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Diodes Incorporated AP2146SG-13
- Part No.:
- AP2146SG-13
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AP2146SG-13.pdf
- Description:
- IC PWR SWITCH P-CHANNEL 1:2 8SOP
- Quantity:
- Payment:
- Shipping:
Inventory:15,841
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Product details
Overview
AP2146SG-13 from Diodes Incorporated is a dual-channel, active-low enable, high-side USB power switch with 0.8A current limiting, 90mΩ on-resistance (MSOP-8EP), 2.7V–5.5V input range, and integrated short-circuit/thermal protection - deployed in USB 2.0 host/hub ports and hot-swap modules for consumer electronics and computing.
For engineers reviewing the AP2146SG-13 datasheet, AP2146SG-13 pinout, AP2146SG-13 application, or AP2146SG-13 equivalent, this device delivers precise current-limited power control with deglitched fault reporting, reverse current blocking, and controlled 0.6ms rise time - critical for reliable USB port management and hot-plug safety compliance.
Technical Context
The AP2146SG-13 integrates two independent high-side N-channel MOSFET power switches with matched current-limit thresholds (0.8A typ), UVLO (1.9V typ), and thermal shutdown at +140°C with +25°C hysteresis. Each channel features open-drain FLG outputs with 7ms deglitch timing to suppress false over-current triggers during capacitive load turn-on.
It implements sense-FET-based current monitoring without external resistors, enabling accurate ILIMIT clamping and fast short-circuit response (<20µs). The active-low EN1/EN2 inputs allow direct interfacing with USB controller GPIOs, while reverse current blocking prevents backfeed from powered downstream loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Current Limit (Typ) | 0.8A per channel - ensures safe USB 2.0 port compliance and prevents damage during sustained overload. |
| RDS(ON) (MSOP-8EP) | 90mΩ at 5V, 0.5A - minimizes voltage drop and power loss in compact USB hub designs. |
| Input Voltage Range | 2.7V–5.5V - supports full USB 2.0 VBUS tolerance and accommodates brown-out conditions. |
| Rise Time (Typ) | 0.6ms - provides soft-start behavior to limit inrush current into downstream capacitive loads. |
| FLG Blanking Time | 7ms typ - eliminates false fault reporting during transient load surges without external RC networks. |
| Shutdown Current | 1µA max - enables ultra-low-power standby in battery-backed or always-on USB systems. |
| UVLO Threshold | 1.9V typ - guarantees switch remains off until stable supply is established, preventing erratic hot-plug behavior. |
| Thermal Shutdown | +140°C with +25°C hysteresis - enables self-recovering fault handling under prolonged short-circuit stress. |
Pinout & Package
AP2146SG-13 is supplied in SO-8 package (lead-free, RoHS-compliant "Green" molding compound) with exposed pad thermally connected to GND. Pin numbering follows standard top-view layout: EN1 (1), FLG1 (2), FLG2 (3), EN2 (4), OUT2 (5), GND (6), IN (7), OUT1 (8).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1 / EN2 | Active-low enable input per channel | Directly driven by USB controller GPIO; low = channel enabled; no pull-up required. |
| FLG1 / FLG2 | Open-drain fault report output | Asserts low after 7ms deglitch on over-current or thermal fault; requires external pull-up. |
| IN | Main power input (VBUS) | Accepts 2.7V–5.5V; connects to upstream USB power rail before downstream load distribution. |
| OUT1 / OUT2 | Switched output per channel | Drives individual USB downstream ports; blocks reverse current when disabled. |
| GND | Power and signal reference | Must be connected to system ground; exposed pad must be soldered to thermal pad for θJA = 110°C/W. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent USB power switches | Enables discrete control of two downstream ports with separate EN/FLG signals - essential for USB hub fault isolation. |
| Accurate 0.8A current limiting | Guarantees consistent trip point across temperature (-40°C to +85°C), eliminating need for external current-sense resistors. |
| Reverse current blocking | Prevents backfeed from powered peripherals (e.g., USB devices with local batteries) into main VBUS rail - improves system safety. |
| 7ms deglitched FLG output | Suppresses false fault assertions during capacitor charging transients - removes requirement for external blanking circuitry. |
| 0.6ms typical rise time | Controls inrush current into 68µF downstream loads, reducing peak surge stress on upstream power supplies and connectors. |
| UL Recognized & IEC60950-1 CB certified | Validates safety compliance for end-equipment certification in consumer, computing, and industrial USB applications. |
Applications
| USB Host Port Protection | Self-Powered Hub Power Management |
|---|---|
|
Use Scenario: Desktop PC motherboard with dual downstream USB 2.0 ports requiring independent over-current protection and hot-plug robustness. IC Role / Device Role / Timing Role: High-side power switch controlling VBUS delivery per port; enables/disables power via USB controller GPIO with 0.6ms soft-start timing. Use Value: Prevents bus-wide shutdown during single-port overload; maintains system-level USB enumeration integrity while protecting upstream power rail. |
Use Scenario: Standalone 4-port USB hub with two AP2146SG-13 devices managing two pairs of downstream ports. IC Role / Device Role / Timing Role: Dual-channel current-limited switch providing per-port power enable, fault reporting (FLG), and UVLO-locked startup sequencing. Use Value: Enables individual port disable/recovery without resetting entire hub; meets USB-IF current-limit and reporting requirements. |
| Hot-Swap Module Control | LCD Monitor USB Hub Integration |
|
Use Scenario: Industrial docking station inserting peripheral cards while main system remains powered. IC Role / Device Role / Timing Role: Hot-plug power sequencer with controlled rise/fall times and reverse-blocking - manages VCC ramp to inserted PCBs. Use Value: Limits inrush to <1A per port, avoids triggering upstream supply OCP, and prevents backfeed from module-local regulators. |
Use Scenario: LCD monitor with built-in USB 2.0 hub for keyboard/mouse connectivity. IC Role / Device Role / Timing Role: Dual-channel VBUS switch delivering regulated 5V to downstream ports with thermal/short-circuit recovery. Use Value: Ensures monitor remains operational even if attached USB device shorts - isolates fault to single port without affecting display function. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel USB power switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TUSB2036IPWR | Integrated USB 2.0 hub controller + PHY + power switches; includes USB protocol logic and 3.3V LDO; not a standalone switch. | Requires full USB enumeration stack support; replaces microcontroller + discrete switch solution. | Select only when full hub functionality (repeater, transaction translation) is needed - not for simple power switching. |
| TPS2051BDR | Single-channel, 0.5A current limit, 120mΩ RDS(ON), no FLG deglitch, no reverse blocking, SO-8 only. | Requires two units for dual-port use; lacks coordinated fault reporting and thermal hysteresis. | Use only for cost-sensitive, non-USB-certified applications where 0.5A limit and basic OCP suffice. |
Compared with TUSB2036IPWR and TPS2051BDR, AP2146SG-13 delivers dedicated dual-channel USB power switching with tighter current accuracy (0.8A vs 0.5A), lower RDS(ON), reverse blocking, and integrated 7ms FLG blanking - making it optimal for discrete, standards-compliant USB port protection without protocol overhead.
Availability
AP2146SG-13 is available at Aetrix Electronics and suitable for USB 2.0 host port protection, self-powered hub power management, and hot-swap module control requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for AP2146SG-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 AP2146SG-13 belongs to Diodes' USB power switch product line, engineered specifically for robust, standards-compliant USB 2.0 port power control with integrated fault protection and thermal resilience.
FAQ
What is the difference between AP2146SG-13 and AP2156SG-13?
The AP2146SG-13 uses active-low enable inputs (EN1/EN2), while the AP2156SG-13 uses active-high enables. Both share identical current limit (0.8A), RDS(ON), thermal shutdown, and FLG behavior. Pinout, package, and electrical specs are identical - only logic polarity differs, allowing direct substitution when enable signal polarity is adjusted in firmware or hardware.
Does AP2146SG-13 require external components for over-current protection?
No. AP2146SG-13 integrates current-sensing FETs, thermal shutdown circuitry, and 7ms deglitch timing on FLG outputs - eliminating the need for external current-sense resistors, RC blanking networks, or thermal sensors. Only recommended input/output ceramic bypass capacitors (0.1µF each) are required for stable operation.
Can AP2146SG-13 drive a 1A load?
No. Its absolute maximum continuous load current is rated at 0.5A per channel per datasheet recommendations, despite 0.8A current-limit threshold. Sustained operation above 0.5A risks exceeding thermal limits in SO-8 package (θJA = 110°C/W); derating is required for ambient temperatures >+60°C or high-duty-cycle loads.
Is reverse current blocking effective at 0V input?
Yes. When disabled (EN high), AP2146SG-13 blocks reverse current from VOUT to VIN down to 0V input, with leakage <1µA at VOUT = 5V and VIN = 0V. This prevents backfeed from downstream devices with local power sources - critical for USB OTG and battery-backed peripherals.
AP2146SG-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:
- 2
- Ratio - Input:Output:
- 1:2
- 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):
- 100mOhm
- 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-SOP
AP2146SG-13 FAQ
1.How can I place an order for AP2146SG-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2146SG-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 AP2146SG-13 reliable?
The price and inventory of AP2146SG-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2146SG-13 is usually 5 days.
3.What payment methods are accepted for AP2146SG-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2146SG-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2146SG-13?
AP2146SG-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2146SG-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 AP2146SG-13?
For technical support, including AP2146SG-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2146SG-13 requirements.
6.How does Aetrix verify that AP2146SG-13 is sourced from the original manufacturer or authorized distributors?
All AP2146SG-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 AP2146SG-13 meets industry standards.
7.What is the process for return or replacement of AP2146SG-13?
All AP2146SG-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP2146SG-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 AP2146SG-13 part is unused and in its original packaging.
Return procedure for AP2146SG-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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