My Inquiry
My Account
Diodes Incorporated AP2181MPG-13
- Part No.:
- AP2181MPG-13
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
AP2181MPG-13.pdf
- Description:
- IC PWR SWITCH 1CH USB 1.5A 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,499
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP2181MPG-13 from Diodes Incorporated is a single-channel, active-low high-side USB power switch with 2.1A current limiting, 95mΩ RDS(ON) at 5V, and integrated short-circuit/thermal protection. It operates from 2.7V–5.5V input, features 0.6ms typical rise time and 7ms FLG deglitch, and is used in USB 2.0 hot-swap ports for laptops, docking stations, and set-top boxes.
For engineers reviewing the AP2181MPG-13 datasheet, AP2181MPG-13 pinout, AP2181MPG-13 application, or AP2181MPG-13 equivalent, key selection criteria include enable polarity (active-low), fault reporting behavior, thermal shutdown threshold (+140°C), and package-specific thermal resistance (70°C/W for U-DFN2018-6).
Technical Context
The AP2181MPG-13 integrates a low-RDS(ON) N-channel MOSFET with current-sense FET architecture, enabling accurate 2.1A over-current limiting without external sense resistors. Its UVLO triggers at 1.9V (typ) and disables the switch below that threshold to prevent unstable operation during power ramp-up.
It implements open-drain FLG output with 7ms internal deglitching to suppress false fault reports during capacitive load inrush. Thermal protection activates at +140°C with +25°C hysteresis, cycling the switch until fault removal - no latch-up or manual reset required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Current Limit | 2.1A typical - clamps output current during overload without device damage |
| RDS(ON) | 95mΩ max at 5V, +25°C - minimizes conduction loss and self-heating under 1.5A continuous load |
| Input Voltage Range | 2.7V–5.5V - supports full USB 2.0 bus voltage tolerance and brown-out immunity |
| Enable Polarity | Active-low - logic-compatible with standard USB host controller EN signals |
| FLG Blanking Time | 7ms typical - suppresses false over-current flags during 100µF output capacitor charging |
| Shutdown Current | 1µA max - enables ultra-low-power system standby states |
| Thermal Shutdown | +140°C trip, +25°C hysteresis - provides autonomous recovery after transient overloads |
Pinout & Package
AP2181MPG-13 is packaged in U-DFN2018-6 (2.0mm × 1.8mm, 0.5mm pitch), with exposed thermal pad connected to GND for enhanced heat dissipation (θJA = 70°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference and thermal pad connection | Must be soldered to PCB ground plane via thermal vias; not for signal return path |
| 2 (IN) | Power input supply node | Accepts 2.7V–5.5V; requires local 0.01–0.1µF ceramic bypass capacitor |
| 3 (EN) | Active-low enable control | Pulled high internally; driven low to activate switch; VIH ≥2.0V, VIL ≤0.8V |
| 4 (FLG) | Open-drain fault indicator | Active-low during over-current or thermal fault; 7ms deglitch prevents false triggering |
| 5,6 (OUT) | Switched power output | Drives downstream USB port; all OUT pins must be tied together externally |
Key Features
| Feature | Design Value |
|---|---|
| Reverse current blocking | Prevents backflow from OUT to IN when disabled - eliminates need for external blocking diode |
| Controlled rise/fall time | 0.6ms rise / 0.05ms fall - limits inrush current to <1.5A during hot-plug, reducing EMI and stress on upstream supply |
| Integrated UVLO | 1.9V threshold - ensures switch remains off until stable USB bus voltage is established |
| No external components for fault blanking | 7ms internal deglitch on FLG - removes need for RC filter or microcontroller debouncing logic |
| Green packaging | Halogen- and antimony-free, RoHS-compliant U-DFN2018-6 - meets IEC60950-1 CB Scheme and UL E322375 |
Applications
| USB 2.0 Host Port Protection | Hot-Pluggable Docking Station |
|---|---|
|
Use Scenario: Single downstream USB port on a laptop motherboard requiring over-current protection and hot-insertion capability. IC Role / Device Role / Timing Role: High-side power switch controlling VBUS delivery; enables soft-start via controlled 0.6ms rise time. Use Value: Prevents host controller reset during peripheral insertion by limiting inrush to ≤1.5A and reporting faults via FLG to firmware. |
Use Scenario: Power switching for USB peripherals (keyboard, SSD, Ethernet adapter) added to a desktop docking station while powered. IC Role / Device Role / Timing Role: Hot-swap controller managing VBUS sequencing; UVLO ensures safe power-off during cable disconnection. Use Value: Eliminates mechanical interlocks and external timing circuits - full hot-plug compliance achieved with single IC and no BOM additions. |
| Set-Top Box USB Peripheral Port | LCD Monitor USB Hub |
|
Use Scenario: Front-panel USB port on an IPTV set-top box powering flash drives or wireless adapters. IC Role / Device Role / Timing Role: Current-limited power gate with thermal foldback; FLG alerts SoC of sustained overload (e.g., shorted drive). Use Value: Sustains 1.5A continuous load at +85°C ambient using U-DFN2018-6's 70°C/W θJA, avoiding derating or heatsinks. |
Use Scenario: Integrated USB hub in a 27-inch LCD monitor supplying power to connected webcams or speakers. IC Role / Device Role / Timing Role: Independent channel switch per downstream port; reverse current blocking isolates failed ports. Use Value: Enables per-port power cycling via EN without affecting other ports - improves system reliability and user experience. |
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 |
|---|---|---|---|
| AP2191MPG-13 | Same silicon, active-high EN pin - requires inverted control signal | Compatible in same PCB layout but needs host GPIO polarity adjustment | Select when system MCU outputs active-high enable signals natively |
| TCK112G,LF | 2.5A limit, 65mΩ RDS(ON), 1.8V–6V range - higher performance, different package (SOT-23-5) | Not pin-compatible; requires layout change and revalidation of thermal design | Choose for lower conduction loss in space-constrained designs where 2.5A headroom is needed |
Compared with AP2191MPG-13, AP2181MPG-13 offers identical protection and timing but simplifies interface to legacy USB controllers with active-low EN. Versus TCK112G, it trades lower RDS(ON) for proven USB 2.0 compliance and broader package availability including U-DFN2018-6.
Availability
AP2181MPG-13 is available at Aetrix Electronics and suitable for USB 2.0 host ports, hot-pluggable docking stations, and set-top box peripheral interfaces requiring stable component supply, long-term lifecycle support, and green-compliant packaging.
Supply support for AP2181MPG-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 consumer, computing, and industrial markets.
The AP2181/AP2191 family targets USB 2.0-compliant hot-swap power distribution, delivering integrated current limiting, thermal safety, and fault reporting in compact surface-mount packages for space- and reliability-critical applications.
FAQ
What is the maximum continuous load current supported by AP2181MPG-13?
The AP2181MPG-13 is rated for 1.5A maximum continuous load current under recommended operating conditions (−40°C to +85°C ambient). This rating accounts for thermal limits in the U-DFN2018-6 package and ensures reliable operation without derating when PCB thermal vias are implemented per datasheet layout guidelines.
Does AP2181MPG-13 require external components for over-current protection?
No. The AP2181MPG-13 integrates all over-current protection functions: current-sense FET, 2.1A trip threshold, 7ms FLG deglitch, and thermal shutdown at +140°C. Only a 0.01–0.1µF ceramic capacitor between IN and GND is required for stability - no sense resistors, timers, or external pull-ups are needed.
Can AP2181MPG-13 be used in USB 3.0 applications?
The AP2181MPG-13 is specified and qualified for USB 2.0 compliance only. While its electrical characteristics (e.g., 0.6ms rise time, 1.5A rating) may function in some USB 3.0 downstream ports, it lacks official USB 3.0 VBUS timing certification and is not recommended for SuperSpeed data line integrity-critical applications.
How does the FLG pin behave during a short-circuit event?
During a short circuit, the FLG pin goes low after a nominal 7ms deglitch period and remains low until both over-current and over-temperature conditions are cleared. If thermal shutdown cycles the device, FLG stays asserted low throughout each on/off cycle and releases only after the fault is removed and junction temperature falls below the hysteresis threshold.
AP2181MPG-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- 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):
- 1.5A
- Rds On (Typ):
- 95mOhm
- Input Type:
- Non-Inverting
- Features:
- Slew Rate Controlled, 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-MSOP-EP
AP2181MPG-13 FAQ
1.How can I place an order for AP2181MPG-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2181MPG-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 AP2181MPG-13 reliable?
The price and inventory of AP2181MPG-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2181MPG-13 is usually 5 days.
3.What payment methods are accepted for AP2181MPG-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2181MPG-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2181MPG-13?
AP2181MPG-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2181MPG-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 AP2181MPG-13?
For technical support, including AP2181MPG-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2181MPG-13 requirements.
6.How does Aetrix verify that AP2181MPG-13 is sourced from the original manufacturer or authorized distributors?
All AP2181MPG-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 AP2181MPG-13 meets industry standards.
7.What is the process for return or replacement of AP2181MPG-13?
All AP2181MPG-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP2181MPG-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 AP2181MPG-13 part is unused and in its original packaging.
Return procedure for AP2181MPG-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP2181MPG-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
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
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…
