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Diodes Incorporated AP64100QSP-13
- Part No.:
- AP64100QSP-13
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
AP64100QSP-13.pdf
- Description:
- IC REG BUCK ADJ 1A 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,999
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Product details
Overview
AP64100QSP-13 from Diodes Incorporated is an AEC-Q100 Grade 1 automotive synchronous buck converter with integrated 150 mΩ high-side and 80 mΩ low-side MOSFETs, supporting 3.8 V to 40 V input, 0.8 V to VIN adjustable output, 1 A continuous current, and 100 kHz–2.2 MHz programmable switching frequency. It delivers up to 88% efficiency at 5 mA light load and is deployed in automotive instrument clusters for stable 5 V/3.3 V rail generation under wide temperature and EMI-constrained conditions.
For engineers reviewing the AP64100QSP-13 datasheet, AP64100QSP-13 pinout, AP64100QSP-13 application, or AP64100QSP-13 equivalent, this page provides verified technical context on EMI-reduction architecture (ringing-free gate drive + ±6% FSS), precision enable threshold (1.18 V), cycle-by-cycle OCP, thermal shutdown (160 °C), and SO-8EP thermal performance (θJA = 45 °C/W).
Technical Context
The AP64100QSP-13 implements fixed-frequency peak current mode control with internal slope compensation to prevent subharmonic oscillation above 50% duty cycle. Its proprietary multi-level gate driver suppresses SW node ringing without degrading rise/fall times, directly reducing high-frequency radiated EMI.
Frequency Spread Spectrum (±6% jitter) spreads conducted/radiated noise across a wider band, while the RT/CLK pin supports both resistor-based timing (100–2200 kHz) and external clock synchronization (100–2200 kHz) via PLL locking. The 0.8 V ±1% reference and 2 ms soft-start ensure precise output regulation and controlled startup.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 3.8 V to 40 V DC - supports direct battery connection across cold-crank (4.5 V) to load-dump (40 V) transients in automotive systems. |
| Output Current | 1 A continuous - sustains full-rated load at TA = 125 °C with SO-8EP package and proper PCB thermal layout. |
| fSW Range | 100 kHz to 2.2 MHz - enables trade-off between inductor size (higher fSW → smaller L) and light-load efficiency (lower fSW → lower switching loss). |
| RDS(ON) HS/LS | 150 mΩ / 80 mΩ - integrated MOSFETs minimize conduction loss and eliminate external power switch selection effort. |
| IQ (PFM) | 25 µA typical - enables >88% efficiency at 5 mA load, critical for always-on automotive modules like telematics wake-up circuits. |
| VFB Accuracy | 0.792 V to 0.808 V (±1%) - ensures tight output voltage regulation (e.g., ±1% on 5 V = ±50 mV) across -40 °C to +125 °C. |
| Thermal Shutdown | 160 °C with 25 °C hysteresis - protects die during sustained overload or poor heatsinking; resumes operation only after junction cools to 135 °C. |
Pinout & Package
AP64100QSP-13 is housed in an SO-8EP (exposed pad) package with 9 terminals (8 pins + exposed thermal pad). The exposed pad must be soldered to a GND-connected copper plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BST | High-side gate drive bootstrap supply | Requires 100 nF ceramic capacitor to SW to sustain high-side MOSFET turn-on; improper placement causes shoot-through or dropout. |
| VIN | Main power input | Supplies IC bias and power stage; requires ≥2×10 µF low-ESR input capacitance near pin to suppress switching noise and handle load-dump energy. |
| EN | Enable control with UVLO adjustment | Logic-high threshold = 1.18 V; internal 1.5 µA pull-up allows floating startup; external resistor divider enables custom VIN UVLO thresholds. |
| RT/CLK | Frequency programming/synchronization | Connect RT resistor to GND for internal oscillator; apply external clock (100–2200 kHz) for system-level timing alignment and EMI reduction. |
| FB | Output voltage feedback sensing | Compares resistive divider output against 0.8 V reference; sets VOUT = 0.8 × (1 + R1/R2); accuracy directly determines output regulation error. |
| COMP | Loop compensation node | Accepts external RC network to stabilize control loop; improper compensation causes instability or slow transient response. |
| GND | Power ground reference | Primary return path for high-current switching; must be low-impedance and tied to exposed pad for optimal thermal and noise performance. |
| SW | Switching node output | Drives external inductor; high di/dt node requiring minimized trace area and tight coupling to GND to reduce EMI radiation. |
| EXPOSED PAD | Thermal and electrical ground | Electrically connected to GND internally; mandatory solder connection to PCB ground plane for θJA = 45 °C/W and reliable 1 A operation. |
Key Features
| Feature | Design Value |
|---|---|
| Proprietary ringing-free gate driver | Eliminates SW node oscillation without slowing edge rates, reducing high-frequency EMI peaks by >10 dBµV in CISPR 25 Class 5 testing. |
| Frequency Spread Spectrum (FSS) | ±6% switching frequency jitter spreads spectral energy, lowering peak conducted emissions by up to 15 dBµV at fundamental harmonics. |
| Low-dropout (LDO) mode | Enables regulation when VIN approaches VOUT, extending usable input range in battery-depleted conditions (e.g., VIN = 3.9 V → VOUT = 3.3 V). |
| Precision EN threshold (1.18 V) | Allows accurate, resistor-programmable UVLO points (e.g., 6 V rising / 5.5 V falling) without external supervisor ICs. |
| Cycle-by-cycle peak current limit | Triggers at 1.5–3.5 A (typ. 2.2 A) per cycle to protect MOSFETs during short-circuit or overload, with fast recovery upon fault clearance. |
Applications
| Automotive Instrument Clusters | Automotive Infotainment Systems |
|---|---|
|
Use Scenario: Powering digital gauges, TFT displays, and microcontrollers in dashboard assemblies exposed to -40 °C to +105 °C ambient and ISO 7637-2 pulse transients. IC Role / Device Role / Timing Role: Primary 5 V/3.3 V DC-DC regulator delivering clean, EMI-compliant power with fast load transient response (<100 µs recovery from 50 mA → 500 mA step). Use Value: Integrated MOSFETs and FSS eliminate need for external EMI filters, reducing BOM count by 3–5 components versus discrete solutions. |
Use Scenario: Supplying USB-C PD controllers, audio codecs, and touch-screen processors in head units operating under engine cranking (4.5 V) and load dump (40 V) conditions. IC Role / Device Role / Timing Role: High-efficiency buck converter with PFM mode enabling <25 µA quiescent current during standby, meeting OEM "always-on" low-power requirements. Use Value: Adjustable frequency (100 kHz–2.2 MHz) allows optimization for compact 2.2 MHz designs or high-efficiency 400 kHz layouts with larger, lower-cost inductors. |
| Advanced Driver Assistance Systems (ADAS) | Automotive Telematics Control Units (TCUs) |
|
Use Scenario: Generating stable 1.2 V core and 3.3 V I/O rails for radar SoCs and camera ISPs in ADAS ECUs requiring ASIL-B compliance and low EMI. IC Role / Device Role / Timing Role: Synchronous buck with thermal shutdown (160 °C) and OVP (110% of 0.8 V) ensures safe operation during sensor fusion processor thermal throttling events. Use Value: Ringing-free SW node meets CISPR 25 Class 5 radiated emission limits without ferrite beads or shielding cans, cutting mechanical cost. |
Use Scenario: Providing regulated 3.3 V power to LTE modems, GNSS receivers, and CAN FD transceivers in cellular-connected vehicle gateways. IC Role / Device Role / Timing Role: Automotive-grade buck converter with AEC-Q100 Grade 1 qualification and PPAP capability for Tier-1 production traceability. Use Value: External clock sync (RT/CLK) enables synchronization with baseband processor clocks to avoid beat-frequency interference in RF-sensitive modem sections. |
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 | Higher 2.5 A rating, 4.5–60 V input, but no FSS or ringing-free gate drive; θJA = 50 °C/W in QFN-10. | Preferred for higher-current ADAS domain controllers; less suitable for strict CISPR 25 Class 5 EMI-limited infotainment modules. | Select MPQ4420AGL-A-Z only if >1 A output and >40 V input margin are required; AP64100QSP-13 offers superior EMI performance at 1 A. |
| TPS54340QDGQRQ1 | 3.5–42 V input, 3.5 A, but uses external MOSFETs; no integrated FSS; 14-pin HTSSOP with higher θJA (60 °C/W). | Suitable for thermally relaxed designs where board space allows discrete FETs and external compensation; lacks AP64100Q's EMI-optimized integration. | Choose TPS54340QDGQRQ1 only when design flexibility (e.g., custom FET selection, adjustable dead time) outweighs BOM simplification and EMI advantages of AP64100QSP-13. |
Compared with MPQ4420AGL-A-Z and TPS54340QDGQRQ1, AP64100QSP-13 delivers best-in-class EMI suppression (FSS + ringing-free gate drive) and smallest solution footprint for 1 A automotive rails, while trading off maximum current and input voltage headroom for tighter thermal and EMC compliance.
Availability
AP64100QSP-13 is available at Aetrix Electronics and suitable for automotive instrument clusters, ADAS ECUs, and telematics control units requiring stable component supply, AEC-Q100 qualification, and long-term production continuity.
Supply support for AP64100QSP-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 manufacturer specializing in discrete, analog, and mixed-signal devices for automotive, industrial, and consumer markets, with IATF 16949-certified manufacturing facilities.
The AP64100QSP-13 belongs to Diodes' automotive power management portfolio, designed specifically for EMI-sensitive, high-reliability 12 V/24 V battery-fed systems requiring AEC-Q100 Grade 1 operation and PPAP-ready documentation.
FAQ
What is the minimum input voltage required for AP64100QSP-13 to start switching?
The AP64100QSP-13 has a power-on reset (POR) threshold of 3.5 V (typical) and an undervoltage lockout (UVLO) falling threshold of 3.1 V. It begins switching once VIN rises above 3.5 V and remains enabled until VIN drops below 3.1 V. The EN pin can override this behavior if externally driven.
Can AP64100QSP-13 operate in forced PWM mode at all load levels?
No - AP64100QSP-13 defaults to forced PWM under heavy load but automatically transitions to PFM mode below ~400 mA output current. In PFM, it clamps COMP voltage and disables low-side MOSFET conduction at zero-cross (60 mA), achieving 25 µA IQ and 88% efficiency at 5 mA.
How does the RT/CLK pin function when both resistor timing and external clock are present?
When an external clock signal is applied to RT/CLK, the internal oscillator synchronizes via PLL and follows the external frequency. If the external clock stops, the device automatically reverts to resistor-set frequency within one cycle. No manual mode switching is required.
Is the exposed thermal pad of AP64100QSP-13 electrically isolated?
No - the exposed pad is internally connected to GND and must be soldered to a PCB GND plane. It serves dual roles: primary thermal dissipation path (θJC = 5 °C/W) and low-impedance GND return for high-frequency switching currents. Leaving it unconnected violates thermal and electrical specifications.
AP64100QSP-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
AP64100QSP-13 FAQ
1.How can I place an order for AP64100QSP-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP64100QSP-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 AP64100QSP-13 reliable?
The price and inventory of AP64100QSP-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP64100QSP-13 is usually 5 days.
3.What payment methods are accepted for AP64100QSP-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP64100QSP-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP64100QSP-13?
AP64100QSP-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP64100QSP-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 AP64100QSP-13?
For technical support, including AP64100QSP-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP64100QSP-13 requirements.
6.How does Aetrix verify that AP64100QSP-13 is sourced from the original manufacturer or authorized distributors?
All AP64100QSP-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 AP64100QSP-13 meets industry standards.
7.What is the process for return or replacement of AP64100QSP-13?
All AP64100QSP-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP64100QSP-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 AP64100QSP-13 part is unused and in its original packaging.
Return procedure for AP64100QSP-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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