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Diodes Incorporated AP6502ASP-13
- Part No.:
- AP6502ASP-13
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
AP6502ASP-13.pdf
- Description:
- IC REG BUCK ADJ 2A 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,696
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Product details
Overview
AP6502ASP-13 from Diodes Incorporated is a 240 kHz, 4.75–23 V input, synchronous step-down DC/DC buck converter with integrated 130 mΩ high-side and low-side MOSFETs, delivering up to 2 A continuous output current at up to 95% efficiency. It regulates adjustable output voltages from 0.925 V to 20 V and features current-mode control for fast transient response in FPGA, DSP, and ASIC power supplies.
For engineers reviewing the AP6502ASP-13 datasheet, AP6502ASP-13 pinout, AP6502ASP-13 application, or AP6502ASP-13 equivalent, key selection criteria include its 240 kHz fixed-frequency operation, 0.925 V feedback reference, programmable soft-start via external capacitor, thermal shutdown at +160 °C, and SO-8EP package with exposed thermal pad.
Technical Context
The AP6502ASP-13 implements peak-current-mode control with internal slope compensation to suppress subharmonic oscillation at half-switching frequency. Its error amplifier (transconductance = 1000 µA/V) drives an external COMP node for loop stabilization using RC networks.
It integrates dual N-channel MOSFETs (RDS(ON) = 130 mΩ each), supports cycle-by-cycle overcurrent protection with fold-back frequency reduction to 80 kHz, and includes UVLO (4.05 V rising threshold), EN lockout hysteresis (220 mV), and OVP triggering at 1.1 V on FB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 4.75 V to 23 V - supports wide-input industrial and consumer rails including 5 V, 12 V, and 19 V adapters. |
| Output Current | 2 A continuous - sufficient for powering mid-tier FPGAs, DSPs, and SoCs without external boost stages. |
| Switching Frequency | 240 kHz (typ.) - balances EMI performance and inductor size; enables use of standard 10 µH power inductors. |
| Feedback Voltage | 0.925 V ±25 mV - sets precise output regulation; allows accurate 3.3 V, 2.5 V, and 1.8 V generation with common resistor ratios. |
| RDS(ON) | 130 mΩ (HS & LS) - minimizes conduction loss at 2 A, enabling >92% efficiency at 12 VIN/3.3 VOUT. |
| Soft-Start | Programmable via SS pin - 6 µA internal current source; 0.1 µF capacitor yields 15 ms ramp, limiting inrush into downstream capacitance. |
| Thermal Shutdown | +160 °C with ~40 °C hysteresis - protects die during sustained overload or poor PCB thermal design. |
Pinout & Package
The AP6502ASP-13 is housed in a Green SO-8EP (exposed pad) package compliant with RoHS and halogen-free standards. The exposed thermal pad (EP) must be soldered to PCB ground plane for optimal θJA = 74 °C/W performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 BS | Bootstrap supply for high-side gate driver | Requires ≥0.01 µF ceramic capacitor from BS to SW to sustain high-side MOSFET turn-on; critical for duty cycle >90%. |
| 2 IN | Main power input | Accepts 4.75–23 V; requires local bulk bypass (≥10 µF ceramic) to suppress switching noise and support peak current demand. |
| 3 SW | Switching node | Connects to inductor input; carries high di/dt; must be routed short and wide to minimize EMI and voltage spikes. |
| 4 GND | Power and signal ground | Primary return path; EP pad must be connected directly to this pin's copper pour for thermal and noise integrity. |
| 5 FB | Output voltage feedback | Senses resistive divider output; 0.925 V reference enables precise VOUT setting; sensitive to noise-requires guard ring and short trace. |
| 6 COMP | Loop compensation node | Output of transconductance error amplifier; external RC network sets pole-zero placement for stability across load and line variations. |
| 7 EN | Enable control input | Logic-compatible (0.7–0.9 V rising threshold); 100 kΩ pull-up to IN ensures automatic startup; 2.2 V lockout prevents erratic enable at marginal voltages. |
| 8 SS | Soft-start timing control | 6 µA internal current charges external capacitor; floating disables soft-start; essential for preventing overshoot into large output capacitors. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Stage | Dual 130 mΩ N-MOSFETs eliminate external switch selection, reduce BOM count, and simplify layout for compact 2 A buck designs. |
| Current-Mode Control | Enables inherent line/load regulation and wide bandwidth (>100 kHz) for <100 µs recovery from 1 A → 2 A load steps. |
| Programmable Soft-Start | Prevents output overshoot and inrush current into typical 100–470 µF output capacitors used in FPGA core supplies. |
| Comprehensive Protection | OCP (4.4 A HS limit), thermal shutdown (+160 °C), UVLO (4.05 V), and OVP (1.1 V on FB) ensure robust operation under fault conditions. |
| SO-8EP Thermal Design | Exposed pad reduces junction-to-ambient thermal resistance by >30% vs. standard SO-8, supporting 2 A continuous load at +85 °C ambient. |
Applications
| Gaming Console Core Supply | FPGA I/O Bank Power |
|---|---|
Use Scenario: Providing stable 1.8 V or 2.5 V to GPU memory interfaces and controller logic in compact gaming hardware. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering regulated core voltage with tight transient response to burst-mode GPU loads. Use Value: Integrated MOSFETs and 240 kHz switching enable small solution size; current-mode control maintains <±2% output deviation during 1 A load steps. | Use Scenario: Powering configurable I/O banks on Xilinx or Intel FPGAs requiring multiple independent 3.3 V or 2.5 V rails. IC Role / Device Role / Timing Role: Adjustable-output buck converter configured per bank voltage requirement; EN pin enables rail sequencing. Use Value: 0.925 V reference and external resistor divider allow precise voltage matching to FPGA datasheet tolerances; soft-start prevents configuration glitches. |
| Set-Top Box SoC Core | Home Audio DSP Supply |
Use Scenario: Generating 1.2 V core voltage for ARM-based media processors in energy-efficient STB platforms. IC Role / Device Role / Timing Role: High-efficiency step-down regulator operating from 12 V intermediate bus; supports dynamic voltage scaling. Use Value: 95% peak efficiency reduces thermal load in sealed enclosures; UVLO and thermal shutdown prevent field failures during brownouts or airflow blockage. | Use Scenario: Delivering clean 3.3 V to audio DSPs and ADC/DAC subsystems in premium soundbars and AV receivers. IC Role / Device Role / Timing Role: Low-noise power source with minimized switching ripple via optimized LC filter and COMP compensation. Use Value: SO-8EP thermal pad and low RDS(ON) maintain <15 °C temperature rise at full load, preserving audio signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2451DT-LF-Z | 36 V max VIN, 0.8 V feedback, 2.2 MHz switching, no BST capacitor required | Better suited for higher-VIN industrial inputs; higher frequency enables smaller magnetics but increases EMI filtering burden | Select when input exceeds 23 V or board space constraints favor 2.2 MHz operation |
| TPS54202DRCT | 6 V max VIN, 0.6 V feedback, 500 kHz, integrated boot diode, lower quiescent current (40 µA) | Optimized for low-VIN battery-powered systems; unsuitable for 12 V/23 V adapter inputs | Select only for ≤6 V input applications where ultra-low IQ is critical |
Compared with MP2451DT-LF-Z and TPS54202DRCT, the AP6502ASP-13 uniquely balances 23 V input capability, 2 A output, and SO-8EP thermal performance-making it optimal for cost-sensitive, medium-power consumer electronics where 240 kHz EMI profile and proven reliability matter more than ultra-high frequency or ultra-low IQ.
Availability
AP6502ASP-13 is available at Aetrix Electronics and suitable for gaming consoles, set-top boxes, FPGA power systems, and home audio equipment requiring stable component supply and long-term design continuity.
Supply support for AP6502ASP-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 consumer, industrial, and automotive markets.
The AP6502A belongs to Diodes' high-integration synchronous buck converter product line, designed specifically for space-constrained, medium-current applications in consumer electronics where thermal performance, ease of layout, and cost efficiency are prioritized.
FAQ
What is the minimum recommended input voltage for reliable operation?
The AP6502ASP-13 has a guaranteed minimum input voltage of 4.75 V per datasheet specifications. Operation below 4.75 V risks UVLO activation (triggering at 4.05 V rising threshold), causing intermittent shutdown. Sustained operation at 4.5 V is not recommended due to reduced headroom for input ripple and potential instability in current-mode control loop behavior.
Can the AP6502ASP-13 be used to generate 5 V output from a 12 V input?
Yes-the AP6502ASP-13 supports 5 V output via external resistor divider on FB. Using R1 = 45.3 kΩ and R2 = 10 kΩ achieves nominal 5 V (VOUT = 0.925 × (1 + R1/R2)). Efficiency exceeds 93% at 1 A load, and the 240 kHz switching frequency allows standard 10 µH inductors with low DCR to meet ripple and transient requirements.
Is the SO-8EP package lead-free and RoHS compliant?
Yes-the AP6502ASP-13 is fully RoHS compliant per EU Directive 2011/65/EU and halogen-free ("Green" per Diodes' definition: Br < 900 ppm, Cl < 900 ppm, Sb < 1000 ppm). The SO-8EP package contains no purposely added lead and meets JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) requirements.
Does the AP6502ASP-13 require an external bootstrap capacitor?
Yes-a minimum 0.01 µF ceramic capacitor must be placed between BS and SW pins. This capacitor supplies gate drive voltage for the high-side MOSFET during its on-time. Omitting it causes immediate failure of high-side switching, resulting in no output regulation and potential damage to the internal driver circuitry.
AP6502ASP-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- 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):
- 4.75V
- Voltage - Input (Max):
- 23V
- Voltage - Output (Min/Fixed):
- 0.925V
- Voltage - Output (Max):
- 16V
- Current - Output:
- 2A
- Frequency - Switching:
- 240kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO-EP
AP6502ASP-13 FAQ
1.How can I place an order for AP6502ASP-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP6502ASP-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 AP6502ASP-13 reliable?
The price and inventory of AP6502ASP-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP6502ASP-13 is usually 5 days.
3.What payment methods are accepted for AP6502ASP-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP6502ASP-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP6502ASP-13?
AP6502ASP-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP6502ASP-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 AP6502ASP-13?
For technical support, including AP6502ASP-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP6502ASP-13 requirements.
6.How does Aetrix verify that AP6502ASP-13 is sourced from the original manufacturer or authorized distributors?
All AP6502ASP-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 AP6502ASP-13 meets industry standards.
7.What is the process for return or replacement of AP6502ASP-13?
All AP6502ASP-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP6502ASP-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 AP6502ASP-13 part is unused and in its original packaging.
Return procedure for AP6502ASP-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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