My Inquiry
My Account
Diodes Incorporated AP64501QSP-13
- Part No.:
- AP64501QSP-13
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
AP64501QSP-13.pdf
- Description:
- IC REG BUCK ADJ 5A 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:5,863
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP64501QSP-13 from Diodes Incorporated is an AEC-Q100 Grade 1 automotive synchronous buck converter delivering 5A continuous output from 3.8V–40V input, featuring integrated 45mΩ/20mΩ MOSFETs, 570kHz fixed-frequency peak current mode control, programmable soft-start (4ms with 10nF), and precision 0.8V ±1% feedback reference. It powers engine control units, ADAS camera modules, and infotainment head units requiring high EMI immunity and thermal robustness up to +125°C ambient.
For engineers reviewing the AP64501QSP-13 datasheet, AP64501QSP-13 pinout, AP64501QSP-13 application, or AP64501QSP-13 equivalent, this page delivers verified technical context on EMI-reduction architecture, SO-8EP thermal performance, UVLO programming via EN pin, and functional distinctions among automotive-grade 5A buck alternatives.
Technical Context
The AP64501QSP-13 implements fixed-frequency peak current mode control with internal 570kHz oscillator and slope compensation to prevent subharmonic oscillation above 50% duty cycle. Its proprietary multi-level gate driver eliminates switching node ringing while preserving fast rise/fall times, directly reducing high-frequency radiated EMI.
Frequency Spread Spectrum (FSS) introduces ±6% switching frequency jitter to spread conducted and radiated noise energy across a wider band. The device supports both forced PWM at heavy loads and PFM at light loads (down to 5mA), achieving 85% efficiency and 25μA quiescent current in non-switching state.
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 | 5A continuous - sustained delivery under +125°C ambient with SO-8EP package and exposed thermal pad tied to GND plane. |
| Feedback Reference | 0.8V ±1% - enables precise output regulation (e.g., 5V via 52.3kΩ/10kΩ divider) across -40°C to +125°C. |
| Switching Frequency | 570kHz typical - balances inductor size, efficiency, and EMI; FSS spreads energy over ±6% bandwidth to meet CISPR 25 Class 5. |
| RDS(ON) | 45mΩ (HS), 20mΩ (LS) - low conduction loss enables >90% efficiency at 3A/12V→5V and reduces thermal stress in compact layouts. |
| Soft-Start Time | Programmable (e.g., 4ms with 10nF) - prevents inrush current into downstream capacitors during power-up sequencing. |
| Quiescent Current | 25μA (PFM, no load) - extends battery life in always-on automotive modules like telematics and body controllers. |
Pinout & Package
AP64501QSP-13 uses the SO-8EP (exposed pad) package: 5.0mm × 6.0mm body, 1.75mm height, thermally enhanced with 9-pin layout (8 signal pins + exposed thermal pad). The exposed pad must be soldered to a PCB ground plane for thermal dissipation (θJA = 45°C/W, θJC = 5°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BST | High-side gate drive boost supply | Connects 100nF capacitor from BST to SW to generate ~5V gate drive voltage for internal 45mΩ HS MOSFET. |
| VIN | Main power input | Accepts 3.8–40V; requires bulk capacitance (e.g., 2×10µF + 3×22µF) near pin to suppress switching noise and support load dump. |
| EN | Enable/UVLO control input | Digital enable with 1.18V rising threshold; also programs VIN UVLO using external resistor divider (R3/R4). |
| SS | Soft-start timing node | Internal 4µA current source charges external capacitor (e.g., 10nF) to ramp COMP voltage linearly during startup. |
| FB | Output voltage feedback sense | Compares resistive divider output against 0.8V reference; sets VOUT = 0.8V × (1 + R1/R2). |
| COMP | Error amplifier compensation node | Connects RC network (e.g., 15.8kΩ + 2.7nF) to stabilize loop response for 4.7µH inductor and target phase margin. |
| GND | Power ground reference | Common return for VIN, SW, FB, COMP, SS, EN; must connect to exposed pad and low-impedance ground plane. |
| SW | Switching node output | Drives external LC filter (e.g., 4.7µH + 100nF + 22µF); high di/dt path requiring tight layout and Kelvin grounding. |
| EXPOSED PAD | Thermal and electrical ground | Electrically connected to internal GND; mandatory solder connection to PCB ground plane for thermal performance and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for -40°C to +125°C ambient operation with HBM ±2kV / CDM ±1kV ESD robustness - meets automotive reliability requirements. |
| Proprietary ringing-free gate driver | Eliminates SW node oscillation without slowing edge rates, reducing high-frequency radiated EMI by >10dB compared to standard buck controllers. |
| Frequency Spread Spectrum (FSS) | ±6% switching frequency jitter spreads spectral energy, lowering peak emissions to pass CISPR 25 Class 5 conducted/radiated limits. |
| Low-dropout (LDO) mode | Maintains regulation when VIN drops near VOUT (e.g., 5.5V→5V), enabling graceful operation during battery brownouts. |
| Precision enable threshold | 1.18V EN rising threshold with 1.5µA internal pull-up allows direct VIN connection or resistor-divider UVLO programming - simplifies rail sequencing. |
Applications
| Engine Control Unit (ECU) Power Supply | ADAS Camera Module DC-DC |
|---|---|
|
Use Scenario: Powers microcontroller, CAN transceiver, and sensor interface in gasoline/diesel engine control units exposed to 40V load dump and -40°C cold crank. IC Role / Device Role / Timing Role: Primary 5V/3.3V step-down regulator with programmable soft-start to coordinate with MCU reset timing and avoid bus contention during cold start. Use Value: Integrated 45mΩ/20mΩ MOSFETs and SO-8EP thermal design sustain 5A output at +125°C ambient without derating; FSS ensures compliance with OEM EMI specifications. |
Use Scenario: Supplies image sensor, ISP, and MIPI PHY in forward-facing ADAS cameras mounted behind windshield (high-temp environment). IC Role / Device Role / Timing Role: High-efficiency 3.3V buck converter operating in PFM mode during vehicle sleep to minimize standby current draw. Use Value: 25μA quiescent current and 85% efficiency at 5mA enable >10-year battery-backed operation; LDO mode maintains output during 6V battery sag. |
| Automotive Infotainment Head Unit | Instrument Cluster Display Power |
|
Use Scenario: Generates 1.1V core voltage for application processor and 1.8V for DDR memory in centralized infotainment systems with multiple power rails. IC Role / Device Role / Timing Role: Secondary buck stage following pre-regulator; soft-start time programmed to sequence after main 12V rail to prevent inrush overload. Use Value: Peak current mode control provides fast transient response to processor load steps; COMP pin allows custom loop tuning for stable DDR memory rail. |
Use Scenario: Powers TFT-LCD backlight driver IC and microcontroller in digital instrument clusters requiring flicker-free display during ignition cycles. IC Role / Device Role / Timing Role: Dedicated 5V supply with precision 0.8V reference and ±1% tolerance ensuring consistent LED current regulation across temperature. Use Value: Output OVP (10% trip) and hiccup-mode OCP protect against shorted backlight circuits; EN pin enables synchronized power-up with cluster MCU. |
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 | 42V input, 2A output, 2.2MHz switching, no FSS, QFN-10 package | Limited to lower current; higher fSW reduces inductor size but increases EMI risk without FSS or ringing suppression | Select when board space is constrained and EMI filtering can be added externally; not suitable for 5A automotive loads. |
| TPS54560QDGQRQ1 | 60V input, 5A output, 100kHz–2.5MHz adjustable fSW, no integrated FSS, SOIC-8 package | Wider VIN range but larger θJA (65°C/W); requires external gate drivers and compensation components | Choose for ultra-high input voltage resilience (e.g., commercial truck 24V+ systems); adds BOM cost and layout complexity. |
Compared with MPQ4420AGL-A-Z and TPS54560QDGQRQ1, the AP64501QSP-13 uniquely combines AEC-Q100 Grade 1 qualification, integrated EMI reduction (ringing-free driver + FSS), SO-8EP thermal performance, and 5A capability in a single monolithic package - eliminating external drivers, reducing component count, and simplifying CISPR 25 compliance.
Availability
AP64501QSP-13 is available at Aetrix Electronics and suitable for automotive power systems, ADAS camera modules, and instrument cluster displays requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AP64501QSP-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 solutions for automotive, industrial, and consumer markets, with IATF 16949-certified manufacturing facilities.
The AP64501QSP-13 belongs to Diodes' automotive-qualified power management portfolio, designed specifically for high-reliability DC-DC conversion in engine bays, ADAS sensors, and infotainment systems where EMI, thermal, and AEC-Q100 compliance are mandatory.
FAQ
What is the maximum junction temperature and thermal shutdown threshold?
The AP64501QSP-13 has a maximum junction temperature rating of +160°C, with thermal shutdown activating at TJ = +160°C ±0°C (no hysteresis specified). Thermal shutdown recovery occurs after junction temperature falls by +25°C hysteresis, returning operation once TJ ≤ +135°C. This protects against sustained overload or inadequate heatsinking in enclosed automotive enclosures.
How is undervoltage lockout (UVLO) configured using the EN pin?
UVLO is configured by connecting a resistor divider from VIN to GND with tap to EN. The internal 1.5µA pull-up and 4µA hysteresis current source allow setting rising (VON) and falling (VOFF) thresholds independently. For example, using R3 = 180kΩ and R4 = 100kΩ yields VON ≈ 3.7V and VOFF ≈ 3.3V per datasheet equations, enabling rail sequencing during battery wake-up.
Does the AP64501QSP-13 support forced PWM mode at all load conditions?
No - the AP64501QSP-13 operates in forced PWM only above ~500mA load. Below that, it transitions to PFM mode to maintain high efficiency at light loads. At 5mA output, it achieves up to 85% efficiency with 25μA quiescent current. Zero-cross detection disables LS MOSFET conduction when inductor current falls to 60mA, preventing reverse current flow.
What is the recommended minimum output capacitance for stability?
The datasheet specifies a minimum 3×22µF ceramic + bulk aluminum electrolytic (not shown in typical circuit) for 5V/5A operation. Total effective capacitance must provide ≥20µF at DC bias to ensure phase margin >45° with the 4.7µH inductor and COMP network. X7R dielectric and low-ESR construction are required to damp high-frequency ringing and support 5A transient response.
AP64501QSP-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:
- 5A
- Frequency - Switching:
- 570kHz
- 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
AP64501QSP-13 FAQ
1.How can I place an order for AP64501QSP-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP64501QSP-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 AP64501QSP-13 reliable?
The price and inventory of AP64501QSP-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP64501QSP-13 is usually 5 days.
3.What payment methods are accepted for AP64501QSP-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP64501QSP-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP64501QSP-13?
AP64501QSP-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP64501QSP-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 AP64501QSP-13?
For technical support, including AP64501QSP-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP64501QSP-13 requirements.
6.How does Aetrix verify that AP64501QSP-13 is sourced from the original manufacturer or authorized distributors?
All AP64501QSP-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 AP64501QSP-13 meets industry standards.
7.What is the process for return or replacement of AP64501QSP-13?
All AP64501QSP-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP64501QSP-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 AP64501QSP-13 part is unused and in its original packaging.
Return procedure for AP64501QSP-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP64501QSP-13 Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
