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Diodes Incorporated AP2281-1WG-7
- Part No.:
- AP2281-1WG-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SOT-23-6
- Datasheet:
-
AP2281-1WG-7.pdf
- Description:
- IC PWR SWITCH P-CHAN 1:1 SOT26
- Quantity:
- Payment:
- Shipping:
Inventory:2,604
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Product details
Overview
AP2281-1WG-7 from Diodes Incorporated is a single-channel, slew-rate-controlled high-side load switch built around a P-channel MOSFET. It operates from 1.5V to 6V input, delivers ≤2A continuous load current, features 80mΩ typical RDS(ON) at 5V, and provides 1ms controlled turn-on rise time. It is used in portable electronics for sequenced power rail enablement with inrush current limiting.
For engineers reviewing the AP2281-1WG-7 datasheet, AP2281-1WG-7 pinout, AP2281-1WG-7 application, or AP2281-1WG-7 equivalent, key selection criteria include input voltage range (1.5–6V), slew-controlled turn-on (1ms), ultra-low quiescent current (0.01µA), thermal performance in SOT26, and absence of integrated discharge FET.
Technical Context
The AP2281-1WG-7 integrates an internal slew-rate control circuit that limits dV/dt at the output during turn-on, preventing supply rail collapse and reducing EMI. Its P-MOSFET architecture places the source at VIN and drain at VOUT, enabling high-side switching without level-shifting.
It uses active-high enable logic with defined VIH/VIL thresholds dependent on VIN, supports operation across –40°C to +85°C ambient, and relies on external 1µF IN and 0.1µF OUT bypass capacitors for stability-no internal charge pump or regulation circuitry is present.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.5V to 6.0V - supports 1.8V, 2.5V, 3.3V, and 5V system rails without external biasing. |
| RDS(ON) (typ @ 5V) | 80mΩ - enables ≤2A load current with <160mV conduction drop, minimizing power loss and self-heating. |
| Turn-on Rise Time | 1000µs (1ms) - limits inrush di/dt to protect upstream regulators and reduce EMI in noise-sensitive applications. |
| Quiescent Current | 0.01µA - allows battery-powered devices to maintain >10-year shelf life when disabled. |
| Enable Logic | Active-high, VIH = 1.4V min (VIN ≥1.5V) - compatible with standard GPIOs without level translation. |
| Thermal Resistance θJA | 153°C/W (SOT26) - requires minimum PCB copper area (per AP02001 layout) to sustain 2A at TA ≤76°C. |
| ESD Rating (HBM) | 5kV - provides robust handling margin for assembly and end-user environments. |
Pinout & Package
AP2281-1WG-7 is packaged in a 6-pin SOT26 (also known as SOT-26 or TSOT-26) surface-mount package with exposed thermal pad (Pin 7). The package measures 2.8mm × 2.9mm × 0.95mm and requires soldering to a dedicated ground plane via the thermal pad for thermal compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pins 4,6) | P-channel MOSFET source connection | Dual-source pins reduce trace inductance and improve current sharing; must be bypassed with 1µF ceramic capacitor to GND. |
| OUT (Pin 1) | P-channel MOSFET drain connection | Single-output node supplying load; requires 0.1µF ceramic capacitor to GND for transient stability. |
| GND (Pins 2,5) | Power and signal reference ground | Dual ground pins lower impedance return path; must connect directly to PCB ground plane. |
| EN (Pin 3) | Active-high enable control input | CMOS-compatible logic input; no internal pull-up; must be driven explicitly to avoid floating state. |
| Thermal Pad (Pin 7) | Junction-to-PCB thermal conduction path | Not electrically connected; must be soldered to solid ground plane with ≥3 vias for θJA = 153°C/W compliance. |
Key Features
| Feature | Design Value |
|---|---|
| Slew-rate controlled turn-on | Fixed 1ms rise time eliminates need for external RC timing network while guaranteeing predictable inrush behavior. |
| Ultra-low shutdown current | 0.01µA max IQ ensures minimal battery drain in always-off states-critical for IoT sensors and wearables. |
| Wide input voltage support | 1.5V–6V operation covers Li-ion, NiMH, USB, and multi-rail embedded systems without auxiliary LDOs. |
| Robust thermal design | SOT26 package with exposed thermal pad achieves 1410mW max power dissipation when properly mounted per AP02001. |
| Lead-free & green compliance | RoHS 2 compliant, halogen- and antimony-free (<900ppm Br/Cl, <1000ppm Sb), meeting strict environmental mandates. |
Applications
| Smartphone Power Sequencing | GPS Navigator Rail Enable |
|---|---|
|
Use Scenario: Enabling camera module or RF transceiver only during active use to extend battery runtime. IC Role / Device Role / Timing Role: High-side load switch controlling 3.3V or 5V subsystem power with controlled turn-on to prevent brownout. Use Value: 1ms slew rate avoids triggering PMIC fault protection during hot-plug events; 0.01µA shutdown current preserves standby battery life. |
Use Scenario: Isolating GPS baseband processor power domain during sleep mode in automotive navigation units. IC Role / Device Role / Timing Role: Single-pole, active-high controlled switch managing 1.8V or 2.5V logic rail sequencing. Use Value: 80mΩ RDS(ON) minimizes voltage droop under 1.5A peak load; wide 1.5–6V range accommodates varying battery states. |
| Notebook Subsystem Control | Portable Media Player (PMP) Display Backlight |
|
Use Scenario: Managing power to USB-C port controller or Thunderbolt retimer IC in ultrabooks. IC Role / Device Role / Timing Role: High-side switch providing clean, sequenced 3.3V enable with ESD-hardened I/O. Use Value: 5kV HBM ESD rating protects against handling damage; dual IN/GND pins reduce PCB routing complexity and loop inductance. |
Use Scenario: Switching white LED driver input in MP4 players to eliminate standby leakage through backlight circuitry. IC Role / Device Role / Timing Role: Load switch placed between battery and DC-DC converter input to gate entire backlight subsystem. Use Value: Thermal pad integration enables reliable 2A operation in compact 2.8×2.9mm footprint; RoHS/green compliance meets CE marking requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side load switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPL7407LDR | 7-channel N-MOS low-side driver; requires external high-side configuration; 1.5V–18V input; no slew control. | Designed for driving LEDs/relays-not optimized for rail isolation or inrush limiting. | Select only if multi-channel sinking and wide VIN tolerance outweigh need for integrated slew control and high-side topology. |
| TPS22915BYFPR | Single-channel, 1.3V–5.5V, 1.2A, 65mΩ RDS(ON), 150µs slew (adjustable), no discharge FET. | Lower RDS(ON) and adjustable slew, but limited to 5.5V max and lacks 6V headroom for 5V systems with ripple. | Prefer for space-constrained designs needing <100µs slew and tighter RDS(ON), provided VIN stays ≤5.5V and thermal margin permits. |
Compared with TPL7407LDR and TPS22915BYFPR, AP2281-1WG-7 uniquely combines 6V absolute maximum input, fixed 1ms slew, and SOT26 thermal performance-making it optimal for 5V portable systems requiring deterministic inrush control without layout overhead.
Availability
AP2281-1WG-7 is available at Aetrix Electronics and suitable for smartphone power sequencing, GPS navigator rail enable, and notebook subsystem control requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for AP2281-1WG-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 consumer, industrial, and computing markets.
The AP2281 belongs to Diodes' load switch product line, engineered specifically for portable electronics requiring precise inrush current control, ultra-low quiescent power, and robust thermal performance in miniature packages.
FAQ
What is the maximum continuous load current for AP2281-1WG-7 at 85°C ambient?
At TA = +85°C and VIN = 5V, the device's maximum continuous load current is 1.81A. This limit derives from thermal constraints: with θJA = 153°C/W and TJ(max) = 125°C, the allowable power dissipation drops to 0.26W, yielding IOUT = √(PD/RDS(ON)) ≈ 1.81A using 80mΩ typical RDS(ON).
Does AP2281-1WG-7 include an integrated discharge FET?
No. AP2281-1WG-7 does not integrate a discharge FET. Only the AP2281-3 variant includes a 65–100Ω internal discharge path from OUT to GND upon disable. For AP2281-1WG-7, external discharge circuitry (e.g., resistor or MOSFET) is required if rapid output voltage decay is needed after turn-off.
Can AP2281-1WG-7 operate from a 1.5V input supply?
Yes. AP2281-1WG-7 is fully specified down to 1.5V input, with RDS(ON) rising to 210–280mΩ at 1.5V. VIH remains functional at 1.4V minimum, ensuring reliable enable control even at lowest VIN. Quiescent current stays at 0.01µA, preserving battery life in low-voltage applications.
What PCB layout practices are mandatory for thermal reliability?
The thermal pad (Pin 7) must be soldered to a solid copper ground plane with ≥3 thermal vias (0.3mm diameter, spaced ≤1mm apart). Per AP02001, the SOT26 pad layout requires 3.2mm × 1.6mm copper area, and traces to IN/OUT/GND must be ≥0.5mm wide to minimize resistance and inductance-failure to follow this causes junction temperature exceedance above 76°C at 2A.
AP2281-1WG-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- SOT-23-6
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Type:
- General Purpose
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- P-Channel
- Interface:
- On/Off
- Voltage - Load:
- 1.5V ~ 6V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 2A
- Rds On (Typ):
- 80mOhm
- Input Type:
- Non-Inverting
- Features:
- Load Discharge, Slew Rate Controlled
- Fault Protection:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-26
AP2281-1WG-7 FAQ
1.How can I place an order for AP2281-1WG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2281-1WG-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 AP2281-1WG-7 reliable?
The price and inventory of AP2281-1WG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2281-1WG-7 is usually 5 days.
3.What payment methods are accepted for AP2281-1WG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2281-1WG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2281-1WG-7?
AP2281-1WG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2281-1WG-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 AP2281-1WG-7?
For technical support, including AP2281-1WG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2281-1WG-7 requirements.
6.How does Aetrix verify that AP2281-1WG-7 is sourced from the original manufacturer or authorized distributors?
All AP2281-1WG-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 AP2281-1WG-7 meets industry standards.
7.What is the process for return or replacement of AP2281-1WG-7?
All AP2281-1WG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP2281-1WG-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 AP2281-1WG-7 part is unused and in its original packaging.
Return procedure for AP2281-1WG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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