My Inquiry
My Account
Diodes Incorporated AP2151WG-7
- Part No.:
- AP2151WG-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP2151WG-7.pdf
- Description:
- IC PWR SWITCH P-CHAN 1:1 SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:83,783
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP2151WG-7 from Diodes Incorporated is a single-channel, active-high enable, 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. Its 0.6ms typical rise time and 7ms deglitch-enabled FLG output support reliable fault reporting in consumer electronics and computing peripherals.
For engineers reviewing the AP2151WG-7 datasheet, AP2151WG-7 pinout, AP2151WG-7 application, or AP2151WG-7 equivalent, key selection criteria include enable polarity (active-high), SO-8/SOT25/MSOP-8EP/U-DFN2018-6 package options, UVLO threshold (1.9V typ), reverse current blocking capability, and thermal shutdown at +140°C with +25°C hysteresis.
Technical Context
The AP2151WG-7 implements a monolithic N-channel MOSFET high-side switch with integrated current-sense FET, thermal sensing circuitry, and UVLO comparator. Its current-limiting function operates via internal sensing without external resistors, clamping output current to 0.8A (typ) under overload while maintaining regulated voltage droop.
It features an open-drain FLG output with 7ms blanking time to suppress false over-current triggers from capacitive inrush, and supports reverse current blocking when disabled - critical for USB VBUS isolation. The device remains fully functional across –40°C to +85°C ambient and shuts down thermally at +140°C with automatic recovery after +25°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Current Limit | 0.8A typical - ensures safe operation under sustained overload without external components |
| RDS(ON) | 95mΩ @ 5V, +25°C - minimizes conduction loss and self-heating in compact SOT25 package |
| Input Voltage Range | 2.7V to 5.5V - compatible with USB 2.0 VBUS and wide-input industrial rails |
| Enable Polarity | Active-high - simplifies direct interface with microcontroller GPIOs without level-shifting |
| FLG Blanking Time | 7ms typical - eliminates false fault reporting during capacitor charging transients |
| UVLO Threshold | 1.9V typical - prevents erratic switching during brown-out or hot-plug insertion |
| Thermal Shutdown | +140°C with +25°C hysteresis - enables self-recovering fault handling in sustained shorts |
Pinout & Package
AP2151WG-7 is supplied in SOT25 (5-pin, 2.9mm × 1.6mm) package with exposed pad for thermal enhancement. Pin 1 = OUT, Pin 2 = FLG, Pin 3 = EN, Pin 4 = GND, Pin 5 = IN. All pins are surface-mount compatible and require GND-connected thermal pad per Diodes' layout guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 5) | Power Input | Primary supply input; must be decoupled with 0.1μF ceramic capacitor near pin |
| EN (Pin 3) | Enable Control | Active-high logic input; drives internal gate driver when ≥2V (VIH min) |
| GND (Pin 4) | Reference Ground | System ground return path; connects to thermal pad for improved θJA |
| FLG (Pin 2) | Fault Indicator | Open-drain output pulled low during over-current or over-temperature events after 7ms blanking |
| OUT (Pin 1) | Switched Output | High-side switched VBUS output; supports reverse current blocking when disabled |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Current Limiting | 0.8A accuracy ±20% - eliminates need for external sense resistor and reduces BOM count |
| Controlled Rise Time | 0.6ms typical - limits inrush current to <500mA during hot-plug, easing system capacitance design |
| Reverse Current Blocking | Enabled when disabled - prevents backfeed from output to input, essential for USB VBUS isolation |
| Low Shutdown Current | 1µA max - preserves battery life in always-on USB peripheral ports |
| ESD Robustness | 4kV HBM, 15kV IEC 61000-4-2 (with external cap) - meets USB system-level ESD requirements |
Applications
| USB 2.0 Downstream Port | Laptop Docking Station |
|---|---|
Use Scenario: Power switching for individual USB Type-A downstream ports on host controllers. IC Role / Device Role / Timing Role: High-side VBUS switch with active-high enable and fault reporting via FLG. Use Value: Enables per-port over-current detection and auto-recovery without host firmware intervention. | Use Scenario: Isolating auxiliary power rails (e.g., USB-C PD sink, HDMI, Ethernet) in modular docking stations. IC Role / Device Role / Timing Role: Hot-plug sequencing controller with controlled 0.6ms rise time and UVLO lockout. Use Value: Prevents system bus disturbance during module insertion/removal and ensures clean power ramp-up. |
| Smartphone Charging Hub | Set-Top Box USB Peripheral Port |
Use Scenario: Managing power delivery to multiple USB peripherals (keyboard, mouse, storage) from a smartphone-based hub. IC Role / Device Role / Timing Role: Single-channel current-limited switch with reverse current blocking to prevent backfeed into phone battery. Use Value: Maintains battery safety and extends cycle life by eliminating reverse leakage paths. | Use Scenario: Providing protected USB host power to external HDDs or streaming dongles in consumer STBs. IC Role / Device Role / Timing Role: Fault-tolerant VBUS switch with thermal shutdown and 7ms FLG deglitch. Use Value: Eliminates field failures caused by shorted cables or faulty peripherals without requiring manual reset. |
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 |
|---|---|---|---|
| AP2141WG-7 | Identical specs except active-low EN pin | Requires inverted control signal; not drop-in for active-high MCU GPIO | Select when host logic uses active-low enable or pull-down default state |
| TPS2051BDBVR | 0.5A limit, 110mΩ RDS(ON), no reverse blocking, 3.3–5.5V range | Lacks reverse current blocking and has higher on-resistance; requires external UVLO | Choose only if reverse blocking is unnecessary and board space allows additional UVLO circuitry |
Compared with AP2141WG-7, the AP2151WG-7 simplifies control interface with active-high EN; compared with TPS2051BDBVR, it adds reverse blocking and tighter current limit accuracy - both critical for USB-compliant VBUS management.
Availability
AP2151WG-7 is available at Aetrix Electronics and suitable for USB 2.0 downstream ports, laptop docking stations, and set-top box peripheral interfaces requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AP2151WG-7 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 family targets USB-compliant hot-swap power distribution, emphasizing integration of current limiting, thermal protection, and fault reporting in small-footprint packages for consumer and computing applications.
FAQ
What is the maximum continuous output current rating for AP2151WG-7?
The AP2151WG-7 is rated for 0.5A maximum continuous load current per its Recommended Operating Conditions table. Although its current-limit threshold is 0.8A (typ), sustained operation above 0.5A risks thermal saturation in the SOT25 package unless PCB thermal design exceeds minimum pad recommendations - especially at ambient temperatures >60°C.
Does AP2151WG-7 support reverse current blocking when disabled?
Yes. When the EN pin is low, the internal MOSFET is fully off and blocks reverse current flow from OUT to IN, with reverse leakage specified at ≤1µA at VIN = 0V and VOUT = 5V. This feature is essential for USB VBUS isolation and prevents backfeed into upstream power sources during cable disconnection or port disable.
How does the 7ms FLG deglitch function prevent false fault reporting?
The FLG output remains inactive for 7ms (typ) after an over-current event begins, allowing transient inrush currents - such as those from 22µF output capacitors - to settle before asserting the fault. This eliminates spurious interrupts during normal hot-plug events and removes the need for external RC filtering, reducing design complexity and component count.
Can AP2151WG-7 be used in dual-purpose ports like USB-C with simultaneous data and charging?
No. Diodes' datasheet explicitly states the AP2151WG-7 is not recommended for dual-purpose ports (e.g., shared HDMI/MHL or USB-C Alternate Mode) where voltage may remain present on the OUT pin while VIN is ramping. This condition can overstress the internal MOSFET due to body diode conduction and uncontrolled gate drive, risking premature failure.
AP2151WG-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- SC-74A, SOT-753
- 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:
- SOT-25
AP2151WG-7 FAQ
1.How can I place an order for AP2151WG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2151WG-7 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 AP2151WG-7 reliable?
The price and inventory of AP2151WG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2151WG-7 is usually 5 days.
3.What payment methods are accepted for AP2151WG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2151WG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2151WG-7?
AP2151WG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2151WG-7 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 AP2151WG-7?
For technical support, including AP2151WG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2151WG-7 requirements.
6.How does Aetrix verify that AP2151WG-7 is sourced from the original manufacturer or authorized distributors?
All AP2151WG-7 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 AP2151WG-7 meets industry standards.
7.What is the process for return or replacement of AP2151WG-7?
All AP2151WG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP2151WG-7, 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 AP2151WG-7 part is unused and in its original packaging.
Return procedure for AP2151WG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP2151WG-7 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…
