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Diodes Incorporated AP1510SL-13
- Part No.:
- AP1510SL-13
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AP1510SL-13.pdf
- Description:
- IC REG BUCK ADJUSTABLE 3A 8SOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,684
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Product details
Overview
AP1510SL-13 from Diodes Incorporated is a PWM-controlled 3A step-down DC/DC converter with integrated P-channel MOSFET, 300kHz fixed-frequency operation, 0.8V feedback reference, and built-in current limit, thermal shutdown, and enable functionality-designed for microprocessor core supplies and portable device power rails.
For engineers reviewing the AP1510SL-13 datasheet, AP1510SL-13 pinout, AP1510SL-13 application, or AP1510SL-13 equivalent, key selection considerations include input voltage range (3.6–23V), output adjustability via FB resistor divider, internal compensation, SO-8 thermal performance (θJA = 134°C/W), and OCP/SCP frequency foldback behavior.
Technical Context
The AP1510SL-13 implements a fixed-frequency PWM control architecture with linear duty cycle adjustment (0–100%), internal 0.8V reference, and soft-start (0.3–5ms). Its oscillator operates at 300kHz (240–360kHz over conditions) and folds back to 10kHz during overcurrent or short-circuit events.
It integrates a P-channel high-side switch (RDS(ON) = 70–150mΩ), error amplifier, under-voltage lockout (UVLO: 3.3V off / 3.5V on), and thermal shutdown (TSHDN = +150°C, hysteresis = +55°C), enabling self-contained buck regulation with minimal external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.6V to 23V - supports AC adapter inputs and wide-input industrial rails |
| Output Current | Up to 3A - sufficient for microprocessor core and GPU I/O power domains |
| Feedback Reference | 0.8V ±2% - enables precise output setting from 0.8V to VCC via resistor divider |
| Switching Frequency | 300kHz typical - balances EMI, inductor size (22µH typical), and efficiency |
| Efficiency | 91% at 12VIN/5VOUT/3A - reduces thermal load in space-constrained SO-8 layout |
| RDS(ON) | 70mΩ (12VIN) - lowers conduction loss and improves light-load efficiency |
| Thermal Shutdown | +150°C with +55°C hysteresis - prevents latch-up and enables safe recovery after overload |
Pinout & Package
AP1510SL-13 is housed in an SO-8 package with exposed thermal pad (dual Output and VSS pins internally connected to die pad). The package supports enhanced thermal dissipation when mounted on ≥2oz copper FR-4 with optimized pad layout per Diodes' recommended footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 FB | Feedback input | Monitors output voltage via resistor divider; sets regulation point at 0.8V |
| 2 EN | Enable control | High = normal operation; low = full shutdown (10µA quiescent) |
| 3 OCSET | Overcurrent threshold set | External resistor defines peak current limit via 90µA sink current |
| 4 VCC | Bias supply input | Powers internal circuitry; requires local 0.1µF + 470µF decoupling |
| 5,6 Output | Switch node | Connects to inductor/diode; dual pins reduce EMI and improve current handling |
| 7,8 VSS | Power ground | Common return for VCC, FB, EN, OCSET; dual pins enhance grounding and thermal path |
Key Features
| Feature | Design Value |
|---|---|
| Integrated P-channel MOSFET | Eliminates need for external high-side switch; simplifies BOM and layout |
| Internal compensation network | Reduces external component count to only inductor, diode, and input/output capacitors |
| Frequency foldback under fault | Switches from 300kHz → 10kHz during OCP/SCP to lower power dissipation and aid thermal recovery |
| Soft-start function | Controls output ramp rate (0.3–5ms) to prevent inrush current and overshoot |
| UVLO with hysteresis | Prevents erratic startup below 3.3V and ensures clean re-enable above 3.5V |
Applications
| Microprocessor Core Supply | PC Motherboard VRM |
|---|---|
Use Scenario: Powers CPU core logic requiring tightly regulated 0.8–1.5V at up to 3A with fast transient response. IC Role / Device Role / Timing Role: Primary step-down regulator delivering stable core voltage with <0.5% load regulation. Use Value: Internal 0.8V reference and low RDS(ON) ensure accurate, efficient regulation under dynamic load changes. | Use Scenario: Supplies auxiliary 3.3V or 5V rails for chipset, memory buffers, and PCIe slots on ATX motherboards. IC Role / Device Role / Timing Role: Secondary buck converter operating from 12V rail with adjustable output and enable sequencing. Use Value: 23V max input accommodates unregulated 12V sources; EN pin enables power-rail sequencing with other VRMs. |
| LCD Monitor Power | Networking Power Supply |
Use Scenario: Generates 5V/3A panel backlight and logic supply in compact LCD monitor designs. IC Role / Device Role / Timing Role: Main DC/DC converter replacing linear regulators to improve efficiency and reduce heat. Use Value: SO-8 thermal design and 91% efficiency minimize heatsink requirements in sealed enclosures. | Use Scenario: Provides isolated 3.3V or 5V for Ethernet PHY, switch controller, and PoE interface circuits. IC Role / Device Role / Timing Role: Non-isolated buck stage in multi-rail telecom power architecture. Use Value: Wide 3.6–23V input range accepts varied intermediate bus voltages (e.g., 12V, 19V, 24V). |
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 | 3A synchronous buck; 1.5MHz switching; no internal P-MOS (requires external N-MOS sync rectifier) | Higher frequency enables smaller inductors but increases EMI sensitivity and layout complexity | Preferred where board space is constrained and EMI filtering can be managed |
| LM2678SX-5.0/NOPB | 5A nonsynchronous buck; 260kHz; external N-MOS switch; no integrated OCSET or soft-start | Higher current rating but requires additional compensation and current-sense components | Chosen when >3A output or higher VIN tolerance (40V) is required |
Compared with MP1584EN-LF-Z and LM2678SX-5.0/NOPB, AP1510SL-13 offers simpler implementation (integrated P-MOS, internal OCSET, soft-start), lower EMI (300kHz), and tighter output accuracy (0.8V ±2%), making it optimal for cost-sensitive, thermally constrained, and layout-simple applications.
Availability
AP1510SL-13 is available at Aetrix Electronics and suitable for microprocessor core supply, PC motherboard VRM, LCD monitor power, and networking power supply applications requiring stable component supply, RoHS-compliant packaging, and long-term industrial availability.
Supply support for AP1510SL-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-performance, energy-efficient power management and signal integrity solutions.
The AP1510 belongs to Diodes' PWM DC/DC converter product line, engineered for compact, low-cost, and thermally robust buck regulation in portable and embedded systems where integration and reliability are critical.
FAQ
What is the minimum recommended input capacitor for AP1510SL-13?
A 470µF low-ESR aluminum electrolytic capacitor is recommended, placed close to VCC and VSS pins. Its RMS current rating must support ~1.5A (half the 3A load), and voltage rating should be ≥1.5× maximum input voltage (e.g., 35V for 23VIN). Ceramic bypass (0.1µF) is required in parallel for high-frequency filtering.
How is output voltage set on AP1510SL-13?
Output voltage is set using a resistor divider from VOUT to FB and FB to GND. With VFB = 0.8V, VOUT = 0.8V × (1 + RA/RB). RB should be 0.7kΩ–5kΩ; typical values are 1.3kΩ (RB) and 6.8kΩ (RA) for 5V output. Layout must minimize noise coupling into FB.
Does AP1510SL-13 require an external Schottky diode?
Yes - an external Schottky diode is required between the Output pin and VOUT to provide freewheeling current path during MOSFET off-time. Diode forward voltage and reverse recovery must be minimized; typical selection is 3A/40V Schottky (e.g., SB340). Synchronous rectification is not supported.
What happens during overcurrent or short-circuit conditions?
When OCSET pin voltage drops below internal threshold, AP1510SL-13 enters current-limit mode and reduces switching frequency from 300kHz to ~10kHz. This foldback lowers power dissipation and allows thermal recovery. Operation resumes automatically once fault clears and EN remains high.
AP1510SL-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:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOP
AP1510SL-13 FAQ
1.How can I place an order for AP1510SL-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1510SL-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 AP1510SL-13 reliable?
The price and inventory of AP1510SL-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1510SL-13 is usually 5 days.
3.What payment methods are accepted for AP1510SL-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1510SL-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1510SL-13?
AP1510SL-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1510SL-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 AP1510SL-13?
For technical support, including AP1510SL-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1510SL-13 requirements.
6.How does Aetrix verify that AP1510SL-13 is sourced from the original manufacturer or authorized distributors?
All AP1510SL-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 AP1510SL-13 meets industry standards.
7.What is the process for return or replacement of AP1510SL-13?
All AP1510SL-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1510SL-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 AP1510SL-13 part is unused and in its original packaging.
Return procedure for AP1510SL-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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