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Diodes Incorporated AP1118S25L-13
- Part No.:
- AP1118S25L-13
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AP1118S25L-13.pdf
- Description:
- IC REG LINEAR 2.5V 1A 8SOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,665
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Product details
Overview
AP1118S25L-13 from Anachip Corp. is a 1A positive low-dropout linear regulator with fixed 2.5V output, TTL/CMOS-compatible enable input, and 1.4V maximum dropout at full load. It delivers stable voltage for low-voltage ICs including 3.3V logic supplies and high-speed bus termination, housed in lead-free SOP-8L package.
For engineers reviewing the AP1118S25L-13 datasheet, AP1118S25L-13 pinout, AP1118S25L-13 application, or AP1118S25L-13 equivalent, key selection criteria include dropout voltage under 1.4V at 1A, ±2% output voltage accuracy at 10mA, thermal shutdown protection, and EN logic compatibility with internal 100kΩ pull-down.
Technical Context
The AP1118S25L-13 integrates a PNP pass transistor and precision bandgap reference to maintain regulation across 0–1A load and input voltages up to 18V. Its enable function supports system-level power sequencing by disabling output when EN >1.6V (logic high).
Designed for low-noise, low-ripple applications, it achieves 60–70dB ripple rejection at 120Hz with 25µF tantalum output capacitor and exhibits fast transient response-±40mV deviation during 100mA–1A load steps with 100µF output capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500 V ±2% at 10mA, ensuring compatibility with 2.5V logic families and ADC references |
| Dropout Voltage | 1.4 V max at 1A load, enabling operation with only 3.9V input for regulated 2.5V output |
| Load Regulation | 20–25 mV over 0–1A, limiting output shift to <1% full-scale under dynamic load |
| Ripple Rejection | 60–70 dB at 120Hz, suppressing AC noise from upstream switching supplies |
| Enable Threshold | Logic low ≤0.8V enables output; logic high ≥1.6V disables output with 100kΩ internal pull-down |
| Thermal Shutdown | Activates at TJ ≥150°C, protecting device during sustained overload or poor heatsinking |
| Quiescent Current | ≤80 µA at VEN=2.0V, minimizing standby power in always-on subsystems |
Pinout & Package
SOP-8L package: surface-mount, 8-pin plastic small-outline package with exposed thermal pad (pin 5 connected to VOUT tab); footprint compatible with JEDEC MS-012AC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT | Main regulated output; requires ≥10µF capacitor to ground for stability |
| 2 | GND | Analog ground reference; must be low-impedance connection to minimize noise coupling |
| 3 | EN | Enable control input; TTL/CMOS-compatible with internal 100kΩ pull-down to GND |
| 4 | VIN | Input supply; must exceed VOUT + 1.3V to maintain regulation |
| 5 | VOUT (Tab) | Internally connected to output pin; serves as primary thermal path to PCB copper |
| 6–8 | VOUT | Additional output pins for current sharing and reduced trace resistance; all tied internally |
Key Features
| Feature | Design Value |
|---|---|
| Low Dropout Operation | 1.4V max at 1A enables use with 3.9V input for 2.5V rail-critical for battery-powered systems |
| Fast Transient Response | ±40mV output deviation during 100mA→1A load step ensures signal integrity in burst-mode digital loads |
| Built-in Thermal Shutdown | Auto-recovery after cooldown prevents latch-up and enables unattended operation in enclosed enclosures |
| Output Current Limiting | 1.1A minimum current limit protects downstream circuitry during short-circuit events |
| Good Noise Rejection | 70dB ripple rejection at 120Hz allows clean analog supply generation from noisy DC/DC sources |
Applications
| PC Peripheral Power | Communication Module Supply |
|---|---|
Use Scenario: Providing stable 2.5V bias for USB controller PHYs and PCIe endpoint logic on add-in cards. IC Role / Device Role / Timing Role: Primary LDO regulator delivering low-noise, low-ripple supply for high-speed interface I/O buffers. Use Value: Maintains signal integrity with <25mV load regulation and 70dB ripple rejection, preventing bit errors in 5Gbps links. |
Use Scenario: Powering baseband processors and RF front-end bias circuits in cellular modem modules. IC Role / Device Role / Timing Role: Enable-controlled auxiliary regulator for selective power gating of non-active communication subsystems. Use Value: EN pin allows precise power sequencing; 1.4V dropout enables efficient use of shared 3.8V battery rail. |
| VGA Card Core Logic | Industrial Sensor Interface |
Use Scenario: Supplying 2.5V core voltage to video DACs and timing controllers on legacy VGA graphics cards. IC Role / Device Role / Timing Role: Fixed-output LDO replacing older 78xx series regulators where space and thermal constraints are tight. Use Value: SOP-8L package with thermal tab reduces board area by 60% vs TO-220 while sustaining 1A continuous output. |
Use Scenario: Regulating 2.5V reference voltage for 16-bit precision ADCs in programmable logic controllers. IC Role / Device Role / Timing Role: Low-drift, low-noise analog supply generator with ±0.5% temperature stability over –25°C to +85°C. Use Value: Output voltage drift <0.04%/W thermal regulation ensures <0.1% gain error in sensor signal chains. |
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 |
|---|---|---|---|
| AP2112K-2.5 | 0.6V dropout at 600mA; 0.8µA quiescent current; SOT-23-5 package; no EN pin | Limited to ≤600mA loads; unsuitable for 1A bus termination; lacks enable control for power sequencing | Select only for ultra-low-IQ portable applications with sub-600mA loads and no sequencing requirement |
| MCP1700T-2502E/TT | 250mA max output; 175mV dropout at 250mA; SOT-23 package; EN pin present | Inadequate for 1A VGA or peripheral loads; designed for microcontroller core rails, not high-current analog rails | Use only for low-power MCU I/O or sensor bias where 250mA suffices and space is critical |
Compared with AP2112K-2.5 and MCP1700T-2502E/TT, the AP1118S25L-13 uniquely supports 1A continuous output with 1.4V dropout and integrated EN-making it the sole option among the three for high-current, enable-controlled 2.5V regulation in PC peripherals and industrial interfaces.
Availability
AP1118S25L-13 is available at Aetrix Electronics and suitable for PC peripheral design, communication module integration, VGA card manufacturing, and industrial sensor interface development requiring stable component supply and long-term lifecycle support.
Supply support for AP1118S25L-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
Anachip Corp. is a Taiwan-based semiconductor company specializing in analog and power management ICs, with focus on LDOs, DC/DC converters, and LED drivers since 1997.
The AP1118 product line targets cost-sensitive, high-reliability linear regulation needs in computing peripherals and industrial electronics-emphasizing dropout performance, thermal robustness, and enable functionality in compact packages.
FAQ
What is the minimum input voltage required for AP1118S25L-13 to regulate at 2.5V?
The input voltage must exceed 3.8V to ensure regulation, as the device requires at least 1.3V headroom above VOUT. At full 1A load, the maximum dropout is 1.4V, so 3.9V input guarantees stable 2.5V output per datasheet specifications.
Can AP1118S25L-13 be used without an external output capacitor?
No. A minimum 10µF capacitor is mandatory between VOUT and GND for loop stability, as stated in the Pin Descriptions section. Omitting it risks oscillation and output voltage instability, especially under dynamic load conditions.
Is the thermal pad (Pin 5) electrically isolated or connected internally?
Pin 5 is the exposed thermal pad and is internally connected to VOUT, not GND or floating. It must be soldered to a large copper pour tied to the VOUT net to ensure proper heat dissipation and electrical continuity.
Does the EN pin require an external pull-up or pull-down resistor?
No external resistor is needed-the EN pin has an internal 100kΩ pull-down to GND. Leaving EN unconnected results in logic-low state and enabled output; a logic-high signal (>1.6V) is required to disable the regulator.
AP1118S25L-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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 (120Hz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- 0°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOP
AP1118S25L-13 FAQ
1.How can I place an order for AP1118S25L-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1118S25L-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 AP1118S25L-13 reliable?
The price and inventory of AP1118S25L-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1118S25L-13 is usually 5 days.
3.What payment methods are accepted for AP1118S25L-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1118S25L-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1118S25L-13?
AP1118S25L-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1118S25L-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 AP1118S25L-13?
For technical support, including AP1118S25L-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1118S25L-13 requirements.
6.How does Aetrix verify that AP1118S25L-13 is sourced from the original manufacturer or authorized distributors?
All AP1118S25L-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 AP1118S25L-13 meets industry standards.
7.What is the process for return or replacement of AP1118S25L-13?
All AP1118S25L-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1118S25L-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 AP1118S25L-13 part is unused and in its original packaging.
Return procedure for AP1118S25L-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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