My Inquiry
My Account
Diodes Incorporated AP63300QWU-7
- Part No.:
- AP63300QWU-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
AP63300QWU-7.pdf
- Description:
- IC REG BUCK ADJ 3A TSOT26
- Quantity:
- Payment:
- Shipping:
Inventory:3,695
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP63300QWU-7 from Diodes Incorporated is an AEC-Q100 Grade 1 automotive synchronous buck converter delivering 3A continuous output from a 3.8V–32V input, featuring 75mΩ/40mΩ integrated high-side/low-side MOSFETs, 22μA quiescent current in PFM mode, and 500kHz fixed-frequency operation with Frequency Spread Spectrum (±6% jitter) for EMI reduction. It targets power rails in instrument clusters and telematics modules requiring low-noise, high-reliability DC-DC conversion.
For engineers reviewing the AP63300QWU-7 datasheet, AP63300QWU-7 pinout, AP63300QWU-7 application, or AP63300QWU-7 equivalent, key selection criteria include its automotive-grade thermal shutdown (+160°C), precision enable threshold (1.18V), 0.8V ±1% feedback reference, integrated loop compensation, and TSOT26 package compatibility with space-constrained PCB layouts.
Technical Context
The AP63300QWU-7 employs peak current mode control with internal slope compensation to ensure stability at duty cycles >50%, and integrates a 4ms soft-start circuit to limit inrush current. Its proprietary multi-level gate driver suppresses switching node ringing without degrading rise/fall times, directly reducing high-frequency radiated EMI.
It operates in Pulse Frequency Modulation (PFM) under light load (≤930mA peak inductor current), achieving up to 88% efficiency at 5mA output, while maintaining forced PWM at full load. The device supports low-dropout (LDO) mode and includes cycle-by-cycle current limiting, output overvoltage protection (OVP), and thermal shutdown with +25°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 3.8V to 32V DC - supports wide automotive battery transients including cold-crank (4.5V) and load-dump (32V). |
| Output Current | 3A continuous - sustains full-rated load across -40°C to +125°C ambient without derating. |
| Quiescent Current | 22μA typical (PFM mode) - enables ultra-low standby power for always-on vehicle systems. |
| Switching Frequency | 500kHz ±10% - balances efficiency, size, and EMI; enhanced by ±6% FSS in AP63300Q variant. |
| Feedback Reference | 0.800V ±1% - enables precise output regulation down to 0.8V with external resistor divider. |
| MOSFET RDS(ON) | 75mΩ (HS) / 40mΩ (LS) - minimizes conduction loss and improves full-load efficiency (>90% typical at 12V→5V). |
| Enable Threshold | 1.18V (rising) - allows direct VIN connection or precise UVLO adjustment via external resistor network. |
| Thermal Shutdown | +160°C junction with +25°C hysteresis - ensures safe recovery after overtemperature events in sealed enclosures. |
Pinout & Package
AP63300QWU-7 is housed in a thermally enhanced TSOT26 package (2.9mm × 1.6mm × 0.6mm), optimized for automotive PCB layouts with minimal footprint and efficient heat dissipation via exposed pad (GND-connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB (Pin 1) | Feedback sensing input | Monitors output voltage via resistive divider; regulates VOUT to 0.8V reference with ±1% accuracy. |
| EN (Pin 2) | Enable control input | Digital on/off control with 1.18V rising threshold; internal 1.5μA pull-up enables auto-start when floating. |
| VIN (Pin 3) | Main power input | Accepts 3.8V–32V supply; powers internal circuitry and MOSFET drivers; requires local 10μF ceramic bypass. |
| GND (Pin 4) | Power ground reference | Common return path for VIN, SW, BST, and internal regulators; must be connected to low-impedance PCB ground plane. |
| SW (Pin 5) | Switching node output | Drives external inductor; carries high di/dt current; requires tight layout to minimize EMI and ringing. |
| BST (Pin 6) | Bootstrap capacitor connection | Supplies gate drive for high-side MOSFET; requires 100nF ceramic capacitor between BST and SW. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for -40°C to +125°C ambient operation in automotive power systems per IATF 16949 manufacturing. |
| Frequency Spread Spectrum (FSS) | ±6% switching frequency jitter reduces peak EMI amplitude by spreading energy across a 60kHz band. |
| Ringing-free gate driver | Proprietary multi-level drive suppresses SW node oscillation without slowing edge rates, lowering radiated emissions. |
| Integrated loop compensation | Eliminates need for external compensation components, reducing BOM count and design validation effort. |
| Low-IQ PFM operation | 22μA no-load IQ enables >88% efficiency at 5mA load-critical for always-on infotainment and ADAS subsystems. |
| Robust protection suite | Includes UVLO, OVP, cycle-by-cycle current limit, and thermal shutdown with hysteresis for field reliability. |
Applications
| Automotive Instrument Cluster | Automotive Telematics Unit |
|---|---|
|
Use Scenario: Powering digital LCD display, microcontroller, and CAN interface in dashboard cluster with 12V battery input. IC Role / Device Role / Timing Role: Primary 5V/3.3V buck regulator supplying core logic and display backlight drivers. Use Value: FSS and ringing-free switching meet CISPR-25 Class 5 radiated emissions limits without added shielding or filters. |
Use Scenario: Generating stable 3.3V rail for LTE modem, GNSS receiver, and MCU in connected car telematics module. IC Role / Device Role / Timing Role: High-efficiency, low-noise DC-DC converter operating across wide input range during engine start-stop cycles. Use Value: 22μA IQ and PFM mode extend battery backup runtime during vehicle sleep mode (<100μA system total). |
| Automotive Body Control Module | Advanced Driver Assistance Systems |
|
Use Scenario: Supplying 5V to door module microcontrollers, LIN transceivers, and LED drivers in harsh under-hood environment. IC Role / Device Role / Timing Role: Main power stage converting battery voltage to regulated 5V with thermal robustness up to +125°C ambient. Use Value: +160°C thermal shutdown and AEC-Q100 qualification ensure reliable operation during prolonged high-temperature exposure. |
Use Scenario: Providing clean 3.3V supply to radar sensor SoC and camera image signal processor in front-end ADAS ECU. IC Role / Device Role / Timing Role: Low-ripple, low-EMI power source meeting strict noise immunity requirements for RF-sensitive analog front-ends. Use Value: Integrated loop compensation and 0.8V ±1% reference enable <±10mV output regulation critical for ADC reference stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4433-AEC1 | 4A rated, 3.8V–36V input, 15μA IQ, no FSS, QFN-13 package | Larger footprint; higher current headroom but less EMI optimization for compact modules | Select when >3A peak load or lower IQ is mandatory; avoid if CISPR-25 Class 5 compliance is required without filtering. |
| TPS62130A-Q1 | 3A rated, 3V–17V input, 17μA IQ, 2.2MHz switching, WSON-10 package | Narrower VIN range excludes 24V systems; higher fSW increases inductor size constraints | Prefer for 12V-only systems needing smaller magnetics; not suitable for 24V commercial truck or industrial vehicle platforms. |
Compared with MPQ4433-AEC1 and TPS62130A-Q1, AP63300QWU-7 uniquely combines 32V input tolerance, FSS-enabled EMI reduction, and TSOT26 compactness-making it optimal for space-limited, 12V/24V dual-voltage automotive modules where radiated emissions and thermal margin are critical.
Availability
AP63300QWU-7 is available at Aetrix Electronics and suitable for automotive instrument clusters, telematics units, and body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AP63300QWU-7 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 ISO/TS 16949-certified facilities.
The AP63300Q series belongs to Diodes' automotive-qualified power management portfolio, designed specifically for high-reliability DC-DC conversion in safety-critical vehicle subsystems operating from 3.8V to 32V inputs.
FAQ
What is the difference between AP63300QWU-7 and AP63301QWU-7?
AP63300QWU-7 operates in Pulse Frequency Modulation (PFM) at light loads to achieve 22μA quiescent current and up to 88% efficiency at 5mA, while AP63301QWU-7 uses forced PWM across all loads for tighter output voltage regulation and lower ripple, with 280μA typical IQ. Both share identical pinout, package, and protection features.
Can AP63300QWU-7 be used in non-automotive applications?
Yes-its 3.8V–32V input range, 3A output, and robust protection make it suitable for industrial power supplies and telecom equipment. However, AEC-Q100 qualification, PPAP documentation, and IATF 16949 manufacturing are only guaranteed for automotive use cases; non-automotive users should verify qualification scope with Diodes Incorporated.
How does the Frequency Spread Spectrum (FSS) function in AP63300QWU-7?
FSS modulates the 500kHz switching frequency by ±6% in real time, spreading radiated energy across a ~60kHz bandwidth instead of concentrating at a single harmonic. This reduces peak EMI amplitude by up to 10dB, easing compliance with CISPR-25 Class 5 without additional EMI filters or shielding.
What is the recommended PCB layout practice for minimizing EMI with AP63300QWU-7?
Minimize SW node copper area and keep BST-to-SW trace short and direct with a 100nF ceramic capacitor placed adjacent to pins 5 and 6. Use a solid GND plane beneath the IC, connect the exposed pad directly to GND, and place input capacitors (10μF + 2×22μF) within 3mm of VIN and GND pins to suppress high-frequency noise.
AP63300QWU-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- 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):
- 32V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 32V
- Current - Output:
- 3A
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-26
AP63300QWU-7 FAQ
1.How can I place an order for AP63300QWU-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP63300QWU-7 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 AP63300QWU-7 reliable?
The price and inventory of AP63300QWU-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP63300QWU-7 is usually 5 days.
3.What payment methods are accepted for AP63300QWU-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP63300QWU-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP63300QWU-7?
AP63300QWU-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP63300QWU-7 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 AP63300QWU-7?
For technical support, including AP63300QWU-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP63300QWU-7 requirements.
6.How does Aetrix verify that AP63300QWU-7 is sourced from the original manufacturer or authorized distributors?
All AP63300QWU-7 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 AP63300QWU-7 meets industry standards.
7.What is the process for return or replacement of AP63300QWU-7?
All AP63300QWU-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP63300QWU-7, 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 AP63300QWU-7 part is unused and in its original packaging.
Return procedure for AP63300QWU-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP63300QWU-7 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…
