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Diodes Incorporated AP1212LSL-13
- Part No.:
- AP1212LSL-13
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AP1212LSL-13.pdf
- Description:
- IC PWR SWITCH N-CHANNEL 1:2 8SOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,384
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Product details
Overview
AP1212LSL-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 1ms soft-start turn-on to suppress inrush-induced voltage droop.
For engineers reviewing the AP1212LSL-13 datasheet, AP1212LSL-13 pinout, AP1212LSL-13 application, or AP1212LSL-13 equivalent, key selection criteria include dual independent switching, open-drain fault flag signaling, UVLO (2.4V typ), thermal shutdown (140°C), and SOP-8L package compatibility with USB 2.0 power delivery requirements.
Technical Context
The AP1212LSL-13 integrates two N-channel MOSFET high-side switches with internal charge pumps, independent current-limiting circuitry (1.25A max), and thermal shutdown with 10°C hysteresis. Each channel operates over 2.7V–5.5V input and supports 3.3V/5V logic-compatible enables.
Its functional architecture includes dual open-drain FLG outputs that assert low on overcurrent, UVLO (<2.3V), or thermal fault; soft-start prevents upstream voltage sag during hot-plug; and output leakage remains ≤10µA when disabled - enabling safe floating of downstream VBUS lines.
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 external level shifting. |
| Continuous Current per Channel | 500mA min - meets USB 2.0 downstream port current specification. |
| RDS(ON) (typ) | 110mΩ at VIN = 5V - ensures <165mV voltage drop at 500mA, satisfying USB voltage-drop compliance. |
| Short-Circuit Current Limit | 1.25A max - provides robust fault protection while staying below UL 25VA safety threshold. |
| Enable Logic Polarity | Active-low (L suffix) - EN1/EN2 asserted low; eliminates need for inverters in microcontroller GPIO-limited designs. |
| UVLO Threshold | 2.4V typ (rising), 2.3V (falling) - prevents erratic switching during brown-out or weak supply conditions. |
| Thermal Shutdown | 140°C trip, 130°C recovery - protects MOSFETs under sustained overload or poor PCB thermal design. |
Pinout & Package
SOP-8L (Small Outline Package, 8-lead, lead-free, green molding compound), 1.27mm pitch, 4.9mm × 3.9mm body, θJA = 165°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN1) | Channel 1 Enable Input | Active-low logic input; must be pulled low to activate OUT1; floating prohibited. |
| 2 (EN2) | Channel 2 Enable Input | Active-low logic input; independent control of OUT2; no cross-talk with EN1. |
| 3 (FLG1) | Channel 1 Fault Flag | Open-drain output; pulled low during overcurrent, UVLO, or thermal shutdown on OUT1. |
| 4 (FLG2) | Channel 2 Fault Flag | Open-drain output; independently signals faults on OUT2; requires external pull-up. |
| 5 (GND) | Power Ground | Common return for internal circuitry and MOSFET sources; must be low-impedance connection. |
| 6 (OUT2) | Channel 2 Switch Output | N-MOSFET source; connects to downstream USB VBUS; supports forced-VOUT > VIN in off-state. |
| 7 (OUT1) | Channel 1 Switch Output | N-MOSFET source; isolated from OUT2; enables independent port power control. |
| 8 (IN) | Supply Input | Drain of both N-MOSFETs and IC power rail; connects to upstream 3.3V/5V source; requires 0.1µF bypass. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent high-side switches | Enables per-port power cycling in USB hubs without shared reset or fault propagation. |
| 1ms soft-start with controlled rise time | Reduces peak inrush current to ~140mA, preventing upstream voltage droop during hot-plug events. |
| Independent open-drain fault flags | Allows microcontroller to isolate fault origin (e.g., short on Port 1 vs. Port 2) without additional sensing circuitry. |
| Output can float above input in off-state | Permits safe back-driving of downstream VBUS (e.g., from battery-charger circuits) without reverse conduction. |
| Thermal shutdown with 10°C hysteresis | Prevents thermal runaway under sustained overload while avoiding oscillation near trip point. |
Applications
| USB Hub Power Management | Hot-Plug USB Peripheral Ports |
|---|---|
Use Scenario: Self-powered USB 2.0 hub distributing regulated 5V to four downstream ports, requiring individual port disable and fault reporting. IC Role / Device Role / Timing Role: Dual high-side switch controlling VBUS delivery to two logical port pairs; FLG pins feed interrupt inputs of hub controller MCU. Use Value: Enables per-port power cycling and real-time overcurrent detection without external current-sense amplifiers or discrete MOSFET drivers. |
Use Scenario: Industrial docking station with USB-A ports supporting hot insertion of test equipment and data loggers. IC Role / Device Role / Timing Role: High-side power gate for each USB port; soft-start prevents brown-out on shared 5V rail during repeated plug/unplug cycles. Use Value: Eliminates need for ferrite beads + bulk capacitance per port by limiting inrush to 140mA and clamping short-circuit current to 1.25A. |
| Battery-Powered USB Host | USB-C Accessory Power Switching |
Use Scenario: Portable medical device with embedded USB host supporting diagnostic peripherals powered from 3.7V Li-ion battery via boost converter. IC Role / Device Role / Timing Role: Dual-channel 5V VBUS switch enabling/disabling power to USB peripherals; UVLO ensures clean startup only above 2.4V battery voltage. Use Value: Low 1μA off-state current preserves battery life; 110mΩ RDS(ON) minimizes conversion loss in battery-to-5V path. |
Use Scenario: USB-C accessory (e.g., multiport adapter) routing VBUS to legacy USB-A ports while complying with USB PD power rules. IC Role / Device Role / Timing Role: Secondary high-side switch after PD controller, providing final port-level enable and fault isolation before USB-A connectors. Use Value: Independent FLG outputs allow PD firmware to distinguish between cable faults and downstream device shorts, improving error logging accuracy. |
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, 2.7V–5.5V, 1.5A current limit, WLCSP-12 package | Requires two devices for dual-port use; smaller footprint but higher assembly cost and no integrated dual-channel coordination. | Select when board space is constrained and per-port thermal management is prioritized over integration. |
| AP2156WM-7 | Dual-channel, 2.7V–5.5V, 1.5A current limit, WLCSP-20, integrated auto-retry on fault | Includes programmable retry delay and latch-off mode; lacks independent FLG pins - single composite fault output. | Select when fault recovery automation is required and independent fault diagnosis is not critical. |
Compared with AP2146WU-7 and AP2156WM-7, the AP1212LSL-13 offers true per-channel fault flagging and SOP-8L manufacturability at lower BOM cost, making it optimal for cost-sensitive, dual-port USB hubs where discrete fault identification is essential.
Availability
AP1212LSL-13 is available at Aetrix Electronics and suitable for USB hub power management, hot-plug peripheral interfaces, and battery-powered USB host systems requiring stable component supply and long-term industrial availability.
Supply support for AP1212LSL-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 industrial, computing, and consumer markets.
The AP1212 series belongs to Diodes' USB power switch product line, engineered specifically to meet USB 2.0 electrical compliance, hot-plug robustness, and thermal reliability requirements in compact hub and peripheral designs.
FAQ
What does the "L" and "S" in AP1212LSL-13 signify?
The first "L" denotes active-low enable logic (EN1/EN2 asserted low); "S" indicates SOP-8L package; the second "L" confirms lead-free finish. The "-13" suffix specifies 2500-unit tape-and-reel packaging. This configuration matches Diodes' standard ordering code for industrial-grade USB power switches.
Can AP1212LSL-13 drive loads beyond 500mA continuously?
No - its rated continuous current is 500mA per channel under recommended operating conditions (TA ≤ 125°C, θJA = 165°C/W). At 600mA, junction temperature exceeds safe limits even with minimal PCB copper; the 1.25A short-circuit limit is transient-only and triggers fault flagging and thermal shutdown if sustained.
Is external pull-up required on FLG1 and FLG2 pins?
Yes - FLG1 and FLG2 are open-drain N-MOSFET outputs and require external pull-up resistors (typically 10kΩ to 5V or 3.3V) to generate valid logic-high levels when no fault is present. Without pull-ups, the flag signals remain indeterminate and cannot interface with standard MCU GPIO interrupt inputs.
Why does AP1212LSL-13 specify "NOT RECOMMENDED FOR NEW DESIGN"?
Diodes recommends AP2146 or AP2156 for new designs due to improved current limit accuracy, enhanced ESD robustness (HBM >2kV), and WLCSP packaging for space-constrained applications. AP1212LSL-13 remains fully supported for legacy production and repair, with no announced discontinuance or last-time-buy date.
AP1212LSL-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
AP1212LSL-13 FAQ
1.How can I place an order for AP1212LSL-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP1212LSL-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 AP1212LSL-13 reliable?
The price and inventory of AP1212LSL-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP1212LSL-13 is usually 5 days.
3.What payment methods are accepted for AP1212LSL-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP1212LSL-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP1212LSL-13?
AP1212LSL-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP1212LSL-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 AP1212LSL-13?
For technical support, including AP1212LSL-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP1212LSL-13 requirements.
6.How does Aetrix verify that AP1212LSL-13 is sourced from the original manufacturer or authorized distributors?
All AP1212LSL-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 AP1212LSL-13 meets industry standards.
7.What is the process for return or replacement of AP1212LSL-13?
All AP1212LSL-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP1212LSL-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 AP1212LSL-13 part is unused and in its original packaging.
Return procedure for AP1212LSL-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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