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Diodes Incorporated AP1530SL-13
- Part No.:
- AP1530SL-13
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AP1530SL-13.pdf
- Description:
- IC REG BUCK ADJ 3A 8SOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,097
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Product details
Overview
AP1530SL-13 from Diodes Incorporated is a 300 kHz fixed-frequency PWM step-down DC/DC converter with integrated P-channel MOSFET, supporting 3.6–18 V input and delivering up to 3 A output at adjustable voltage (0.8 V to VCC). It features internal current limiting, thermal shutdown, enable control, and built-in compensation-designed for compact, low-ripple power supplies in portable and adapter-powered systems.
For engineers reviewing the AP1530SL-13 datasheet, AP1530SL-13 pinout, AP1530SL-13 application, or AP1530SL-13 equivalent, key selection considerations include its 300 kHz switching frequency, 0.8 V feedback reference, SOP-8L thermal performance (θJA = 134 °C/W), 92% peak efficiency at 5 V/3 A, and OCSET-based current limit configuration.
Technical Context
The AP1530SL-13 implements a constant-frequency PWM control architecture with linear duty-cycle adjustment from 0% to 100%, enabling precise regulation across load and line variations. Its internal error amplifier compares FB voltage against a 0.8 V reference, while the oscillator drives the integrated P-MOS switch at typ. 300 kHz-reducing to 50 kHz during overcurrent or short-circuit events.
Protection logic includes under-voltage lockout (UVLO active below 3.3 V), thermal shutdown at 150 °C with 55 °C hysteresis, and external current limit set via ROCSET resistor. The IC requires only an inductor, diode, input/output capacitors, and two feedback resistors to operate as a complete buck regulator.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.6 V to 18 V - supports wide-input applications including AC adapters and 12 V rail systems. |
| Output Current | Up to 3 A - sufficient for microprocessor core supplies and peripheral power rails. |
| Switching Frequency | 300 kHz typ. (240–360 kHz) - balances EMI, inductor size, and efficiency for cost-sensitive designs. |
| Feedback Reference | 0.8 V ±2% - enables precise output setting down to 0.8 V using standard resistor dividers. |
| RDS(ON) | 70–150 mΩ (VIN = 12 V / 5 V) - determines conduction loss and thermal rise under full load. |
| Efficiency | 92% typ. at VIN = 12 V, VOUT = 5 V, IOUT = 3 A - reduces heat generation and extends battery life in portable devices. |
| Thermal Resistance | θJA = 134 °C/W (SOP-8L, FR-4, 2 oz Cu) - defines junction-to-ambient temperature rise per watt dissipated. |
Pinout & Package
SOP-8L package with exposed thermal pad (pins 5–6 SW, 7–8 VSS internally connected to die pad); RoHS-compliant, green molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB (Pin 1) | Feedback input | Monitors output voltage via resistor divider; regulates to 0.8 V reference. |
| EN (Pin 2) | Enable control | High = normal operation; low = full shutdown (10 µA quiescent current). |
| OCSET (Pin 3) | Current limit threshold | External resistor sets overcurrent trip point via 90 µA internal sink current. |
| VCC (Pin 4) | IC supply | Powers internal circuitry; UVLO disables operation below 3.3 V. |
| Output (Pins 5 & 6) | Switch node | Drives external inductor/diode; dual pins reduce EMI and improve thermal path to PCB copper. |
| VSS (Pins 7 & 8) | Ground return | Dual GND pins minimize ground impedance and enhance thermal conduction to PCB. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated P-channel MOSFET | Eliminates need for external high-side switch; simplifies layout and reduces BOM count. |
| Internal compensation network | Reduces external component count to only inductor, diode, input/output caps, and FB resistors. |
| Adjustable current limit | Configurable overcurrent protection via single ROCSET resistor-supports multiple output current levels. |
| Thermal shutdown with hysteresis | Shuts down at 150 °C and resumes at ~95 °C-prevents latch-up and enables safe recovery. |
| Low-quiescent enable mode | 10 µA shutdown current enables long-term battery-backed standby without significant drain. |
Applications
| PCD Motherboard Power | LCD Monitor Supply |
|---|---|
|
Use Scenario: Provides stable 3.3 V or 5 V rail for chipset I/O and memory interface on desktop motherboard VRMs. IC Role / Device Role / Timing Role: Primary step-down regulator converting 12 V ATX rail to lower logic voltages. Use Value: Delivers 3 A continuous current with <0.5% load regulation-ensuring signal integrity under dynamic CPU/GPU load transients. |
Use Scenario: Powers LCD panel backlight drivers and timing controller in 19–24 inch monitors. IC Role / Device Role / Timing Role: Secondary DC/DC stage stepping down 12 V adapter input to 5 V or adjustable VOUT. Use Value: 300 kHz fixed frequency avoids audible noise; 92% efficiency minimizes heat near sensitive display components. |
| Graphic Card Auxiliary Rail | Networking Power Supply |
|
Use Scenario: Supplies auxiliary 1.2 V or 1.8 V rail for GPU memory interface or PCIe bridge logic. IC Role / Device Role / Timing Role: Compact buck converter mounted directly on graphics card PCB near load point. Use Value: SOP-8L footprint and dual SW/VSS pins support high-current routing with minimal trace inductance and EMI. |
Use Scenario: Generates 3.3 V or 5 V for Ethernet PHYs, switch controllers, and PoE interface logic. IC Role / Device Role / Timing Role: Input-stage regulator accepting 12 V from wall adapter or midplane distribution. Use Value: Wide 3.6–18 V input range accommodates both 12 V nominal and brownout conditions in telecom environments. |
Availability
AP1530SL-13 is available at Aetrix Electronics and suitable for PCD motherboard, LCD monitor, and networking power supply designs requiring stable component supply during legacy system maintenance and repair cycles.
Supply support for AP1530SL-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 power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
The AP1530 belongs to Diodes' integrated buck converter product line, designed to deliver high-efficiency, low-component-count DC/DC regulation for space-constrained portable and adapter-powered applications.
FAQ
What is the recommended inductor value for AP1530SL-13?
The datasheet recommends 22 µH to 33 µH for most applications, with 22 µH used in the typical 5 V/3 A design. Inductor selection must account for ripple current (~0.45 A at 3 A max load) and DC saturation rating ≥3.225 A. Core material should support 300 kHz operation with low core loss.
How is overcurrent protection configured on AP1530SL-13?
Overcurrent protection is set by connecting an external resistor (ROCSET) between VCC and OCSET pin. With a typical 90 µA internal sink current, ROCSET = VCC/90 µA defines the OCSET voltage. Threshold current is calculated using RDS(ON), input/output voltages, and switching frequency per the datasheet equation.
Does AP1530SL-13 require external compensation components?
No-AP1530SL-13 includes an internal compensation network. Only the feedback resistors (RA/RB), input/output capacitors, inductor, and Schottky diode are required for basic operation. This reduces design complexity and board area versus controllers requiring external Type II or III compensation.
Is AP1530SL-13 suitable for automotive applications?
No-AP1530SL-13 is not AEC-Q200 qualified and operates only from –20 °C to +85 °C ambient. Its absolute maximum junction temperature is 125 °C, and it lacks automotive-specific protections such as extended temperature grade, enhanced ESD robustness, or PPAP documentation support.
AP1530SL-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:
- 3A
- Frequency - Switching:
- 300kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -25°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOP
AP1530SL-13 FAQ
1.How can I place an order for AP1530SL-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1530SL-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 AP1530SL-13 reliable?
The price and inventory of AP1530SL-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1530SL-13 is usually 5 days.
3.What payment methods are accepted for AP1530SL-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1530SL-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1530SL-13?
AP1530SL-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1530SL-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 AP1530SL-13?
For technical support, including AP1530SL-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1530SL-13 requirements.
6.How does Aetrix verify that AP1530SL-13 is sourced from the original manufacturer or authorized distributors?
All AP1530SL-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 AP1530SL-13 meets industry standards.
7.What is the process for return or replacement of AP1530SL-13?
All AP1530SL-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1530SL-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 AP1530SL-13 part is unused and in its original packaging.
Return procedure for AP1530SL-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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