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Diodes Incorporated AP62500SJ-7
- Part No.:
- AP62500SJ-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 12-VFQFN
- Datasheet:
-
AP62500SJ-7.pdf
- Description:
- IC REG BUCK ADJ 5A 12QFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,546
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Product details
Overview
AP62500SJ-7 from Diodes Incorporated is a 5A synchronous buck DC-DC converter with integrated 47mΩ high-side and 18mΩ low-side MOSFETs, operating from 4.5V to 18V input and delivering adjustable 0.6V–7V output. It uses Constant On-Time (COT) control for fast transient response and low output ripple, features programmable soft-start and EMI-optimized gate drive, and targets point-of-load regulation in FPGA, TV, and home appliance power supplies.
For engineers reviewing the AP62500SJ-7 datasheet, AP62500SJ-7 pinout, AP62500SJ-7 application, or AP62500SJ-7 equivalent, key selection criteria include its 5A continuous current capability, selectable 400/800/1200kHz switching frequency, PFM/USM/PWM mode flexibility, 0.6V ±1% reference accuracy, and V-QFN2030-12 (Type A) thermal performance (θJA = 40°C/W).
Technical Context
The AP62500SJ-7 implements Constant On-Time (COT) control with input-voltage- and output-voltage-dependent on-time calculation (tON = VOUT/(VIN × fSW)), enabling pseudo-fixed-frequency operation across wide VIN and VOUT ranges. Its proprietary gate driver suppresses switching-node ringing while preserving <70ns minimum on-time and <255ns minimum off-time.
It integrates full protection: cycle-by-cycle valley current limit (6.0–8.0A), thermal shutdown at 160°C with 30°C hysteresis, precision enable threshold (1.18V typical), and power-good monitoring with 5MΩ internal pull-up and ±5% UV/OV thresholds referenced to regulated output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 4.5V to 18V DC - supports 5V/12V distributed bus inputs without external pre-regulation. |
| Output Current | 5A continuous - sustains full load under 85°C ambient with recommended PCB layout and thermal pad. |
| VOUT Range | 0.6V to 7V - set via external resistor divider; 0.6V ±1% reference enables ±1% output accuracy at 5V. |
| fSW Options | 400/800/1200kHz - selected by FSEL pin; higher frequencies allow smaller inductors (e.g., 2.2μH at 800kHz). |
| IQ | 195μA typical - enables low-power standby in always-on consumer systems without compromising startup time. |
| Thermal Resistance | θJA = 40°C/W - achieved with V-QFN2030-12 Type A package and 4-layer FR-4 PCB with thermal pad. |
| Protection | UVLO (3.95V fall), valley current limit (7A typ), thermal shutdown (160°C), PG fault detection (±5% window). |
Pinout & Package
V-QFN2030-12 (Type A) package: 3.0mm × 2.0mm body, 0.5mm pitch, exposed thermal pad (PGND-connected), RoHS-compliant, halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND (1) | Power Ground | Main return path for high-current switch node; must connect to large copper plane for thermal and EMI performance. |
| VIN (2) | Input Power Supply | 4.5–18V input source; requires local bulk capacitance (≥22μF) and high-frequency ceramic (≥100nF) bypassing. |
| EN (3) | Enable Control | Digital input with 1.18V precision UVLO threshold; open-drain compatible; enables system-level sequencing. |
| MODE (4) | Operation Mode Select | GND = PFM (light-load efficiency), floating = USM (ultrasonic noise avoidance), VCC = PWM (fixed-frequency stability). |
| FSEL (5) | Frequency Select | GND = 400kHz, floating = 800kHz, VCC = 1.2MHz - sets switching frequency without external clock. |
| PG (6) | Power-Good Indicator | Open-drain output with 5MΩ internal pull-up; asserts low during soft-start or ±5% output deviation. |
| BST (7) | Bootstrap Supply | Drives high-side MOSFET gate; requires 100nF ceramic capacitor between BST and SW for charge pump operation. |
| SW (8) | Switch Node | Connection to external inductor; high dv/dt node requiring minimized trace length and ground shielding. |
| VCC (9) | Internal Bias Supply | 5V regulated output for control logic; requires 1μF ceramic capacitor to PGND; inactive when EN = low. |
| SS/TR (10) | Soft-Start/Tracking | Controls ramp rate via external capacitor; enables voltage tracking in multi-rail systems or sequencing. |
| GND (11) | Analog Ground | Kelvin-sense reference for feedback and control circuits; must be star-connected to PGND at single point. |
| FB (12) | Feedback Input | Resistive divider connection point; senses output voltage with 0.6V reference; high-impedance input (5μA bias). |
Key Features
| Feature | Design Value |
|---|---|
| EMI-optimized gate driver | Reduces high-frequency radiated noise by suppressing switching-node ringing without extending MOSFET turn-on/off times. |
| Constant On-Time (COT) control | Delivers <10μs load transient response and eliminates loop compensation components for simplified design. |
| Programmable soft-start | Adjustable ramp time via SS/TR capacitor prevents inrush current; default 1ms with floating pin. |
| Selectable operating modes | PFM maximizes light-load efficiency; USM avoids audible noise; PWM ensures fixed-frequency EMI filtering. |
| Integrated power MOSFETs | 47mΩ HS + 18mΩ LS devices eliminate external FETs and drivers, reducing BOM count and layout area. |
Applications
| 5V/12V Distributed Power Bus | FPGA/DSP Core Supply |
|---|---|
Use Scenario: Regulating 12V bus down to 5V for peripheral I/O rails in network switches and industrial controllers. IC Role / Device Role / Timing Role: Primary step-down regulator with fast transient response to handle bursty Ethernet packet processing loads. Use Value: 5A capability and COT control maintain <±2% output regulation during 100mA–5A load steps with <10μs recovery. |
Use Scenario: Providing clean, tightly regulated 1.2V core supply to Xilinx Artix-7 FPGA with dynamic current demand up to 4.5A. IC Role / Device Role / Timing Role: Point-of-load converter with programmable soft-start and tracking for safe power sequencing with auxiliary rails. Use Value: 0.6V ±1% reference and precision FB input enable ±1% output accuracy at 1.2V, critical for FPGA logic stability. |
| Television & Monitor Mainboard | Home Audio Amplifier Bias Supply |
Use Scenario: Generating 3.3V and 5V rails from 12V input for SoC, memory, and display interface ICs in smart TVs. IC Role / Device Role / Timing Role: High-efficiency main DC-DC stage with ultrasonic mode (USM) to eliminate audible coil whine during quiet scenes. Use Value: USM operation maintains >85% efficiency at 100mA load while keeping switching frequency above 20kHz. |
Use Scenario: Delivering stable 15V bias supply to Class-D audio amplifier ICs in soundbars and AV receivers. IC Role / Device Role / Timing Role: Secondary regulated rail with power-good signaling to enable amplifier mute during brownout conditions. Use Value: PG output with ±5% fault window provides reliable enable/disable coordination with audio DSP reset timing. |
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) | 4.5–36V input, 0.8A output, fixed 2MHz fSW, no MODE/FSEL pins, lower current rating. | Suitable only for sub-1A loads; lacks PFM/USM mode flexibility and programmable soft-start. | Select when input voltage exceeds 18V and output current ≤0.8A; not drop-in for AP62500SJ-7's 5A requirement. |
| TPS54560BQPWPRQ1 (TI) | 3.5–60V input, 5A output, external MOSFETs required, adjustable fSW (100kHz–2.5MHz), AEC-Q100 qualified. | Designed for automotive; requires external high-side/low-side FETs and more external components. | Choose for automotive-grade reliability and wider VIN range; accept added complexity and board space vs. AP62500SJ-7's integration. |
Compared with MP2451DT-LF-Z and TPS54560BQPWPRQ1, the AP62500SJ-7 delivers superior integration (no external FETs), optimized EMI performance for consumer audio/video, and flexible mode selection-making it ideal for cost-sensitive, space-constrained 5A point-of-load designs where 4.5–18V input suffices.
Availability
AP62500SJ-7 is available at Aetrix Electronics and suitable for FPGA power delivery, television mainboard supplies, and home audio bias generation requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for AP62500SJ-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 power management, signal integrity, and protection solutions for consumer, industrial, and computing markets.
The AP62500SJ-7 belongs to Diodes' high-efficiency synchronous buck converter product line, designed specifically for EMI-sensitive consumer electronics and compact point-of-load applications demanding integrated MOSFETs and fast transient response.
FAQ
What is the recommended input capacitor configuration for AP62500SJ-7?
Use a parallel combination of ≥22μF bulk aluminum polymer or tantalum capacitor and ≥100nF X7R ceramic capacitor placed as close as possible to the VIN and PGND pins. This minimizes high-frequency switching noise and ensures stable operation across 4.5–18V input range and 5A load transients.
How does the AP62500SJ-7 achieve EMI reduction without sacrificing efficiency?
It employs a proprietary gate driver that damps switching-node ringing through controlled slew-rate shaping while maintaining fast MOSFET turn-on (<70ns) and turn-off times. This reduces high-frequency radiated emissions without increasing conduction losses or compromising 92% peak efficiency at 5A/5V output.
Can AP62500SJ-7 operate with an output voltage below 0.6V?
No. The internal reference voltage is fixed at 0.6V ±1%, and the feedback comparator is designed for regulation only within the 0.6V–7V range. Attempting to set VOUT below 0.6V results in loss of regulation and uncontrolled output behavior per datasheet specifications.
What thermal derating applies to AP62500SJ-7 at 85°C ambient temperature?
With the recommended 4-layer PCB layout and thermal pad soldered to a 100mm² copper area, the device delivers full 5A output up to +85°C ambient. Above this, output current must be linearly reduced by ~50mA/°C based on θJA = 40°C/W and TJ(max) = 125°C junction limit.
AP62500SJ-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:
- 5A
- 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)
AP62500SJ-7 FAQ
1.How can I place an order for AP62500SJ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP62500SJ-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 AP62500SJ-7 reliable?
The price and inventory of AP62500SJ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP62500SJ-7 is usually 5 days.
3.What payment methods are accepted for AP62500SJ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP62500SJ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP62500SJ-7?
AP62500SJ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP62500SJ-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 AP62500SJ-7?
For technical support, including AP62500SJ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP62500SJ-7 requirements.
6.How does Aetrix verify that AP62500SJ-7 is sourced from the original manufacturer or authorized distributors?
All AP62500SJ-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 AP62500SJ-7 meets industry standards.
7.What is the process for return or replacement of AP62500SJ-7?
All AP62500SJ-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP62500SJ-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 AP62500SJ-7 part is unused and in its original packaging.
Return procedure for AP62500SJ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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