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Diodes Incorporated AP5002SG-13
- Part No.:
- AP5002SG-13
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AP5002SG-13.pdf
- Description:
- IC REG BUCK ADJ 2A 8SOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,319
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Product details
Overview
AP5002SG-13 from Diodes Incorporated is a 2A synchronous step-down DC/DC converter with integrated P-channel MOSFET, PWM control up to 100% duty cycle, 500kHz fixed switching frequency, and 3.6V–20V input range. It delivers adjustable output (0.8V to VIN) with ±2% feedback voltage accuracy (0.8V typ), 90% peak efficiency, and built-in soft-start, thermal shutdown, overcurrent, and short-circuit protection - used in PC motherboard VRMs and LCD monitor power rails.
For engineers reviewing the AP5002SG-13 datasheet, AP5002SG-13 pinout, AP5002SG-13 application, or AP5002SG-13 equivalent, key selection criteria include internal PMOS RDS(ON) (70–150 mΩ), dual SW/VSS pins for EMI reduction, SOP-8L thermal resistance (θJA = 124°C/W), and MLCC-compatible compensation design requiring only 330pF + 0.1µF external capacitors.
Technical Context
The AP5002SG-13 implements a constant-frequency PWM architecture with internal 0.8V reference and error amplifier driving a P-channel switch. Its oscillator maintains 400–600kHz operation across input voltage (3.6–20V) and temperature (−20°C to +125°C), enabling stable regulation under transient load steps.
Protection logic reduces switching frequency from 500kHz to 50kHz during overcurrent or short-circuit events, while the EN pin provides precise enable/disable control (VSH = 2.0V, VSL = 0.8V) and the COMP pin supports type-II compensation with minimal external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.6V to 20V - supports AC adapter inputs and wide industrial supply rails without pre-regulation. |
| Output Current | 0A to 2A - rated continuous output with 3.5A internal switch current limit for transient headroom. |
| Feedback Voltage | 0.784V to 0.816V (typ 0.8V) - enables precise output setting via resistor divider with ±2% tolerance. |
| Switching Frequency | 400kHz to 600kHz (typ 500kHz) - balances EMI performance and inductor size (10–22µH typical). |
| RDS(ON) | 70mΩ (at VIN = 12V) - minimizes conduction loss and improves efficiency at high load currents. |
| Soft-Start Time | 3ms typical - prevents output overshoot and inrush current during power-up sequencing. |
| Quiescent Current | 3mA typ (ICCQ) - ensures low standby power in always-on systems like networking equipment. |
Pinout & Package
SOP-8L package with exposed thermal pad (dual SW pins 5&6 and dual VSS pins 7&8 internally connected to die pad); requires minimum 2oz copper PCB layout per Diodes Inc. land pattern (5.4mm × 6.0mm body, 1.27mm pitch).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB (Pin 1) | Feedback input | Monitors output voltage via resistor divider; sets regulation point at 0.8V reference. |
| EN (Pin 2) | Enable control | High (>2.0V) enables operation; low (<0.8V) disables all circuits and reduces IQ to 10µA. |
| COMP (Pin 3) | Compensation node | Connects external RC network (e.g., 330pF + 0.1µF) to stabilize control loop dynamics. |
| VCC (Pin 4) | Bias supply | Powers internal circuitry; requires local 0.1µF ceramic capacitor between VCC and VSS. |
| Output (Pin 5 & 6) | Switch output | Drives external inductor/diode; dual pins reduce trace inductance and EMI radiation. |
| VSS (Pin 7 & 8) | Power ground | Return path for IC core and switch; dual pins improve thermal dissipation and noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated P-channel MOSFET | Eliminates need for external high-side switch; RDS(ON) optimized for 12V input, 3.3V/2A output. |
| 100% duty-cycle capability | Enables dropout operation down to VOUT + VDS(ON), critical for low-VIN applications like battery-powered peripherals. |
| MLCC-compatible compensation | Supports low-ESR ceramic capacitors (e.g., 0.1µF + 330pF) instead of electrolytics, reducing board area and improving reliability. |
| Frequency foldback on fault | Reduces switching frequency from 500kHz to 50kHz during OCP/SCP, lowering power dissipation and enabling safe fault recovery. |
| SOP-8L "Green" package | Halogen-free molding compound (no Br/Sb); RoHS-compliant footprint compatible with standard reflow profiles. |
Applications
| PC Motherboard VRM | LCD Monitor Power Supply |
|---|---|
|
Use Scenario: Regulating 12V rail to 3.3V/2.5V for chipset I/O and display interface logic. IC Role / Device Role / Timing Role: Primary buck controller delivering stable, low-noise power with fast transient response to dynamic load changes. Use Value: Dual SW/VSS pins minimize EMI in dense motherboard layouts; 90% efficiency reduces thermal load near sensitive analog circuitry. |
Use Scenario: Generating 5V and 3.3V supplies for LCD panel timing controllers and backlight drivers. IC Role / Device Role / Timing Role: Adjustable-output DC/DC converter supporting multiple voltage rails from single 12V input. Use Value: 0.8V feedback reference enables precise output setting; soft-start prevents backlight flicker during power-up. |
| Graphics Card Auxiliary Rail | Networking Equipment PoE Interface |
|
Use Scenario: Providing 1.8V/1.5V core supply for GPU memory interface buffers and PCIe PHYs. IC Role / Device Role / Timing Role: High-efficiency point-of-load regulator with tight line/load regulation (±1% max). Use Value: 100% duty cycle allows operation during brownout conditions; thermal shutdown protects against fan failure scenarios. |
Use Scenario: Converting 48V PoE-derived 12V intermediate rail to 3.3V for Ethernet PHY and MAC controllers. IC Role / Device Role / Timing Role: Robust buck converter handling wide input variation (±10% line regulation) and burst-mode traffic loads. Use Value: 20V absolute max input withstands PoE surge transients; overcurrent protection safeguards downstream Ethernet magnetics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2307DN-LF-Z (Monolithic Power) | 3A rating, 150kHz–500kHz adjustable frequency, N-channel sync rectification, no 100% duty cycle. | Higher current capacity but larger solution size; requires external bootstrap capacitor and gate driver. | Prefer when >2A output or adjustable frequency is required; avoid if 100% duty cycle or minimal BOM count is critical. |
| TPS54202DRCT (Texas Instruments) | 2A, 4.5–17V input, 500kHz fixed freq, integrated N-MOSFETs, 0.8V ref, no internal compensation. | Requires external compensation network; higher quiescent current (45µA vs. 3mA) but better light-load efficiency. | Prefer for ultra-low IQ battery apps; avoid if MLCC-only compensation or SOP-8L footprint compatibility is mandatory. |
Compared with MP2307DN-LF-Z and TPS54202DRCT, the AP5002SG-13 offers unique 100% duty-cycle operation and true SOP-8L pinout with dual SW/VSS for EMI-sensitive designs, while maintaining lowest external component count among 2A buck converters with internal P-MOS.
Availability
AP5002SG-13 is available at Aetrix Electronics and suitable for PC motherboard VRMs, LCD monitor power supplies, graphics card auxiliary rails, and networking equipment PoE interfaces requiring stable component supply, long-term lifecycle support, and RoHS-compliant green packaging.
Supply support for AP5002SG-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 AP5002 belongs to Diodes' high-efficiency DC/DC converter product line, designed specifically for space-constrained, cost-sensitive applications requiring minimal external components and robust protection features in portable and embedded systems.
FAQ
What is the maximum allowable input voltage for AP5002SG-13?
The AP5002SG-13 has an absolute maximum VCC rating of VSS + 22V, with recommended operating input range specified as 3.6V to 20V. Exceeding 20V may trigger thermal shutdown or cause permanent damage due to exceeding power dissipation limits in the internal P-MOSFET.
Can AP5002SG-13 operate with 100% duty cycle, and under what conditions?
Yes - the AP5002SG-13 supports 100% duty cycle operation when the output voltage approaches VIN − VDS(ON). This occurs during low-dropout conditions (e.g., 5V input → 3.3V output), enabled by its P-channel high-side switch architecture and absence of bootstrap capacitor requirement.
How does the overcurrent protection behave during fault conditions?
When overcurrent or short-circuit is detected, the AP5002SG-13 reduces switching frequency from 500kHz to 50kHz, limiting average power dissipation and allowing safe thermal recovery. The device remains latched in this reduced-frequency mode until EN is cycled low-high or input power is removed.
Which capacitor types are validated for AP5002SG-13 output filtering?
The AP5002SG-13 is validated for both aluminum electrolytic (e.g., 470µF, low-ESR) and multilayer ceramic (e.g., 22µF X5R/X7R) output capacitors. MLCCs are preferred for compact designs due to lower ESR and superior high-frequency ripple suppression, with no stability issues reported using standard 0.1µF + 330pF compensation.
AP5002SG-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):
- 20V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 20V
- Current - Output:
- 2A
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOP
AP5002SG-13 FAQ
1.How can I place an order for AP5002SG-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP5002SG-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 AP5002SG-13 reliable?
The price and inventory of AP5002SG-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP5002SG-13 is usually 5 days.
3.What payment methods are accepted for AP5002SG-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP5002SG-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP5002SG-13?
AP5002SG-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP5002SG-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 AP5002SG-13?
For technical support, including AP5002SG-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP5002SG-13 requirements.
6.How does Aetrix verify that AP5002SG-13 is sourced from the original manufacturer or authorized distributors?
All AP5002SG-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 AP5002SG-13 meets industry standards.
7.What is the process for return or replacement of AP5002SG-13?
All AP5002SG-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP5002SG-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 AP5002SG-13 part is unused and in its original packaging.
Return procedure for AP5002SG-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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