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Diodes Incorporated AP2820FMTR-G1
- Part No.:
- AP2820FMTR-G1
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AP2820FMTR-G1.pdf
- Description:
- IC PWR SWITCH N-CHAN 1:1 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,777
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Product details
Overview
AP2820FMTR-G1 from BCD Semiconductor Manufacturing Limited is a high-side power distribution switch with integrated N-channel MOSFET, charge pump, over-current protection, thermal shutdown, and deglitched open-drain FLAG output. It delivers 2.5A continuous load capability, 60mΩ RDS(ON), and operates across 2.7V–5.5V input range-designed specifically for USB-compliant hot-plug power management in notebook and motherboard applications.
For engineers reviewing the AP2820FMTR-G1 datasheet, AP2820FMTR-G1 pinout, AP2820FMTR-G1 application, or AP2820FMTR-G1 equivalent, key selection criteria include active-high enable logic, no auto-discharge behavior, 500μs turn-on time, UVLO threshold at 2.5V (±0.2V), and fault-flag timing response of 5–15ms under over-current conditions.
Technical Context
The AP2820FMTR-G1 implements a charge-pump–driven high-side N-MOSFET switch with soft-start to limit inrush current and fold-back current limiting during output short-to-ground events. Its FLAG output provides asynchronous, deglitched fault signaling with open-drain topology requiring external pull-up.
It features under-voltage lockout (2.5V threshold with 0.2V hysteresis), thermal shutdown at 150°C (30°C hysteresis), and reverse-current blocking when disabled. The device supports SOIC-8 and MSOP-8 packages, with this variant (F) specifying active-high enable and no auto-discharge functionality for 2.5A continuous operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RDS(ON) | 60 mΩ typical at VIN=5V, IOUT=2.5A - ensures ≤125mV drop at full load, meeting USB voltage-drop compliance. |
| Continuous Output Current | 2.5 A - guaranteed rating for sustained load in USB bus/hub and battery-charger circuits. |
| Enable Logic | Active-high - EN pin asserts switch-on when driven ≥1.6V; compatible with standard GPIO interfaces. |
| FLAG Response Delay | 5–15 ms - fixed latency from over-current onset to FLAG assertion, enabling deterministic fault handling. |
| Supply Current (Active) | 80 μA typical - ultra-low quiescent draw minimizes system standby power impact. |
| UVLO Threshold | 2.5 V ±0.2 V - prevents erratic switching during brown-out or cold-start conditions. |
| Thermal Shutdown | 150 °C with 30 °C hysteresis - protects MOSFET and PCB during sustained overload or poor heatsinking. |
Pinout & Package
AP2820FMTR-G1 is housed in an SOIC-8 package (4.90 mm × 3.90 mm × 1.75 mm), RoHS-compliant and green (G1 suffix), rated for -40°C to +85°C ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Power ground reference for internal circuitry and MOSFET source return path. |
| 2, 3 | VIN | Input supply rail connection - dual pins reduce trace resistance and improve current sharing. |
| 4 | EN | Active-high enable control - logic-high (>1.6V) enables switch; logic-low disables with <1.0V threshold. |
| 5 | FLAG | Open-drain fault indicator - pulled low during OCP, OTP, or UVLO; requires external pull-up resistor. |
| 6, 7, 8 | VOUT | Switched output - triple pins minimize voltage drop and thermal rise under 2.5A load. |
Key Features
| Feature | Design Value |
|---|---|
| No reverse current on disable | Blocks backflow from VOUT to VIN when disabled - eliminates need for external blocking diode in battery-backed systems. |
| Soft-start | 500 μs controlled turn-on - limits inrush current to prevent input rail sag and connector arcing during hot-plug. |
| Fold-back short-circuit protection | Reduces output current to ~1.18 A during hard short - lowers power dissipation and enables safe recovery without latch-off. |
| UL & CB certified | UL File E339337 and Nemko CB IEC60950-1 - simplifies safety certification for end equipment targeting North America and EU markets. |
| Low shutdown current | ≤1.0 μA max - preserves battery life in always-on USB peripherals and portable devices. |
Applications
| USB Bus-Powered Hubs | Hot-Plug Notebook Peripherals |
|---|---|
|
Use Scenario: Powering downstream USB ports from a single upstream port with strict voltage-drop and inrush constraints. IC Role / Device Role / Timing Role: High-side switch controlling VBUS delivery with soft-start and fault flag reporting to host controller. Use Value: Maintains USB 2.0 voltage compliance (<5.25V min at load) while enabling plug-and-play detection via FLAG-driven interrupt. |
Use Scenario: Enabling/disabling auxiliary power rails (e.g., card readers, docking connectors) during live insertion/removal. IC Role / Device Role / Timing Role: Hot-swap controller providing controlled ramp-up, over-current isolation, and immediate fault signaling. Use Value: Prevents system reset or brown-out during peripheral insertion by limiting peak inrush to <100mA and isolating faults within 15ms. |
| Battery-Charger Load Switching | Desktop/Motherboard USB Power Management |
|
Use Scenario: Isolating charging circuitry from main system rail during charging termination or fault conditions. IC Role / Device Role / Timing Role: Load switch enforcing safe disconnect with reverse-current blocking and thermal margin. Use Value: Eliminates leakage path when charger IC is off, extending battery shelf life; thermal shutdown prevents MOSFET failure during overtemperature events. |
Use Scenario: Distributing clean, protected 5V power to multiple USB headers on ATX motherboards or embedded controllers. IC Role / Device Role / Timing Role: Independent per-port power gate with individual FLAG feedback for BIOS/firmware monitoring. Use Value: Enables OS-level port disable and per-port fault logging without requiring dedicated PMIC resources. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side power switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2051BDR | 2.0A rated, 70mΩ RDS(ON), active-high enable, no auto-discharge - lacks FLAG output and fold-back protection. | Requires external fault detection circuitry; suitable only where basic ON/OFF control suffices. | Select when FLAG signaling is unnecessary and cost sensitivity outweighs fault diagnostics. |
| AP2820EMTR-G1 | Same package and pinout, but includes auto-discharge function - pulls VOUT low after disable via internal 100–200Ω resistor. | Required in applications needing rapid VOUT discharge (e.g., fast-recovery USB suspend/resume). | Choose EMTR-G1 if automatic output discharge is mandatory; FMTR-G1 retains VOUT floating for hold-up or sequencing needs. |
Compared with TPS2051BDR, AP2820FMTR-G1 adds integrated fault flagging and fold-back protection without external components; versus AP2820EMTR-G1, it omits auto-discharge to support systems requiring VOUT retention post-disable.
Availability
AP2820FMTR-G1 is available at Aetrix Electronics and suitable for USB bus-powered hubs, notebook hot-plug peripherals, and motherboard power management requiring stable component supply, long-term lifecycle assurance, and green RoHS-compliant packaging.
Supply support for AP2820FMTR-G1 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
BCD Semiconductor Manufacturing Limited is a Shanghai-based analog and power IC designer specializing in high-efficiency, safety-certified power management solutions for consumer, computing, and industrial applications.
The AP2820 product line targets USB-compliant hot-swap power distribution, delivering integrated protection, low RDS(ON), and robust fault signaling in compact SOIC/MSOP packages for space-constrained designs.
FAQ
What is the purpose of the FLAG pin on AP2820FMTR-G1?
The FLAG pin is an open-drain output that actively pulls low during over-current, over-temperature, or under-voltage lockout events. It requires an external pull-up resistor and provides asynchronous fault indication to the host controller, enabling real-time USB port disable or system-level error logging without polling.
Does AP2820FMTR-G1 support automatic discharge of the output capacitor after shutdown?
No. AP2820FMTR-G1 does not include auto-discharge functionality. Unlike versions labeled "E" or "G", it leaves VOUT floating upon disable. This behavior supports applications requiring output voltage hold-up or controlled sequencing, but external discharge circuitry is needed if rapid VOUT decay is required.
Can AP2820FMTR-G1 be used in 3.3V-only systems?
Yes. With a minimum operating voltage of 2.7V and UVLO threshold of 2.5V, AP2820FMTR-G1 functions reliably in 3.3V systems. Its enable threshold (VENH ≥1.6V) and low 80μA supply current ensure compatibility with 3.3V GPIOs and low-power states without level-shifting.
How does the fold-back current limiting work during a short-circuit event?
Upon detecting over-current, AP2820FMTR-G1 reduces its output current from 2.5A to approximately 1.18A in fold-back mode. This lowers power dissipation in the MOSFET (P = I²R), preventing thermal runaway and allowing safe recovery once the short is removed-without latching off or requiring reset.
AP2820FMTR-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Type:
- USB Switch
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- N-Channel
- Interface:
- On/Off
- Voltage - Load:
- 2.7V ~ 5.5V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 2.5A
- Rds On (Typ):
- 60mOhm
- Input Type:
- Non-Inverting
- Features:
- Status Flag
- Fault Protection:
- Current Limiting (Fixed), Over Temperature, Reverse Current, UVLO
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AP2820FMTR-G1 FAQ
1.How can I place an order for AP2820FMTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2820FMTR-G1 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 AP2820FMTR-G1 reliable?
The price and inventory of AP2820FMTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2820FMTR-G1 is usually 5 days.
3.What payment methods are accepted for AP2820FMTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2820FMTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2820FMTR-G1?
AP2820FMTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2820FMTR-G1 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 AP2820FMTR-G1?
For technical support, including AP2820FMTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2820FMTR-G1 requirements.
6.How does Aetrix verify that AP2820FMTR-G1 is sourced from the original manufacturer or authorized distributors?
All AP2820FMTR-G1 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 AP2820FMTR-G1 meets industry standards.
7.What is the process for return or replacement of AP2820FMTR-G1?
All AP2820FMTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AP2820FMTR-G1, 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 AP2820FMTR-G1 part is unused and in its original packaging.
Return procedure for AP2820FMTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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