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Diodes Incorporated AP64102QSP-13
- Part No.:
- AP64102QSP-13
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
AP64102QSP-13.pdf
- Description:
- IC REG BUCK ADJ 1A 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,140
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Product details
Overview
AP64102QSP-13 from Diodes Incorporated is an AEC-Q100 Grade 1 automotive synchronous buck converter delivering 1A continuous output at up to 40V input, integrating 150mΩ high-side and 80mΩ low-side MOSFETs, with internal loop compensation, 0.8V ±1% reference, and FSS-enabled EMI reduction for infotainment power rails.
For engineers reviewing the AP64102QSP-13 datasheet, AP64102QSP-13 pinout, AP64102QSP-13 application, or AP64102QSP-13 equivalent, this device supports adjustable 100kHz–2.2MHz switching, precision EN threshold (1.18V), soft-start control, and automotive-grade thermal shutdown (160°C) in SO-8EP packaging.
Technical Context
The AP64102QSP-13 employs fixed-frequency peak current mode control with integrated slope compensation to prevent subharmonic oscillation above 50% duty cycle. Its proprietary gate driver suppresses SW node ringing without degrading rise/fall times, directly reducing high-frequency radiated EMI.
It operates in forced PWM under heavy load and transitions to PFM at light loads (≤60mA valley current), achieving 25μA quiescent current and up to 88% efficiency at 5mA. Frequency Spread Spectrum (±6% jitter) spreads conducted/radiated noise across a wider band to meet CISPR 25 Class 5 requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 3.8V to 40V DC - supports wide automotive battery transients including cold-crank (4.5V) and load-dump (40V). |
| Output Current | 1A continuous - sustains full rated load at TA = +125°C with SO-8EP thermal pad tied to GND plane. |
| Feedback Reference | 0.800V ±1% - enables precise output regulation (e.g., 5.00V ±10mV with 52.3kΩ/10kΩ divider). |
| Switching Frequency | 100kHz to 2.2MHz - adjustable via RT resistor or external clock; 500kHz typical (RT = 200kΩ) balances efficiency and size. |
| Quiescent Current | 25μA (PFM, no load) - extends battery life in always-on automotive modules like telematics. |
| Thermal Shutdown | +160°C with +25°C hysteresis - protects die during sustained overload or poor PCB thermal design. |
| EMI Features | FSS (±6% jitter) + ringing-free gate drive - reduces peak radiated emissions without LC filter redesign. |
Pinout & Package
AP64102QSP-13 is housed in a thermally enhanced SO-8EP (exposed pad) package. The exposed thermal pad (Pin 9) must be soldered to a minimum 100mm² GND copper area for θJA = 45°C/W operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BST (1) | High-side gate drive bootstrap supply | Requires 100nF ceramic capacitor to SW; enables full enhancement of 150mΩ HS MOSFET. |
| VIN (2) | Main power input | Accepts 3.8–40V; must be bypassed with ≥2×10µF low-ESR capacitors near IC for transient immunity. |
| EN (3) | Enable control with UVLO adjustment | Logic-high threshold = 1.18V; internal 1.5µA pull-up allows auto-start when floating; supports external resistor divider for custom UVLO. |
| RT/CLK (4) | Frequency setting/synchronization | Connect RT resistor to GND for internal oscillator; accept 100kHz–2.2MHz external clock for system-level timing sync. |
| FB (5) | Output voltage feedback sensing | Compares resistive divider output against 0.8V reference; error amplifier drives COMP node for regulation. |
| SS (6) | Soft-start timing control | 4µA internal current charges external capacitor; 10nF yields ~3ms ramp-prevents inrush and overshoot. |
| GND (7) | Power ground reference | Common return for VIN, SW, BST, FB, SS, EN, RT/CLK; must connect to exposed pad for thermal and EMI integrity. |
| SW (8) | Switching node output | Drives external inductor; high di/dt path requiring tight layout and Kelvin connection to minimize ringing. |
| EXPOSED PAD (9) | Thermal and electrical ground | Electrically GND; mandatory solder connection to PCB ground plane for thermal performance and EMI suppression. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for -40°C to +125°C ambient operation in automotive power systems with PPAP support. |
| Integrated dual MOSFETs | 150mΩ HS + 80mΩ LS enable >90% efficiency at 12V→5V/1A without external switches or drivers. |
| Internal loop compensation | Eliminates external Type II/III compensation network-reduces BOM count and layout sensitivity. |
| Low-dropout (LDO) mode | Maintains regulation down to VOUT = VIN − 0.5V (e.g., 12V→11.5V), supporting post-regulation in multi-rail systems. |
| Cycle-by-cycle OCP | 1.5–3.5A programmable peak current limit prevents inductor saturation and MOSFET failure during short circuits. |
| Output OVP (110% of 0.8V) | Clamps VOUT ≤ 0.88V by turning off HS and enabling LS-protects downstream 3.3V/5V logic during load dump or feedback fault. |
Applications
| Automotive Infotainment Power | Instrument Cluster Core Supply |
|---|---|
|
Use Scenario: Stable 5V/1A rail for MCU, display controller, and audio codec in head-unit designs. IC Role / Device Role / Timing Role: Primary DC-DC regulator with internal compensation and FSS to meet CISPR 25 radiated emissions limits. Use Value: Eliminates need for external EMI filters while maintaining <10mVpp output ripple at 1A load (Figure 14–15). |
Use Scenario: Compact 3.3V supply for digital gauges, CAN transceivers, and backlight drivers in space-constrained clusters. IC Role / Device Role / Timing Role: Synchronous buck with adjustable soft-start (3ms) to sequence with microcontroller reset timing. Use Value: Achieves 88% efficiency at 5mA standby current-critical for low-power "always-on" cluster memory retention. |
| Telematics Control Unit (TCU) | ADAS Camera Module Power |
|
Use Scenario: 5V rail powering LTE modem, GNSS receiver, and secure element in vehicle connectivity modules. IC Role / Device Role / Timing Role: Automotive-grade buck with EN-controlled sequencing and thermal shutdown for unattended operation. Use Value: 1μA shutdown current and 160°C thermal cutoff ensure reliability during extended parking or hot ambient exposure. |
Use Scenario: 1.8V or 2.8V bias supply for CMOS image sensors and ISP processors in surround-view cameras. IC Role / Device Role / Timing Role: Precision 0.8V reference enables accurate output setting; low-noise PFM mode minimizes sensor pixel noise. Use Value: 0.8V ±1% reference and <1% load regulation (Figure 7) maintain ADC reference stability across temperature. |
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 | 2A rating, 3.8–60V input, no FSS, requires external compensation | Better for higher-current ADAS ECUs but increases BOM and layout complexity | Select if >1A output or >40V transient tolerance is required; avoid if EMI filtering budget is constrained. |
| TPS54340QDDARQ1 | 3.5A, 3.5–42V, external MOSFETs, adjustable slope compensation | Higher flexibility for custom efficiency/EMI trade-offs but needs gate drivers and loop tuning | Choose for scalable platforms needing 1–3A range; not suitable for cost- or space-sensitive infotainment modules. |
Compared with MPQ4420AGL-A-Z and TPS54340QDDARQ1, the AP64102QSP-13 delivers optimal integration for 1A automotive rails-combining internal MOSFETs, FSS, and compensation in SO-8EP-reducing footprint by 40% and eliminating 7 external components versus the alternatives.
Availability
AP64102QSP-13 is available at Aetrix Electronics and suitable for automotive infotainment, instrument cluster, and telematics applications requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for AP64102QSP-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 semiconductor company specializing in discrete, analog, and mixed-signal solutions for automotive, industrial, and consumer markets, with IATF 16949-certified manufacturing.
The AP64102QSP-13 belongs to Diodes' automotive power management portfolio, designed specifically for compact, EMI-compliant DC-DC conversion in safety-critical vehicle subsystems.
FAQ
What is the minimum input voltage required for AP64102QSP-13 startup?
The AP64102QSP-13 has a POR (power-on reset) threshold of 3.5V (typical) and an undervoltage lockout (UVLO) falling threshold of 3.1V. Startup occurs when VIN rises above 3.5V; operation ceases below 3.1V. An external resistor divider on the EN pin can raise these thresholds to match system-level battery monitoring requirements.
Can AP64102QSP-13 operate without an external soft-start capacitor?
No-AP64102QSP-13 requires an external capacitor (e.g., 10nF) from SS to GND to control soft-start time. Without it, the internal 4μA current source cannot ramp the SS voltage, resulting in uncontrolled output voltage rise, potential overshoot, and inrush current exceeding 2A. The capacitor value directly sets ramp duration per Equation 1 in the datasheet.
How does the AP64102QSP-13 achieve EMI reduction without external snubbers?
It uses two hardware-level techniques: (1) a proprietary multi-level gate driver that damps SW node ringing while preserving fast MOSFET switching edges, and (2) Frequency Spread Spectrum (±6% jitter) that disperses energy across a 120kHz bandwidth-both verified in CISPR 25 precompliance testing per Figure 4–5 and Section 4 of the datasheet.
Is the EXPOSED PAD electrically isolated or must it be grounded?
The EXPOSED PAD is electrically connected to the internal GND plane and must be soldered to the PCB's main GND layer. Leaving it unconnected or floating causes thermal derating (θJA worsens from 45°C/W to >80°C/W), increased EMI, and potential functional failure due to unstable ground reference for BST, SW, and GND pins.
AP64102QSP-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:
- 1A
- Frequency - Switching:
- 500kHz, 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
AP64102QSP-13 FAQ
1.How can I place an order for AP64102QSP-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP64102QSP-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 AP64102QSP-13 reliable?
The price and inventory of AP64102QSP-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP64102QSP-13 is usually 5 days.
3.What payment methods are accepted for AP64102QSP-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP64102QSP-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP64102QSP-13?
AP64102QSP-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP64102QSP-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 AP64102QSP-13?
For technical support, including AP64102QSP-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP64102QSP-13 requirements.
6.How does Aetrix verify that AP64102QSP-13 is sourced from the original manufacturer or authorized distributors?
All AP64102QSP-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 AP64102QSP-13 meets industry standards.
7.What is the process for return or replacement of AP64102QSP-13?
All AP64102QSP-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP64102QSP-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 AP64102QSP-13 part is unused and in its original packaging.
Return procedure for AP64102QSP-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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