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Diodes Incorporated AP61302QZ6-7
- Part No.:
- AP61302QZ6-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SOT-563, SOT-666
- Datasheet:
-
AP61302QZ6-7.pdf
- Description:
- IC REG BUCK ADJ 3A SOT563
- Quantity:
- Payment:
- Shipping:
Inventory:3,321
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Product details
Overview
AP61302QZ6-7 from Diodes Incorporated is an AEC-Q100 Grade 1 automotive synchronous buck converter delivering 3A continuous output current with 2.4V–5.5V input range, 0.6V–3.6V programmable output, and integrated 70mΩ high-side / 50mΩ low-side MOSFETs. It features a 2.2MHz switching frequency, 19μA quiescent current in PFM mode, and a dedicated open-drain Power-Good (PG) indicator for system monitoring in ADAS and instrument cluster power rails.
For engineers reviewing the AP61302QZ6-7 datasheet, AP61302QZ6-7 pinout, AP61302QZ6-7 application, or AP61302QZ6-7 equivalent, key selection criteria include its automotive-grade thermal shutdown (+160°C), ±2% reference voltage accuracy, programmable PFM/PWM operation via EN pin biasing, and PG fault reporting with 40μs rise delay and 5MΩ internal pull-up.
Technical Context
The AP61302QZ6-7 employs Constant On-Time (COT) control architecture to achieve fast transient response and stable loop behavior without external compensation. Its on-time is dynamically calculated as tON = VOUT/(VIN × fSW), enabling pseudo-fixed-frequency operation across input voltage variations.
It supports dual operating modes: PFM for ultra-low IQ (19μA) at light loads (e.g., 5mA), achieving up to 84% efficiency; and forced PWM (via EN pin biasing < VIN – 200mV) for consistent 2.2MHz switching regardless of load. The PG pin provides real-time regulation status with 90% undervoltage and 110% overvoltage thresholds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.4V to 5.5V DC - supports wide automotive battery rail variation including cold-crank (≥2.4V) and load-dump transients (≤5.5V). |
| IOUT Max | 3A continuous - enables single-chip supply for microcontrollers, sensors, or display drivers in infotainment systems. |
| VFB Accuracy | 0.6V ±2% - ensures output voltage regulation within ±72mV at 3.6V setting, critical for SoC core rail stability. |
| fSW | 2.2MHz typical (VIN=5V, VOUT=1.8V) - allows use of compact 1μH inductors and reduces EMI fundamental frequency above AM band. |
| IQ (PFM) | 19μA typical - extends battery runtime in always-on vehicle modules such as telematics wake-up circuits. |
| PG Thresholds | UV: 90% / OV: 110% of VOUT - provides robust power-rail monitoring with 5% hysteresis window for noise immunity. |
| Thermal Shutdown | +160°C junction temperature - protects against sustained overload in sealed automotive enclosures. |
Pinout & Package
SOT563 package: 1.6mm × 1.6mm × 0.55mm body, 6-pin ultra-small outline transistor with exposed thermal pad (θJA = 141°C/W on 2-layer FR-4).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB | Feedback sensing input | Connects to resistor divider (e.g., 200kΩ/100kΩ) to set VOUT; senses 0.6V reference for regulation. |
| GND | Power ground reference | Primary return path for VIN, SW, and PG; must be low-impedance connection to minimize noise coupling. |
| VIN | Main power input | Supplies IC bias and high/low-side MOSFETs; requires ≥22µF ceramic bypass capacitor near pin. |
| SW | Switch node output | Drives external LC filter (1μH + 22µF); carries high di/dt; layout critical for EMI and efficiency. |
| EN | Enable and mode control | Digital enable (0.83V/0.91V thresholds); sets PFM (VIN–200mV) or forced PWM ( |
| PG | Open-drain power-good | Active-low indicator; pulled low during soft-start or ±10% VOUT deviation; internal 5MΩ pull-up to VIN. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for -40°C to +125°C ambient operation - meets automotive electronics reliability requirements for under-hood and cabin applications. |
| Integrated power MOSFETs | 70mΩ HS / 50mΩ LS RDS(ON) - eliminates external FETs and gate drivers, reducing BOM count and PCB area in space-constrained modules. |
| Programmable PFM/PWM mode | EN pin biasing selects light-load efficiency (PFM) or fixed-frequency noise control (PWM) - enables optimization per subsystem requirement. |
| Low-dropout (LDO) mode | Operates in 100% duty cycle when VOUT ≈ VIN - maintains regulation during brown-out conditions down to 2.4V input. |
| Comprehensive protection suite | Includes UVLO (2.2V fall), VIN OVP (6.3V), peak/valley current limits, and thermal shutdown - prevents damage during fault events. |
Applications
| Automotive Instrument Clusters | ADAS Camera Modules |
|---|---|
|
Use Scenario: Powering TFT-LCD display drivers and microcontroller cores in digital dashboards with strict EMC and thermal constraints. IC Role / Device Role / Timing Role: Primary 3.3V/1.8V point-of-load regulator with PG signal feeding MCU watchdog and display enable logic. Use Value: 2.2MHz switching avoids interference with CAN FD and Ethernet AVB frequencies; PG confirms rail readiness before display initialization. |
Use Scenario: Supplying image sensor and ISP in rear-view or surround-view cameras requiring low-noise, fast-transient response. IC Role / Device Role / Timing Role: High-efficiency buck stage delivering stable 1.2V core and 2.8V I/O rails; PG synchronizes sensor frame capture timing. Use Value: COT control delivers <50mV load transient undershoot at 2A step; 19μA IQ extends sleep-mode battery life in parked surveillance mode. |
| Automotive Telematics Control Units | In-Vehicle Infotainment (IVI) Processors |
|
Use Scenario: Providing always-on 1.8V rail for LTE/GNSS baseband processors in connected car gateways with intermittent cellular activity. IC Role / Device Role / Timing Role: Standby power regulator with EN-controlled wake/sleep cycling; PG signals valid VOUT to application processor interrupt line. Use Value: 0.1μA shutdown current minimizes battery drain during vehicle off-state; PG enables deterministic boot sequencing after ignition. |
Use Scenario: Generating 1.1V core voltage for ARM-based application processors in head units with dynamic DVFS scaling. IC Role / Device Role / Timing Role: Main SoC core supply with programmable PWM mode ensuring constant 2.2MHz ripple for EMI filtering predictability. Use Value: Forced PWM eliminates variable-frequency beat notes in audio subsystems; 3A rating supports burst-mode CPU loads up to 2.5GHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4420AGQ-A | 2.5V–36V input, 2A output, 500kHz–3MHz adjustable fSW, no PG pin | Lacks automotive qualification and PG indicator; suited for non-safety-critical industrial supplies | Select only if wider VIN range is required and PG monitoring is unnecessary. |
| TPS62903RQYR | 3V–18V input, 3A output, 1.8V–5.5V VOUT, 1.8MHz fSW, 15μA IQ, PG pin | AEC-Q100 qualified but Grade 2 (–40°C to +105°C); lower max ambient than AP61302QZ6-7 | Prefer for cost-sensitive Grade 2 applications where 125°C ambient is not required. |
Compared with MPQ4420AGQ-A and TPS62903RQYR, the AP61302QZ6-7 uniquely combines AEC-Q100 Grade 1 operation, integrated PG with precise ±10% thresholds, and sub-20μA PFM IQ - making it optimal for safety-critical, thermally demanding automotive domains where rail integrity verification is mandatory.
Availability
AP61302QZ6-7 is available at Aetrix Electronics and suitable for automotive instrument clusters, ADAS camera modules, and telematics control units requiring stable component supply with full AEC-Q100 traceability and PPAP support.
Supply support for AP61302QZ6-7 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 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 AP61300Q/AP61302Q product line is designed specifically for automotive power conversion applications requiring AEC-Q100 qualification, low quiescent current, and integrated protection - targeting infotainment, ADAS, and body electronics subsystems.
FAQ
What is the difference between AP61300Q and AP61302Q?
The AP61302QZ6-7 includes a dedicated open-drain Power-Good (PG) output pin for rail monitoring, while the AP61300Q uses pin 6 as OUT (output power rail). Both share identical electrical specs, package, and control architecture. The PG function enables system-level fault detection and sequencing in safety-critical automotive modules.
How is PFM vs. PWM mode selected on the AP61302QZ6-7?
PFM mode activates automatically at light loads when EN is biased ≥ VIN – 200mV (e.g., tied directly to VIN). Forced PWM mode engages when EN is biased < VIN – 200mV using a resistive divider - ensuring fixed 2.2MHz switching regardless of load current for predictable EMI filtering.
What is the minimum recommended input capacitance for stable operation?
Diodes recommends ≥22µF X5R/X7R ceramic capacitor placed as close as possible to the VIN and GND pins. This value suppresses high-frequency switching noise and supports peak current demands during load transients without violating the 6.5V absolute maximum VIN rating.
Does the AP61302QZ6-7 require external compensation components?
No. The AP61302QZ6-7 uses Constant On-Time (COT) control architecture, eliminating the need for external compensation networks. Loop stability is inherent to the topology, simplifying design and reducing bill-of-materials for automotive-grade DC-DC converters.
AP61302QZ6-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-563, SOT-666
- 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):
- 2.4V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 3A
- Frequency - Switching:
- 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-563
AP61302QZ6-7 FAQ
1.How can I place an order for AP61302QZ6-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP61302QZ6-7 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 AP61302QZ6-7 reliable?
The price and inventory of AP61302QZ6-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP61302QZ6-7 is usually 5 days.
3.What payment methods are accepted for AP61302QZ6-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP61302QZ6-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP61302QZ6-7?
AP61302QZ6-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP61302QZ6-7 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 AP61302QZ6-7?
For technical support, including AP61302QZ6-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP61302QZ6-7 requirements.
6.How does Aetrix verify that AP61302QZ6-7 is sourced from the original manufacturer or authorized distributors?
All AP61302QZ6-7 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 AP61302QZ6-7 meets industry standards.
7.What is the process for return or replacement of AP61302QZ6-7?
All AP61302QZ6-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP61302QZ6-7, 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 AP61302QZ6-7 part is unused and in its original packaging.
Return procedure for AP61302QZ6-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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