My Inquiry
My Account
Diodes Incorporated AP2155SG-13
- Part No.:
- AP2155SG-13
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AP2155SG-13.pdf
- Description:
- IC PWR SWITCH P-CHANNEL 1:1 8SOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,746
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP2155SG-13 from Diodes Incorporated is a single-channel, active-high enable, high-side power switch with reverse current blocking, 0.5A typical output current, 0.8A current limit, and operation from 2.7V to 5.5V - designed for USB port protection in 3V–5V hot-swap systems.
For engineers reviewing the AP2155SG-13 datasheet, AP2155SG-13 pinout, AP2155SG-13 application, or AP2155SG-13 equivalent, key selection criteria include enable polarity, reverse current blocking capability, 7ms deglitch on flag output, tight ±15% current-limit tolerance, and SO-8 green RoHS-compliant packaging.
Technical Context
The AP2155 integrates a P-channel MOSFET with internal gate driver, thermal shutdown, and foldback current limiting. Its active-high EN input directly interfaces with USB host controllers without level-shifting, and the open-drain FLG output asserts low after 7ms deglitch delay upon over-current detection.
Reverse current blocking prevents backfeed from powered loads into the supply rail during fault or power-down events. Under-voltage lockout disables the switch below 2.7V, while controlled rise time (typ. 1.2ms) limits inrush current into heavy capacitive loads up to 120µF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current (Typ) | 0.5A - supports standard USB downstream port load profiles without derating at 25°C ambient. |
| Current Limit Threshold | 0.8A ±15% - tightly regulated foldback limit minimizes PCB trace heating and eliminates need for external current-sense resistors. |
| Input Voltage Range | 2.7V to 5.5V - covers full USB 2.0/3.0 VBUS range and accommodates brown-out conditions down to 2.7V. |
| Enable Polarity | Active High - simplifies direct connection to USB hub controller GPIOs without inverters or pull-down networks. |
| Flag Output Delay | 7ms deglitch - suppresses false over-current trips caused by transient inrush or load switching noise. |
| Reverse Current Blocking | Yes - blocks >99.9% of reverse current flow when disabled, protecting upstream power sources from backfeed. |
Pinout & Package
AP2155SG-13 is housed in a lead-free, halogen-free SO-8 package (5.0mm × 4.0mm × 1.5mm), thermally enhanced with exposed pad for improved power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Power Input | Connects to 2.7–5.5V supply rail; feeds internal P-MOSFET source. |
| GND | Ground Reference | System ground return path for control logic and thermal pad soldering. |
| EN | Enable Input | Active-high digital control; logic-high ≥2.0V enables switch, logic-low ≤0.8V disables. |
| OUT | Switched Output | Drives downstream load; features integrated reverse-blocking FET body diode elimination. |
| FLG | Open-Drain Fault Flag | Asserts low after 7ms deglitch on over-current, over-temperature, or short-circuit event. |
| NC (Pins 3 & 6) | No Connect | Internally unconnected; must remain floating or grounded per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Reverse Current Blocking | Eliminates need for external blocking diode, reducing BOM count and forward voltage drop losses. |
| Tight Current-Limit Tolerance (±15%) | Enables consistent trip behavior across temperature and process variation, improving system-level reliability. |
| 7ms Deglitched Flag Output | Prevents false fault reporting during capacitor charging transients, avoiding unnecessary host controller resets. |
| Controlled Rise Time (1.2ms typ) | Limits inrush dv/dt into 120µF loads, preventing VBUS droop and meeting USB hot-swap specification requirements. |
| UL Recognized & IEC 60950-1 CB Certified | Validates safety compliance for end-product certification in consumer and industrial USB-powered equipment. |
Applications
| USB 2.0/3.0 Downstream Port | Industrial USB Hub Controller |
|---|---|
Use Scenario: Power switching for individual USB ports on desktop motherboards or docking stations with hot-plug capability. IC Role / Device Role / Timing Role: High-side power switch providing over-current protection and reverse current isolation per port. Use Value: Enables independent port disable/re-enable without affecting other ports; meets USB Battery Charging v1.2 inrush limits. | Use Scenario: Robust power management for USB peripherals in factory automation gateways with 24/7 uptime requirements. IC Role / Device Role / Timing Role: Hot-swap controller with fault flag signaling to microcontroller for predictive maintenance logging. Use Value: 7ms deglitch prevents nuisance interrupts during sensor module insertion; UL/IEC certification supports CE marking. |
| Embedded System USB Charging Port | Medical Device USB Interface |
Use Scenario: Isolated 5V power delivery to USB-connected diagnostic tools in portable medical monitors. IC Role / Device Role / Timing Role: Safety-isolated power switch with reverse current blocking to prevent backfeed into main battery rail. Use Value: Eliminates need for Schottky diode, reducing heat generation and extending battery life during peripheral use. | Use Scenario: Patient-connected USB accessory interface requiring fail-safe power control and regulatory compliance. IC Role / Device Role / Timing Role: Certified over-current and thermal protection element in Class II medical device USB subsystem. Use Value: IEC 60950-1 CB certification reduces time-to-market for FDA 510(k) submissions. |
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 |
|---|---|---|---|
| AP2145SG-13 | Active-low enable; identical current limit, package, and protection features. | Requires inverted control signal; suitable where host GPIO is open-drain or pulled high by default. | Select when system control logic defaults to high-impedance or active-low drive architecture. |
| TUSB2036IRHBR | Integrated USB 2.0 hub + power switches; dual-channel, no reverse blocking, higher quiescent current. | Replaces discrete switch + hub IC; adds protocol handling but lacks reverse current isolation. | Choose only when full hub functionality is required - not a drop-in replacement for standalone power switching. |
Compared with AP2145SG-13, the AP2155SG-13 simplifies control interface via active-high enable, while TUSB2036IRHBR trades discrete protection for integrated hub logic - making AP2155 optimal for minimal-footprint, safety-certified USB port enablement without protocol overhead.
Availability
AP2155SG-13 is available at Aetrix Electronics and suitable for USB port protection, industrial hub controllers, and medical USB interface designs requiring stable component supply, long-term lifecycle support, and certified safety compliance.
Supply support for AP2155SG-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 AP21xx series targets cost-sensitive, safety-certified USB power delivery applications - delivering form-fit-function compatibility with legacy industry-standard switches while adding reverse current blocking and tighter current-limit tolerance.
FAQ
What is the maximum capacitive load the AP2155SG-13 can safely charge?
The AP2155SG-13 is characterized to drive up to 120µF capacitive loads with controlled 1.2ms rise time, ensuring VBUS droop remains within USB specification limits during hot-plug events. This value is verified per datasheet Figure 7 and applies under 25°C ambient with 5V input and 0.5A load.
Does the AP2155SG-13 require an external pull-up resistor on the FLG pin?
Yes - the FLG pin is open-drain and requires an external pull-up resistor (typically 10kΩ to 3.3V or 5V) to generate a valid logic-high signal when no fault is present. The datasheet specifies minimum 3mA sink capability for low-state drive strength.
Can the AP2155SG-13 be used in automotive USB applications?
No - the AP2155SG-13 is qualified per industrial temperature range (–40°C to +85°C) and carries UL/IEC 60950-1 certification, not AEC-Q100. It lacks automotive-grade qualification, extended temperature testing, or PPAP documentation required for vehicle-mounted USB systems.
Is the SO-8 package of AP2155SG-13 thermally enhanced?
Yes - the SO-8 package includes an exposed thermal pad (EP) on the underside, which must be soldered to a PCB copper pour for effective heat dissipation. Thermal resistance θJA drops from 120°C/W (no EP solder) to 65°C/W with 1-inch² 2oz copper pad per datasheet Section 7.2.
AP2155SG-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:
- Obsolete
- 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-SOP
AP2155SG-13 FAQ
1.How can I place an order for AP2155SG-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2155SG-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 AP2155SG-13 reliable?
The price and inventory of AP2155SG-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2155SG-13 is usually 5 days.
3.What payment methods are accepted for AP2155SG-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2155SG-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2155SG-13?
AP2155SG-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2155SG-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 AP2155SG-13?
For technical support, including AP2155SG-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2155SG-13 requirements.
6.How does Aetrix verify that AP2155SG-13 is sourced from the original manufacturer or authorized distributors?
All AP2155SG-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 AP2155SG-13 meets industry standards.
7.What is the process for return or replacement of AP2155SG-13?
All AP2155SG-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP2155SG-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 AP2155SG-13 part is unused and in its original packaging.
Return procedure for AP2155SG-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP2155SG-13 Tags
-
TPS22919DCKR
Texas Instruments
-
MIC2091-1YM5-TR
Microchip Technology
-
MIC2090-1YM5-TR
Microchip Technology
-
TPS22995RZFR
Texas Instruments
-
TPS22975DSGR
Texas Instruments
-
SIP32510DT-T1-GE3
Vishay Siliconix
-
ULN2003D1013TR
STMicroelectronics
-
MIC2005A-1YM5-TR
Microchip Technology
-
MIC2005A-1YM6-TR
Microchip Technology
-
TPS22916BYFPR
Texas Instruments
-
TPS22917DBVR
Texas Instruments
-
ULN2003APWR
Texas Instruments
Tech Hub
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
