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Diodes Incorporated AP64202SP-13
- Part No.:
- AP64202SP-13
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
AP64202SP-13.pdf
- Description:
- IC REG BUCK ADJ 2A 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:7,583
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Product details
Overview
AP64202SP-13 from Diodes Incorporated is a 2A synchronous buck DC-DC converter with 3.8V–40V input range, integrated 150mΩ high-side and 80mΩ low-side MOSFETs, 0.8V ±1% reference, 25μA quiescent current in PFM mode, and SO-8EP package. It delivers regulated output voltage (0.8V to VIN) for point-of-load conversion in industrial and consumer power systems.
For engineers reviewing the AP64202SP-13 datasheet, AP64202SP-13 pinout, AP64202SP-13 application, or AP64202SP-13 equivalent, key selection criteria include EMI-reduction features (FSS ±6% jitter, ringing-free gate driver), adjustable soft-start, precision enable threshold (1.18V), and internal loop compensation eliminating external compensation components.
Technical Context
The AP64202 employs fixed-frequency peak current mode control with slope compensation to prevent subharmonic oscillation above 50% duty cycle. Its proprietary multi-level gate driver ensures fast switching edge rates while suppressing SW node ringing-critical for radiated EMI compliance without efficiency penalty.
Frequency Spread Spectrum (FSS) modulates switching frequency by ±6% to disperse spectral energy, reducing both conducted and radiated emissions. The device supports dual frequency setting: resistor-programmed (100kHz–2.2MHz) or external clock synchronization (100kHz–2.2MHz) via RT/CLK pin with PLL-based tracking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 3.8V to 40V DC - supports wide-input industrial and automotive battery-supplied rails without pre-regulation. |
| IOUT Max | 2A continuous - sufficient for mid-power point-of-load applications including network routers and home audio amplifiers. |
| VFB Accuracy | 0.792V to 0.808V (±1%) - enables precise output regulation across temperature and load, critical for stable 3.3V/5V system rails. |
| IQ (PFM) | 25μA typical - minimizes standby power loss in always-on systems like smart home hubs and IoT gateways. |
| fSW Range | 100kHz to 2.2MHz - allows trade-off between inductor size (higher fSW → smaller L) and conduction loss (lower fSW → higher efficiency at heavy load). |
| RDS(ON) HS/Low-Side | 150mΩ / 80mΩ - integrated MOSFETs reduce BOM count and PCB area while enabling >88% efficiency at 5mA light load. |
| OVP Threshold | +10% over target VOUT - clamps output during sudden load drops to protect downstream logic and analog circuitry. |
Pinout & Package
AP64202SP-13 is housed in an SO-8EP (Standard) package with exposed thermal pad (Pin 9), optimized for thermal dissipation (θJA = 45°C/W on 4-layer FR-4 board). The exposed pad must be soldered to GND plane for safe operation and thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BST (1) | High-side gate drive boost supply | Requires 100nF capacitor to SW to sustain gate drive voltage during high-side conduction; enables efficient 150mΩ MOSFET switching. |
| VIN (2) | Main power input | Supplies IC bias and power stage; accepts 3.8V–40V; requires bulk bypass capacitance to suppress switching noise. |
| EN (3) | Enable control with UVLO adjustment | Digital input with 1.18V rising threshold; internal 1.5μA pull-up enables auto-start; supports external resistive UVLO programming. |
| RT/CLK (4) | Frequency setting/synchronization | Configures oscillator via RT resistor or accepts external clock (100kHz–2.2MHz); PLL ensures seamless transition if clock stops. |
| FB (5) | Output voltage feedback | Senses resistive divider ratio; 0.8V reference sets VOUT = 0.8V × (1 + R1/R2); enables accurate programmable outputs. |
| SS (6) | Soft-start timing control | Internal 4μA current charges external capacitor; controls ramp rate of output voltage to limit inrush current. |
| GND (7) | Power ground reference | Common return for control circuitry and power stage; must be low-impedance path to minimize noise coupling. |
| SW (8) | Switching node output | Connects to inductor; carries high di/dt current; layout critical for EMI and efficiency; tied to BST capacitor. |
| EXPOSED PAD (9) | Thermal and electrical ground | Must be soldered to PCB GND plane; primary heat dissipation path; improves θJC to 5°C/W and thermal reliability. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated loop compensation | Eliminates external Type-II/III compensation network - reduces design time and component count while ensuring stability across operating conditions. |
| Proprietary ringing-free gate driver | Suppresses SW node oscillation without slowing rise/fall times - directly lowers radiated EMI peaks in CISPR 22/32 Class B testing. |
| Frequency Spread Spectrum (FSS) | ±6% switching frequency jitter spreads EMI energy across bandwidth - reduces peak emission amplitude by up to 10dB in narrowband measurements. |
| Adjustable soft-start | External capacitor (e.g., 10nF → 3ms ramp) prevents output overshoot and limits input inrush - essential for multi-rail sequencing. |
| Precision enable threshold | 1.18V ±70mV rising threshold enables reliable UVLO reconfiguration using external resistor divider - supports custom input brown-out behavior. |
Applications
| Network Systems | Home Audio Equipment |
|---|---|
|
Use Scenario: Powering Ethernet PHYs, PoE controllers, and switch ASICs in enterprise routers and managed switches. IC Role / Device Role / Timing Role: Primary 5V/3.3V point-of-load regulator delivering clean, low-noise DC from 12V/24V backplane rails. Use Value: FSS and ringing-free switching meet EN 55032 Class B conducted/radiated EMI limits without added ferrites or shielding. |
Use Scenario: Supplying digital signal processors, DACs, and amplifier bias rails in compact stereo receivers and soundbars. IC Role / Device Role / Timing Role: High-efficiency buck converter operating in PFM mode during standby to maintain <25μA system quiescent current. Use Value: 88% efficiency at 5mA load extends battery backup runtime and reduces thermal stress in enclosed enclosures. |
| Power Tools | White Goods Control Boards |
|
Use Scenario: Generating 3.3V MCU and sensor rails from variable 18V–36V Li-ion battery packs in cordless drills and impact drivers. IC Role / Device Role / Timing Role: Input-wide buck regulator with robust UVLO (3.1V falling) and thermal shutdown (+160°C) for harsh motor-drive environments. Use Value: Integrated 150mΩ/80mΩ MOSFETs eliminate discrete power stage, reducing solution size and improving reliability under vibration. |
Use Scenario: Providing isolated 5V logic supply and 3.3V microcontroller rail in washing machine main control units and refrigerator displays. IC Role / Device Role / Timing Role: Primary DC-DC converter handling wide-line transients (up to 40V surge) and cold-crank conditions in appliance AC/DC front-ends. Use Value: Adjustable soft-start and OVP (+10%) prevent latch-up during compressor startup surges and protect display drivers from overvoltage faults. |
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 (Monolithic Power) | 3.3V–36V input, 0.8V reference, 2A, no FSS or ringing suppression; requires external compensation. | Lacks integrated EMI reduction features; suitable only where board-level filtering is acceptable. | Choose when cost sensitivity outweighs EMI certification requirements and layout space permits external compensation. |
| TPS54202HDDCR (Texas Instruments) | 4.5V–28V input, 0.8V reference, 2A, 25μA IQ, but no FSS; includes Eco-mode and integrated boot diode. | Lower VIN range excludes 36V+ battery or industrial 40V bus use; lacks SO-8EP thermal pad optimization. | Select for 12V/24V systems prioritizing TI ecosystem support and Eco-mode light-load efficiency over wide-VIN or EMI headroom. |
Compared with MP2451DT-LF-Z and TPS54202HDDCR, the AP64202SP-13 uniquely combines 3.8V–40V operation, integrated EMI mitigation (FSS + ringing-free driver), and SO-8EP thermal performance-making it optimal for certified, space-constrained, wide-input industrial power supplies.
Availability
AP64202SP-13 is available at Aetrix Electronics and suitable for distributed power bus supplies, power tools, and white goods control boards requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for AP64202SP-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 power management ICs, specializing in high-reliability, application-optimized solutions for industrial, computing, and consumer markets.
The AP64202 belongs to Diodes' high-efficiency, EMI-optimized buck converter product line-designed specifically for wide-input, low-quiescent-current, and regulatory-compliant power delivery in space- and noise-sensitive applications.
FAQ
What is the minimum input voltage required for AP64202SP-13 to start regulation?
The AP64202SP-13 has a power-on reset (POR) threshold of 3.5V (typical) and an undervoltage lockout (UVLO) falling threshold of 3.1V. Regulation begins once VIN rises above 3.5V and remains enabled until VIN falls below 3.1V. The EN pin can be used to adjust these thresholds externally via a resistive divider.
Does AP64202SP-13 require external compensation components?
No. The AP64202SP-13 integrates a complete loop compensation network, eliminating the need for external Type-II or Type-III compensation components. This simplifies design, reduces BOM count, and ensures stable operation across all recommended input/output conditions without tuning.
How does the Frequency Spread Spectrum (FSS) function in AP64202SP-13?
FSS introduces ±6% jitter to the switching frequency, spreading electromagnetic energy across a wider spectrum. This reduces peak radiated and conducted emissions at any single frequency-enabling compliance with CISPR 22/32 Class B standards without additional filtering or shielding components.
Can AP64202SP-13 operate with an external clock source?
Yes. The RT/CLK pin accepts an external clock signal from 100kHz to 2.2MHz. The internal PLL synchronizes the switching frequency to the external clock. If the external clock stops, the device automatically reverts to resistor-programmed frequency set by the RT-to-GND resistor value.
AP64202SP-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:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.8V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 40V
- Current - Output:
- 2A
- Frequency - Switching:
- 100kHz ~ 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO-EP
AP64202SP-13 FAQ
1.How can I place an order for AP64202SP-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP64202SP-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 AP64202SP-13 reliable?
The price and inventory of AP64202SP-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP64202SP-13 is usually 5 days.
3.What payment methods are accepted for AP64202SP-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP64202SP-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP64202SP-13?
AP64202SP-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP64202SP-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 AP64202SP-13?
For technical support, including AP64202SP-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP64202SP-13 requirements.
6.How does Aetrix verify that AP64202SP-13 is sourced from the original manufacturer or authorized distributors?
All AP64202SP-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 AP64202SP-13 meets industry standards.
7.What is the process for return or replacement of AP64202SP-13?
All AP64202SP-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP64202SP-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 AP64202SP-13 part is unused and in its original packaging.
Return procedure for AP64202SP-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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