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Diodes Incorporated AP64202QSP-13
- Part No.:
- AP64202QSP-13
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
AP64202QSP-13.pdf
- Description:
- IC REG BUCK ADJ 2A 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,347
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Product details
Overview
AP64202QSP-13 from Diodes Incorporated is an AEC-Q100 Grade 1 automotive synchronous buck converter with integrated 150mΩ high-side and 80mΩ low-side MOSFETs, 3.8V–40V input range, 2A continuous output, 0.8V ±1% reference, and SO-8EP package. It delivers regulated 5V/3.3V power to infotainment systems and instrument clusters under wide VIN transients.
For engineers reviewing the AP64202QSP-13 datasheet, AP64202QSP-13 pinout, AP64202QSP-13 application, or AP64202QSP-13 equivalent, key selection criteria include EMI-reduction features (FSS ±6%, ringing-free gate drive), adjustable soft-start, precision EN threshold (1.18V), and thermal shutdown at +160°C - all validated for automotive ambient operation from –40°C to +125°C.
Technical Context
The AP64202QSP-13 employs fixed-frequency peak current mode control with internal slope compensation to prevent subharmonic oscillation above 50% duty cycle. Its proprietary multi-level gate driver ensures fast switching edge rates while eliminating SW node ringing - directly reducing high-frequency radiated EMI without efficiency penalty.
It supports dual frequency control: resistor-programmed (100kHz–2.2MHz) via RT/CLK pin or external clock synchronization (100kHz–2.2MHz) using PLL-based tracking. The device operates in forced PWM at heavy loads and transitions to PFM mode below ~600mA peak inductor current, achieving 25μA quiescent current and 88% efficiency at 5mA load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 3.8V to 40V DC - supports automotive battery transients including cold-crank (4.5V) and load-dump (40V). |
| Output Current | 2A continuous - sustains full load across –40°C to +125°C ambient with SO-8EP thermal resistance θJA = 45°C/W. |
| Feedback Reference | 0.800V ±1% - enables precise output regulation (e.g., 5.0V ±1.5% with 52.3kΩ/10kΩ divider). |
| Switching Frequency | Adjustable 100kHz–2.2MHz - allows optimization of inductor size (e.g., 10μH at 500kHz) vs. efficiency. |
| Quiescent Current | 25μA typical in PFM no-load - extends battery runtime in always-on automotive modules. |
| EMI Reduction | FSS ±6% jitter + ringing-free gate drive - reduces peak radiated emissions without external snubbers or shielding. |
| Protection Features | UVLO (3.1V fall/3.7V rise), OVP (1.1×0.8V), cycle-by-cycle OCP (2.5–4.5A), thermal shutdown (+160°C) - ensures robust fault recovery in vehicle environments. |
Pinout & Package
The AP64202QSP-13 is housed in a thermally enhanced SO-8EP (exposed pad) package. The exposed thermal pad (Pin 9) must be soldered to a PCB ground plane for optimal thermal performance (θJC = 5°C/W) and electrical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BST (1) | High-side gate drive boost supply | Requires 100nF BST-to-SW capacitor to sustain high-side MOSFET turn-on during 100% duty cycle. |
| VIN (2) | Main power input | Accepts 3.8V–40V; bypassed with ≥2×10μF ceramic capacitors to suppress switching noise. |
| EN (3) | Enable control with UVLO adjustment | Logic-high threshold = 1.18V; internal 1.5μA pull-up enables auto-start when floating. |
| RT/CLK (4) | Frequency programming/synchronization | Connect 200kΩ to GND for 500kHz; accepts external clock up to 2.2MHz with PLL lock. |
| FB (5) | Output voltage feedback sensing | Compares resistive divider output against 0.8V reference to regulate VOUT with ±1% accuracy. |
| SS (6) | Soft-start timing control | Internal 4μA current charges external CSS (e.g., 10nF → 3ms soft-start) to limit inrush current. |
| GND (7) | Power ground reference | Common return for control circuitry and low-side MOSFET source; tied to exposed pad. |
| SW (8) | Power switching node | Drives external inductor; high dv/dt node requiring tight layout and Kelvin connection to minimize EMI. |
| EXPOSED PAD (9) | Thermal and electrical ground path | Must be soldered to ≥4-layer PCB ground plane; failure causes thermal derating and instability. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation in automotive power domains per IATF 16949 manufacturing. |
| Integrated MOSFETs | 150mΩ HS + 80mΩ LS RDS(ON) - eliminates external FETs and gate drivers, reducing BOM count and layout area. |
| Frequency Spread Spectrum (FSS) | ±6% switching frequency jitter - spreads EMI energy across bandwidth, easing CISPR 25 Class 5 compliance. |
| Proprietary gate driver | Ringing-free SW node with preserved slew rates - reduces high-frequency radiated emissions without sacrificing efficiency. |
| Low-dropout (LDO) mode | Enables regulation near VIN - supports high-duty-cycle operation (e.g., 12V→10V) without dropout loss. |
Applications
| Automotive Infotainment | Instrument Cluster Power |
|---|---|
Use Scenario: Powering LCD displays, touch controllers, and audio codecs in head units with 12V battery input subject to load dump. IC Role / Device Role / Timing Role: Primary 5V/3.3V step-down regulator with fast transient response to handle burst-mode DSP loads. Use Value: FSS and ringing-free switching reduce conducted EMI into sensitive RF receivers; soft-start prevents display flicker during ignition. | Use Scenario: Supplying microcontroller, CAN transceiver, and backlight LED drivers in digital dashboards. IC Role / Device Role / Timing Role: Main system rail regulator with UVLO programmability to coordinate startup with engine control unit (ECU) wake-up signals. Use Value: Precision 1.18V EN threshold enables reliable sequencing; thermal shutdown protects against enclosed dashboard temperatures. |
| Telematics Control Unit | ADAS Camera Module |
Use Scenario: Providing stable 3.3V power to LTE modems and GNSS receivers in connected car telematics boxes. IC Role / Device Role / Timing Role: High-efficiency buck converter operating in PFM mode during cellular idle states to extend battery backup time. Use Value: 25μA IQ and 88% light-load efficiency minimize parasitic drain on backup supercapacitors. | Use Scenario: Delivering clean 1.8V/2.8V rails to image sensors and ISP processors in rear-view or surround-view cameras. IC Role / Device Role / Timing Role: Low-noise power stage with minimal output ripple (<20mV p-p at 2A) to prevent sensor pattern noise. Use Value: Integrated loop compensation and low VFB drift (±0.5mV over –40°C to +125°C) ensure consistent exposure calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4420AGL-A-Z | 40V/2A, but requires external compensation; no FSS; QFN-10 package | Lacks integrated EMI reduction features; higher layout sensitivity for CISPR 25 compliance | Choose if cost-sensitive and EMI filtering can be added externally; verify thermal performance in SO-8EP footprint. |
| TPS54240QDGQRQ1 | 40V/2.5A, adjustable compensation, no integrated FSS, MSOP-10 package | Higher current rating but larger solution size; requires external RC network for EMI mitigation | Prefer for designs needing >2A or flexible loop tuning; AP64202QSP-13 offers smaller footprint and lower EMI design effort. |
Compared with MPQ4420AGL-A-Z and TPS54240QDGQRQ1, the AP64202QSP-13 delivers lower system-level EMI risk through monolithic FSS and ringing-free gate drive, reduces design iteration with internal compensation, and maintains AEC-Q100 Grade 1 compliance in a compact SO-8EP package - making it optimal for space-constrained, EMI-sensitive automotive modules.
Availability
AP64202QSP-13 is available at Aetrix Electronics and suitable for automotive infotainment, instrument cluster, and telematics applications requiring stable component supply, AEC-Q100 traceability, and long-term production continuity.
Supply support for AP64202QSP-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-reliability power management, signal integrity, and protection solutions for automotive, industrial, and consumer markets.
The AP64202QSP-13 belongs to Diodes' automotive-grade DC-DC converter product line, engineered specifically for EMI-critical, high-transient automotive subsystems where integration, thermal robustness, and qualification rigor are mandatory.
FAQ
What is the minimum input voltage required for AP64202QSP-13 to start regulation?
The AP64202QSP-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 drops below 3.1V. The EN pin's 1.18V logic-high threshold allows external UVLO adjustment using a resistive divider, enabling startup at higher voltages like 6V or 9V if needed for system sequencing.
Can AP64202QSP-13 operate with a 24V nominal input and 5V output at full 2A load?
Yes - the AP64202QSP-13 supports 24V input and delivers 5V/2A continuously. At VIN=24V, VOUT=5V, and fSW=500kHz, efficiency reaches ~85% (per Figure 5), and junction temperature remains within limits (TJ ≤ +150°C) when mounted on a 4-layer PCB with the recommended SO-8EP thermal pad layout. Thermal shutdown activates only above +160°C, providing safety margin.
How does the Frequency Spread Spectrum (FSS) function impact EMC testing?
FSS introduces ±6% jitter to the switching frequency, spreading radiated and conducted noise energy across a wider bandwidth instead of concentrating at harmonics of a fixed frequency. This lowers peak emission amplitudes by up to 10dB in narrowband measurements, significantly easing compliance with CISPR 25 Class 5 limits for automotive electronics without requiring additional ferrite beads or shielded inductors.
Is external compensation required for AP64202QSP-13 stability?
No - the AP64202QSP-13 integrates a complete Type II compensation network, eliminating the need for external RC components on the COMP node. Stability is guaranteed across the full 0.8V–VIN output range and 100kHz–2.2MHz frequency band with standard output LC filters (e.g., 10μH inductor + 44μF total capacitance). This simplifies layout and improves production yield versus externally compensated alternatives.
AP64202QSP-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 ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO-EP
AP64202QSP-13 FAQ
1.How can I place an order for AP64202QSP-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP64202QSP-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 AP64202QSP-13 reliable?
The price and inventory of AP64202QSP-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP64202QSP-13 is usually 5 days.
3.What payment methods are accepted for AP64202QSP-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP64202QSP-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP64202QSP-13?
AP64202QSP-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP64202QSP-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 AP64202QSP-13?
For technical support, including AP64202QSP-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP64202QSP-13 requirements.
6.How does Aetrix verify that AP64202QSP-13 is sourced from the original manufacturer or authorized distributors?
All AP64202QSP-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 AP64202QSP-13 meets industry standards.
7.What is the process for return or replacement of AP64202QSP-13?
All AP64202QSP-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP64202QSP-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 AP64202QSP-13 part is unused and in its original packaging.
Return procedure for AP64202QSP-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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