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Diodes Incorporated AP2151DSG-13
- Part No.:
- AP2151DSG-13
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AP2151DSG-13.pdf
- Description:
- IC PWR SWITCH P-CHANNEL 1:1 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,310
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Product details
Overview
AP2151DSG-13 from Diodes Incorporated is a single-channel, active-high enable, high-side USB power switch with integrated output discharge, 0.8A current limiting, 90mΩ RDS(ON), and 7ms deglitched fault reporting - designed for USB 2.0-compliant hot-swap ports in laptops and docking stations.
For engineers reviewing the AP2151DSG-13 datasheet, AP2151DSG-13 pinout, AP2151DSG-13 application, or AP2151DSG-13 equivalent, key selection criteria include enable polarity compatibility, thermal shutdown threshold (140°C), output discharge resistance (100Ω), and SO-8 package thermal performance (θJA = 127°C/W).
Technical Context
The AP2151DSG-13 implements a controlled gate-drive architecture with slew-rate limiting to achieve 0.6ms typical rise time and suppress inrush current during hot-plug events. Its internal sense-FET current monitoring enables accurate 0.8A over-current protection without external sensing resistors.
It integrates undervoltage lockout (UVLO) at 1.9V (typ), reverse current blocking, and thermal shutdown with 25°C hysteresis. The open-drain FLG output asserts low after 7ms blanking time for both over-current and over-temperature faults, eliminating false triggering from capacitive load transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Current Limit | 0.8A typical - maintains safe power delivery under sustained overload without latch-off. |
| RDS(ON) | 90mΩ max (U-DFN2018-6), 115mΩ max (SO-8) - minimizes conduction loss and self-heating at 500mA load. |
| Input Voltage Range | 2.7V–5.5V - supports full USB 2.0 bus voltage range including degraded 3.3V systems. |
| Enable Polarity | Active-high - simplifies direct interface with 3.3V/5V logic without level-shifting. |
| FLG Blanking Time | 7ms typical - suppresses false fault reports during capacitor charging transients. |
| Discharge Resistance | 100Ω - discharges 1µF output cap to <0.5V in ≤0.6ms, preventing backfeed during disable. |
| Shutdown Current | 1µA max - enables ultra-low-power standby in battery-backed USB peripherals. |
Pinout & Package
AP2151DSG-13 is packaged in SO-8 (lead-free, RoHS-compliant) with exposed pad thermally connected to GND. Pin 1 = GND, Pin 2/3 = IN (tied externally), Pin 4 = EN (active-high), Pin 5 = FLG (open-drain), Pin 6/7 = OUT (tied externally), Pin 8 = NC (recommended tied to OUT).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Power ground reference | Primary thermal and electrical return path; exposed pad must be soldered to PCB ground plane. |
| IN (Pins 2,3) | Input voltage supply | Dual pins reduce trace inductance and improve current sharing; both must be shorted externally. |
| EN (Pin 4) | Enable control input | Active-high logic interface; accepts 2.0V–5.5V valid high; 0–0.8V valid low. |
| FLG (Pin 5) | Fault reporting output | Open-drain, active-low signal indicating over-current or over-temperature; requires external pull-up. |
| OUT (Pins 6,7) | Switched output | Dual pins lower on-resistance and thermal impedance; both must be shorted externally to load. |
| NC (Pin 8) | No internal connection | Not bonded; recommended tied to OUT for mechanical stability and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Output Discharge Function | Internal 100Ω NMOS discharge path activated on disable - eliminates need for external bleed resistor. |
| Reverse Current Blocking | Automatic MOSFET body-diode override - prevents backfeed from loaded output to input rail when disabled. |
| UVLO with Hysteresis | 1.9V turn-on threshold with ~0.6V hysteresis - ensures clean power-up sequencing and prevents oscillation near brownout. |
| Thermal Protection | 140°C shutdown with 25°C hysteresis - enables safe auto-recovery cycling during sustained overload without latch-off. |
| ESD Robustness | 15kV IEC 61000-4-2 (system-level) - protects against real-world handling and connector insertion surges. |
Applications
| USB Hub Power Management | Laptop Docking Station Port |
|---|---|
|
Use Scenario: Individual USB port power control in multi-port hubs with independent over-current protection per port. IC Role / Device Role / Timing Role: High-side power switch enabling/disabling VBUS per port with 7ms-deglitched fault reporting. Use Value: Prevents hub-wide shutdown during single-port short circuit; supports USB 2.0 compliance via controlled 0.6ms rise time. |
Use Scenario: Hot-plug detection and power ramp control for peripheral devices inserted into powered laptop docks. IC Role / Device Role / Timing Role: Active-high enable switch providing soft-start (1ms ramp) and reverse-current blocking during insertion/removal. Use Value: Eliminates inrush spikes >2A; blocks backfeed from dock's 5V rail into peripheral battery during disconnect. |
| Set-Top Box USB Peripheral Port | Smartphone Charging Port Protection |
|
Use Scenario: USB-A port powering external storage or keyboards in consumer STBs with limited thermal margin. IC Role / Device Role / Timing Role: Thermal-limited power switch with 140°C shutdown and 25°C hysteresis for self-recovering fault handling. Use Value: Sustains operation under 500mA continuous load without derating; avoids permanent latch-off during transient overloads. |
Use Scenario: Isolation of USB data/power lines in dual-role smartphone ports where host/peripheral roles alternate. IC Role / Device Role / Timing Role: Output-discharge-enabled switch ensuring VBUS drops to <0.5V within 0.6ms after disable to meet USB Battery Charging spec. Use Value: Enables fast port role reversal without residual voltage causing handshake failures or IC damage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side USB power switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TUSB2036IPW | Integrated USB 2.0 hub controller + power switches; 3-port, no output discharge. | Requires full hub functionality; not a discrete switch replacement. | Select only when adding hub logic is required; not drop-in for AP2151DSG-13. |
| TPS2051BDBVR | Active-high enable, 0.5A limit, 120mΩ RDS(ON), no integrated discharge or 15kV ESD. | Lacks output discharge and system-level ESD rating - requires external RC network for safe hot-plug. | Use where cost sensitivity outweighs discharge requirement and ESD robustness is secondary. |
Compared with TUSB2036IPW and TPS2051BDBVR, AP2151DSG-13 uniquely combines active-high enable, 0.8A current limit, integrated 100Ω discharge, and 15kV IEC ESD protection in SO-8 - making it optimal for standalone USB port protection where minimal BOM count and robust field reliability are critical.
Availability
AP2151DSG-13 is available at Aetrix Electronics and suitable for USB 2.0 hub designs, laptop docking station power distribution, and set-top box peripheral ports requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AP2151DSG-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 consumer and industrial markets.
The AP2151D product line targets USB-compliant hot-swap power switching, emphasizing integration of protection features (UVLO, thermal shutdown, discharge) and robustness (15kV ESD, reverse-current blocking) in compact surface-mount packages.
FAQ
What is the maximum continuous load current supported by AP2151DSG-13?
The AP2151DSG-13 supports 500mA maximum continuous load current per its Recommended Operating Conditions. Although its current limit is 0.8A, sustained operation above 500mA requires thermal derating based on θJA = 127°C/W (SO-8) and ambient temperature - exceeding this risks thermal shutdown activation.
Does AP2151DSG-13 require external components for basic USB port protection?
No external components are required for core protection functions. The device integrates UVLO, 7ms FLG deglitch, 100Ω discharge, and reverse-current blocking. Only a 0.1µF ceramic bypass capacitor between IN and GND (near the package) and an external pull-up on FLG are recommended for reliable operation.
How does the output discharge function operate during disable?
When EN is de-asserted, an internal NMOS transistor connects OUT to GND through a 100Ω path. For a 1µF output capacitor, VOUT falls below 0.5V in ≤0.6ms. This prevents backfeed into upstream rails and satisfies USB BC 1.2 discharge timing requirements without external circuitry.
Can AP2151DSG-13 be used in automotive applications?
AP2151DSG-13 is specified for –40°C to +85°C ambient operation and qualified to JEDEC standards, but it lacks AEC-Q100 qualification, automotive-grade ESD (ISO 10605), or extended temperature range (–40°C to +125°C). It is intended for commercial/industrial USB applications, not under-hood automotive use.
AP2151DSG-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:
- Load Discharge, 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
AP2151DSG-13 FAQ
1.How can I place an order for AP2151DSG-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2151DSG-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 AP2151DSG-13 reliable?
The price and inventory of AP2151DSG-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2151DSG-13 is usually 5 days.
3.What payment methods are accepted for AP2151DSG-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2151DSG-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2151DSG-13?
AP2151DSG-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2151DSG-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 AP2151DSG-13?
For technical support, including AP2151DSG-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2151DSG-13 requirements.
6.How does Aetrix verify that AP2151DSG-13 is sourced from the original manufacturer or authorized distributors?
All AP2151DSG-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 AP2151DSG-13 meets industry standards.
7.What is the process for return or replacement of AP2151DSG-13?
All AP2151DSG-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP2151DSG-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 AP2151DSG-13 part is unused and in its original packaging.
Return procedure for AP2151DSG-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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