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Diodes Incorporated AP62600SJ-7
- Part No.:
- AP62600SJ-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 12-VFQFN
- Datasheet:
-
AP62600SJ-7.pdf
- Description:
- IC REG BUCK ADJ 6A 12QFN
- Quantity:
- Payment:
- Shipping:
Inventory:22,009
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Product details
Overview
AP62600SJ-7 from Diodes Incorporated is a 6A synchronous buck converter with 4.5V–18V input range, integrated 36mΩ high-side and 14mΩ low-side MOSFETs, 0.6V ±1% reference, and selectable 400/800/1200kHz switching frequency. It delivers high-efficiency DC-DC conversion for FPGA, DSP, and ASIC point-of-load supplies in consumer and industrial systems.
For engineers reviewing the AP62600SJ-7 datasheet, AP62600SJ-7 pinout, AP62600SJ-7 application, or AP62600SJ-7 equivalent, this page provides verified technical context, EMI-optimized gate drive behavior, COT control loop characteristics, soft-start programmability, and real-world efficiency curves across PFM/USM/PWM modes.
Technical Context
The AP62600SJ-7 uses Constant On-Time (COT) control with input-voltage–compensated on-time calculation (tON = VOUT/(VIN × fSW)), enabling fast transient response and stable operation without external compensation. Its proprietary gate driver suppresses switching-node ringing while preserving <70ns minimum on-time and 255ns minimum off-time.
Three selectable operating modes-PFM for light-load efficiency, Ultrasonic Mode (USM) to avoid audible noise, and forced PWM for constant-frequency regulation-are configured via MODE pin voltage thresholds (0.9V, 2.5V, 3.8V). Frequency selection (400/800/1200kHz) is set by FSEL pin state, directly impacting LC filter sizing and EMI profile.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 18V DC - supports 5V/12V distributed bus inputs and automotive transients up to 22V (400ms). |
| Output Current | 6A continuous - sustained at full load with thermal shutdown at +160°C and +30°C hysteresis. |
| Reference Voltage | 0.600V ±1% - enables precise output setting from 0.6V to 7V using external resistor divider. |
| Quiescent Current | 360μA typical - minimizes no-load power loss in always-on subsystems. |
| Switching Frequency | Selectable 400/800/1200kHz - determines inductor size, output ripple, and EMI spectral distribution. |
| Power-Good Accuracy | ±5% UV/OV detection window (PGUV_FALL = 85%, PGOV_RISE = 115%) - ensures reliable system sequencing. |
| Thermal Resistance | θJA = 40°C/W - validated on 4-layer FR-4 PCB with recommended V-QFN2030-12 (Type A) pad layout. |
Pinout & Package
V-QFN2030-12 (Type A) package: 3.0mm × 2.0mm body, 0.5mm pitch, exposed thermal pad, RoHS-compliant, halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND (1) | Power Ground | High-current return path for MOSFETs; requires direct connection to large copper plane for thermal and EMI performance. |
| VIN (2) | Main Power Input | Supplies IC logic and power stage; requires local 22µF+ ceramic bypass capacitor to suppress switching noise. |
| EN (3) | Enable Control | Digital enable with 1.18V precision UVLO threshold; open-drain startup allows automatic power-on sequencing. |
| MODE (4) | Operation Mode Select | GND = PFM, floating = USM, VCC = forced PWM - sets dynamic response and acoustic/noise behavior. |
| FSEL (5) | Frequency Select | GND = 400kHz, floating = 800kHz, VCC = 1.2MHz - trades off efficiency, component size, and EMI compliance. |
| PG (6) | Power-Good Indicator | Open-drain status flag pulled low during soft-start or output fault; requires external pull-up to VCC. |
| BST (7) | Bootstrap Supply | Drives high-side MOSFET gate; requires 100nF ceramic capacitor between BST and SW for charge replenishment. |
| SW (8) | Switch Node | Connects to inductor; high dv/dt node requiring minimized trace area and tight coupling to PGND for EMI reduction. |
| VCC (9) | Internal Bias Supply | Regulated 5.0V output powering control logic; requires 1µF ceramic decoupling near pin. |
| SS/TR (10) | Soft-Start/Tracking | Programs soft-start time via external capacitor; also supports output voltage tracking in multi-rail systems. |
| GND (11) | Analog Ground | Kelvin-sense reference for feedback and control circuitry; must be star-connected to PGND at single point. |
| FB (12) | Feedback Input | Monitors output via resistive divider; 0.6V reference enables accurate regulation across temperature (-40°C to +125°C). |
Key Features
| Feature | Design Value |
|---|---|
| EMI-optimized gate driver | Reduces high-frequency radiated emissions by suppressing switching-node ringing without extending MOSFET turn-on/off times. |
| Constant On-Time (COT) control | Enables <100μs load transient recovery and eliminates need for external compensation network. |
| Programmable soft-start | Adjustable start-up ramp time via SS/TR capacitor prevents inrush current and ensures controlled power sequencing. |
| Multi-mode operation | PFM (high light-load efficiency), USM (ultrasonic switching to eliminate audible noise), PWM (fixed-frequency stability). |
| Precision enable threshold | 1.18V ±20mV EN UVLO allows accurate input-bus undervoltage detection and custom brown-out protection. |
Applications
| ASIC Point-of-Load Supply | FPGA Core Voltage Regulation |
|---|---|
Use Scenario: Powers 0.8V–1.2V core rails of Xilinx Artix-7 or Intel Cyclone V FPGAs in industrial PLCs. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering 6A peak current with <2% output deviation under 5A/μs load steps. Use Value: COT control achieves <50μs recovery from 80% load step; 800kHz switching enables compact 1.5μH inductor and 3×22μF output capacitance. |
Use Scenario: Supplies configurable logic and I/O banks in broadcast video processing equipment with strict EMI limits. IC Role / Device Role / Timing Role: Dual-rail regulator (core + I/O) using SS/TR tracking and PG sequencing for safe power-up order. Use Value: Proprietary gate driver reduces 30–100MHz radiated emissions by >6dB; USM mode eliminates coil whine during standby. |
| Smart TV Mainboard Power | Network Router SoC Supply |
Use Scenario: Generates 3.3V/5V rails for SoC, memory, and display interface in 4K UHD television mainboards. IC Role / Device Role / Timing Role: High-efficiency buck converter operating in PFM mode at standby (<100mW) and PWM under active video decoding. Use Value: 360μA quiescent current extends standby battery life; 12V input compatibility simplifies design across regional AC/DC adapters. |
Use Scenario: Powers 1.1V CPU core and 1.8V DDR3 interface in enterprise-grade Wi-Fi 6 routers with thermal constraints. IC Role / Device Role / Timing Role: Compact 3.0mm × 2.0mm buck converter mounted adjacent to SoC die for minimal power delivery impedance. Use Value: V-QFN2030-12 package with exposed thermal pad achieves 40°C/W θJA; 6A rating supports burst-mode traffic peaks without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2451DT-LF-Z (Monolithic Power) | 4.5V–36V input, 0.8A output, fixed 2MHz fSW, no MODE/FSEL pins | Limited to low-power microcontroller rails; lacks multi-mode operation and EMI-optimized gate drive | Choose when input exceeds 18V or board space permits larger inductor; not suitable for 6A loads |
| TPS546B24RVFT (Texas Instruments) | 4.5V–18V input, 15A output, PMBus interface, 0.5% VREF accuracy, 12-pin WQFN | Supports digital telemetry and dynamic voltage scaling; higher cost and complexity for non-PMBus systems | Choose only if telemetry, margining, or >6A headroom is required; over-specified for basic 6A PoL |
Compared with MP2451DT-LF-Z and TPS546B24RVFT, the AP62600SJ-7 uniquely balances 6A capability, EMI-hardened switching, and three-mode flexibility in a 3.0mm × 2.0mm footprint-making it optimal for cost-sensitive, noise-critical, and thermally constrained consumer and industrial point-of-load designs.
Availability
AP62600SJ-7 is available at Aetrix Electronics and suitable for FPGA power delivery, smart TV mainboard supplies, and network router SoC regulation requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for AP62600SJ-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-efficiency power management, signal integrity, and protection solutions for industrial, consumer, and computing markets.
The AP62600SJ-7 belongs to Diodes' high-density synchronous buck converter product line, designed specifically for EMI-sensitive, space-constrained point-of-load applications demanding robust transient response and multi-mode efficiency optimization.
FAQ
What is the minimum recommended output capacitor for stable operation at 6A?
The datasheet specifies three 22µF X5R/X7R ceramic capacitors (total 66µF) with ≤5mΩ ESL for 5V output at 800kHz. This value ensures <20mV peak-to-peak ripple under full load and maintains phase margin above 45° across temperature and line variations. Lower capacitance may cause instability in PFM mode due to reduced damping.
How does the AP62600SJ-7 achieve EMI reduction without external filters?
It uses a proprietary gate driver that actively damps switching-node ringing by controlling slew rate during MOSFET transitions-reducing high-frequency harmonics above 30MHz-while maintaining <70ns minimum on-time. Combined with optimized internal power routing and V-QFN2030-12 thermal pad grounding, this cuts radiated emissions by ≥6dB versus standard buck controllers in identical layouts.
Can the AP62600SJ-7 operate with an input voltage below 4.5V?
No. The absolute minimum input is 4.5V per Recommended Operating Conditions, and the POR rising threshold is 4.0V–4.25V. Below 4.5V, the device enters undervoltage lockout and disables switching. Attempting operation at 4.2V will result in intermittent regulation, increased RDS(ON) losses, and potential thermal shutdown due to insufficient gate drive headroom for the high-side MOSFET.
What is the purpose of the Kelvin-connected GND pin (Pin 11)?
GND (Pin 11) provides a dedicated low-noise reference for the error amplifier and feedback comparator, isolated from high-current PGND paths. It must be connected to PGND at a single point near the FB resistor divider to prevent ground bounce from corrupting the 0.6V reference measurement-ensuring ±1% output accuracy across load and temperature.
AP62600SJ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 12-VFQFN
- 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):
- 4.5V
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 7V
- Current - Output:
- 6A
- Frequency - Switching:
- 400kHz, 800kHz, 1.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- V-QFN2030-12 (Type A)
AP62600SJ-7 FAQ
1.How can I place an order for AP62600SJ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP62600SJ-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 AP62600SJ-7 reliable?
The price and inventory of AP62600SJ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP62600SJ-7 is usually 5 days.
3.What payment methods are accepted for AP62600SJ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP62600SJ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP62600SJ-7?
AP62600SJ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP62600SJ-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 AP62600SJ-7?
For technical support, including AP62600SJ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP62600SJ-7 requirements.
6.How does Aetrix verify that AP62600SJ-7 is sourced from the original manufacturer or authorized distributors?
All AP62600SJ-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 AP62600SJ-7 meets industry standards.
7.What is the process for return or replacement of AP62600SJ-7?
All AP62600SJ-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP62600SJ-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 AP62600SJ-7 part is unused and in its original packaging.
Return procedure for AP62600SJ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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