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Diodes Incorporated AP1513SL-13
- Part No.:
- AP1513SL-13
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AP1513SL-13.pdf
- Description:
- IC REG BUCK ADJ 2A 8SOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,016
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Product details
Overview
AP1513SL-13 from Diodes Incorporated is a 2A PWM-controlled step-down DC/DC converter with integrated P-channel MOSFET, operating from 3.6V to 18V input and delivering adjustable output (0.8V–VCC). It features 300kHz fixed-frequency switching, internal soft-start, over-current and short-circuit protection, and thermal shutdown - enabling compact, low-ripple power supplies for microprocessor core rails and peripheral equipment.
For engineers reviewing the AP1513SL-13 datasheet, AP1513SL-13 pinout, AP1513SL-13 application, or AP1513SL-13 equivalent, key selection considerations include its SO-8 package footprint, internal PMOS switch (RDS(ON) = 70–150 mΩ), 0–100% duty cycle control, current-limit threshold set via external OCSET resistor, and compatibility with standard buck layout practices for EMI-sensitive designs.
Technical Context
The AP1513SL-13 implements a voltage-mode PWM controller with internal reference (0.8V ±2%), error amplifier, and oscillator. Its feedback loop uses resistive divider sensing at FB pin, while OCSET pin accepts an external resistor to set peak current limit based on 90µA sink current. Under fault conditions (OCP/SCP), frequency drops from 300kHz to 30kHz for safe foldback operation.
It integrates under-voltage lockout (UVLO) activating below 3.3V VCC, thermal shutdown at ~150°C junction temperature, and internal compensation to minimize external components. The dual-output pins (5 & 6) and dual-GND pins (7 & 8) in SO-8 reduce conduction loss and improve thermal dissipation in high-current buck topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.6V to 18V - supports AC adapter inputs and wide-input industrial rails without pre-regulation. |
| Output Current | Up to 2A continuous - sufficient for CPU core, GPU I/O, or ASIC logic supply in embedded systems. |
| Switching Frequency | 300kHz typical - balances efficiency, inductor size, and EMI filtering requirements. |
| Feedback Reference | 0.8V ±2% - enables precise output regulation down to sub-1V levels for modern low-voltage cores. |
| RDS(ON) | 70–150 mΩ (VIN = 12V) - reduces conduction loss and thermal stress in high-current paths. |
| Soft-Start Time | 0.3–5ms - prevents inrush current and output overshoot during power-up sequencing. |
| Efficiency | 92% @ 12VIN/5VOUT/2A - minimizes heat generation and extends battery life in portable applications. |
Pinout & Package
AP1513SL-13 is housed in an SO-8 mini package with exposed thermal pad (dual GND and dual output pins internally connected to die pad). Recommended PCB layout includes maximum copper area at pins 5/6 (Output) and 7/8 (VSS) for thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 FB | Feedback input | Senses output voltage via resistive divider; sets regulation point at 0.8V reference. |
| 2 EN | Enable control | High = normal operation; Low = full shutdown with 10µA quiescent current. |
| 3 OCSET | Over-current threshold setting | External resistor to VCC sets current limit via 90µA internal sink current. |
| 4 VCC | IC power supply | Bias supply for internal circuitry; must be decoupled with ≥0.1µF ceramic capacitor. |
| 5,6 Output | Switch node | Connects to inductor and Schottky diode; dual pins reduce trace inductance and EMI. |
| 7,8 VSS | Ground return | Dual GND pins lower impedance path for high-frequency return currents and thermal conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated P-channel MOSFET | Eliminates need for external high-side switch, reducing BOM count and layout complexity. |
| Internal compensation network | Enables stable loop response with only FB divider and output capacitor - no external compensation required. |
| Frequency foldback under fault | Reduces switching frequency to 30kHz during OCP/SCP, lowering power dissipation and improving reliability. |
| UVLO with hysteresis | Prevents erratic startup by holding off operation until VCC exceeds 3.5V after dropping below 3.3V. |
| Lead-free & Halogen-free | Complies with RoHS 2 and Diodes' "Green" standard (<900ppm Br/Cl, <1000ppm Sb) for eco-conscious manufacturing. |
Applications
| Microprocessor Core Supply | PC Motherboard VRM |
|---|---|
|
Use Scenario: Powering ARM Cortex-A series or x86 SoC cores requiring tightly regulated 0.8–1.2V at up to 2A. IC Role / Device Role / Timing Role: Primary buck regulator providing dynamically adjusted low-noise core voltage with fast transient response. Use Value: Internal soft-start and 0.8V reference enable safe boot sequencing; 92% efficiency reduces thermal load on dense motherboard layouts. |
Use Scenario: Generating +3.3V or +5V auxiliary rails for chipset, USB controllers, and PCIe slots on ATX motherboards. IC Role / Device Role / Timing Role: Secondary step-down converter replacing linear regulators to improve system-level power efficiency. Use Value: SO-8 footprint matches standard VRM land patterns; dual GND/output pins support high-current routing without thermal bottlenecks. |
| LCD Monitor Power | Networking Power Supply |
|
Use Scenario: Delivering stable 12V or 5V bias to LED backlight drivers and TCON logic in 15–24" LCD panels. IC Role / Device Role / Timing Role: Main DC/DC stage converting 19V adapter input to panel-specific intermediate rails. Use Value: 18V max input accommodates universal AC adapters; low ripple (<50mV p-p typical) prevents display noise artifacts. |
Use Scenario: Providing isolated 3.3V/5V rails for Ethernet PHYs, PoE controllers, and switch fabric in SMB routers and switches. IC Role / Device Role / Timing Role: Non-isolated buck converter in secondary side of offline SMPS, supporting burst-mode operation. Use Value: Enable pin allows remote power cycling; thermal shutdown protects against airflow-blocked chassis environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP1584EN-LF-Z (Monolithic Power) | Higher 1.5A rating, 1.5MHz switching, external N-MOSFET - requires more external components and higher gate drive overhead. | Preferred for space-constrained designs needing smaller inductors; less suitable for high-current (>1.5A) or low-EMI applications. | Select when board area is critical and 1.5A output suffices; avoid if 2A continuous load or SO-8 compatibility is mandatory. |
| TPS54202DRCT (Texas Instruments) | 2A rating, 4.5–17V input, integrated N-MOSFET, 500kHz switching, and advanced Eco-mode for light-load efficiency. | Better suited for battery-powered devices requiring ultra-low quiescent current (<20µA); lacks OCSET programmability. | Choose for portable applications with variable load profiles; not recommended where adjustable current limiting or SO-8 pinout is required. |
Compared with MP1584EN-LF-Z and TPS54202DRCT, AP1513SL-13 offers superior current capability (2A), simpler external component count due to P-MOS integration, and direct OCSET-based current limit tuning - making it optimal for cost-sensitive, thermally constrained, fixed-rail industrial and computing power supplies.
Availability
AP1513SL-13 is available at Aetrix Electronics and suitable for PC motherboard VRMs, LCD monitor power subsystems, and networking equipment requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for AP1513SL-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, computing, and consumer markets.
AP1513SL-13 belongs to Diodes' PWM step-down converter product line, designed specifically for compact, efficient, and cost-optimized DC/DC conversion in space- and thermal-constrained embedded systems.
FAQ
What is the minimum recommended input capacitance for AP1513SL-13?
A 470µF low-ESR aluminum electrolytic capacitor is recommended for most applications, placed close to pins 4 (VCC) and 7/8 (VSS). Its RMS current rating should support at least half the DC load current (≥1A RMS for 2A output), and voltage rating must exceed 1.5× maximum input voltage (e.g., 25V for 18VIN).
How is output voltage set on AP1513SL-13?
Output voltage is set using a resistive divider between VOUT and GND, with the midpoint connected to FB pin. The formula is VOUT = VFB × (1 + RA/RB), where VFB = 0.8V. RB should be 0.7kΩ–5kΩ; typical values are 1.3kΩ (for 5V) or 6.8kΩ (for 3.3V) with RA = 3kΩ or 100kΩ respectively.
Does AP1513SL-13 require external compensation components?
No - AP1513SL-13 includes an internal compensation network optimized for stability with standard output capacitor ESR ranges. Only the FB divider resistors and output capacitor are required for basic operation; no external RC network is needed unless custom transient response tuning is required.
What happens during over-current or short-circuit events?
When OCSET pin voltage falls below PWM switch node voltage, over-current protection triggers and switching frequency folds back from 300kHz to 30kHz. This reduces average power dissipation and allows safe thermal recovery. Operation resumes automatically once fault condition clears and soft-start reinitiates.
AP1513SL-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
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.6V
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 18V
- Current - Output:
- 2A
- Frequency - Switching:
- 300kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOP
AP1513SL-13 FAQ
1.How can I place an order for AP1513SL-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1513SL-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 AP1513SL-13 reliable?
The price and inventory of AP1513SL-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1513SL-13 is usually 5 days.
3.What payment methods are accepted for AP1513SL-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1513SL-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1513SL-13?
AP1513SL-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1513SL-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 AP1513SL-13?
For technical support, including AP1513SL-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1513SL-13 requirements.
6.How does Aetrix verify that AP1513SL-13 is sourced from the original manufacturer or authorized distributors?
All AP1513SL-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 AP1513SL-13 meets industry standards.
7.What is the process for return or replacement of AP1513SL-13?
All AP1513SL-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1513SL-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 AP1513SL-13 part is unused and in its original packaging.
Return procedure for AP1513SL-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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