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Diodes Incorporated AP2151AS-13
- Part No.:
- AP2151AS-13
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AP2151AS-13.pdf
- Description:
- IC PWR SWITCH P-CHANNEL 1:1 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,461
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Product details
Overview
AP2151AS-13 from Diodes Incorporated is a single-channel, active-high, current-limited high-side power switch optimized for USB 2.0 hot-swap applications. It delivers 0.5A continuous load current with 95mΩ typical RDS(ON), 0.8A accurate current limiting, and integrated short-circuit/thermal protection in an SO-8 package. Used in USB host ports of laptops and docking stations to manage inrush, prevent bus faults, and report over-current via open-drain FLG.
For engineers reviewing the AP2151AS-13 datasheet, AP2151AS-13 pinout, AP2151AS-13 application, or AP2151AS-13 equivalent, key selection criteria include enable polarity, current-limit accuracy, thermal shutdown threshold (+140°C), rise time (0.6ms typ), and SO-8 package compatibility with legacy USB power distribution layouts.
Technical Context
The AP2151AS-13 integrates a low-RDS(ON) N-channel MOSFET with precision current-sense FET architecture, enabling accurate 0.8A current limiting without external resistors. Its UVLO (1.9V typ) ensures reliable turn-on only after stable input rail establishment, critical for hot-plug robustness.
It features a 7ms deglitch-timed open-drain FLG output that asserts low only after sustained over-current or over-temperature events-rejecting transient surges from capacitive loads. Thermal shutdown includes +25°C hysteresis, enabling safe auto-recovery cycling under persistent fault conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Current Limit | 0.8A typical; clamps output current precisely during overload, preventing upstream supply collapse. |
| RDS(ON) | 95mΩ at VIN = 5V, TA = +25°C; minimizes conduction loss and self-heating in SO-8 footprint. |
| Rise Time | 0.6ms typical; soft-starts downstream loads to limit inrush current in USB ports and hot-swap modules. |
| FLG Blanking | 7ms typical; suppresses false fault reporting from capacitor charging transients-no external RC needed. |
| UVLO Threshold | 1.9V typical; prevents erratic switching during brown-out or partial power-up sequences. |
| Shutdown Current | 1µA max; enables ultra-low-power standby in battery-backed or always-on systems. |
| Thermal Shutdown | +140°C trip with +25°C hysteresis; protects die during sustained short-circuit while allowing recovery if fault clears. |
Pinout & Package
AP2151AS-13 is supplied in SO-8 package (JEDEC MS-012AC) with exposed pad thermally connected to GND plane. Pin 1 is NC (no internal connection); pins 2 & 3 are IN (tied together externally); pins 6 & 7 are OUT (tied together externally).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | Primary return path for power and logic; must be low-impedance connection to PCB ground plane. |
| IN (Pins 2,3) | Voltage input | Connects to 2.7–5.5V supply rail; both pins must be shorted externally for full current capability. |
| EN (Pin 4) | Enable control | Active-high logic input; drives internal driver stage-requires ≥2V to enable switch. |
| FLG (Pin 5) | Fault indicator | Open-drain output pulled low during over-current or over-temperature; requires external pull-up. |
| OUT (Pins 6,7) | Voltage output | Switched output to load; both pins must be shorted externally to handle full 0.5A continuous current. |
| NC (Pin 8) | No connection | Internally unconnected; recommended to tie to OUT for EMI reduction and mechanical stability. |
Key Features
| Feature | Design Value |
|---|---|
| Reverse current blocking | Prevents backflow from output to input when disabled-critical for multi-rail USB systems with shared VBUS. |
| Controlled rise/fall time | 0.6ms rise / 0.05ms fall ensures smooth voltage ramping without overshoot or ringing on capacitive loads. |
| Integrated deglitch timer | 7ms blanking on FLG eliminates false triggers from inrush spikes-no external timing components required. |
| UL/IEC safety certification | UL Recognized (E322375) and IEC60950-1 CB certified-validates suitability for end-product safety compliance. |
| Green packaging | Halogen- and antimony-free, lead-free, RoHS 3 compliant-meets global environmental and regulatory mandates. |
Applications
| USB Host Port Protection | Laptop Docking Station Power Control |
|---|---|
|
Use Scenario: Protecting individual downstream USB ports on a laptop motherboard against short circuits and overloads. IC Role / Device Role / Timing Role: High-side power switch enforcing current limit and reporting faults to USB controller via FLG signal. Use Value: Prevents VBUS collapse during peripheral insertion, maintains system stability, and enables software-initiated port disable. |
Use Scenario: Managing power delivery to multiple peripherals (HDD, monitor, Ethernet) connected via a USB-C docking station. IC Role / Device Role / Timing Role: Independent channel switch per port, activated by host firmware to sequence power-up and isolate faults. Use Value: Enables selective port reset without rebooting host; 0.6ms rise time avoids simultaneous inrush across all peripherals. |
| Set-Top Box USB Peripheral Interface | Smartphone Charging Hub with Data+Power |
|
Use Scenario: Providing isolated 5V power to USB-connected storage devices (flash drives, HDDs) in consumer STBs. IC Role / Device Role / Timing Role: Hot-swap power gate with UVLO and thermal protection-ensures safe insertion/removal while powered. Use Value: Eliminates need for manual power cycling; FLG signal alerts system firmware of over-current before damage occurs. |
Use Scenario: Dual-purpose HDMI/MHL port delivering both video data and 5V charging power to smartphones/tablets. IC Role / Device Role / Timing Role: Pre-regulator switch ensuring VIN ramps fully before enabling downstream charging circuitry. Use Value: Prevents brown-out on charging IC during hot-insertion; reverse blocking stops battery discharge into host port. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side current-limited power switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP2151AW-7 | SOT25 package (smaller footprint, higher θJA = 157°C/W vs SO-8's 110°C/W); same electrical specs. | Better suited for space-constrained portable designs; requires tighter thermal layout due to lower power dissipation margin. | Select when board area is critical and ambient temperature remains ≤60°C with adequate copper pour. |
| AP2151AFM-7 | U-DFN2018-6 package (2.0×1.8mm, exposed pad); RDS(ON) = 90mΩ typ; θJA = 70°C/W. | Optimized for ultra-compact, high-density USB Type-C modules requiring lowest thermal resistance and minimal height. | Choose for next-gen miniaturized hubs or embedded USB controllers where thermal performance outweighs assembly complexity. |
Compared with AP2151AW-7 and AP2151AFM-7, the AP2151AS-13 offers the best balance of thermal margin (110°C/W), legacy SO-8 compatibility, and ease of rework-making it ideal for industrial and computing applications where reliability and serviceability are prioritized over size.
Availability
AP2151AS-13 is available at Aetrix Electronics and suitable for USB host port protection, laptop docking station power control, and set-top box peripheral interfaces requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for AP2151AS-13 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 high-volume electronics markets.
The AP2151A family targets USB 2.0-compliant power distribution, delivering robust hot-swap capability with integrated protection-designed specifically for consumer, computing, and communications equipment needing reliable, low-component-count port power control.
FAQ
What is the maximum continuous output current rating for AP2151AS-13?
The AP2151AS-13 is rated for 0.5A maximum continuous load current per Diodes' Recommended Operating Conditions. Although its current limit is 0.8A typical, sustained operation above 0.5A requires careful thermal design due to SO-8 package limitations-θJA = 110°C/W means >0.5A risks exceeding +150°C junction temperature at +85°C ambient.
Does AP2151AS-13 require external components for basic operation?
No external components are required for core functionality: EN control, current limiting, FLG reporting, and thermal protection operate autonomously. However, Diodes recommends a 0.01–0.1μF ceramic bypass capacitor between IN and GND, plus ≥10μF bulk capacitance on IN/OUT, to suppress transients and ensure stable hot-swap behavior per Application Information guidelines.
How does the FLG pin behave during a short-circuit event?
During a short-circuit, FLG remains high for ~7ms (deglitch timeout), then pulls low and stays low until both over-current and over-temperature conditions clear. If the short persists, FLG stays asserted low; if the fault clears, FLG returns high within microseconds after the thermal/over-current condition ends-no latch or reset required.
Can AP2151AS-13 be used in automotive applications?
AP2151AS-13 is not AEC-Q200 qualified and operates only from –40°C to +85°C ambient-below automotive Grade 2 (–40°C to +105°C) requirements. Its UVLO (1.9V) and thermal shutdown (+140°C) also lack the extended margins needed for automotive power rails. It is intended for commercial/industrial computing and consumer electronics, not under-hood or infotainment systems.
AP2151AS-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Type:
- USB Switch
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- P-Channel
- Interface:
- On/Off
- Voltage - Load:
- 2.7V ~ 5.5V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 500mA
- Rds On (Typ):
- 95mOhm
- 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-SO
AP2151AS-13 FAQ
1.How can I place an order for AP2151AS-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2151AS-13 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 AP2151AS-13 reliable?
The price and inventory of AP2151AS-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2151AS-13 is usually 5 days.
3.What payment methods are accepted for AP2151AS-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2151AS-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2151AS-13?
AP2151AS-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2151AS-13 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 AP2151AS-13?
For technical support, including AP2151AS-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2151AS-13 requirements.
6.How does Aetrix verify that AP2151AS-13 is sourced from the original manufacturer or authorized distributors?
All AP2151AS-13 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 AP2151AS-13 meets industry standards.
7.What is the process for return or replacement of AP2151AS-13?
All AP2151AS-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP2151AS-13, 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 AP2151AS-13 part is unused and in its original packaging.
Return procedure for AP2151AS-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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