sensor nodes. IC Role / Device Role / Timing Role: Local regulation stage isolating sensitive analog circuitry from noisy digital supplies. Use Value: Good noise rejection (≥60dB at 180Hz) suppresses switching noise from adjacent DC-DC converters. | Use Scenario: Supplying 2.5V to UART transceivers and RS-485 line drivers in industrial gateways. IC Role / Device Role / Timing Role: Point-of-load regulator ensuring stable logic levels for serial communication ICs. Use Value: Load regulation ≤25mV maintains valid logic thresholds across full 0–1A current range. |
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 |
|---|---|---|---|
| AP1117K25G-13 | TO263 package; θJA = 60°C/W vs. 164°C/W (SOT89-3); higher thermal capacity | Better suited for >0.5W continuous dissipation; requires larger PCB area | Select when power dissipation exceeds 0.3W and board space allows TO263 mounting |
| LD1117S25TR | STMicroelectronics part; dropout 1.3V typ at 1A; ±2% VOUT tolerance; SOT223 package | Higher thermal resistance (θJA = 107°C/W) than AP1117Y25G-13; same pinout but different marking | Use if sourcing flexibility needed; verify thermal margin due to higher θJA |
Compared with AP1117Y25G-13, the AP1117K25G-13 offers superior thermal performance in high-power scenarios, while LD1117S25TR provides second-source availability but demands stricter thermal management due to its SOT223 thermal resistance.
Availability
AP1117Y25G-13 is available at Aetrix Electronics and suitable for PC peripheral designs, VGA card manufacturing, industrial sensor interfaces, and embedded communication modules requiring stable component supply with RoHS-compliant packaging.
Supply support for AP1117Y25G-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 company specializing in discrete, analog, and mixed-signal devices, with emphasis on power management, signal integrity, and protection solutions.
The AP1117 series belongs to Diodes' precision LDO regulator product line, engineered for cost-sensitive, space-constrained applications demanding reliable low-noise 1A regulation in consumer, computing, and industrial systems.
FAQ
What is the minimum input voltage required for AP1117Y25G-13 to maintain regulation?
The minimum input voltage is VOUT + dropout voltage. With a guaranteed 1.4V max dropout at 1A, the device regulates down to VIN = 3.9V. At lighter loads (e.g., 10mA), dropout drops to ~1.2V, allowing operation from 3.7V. Input must remain ≥1.3V above VOUT per datasheet requirement.
Can AP1117Y25G-13 be used with MLCC output capacitors?
Yes - unlike older '1117 variants, the AP1117 is explicitly qualified for MLCC use. A minimum 4.7µF X7R ceramic capacitor (ESR ≤ 0.5Ω) is required. Y5V dielectrics are prohibited due to capacitance drift; aluminum electrolytics require ≥47µF and benefit from parallel 1µF MLCC.
Does AP1117Y25G-13 require an external adjustment resistor network?
No. As a fixed 2.5V variant, the AP1117Y25G-13 has internal feedback; Pin 1 (Adj/GND) is connected internally to ground and requires no external components. This eliminates resistor tolerance errors and simplifies layout versus adjustable versions.
How does thermal shutdown behave during overload conditions?
When junction temperature reaches ~150°C, the regulator disables output and remains off until die cools sufficiently (typically ~140°C hysteresis). This cycle repeats autonomously. It protects against permanent damage but is not intended for continuous operation - proper heatsinking or derating is required for sustained loads.
AP1117Y25G-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):
- 2.5V
- 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
AP1117Y25G-13 FAQ
1.How can I place an order for AP1117Y25G-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1117Y25G-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 AP1117Y25G-13 reliable?
The price and inventory of AP1117Y25G-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1117Y25G-13 is usually 5 days.
3.What payment methods are accepted for AP1117Y25G-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1117Y25G-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1117Y25G-13?
AP1117Y25G-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1117Y25G-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 AP1117Y25G-13?
For technical support, including AP1117Y25G-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1117Y25G-13 requirements.
6.How does Aetrix verify that AP1117Y25G-13 is sourced from the original manufacturer or authorized distributors?
All AP1117Y25G-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 AP1117Y25G-13 meets industry standards.
7.What is the process for return or replacement of AP1117Y25G-13?
All AP1117Y25G-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1117Y25G-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 AP1117Y25G-13 part is unused and in its original packaging.
Return procedure for AP1117Y25G-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP1117Y25G-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 practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
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…
