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Diodes Incorporated AP1212LSG-13
- Part No.:
- AP1212LSG-13
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AP1212LSG-13.pdf
- Description:
- IC PWR SWITCH N-CHANNEL 1:2 8SOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
AP1212LSG-13 from Diodes Incorporated is a dual-channel high-side USB power switch IC with independent enable and fault flag control, designed for bus-powered and self-powered USB hubs and peripheral ports. It delivers 500mA continuous current per channel, features 110mΩ typical RDS(ON), 1.25A short-circuit current limit, and 2.4V UVLO threshold - meeting USB voltage-drop and safety requirements in compact SOP-8L packaging.
For engineers reviewing the AP1212LSG-13 datasheet, AP1212LSG-13 pinout, AP1212LSG-13 application, or AP1212LSG-13 equivalent, key selection criteria include dual independent switching control, open-drain fault flag signaling (over-current/UVLO/thermal shutdown), soft-start turn-on (1ms), and compatibility with 3.3V/5V logic enable inputs in USB-compliant hot-plug power management.
Technical Context
The AP1212LSG-13 integrates two N-channel MOSFET high-side switches with internal charge pumps, independent current-limit circuitry (1.0–1.4A threshold), and thermal shutdown (140°C trip, 130°C hysteresis). Each channel operates with active-high enable (H suffix) or active-low enable (L suffix); this part uses active-low EN1/EN2 per the "L" in AP1212LSG-13.
Its fault detection architecture combines open-drain FLG1/FLG2 outputs that assert low on over-current, input UVLO (<2.3V falling), or thermal shutdown - enabling direct connection to USB host controllers without external logic. The 110μA typical on-state supply current and 1μA off-state leakage support low-power USB suspend modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 5.5V - supports both 3.3V and 5V USB system rails without level-shifting. |
| Continuous Current per Channel | 500mA minimum - meets USB 2.0 downstream port current requirement. |
| RDS(ON) | 110mΩ typical at VIN = 5V - ensures ≤265mV voltage drop at 500mA, satisfying USB spec. |
| Short-Circuit Current Limit | 1.25A maximum - provides robust fault protection while staying below UL 25VA safety limits. |
| Enable Logic Polarity | Active-low (L) - EN1/EN2 asserted low to activate respective switch channel. |
| Fault Flag Type | Open-drain, active-low - allows wired-OR connection to shared interrupt line on USB controller. |
| Soft-Start Time | 1ms turn-on - eliminates inrush-induced upstream voltage droop during hot-plug events. |
Pinout & Package
SOP-8L package (4.9mm × 3.9mm × 1.5mm, 1.27mm pitch), RoHS-compliant, green molding compound, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN1) | Channel 1 Enable Input | Active-low logic input; must be pulled low to enable OUT1; not floatable. |
| 2 (EN2) | Channel 2 Enable Input | Active-low logic input; independent control of OUT2; enables dual-port sequencing. |
| 3 (FLG1) | Channel 1 Fault Flag Output | Open-drain, active-low signal indicating over-current, UVLO, or thermal shutdown on OUT1. |
| 4 (FLG2) | Channel 2 Fault Flag Output | Open-drain, active-low signal indicating fault condition on OUT2; supports shared interrupt bus. |
| 5 (GND) | Power Ground | Common return path for internal circuitry and MOSFET sources; requires low-impedance PCB plane. |
| 6 (OUT2) | Channel 2 Switch Output | N-MOSFET source terminal; connects to downstream USB VBUS load; supports backdrive (VOUT > VIN) in off-state. |
| 7 (OUT1) | Channel 1 Switch Output | N-MOSFET source terminal; independently switched output for first USB port; same backdrive capability. |
| 8 (IN) | Supply Input | Drain of both N-MOSFETs and IC power rail; connects to upstream 2.7–5.5V USB VBUS or DC source. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent high-side switching | Enables per-port power control and sequencing in multi-port USB hubs without cross-talk. |
| Integrated current limiting & thermal shutdown | Prevents MOSFET destruction under sustained overload or ambient temperature rise beyond 140°C. |
| UVLO with 2.4V threshold | Ensures switch remains disabled until input rail stabilizes above valid USB operating range. |
| 1ms soft-start turn-on | Controls dI/dt to avoid violating USB upstream port voltage droop limits during hot-plug. |
| Backdrive-capable outputs | Allows OUTx to exceed IN voltage in off-state - essential for USB OTG and bidirectional power arbitration. |
Applications
| USB Hub Power Management | Bus-Powered Peripheral Port |
|---|---|
|
Use Scenario: Dual-port USB 2.0 hub supplying power to keyboards, mice, and flash drives from a single upstream host port. IC Role / Device Role / Timing Role: High-side power switch managing independent VBUS delivery per downstream port with fault isolation. Use Value: Prevents single-port short from disabling entire hub; 110mΩ RDS(ON) maintains USB voltage compliance across full 500mA load. |
Use Scenario: External USB audio interface drawing power from laptop USB port while supporting hot-plug microphone or headphone attachment. IC Role / Device Role / Timing Role: Hot-plug power sequencer with soft-start and fault flag reporting to host controller. Use Value: 1ms soft-start eliminates audible pop/noise in analog audio paths; open-drain FLG pins enable direct MCU interrupt triggering. |
| Battery Charger Circuit Protection | USB OTG Power Arbitration |
|
Use Scenario: Portable battery-powered device with USB micro-B receptacle acting as both charger input and data port. IC Role / Device Role / Timing Role: Reverse-polarity protected, current-limited VBUS switch isolating charging circuitry from data lines. Use Value: 1.25A short-circuit limit prevents Li-ion battery overcurrent during connector misinsertion; thermal shutdown adds secondary protection layer. |
Use Scenario: Smartphone or tablet implementing USB On-The-Go, dynamically switching between host/peripheral power roles. IC Role / Device Role / Timing Role: Bidirectional VBUS gate enabling controlled power handoff between devices. Use Value: Backdrive-capable outputs allow VOUT to exceed VIN during role swap; independent EN/FLG pins support real-time arbitration logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-side USB power switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP2146WU-7 | Single-channel, 2.7–5.5V, 1.5A current limit, WLCSP-12 package, integrated 100Ω load switch resistor. | Not pin-compatible; requires redesign for dual-port use; optimized for space-constrained mobile USB ports. | Select when board area is critical and only one USB port needs switching; higher current rating suits USB-C PD negotiation paths. |
| AP2156WM-7 | Dual-channel, 2.7–5.5V, 1.5A current limit, WLCSP-20 package, enhanced ESD (±8kV HBM), lower 75mΩ RDS(ON). | Same functional scope but smaller footprint; lacks SOP-8L thermal mass - requires careful layout for 125°C ambient operation. | Select for new designs requiring improved efficiency and ESD robustness; verify thermal performance with 165°C/W θJA derating. |
Compared with AP1212LSG-13, AP2146WU-7 reduces component count for single-port use but sacrifices dual independence, while AP2156WM-7 improves conduction loss and ESD rating at the cost of thermal dissipation margin in legacy SOP layouts.
Availability
AP1212LSG-13 is available at Aetrix Electronics and suitable for USB hub power management, bus-powered peripheral interfaces, and battery-charger circuit protection requiring stable component supply and long-term industrial availability.
Supply support for AP1212LSG-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, industrial, and computing markets.
The AP1212 series belongs to Diodes' USB power switch product line, engineered specifically to meet USB-IF electrical compliance, hot-plug reliability, and thermal safety requirements in compact portable and embedded systems.
FAQ
What does the "L" in AP1212LSG-13 signify?
The "L" denotes active-low enable logic: EN1 and EN2 must be driven low to activate their respective output channels. This matches common USB host controller GPIO configurations where pull-up resistors default the port to off-state. The part is not compatible with active-high enable signals without external inversion.
Can AP1212LSG-13 be used in USB-C applications?
AP1212LSG-13 supports USB 2.0 power delivery only (5V, ≤500mA/port) and lacks USB-C-specific features like CC logic, VCONN switching, or PD communication. It may serve as a secondary VBUS switch in USB-C accessories with legacy USB-A ports, but cannot replace a full USB-C power delivery controller.
How does the open-drain FLG pin interface with a 3.3V microcontroller?
FLG1 and FLG2 are open-drain N-MOS outputs rated for 7V max VFLG. A 10kΩ pull-up to 3.3V is standard; the output pulls low to <0.4V at 10mA, ensuring clean logic-low recognition by 3.3V I/O. No level shifter is required, and multiple FLG pins can share one interrupt line via wired-OR.
Is AP1212LSG-13 still recommended for new designs?
No - Diodes Incorporated explicitly marks AP1212 as "NOT RECOMMENDED FOR NEW DESIGN" and recommends AP2146 or AP2156 instead. These successors offer lower RDS(ON), improved ESD, smaller packages, and extended lifetime support. AP1212LSG-13 remains available for legacy repair and continuity programs only.
AP1212LSG-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:
- 2
- Ratio - Input:Output:
- 1:2
- Output Configuration:
- High Side
- Output Type:
- N-Channel
- Interface:
- On/Off
- Voltage - Load:
- 2.7V ~ 5.5V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 500mA
- Rds On (Typ):
- 110mOhm
- Input Type:
- Non-Inverting
- Features:
- Status Flag
- Fault Protection:
- Current Limiting (Fixed), Over Temperature, UVLO
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOP
AP1212LSG-13 FAQ
1.How can I place an order for AP1212LSG-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1212LSG-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 AP1212LSG-13 reliable?
The price and inventory of AP1212LSG-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1212LSG-13 is usually 5 days.
3.What payment methods are accepted for AP1212LSG-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1212LSG-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1212LSG-13?
AP1212LSG-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1212LSG-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 AP1212LSG-13?
For technical support, including AP1212LSG-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1212LSG-13 requirements.
6.How does Aetrix verify that AP1212LSG-13 is sourced from the original manufacturer or authorized distributors?
All AP1212LSG-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 AP1212LSG-13 meets industry standards.
7.What is the process for return or replacement of AP1212LSG-13?
All AP1212LSG-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1212LSG-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 AP1212LSG-13 part is unused and in its original packaging.
Return procedure for AP1212LSG-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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