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Diodes Incorporated AL8822SP-13
- Part No.:
- AL8822SP-13
- Manufacturer:
- Diodes Incorporated
- Category:
- LED Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
AL8822SP-13.pdf
- Description:
- IC LED DRIVER OFFL 2A 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:7,375
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Product details
Overview
AL8822SP-13 from Diodes Incorporated is a 50V, 2A boost LED driver IC in SO-8EP package, delivering accurate constant current for MR16 and similar LED lamps. It features proprietary hysteretic control, internal 50V NDMOS switch, up to 1MHz switching frequency, and compatibility with leading-edge and trailing-edge dimmers for dimmable lighting systems.
For engineers reviewing the AL8822SP-13 datasheet, AL8822SP-13 pinout, AL8822SP-13 application, or AL8822SP-13 equivalent, key selection criteria include input voltage range (5–36V), high power factor (>0.9), low THD (<30%), thermal shutdown at +160°C, and SO-8EP package with exposed pad for thermal management.
Technical Context
The AL8822SP-13 implements a continuous conduction mode (CCM) boost converter using a hysteretic control architecture with programmable upper/lower current thresholds via RSET and RHYS. Its internal 50V/2A NDMOS switch enables direct integration into compact MR16 lamp designs without external high-voltage FETs.
Control loop stability relies on COMP pin compensation (1µF ceramic capacitor recommended), while FB pin maintains precise 444mV reference for LED current regulation. Input overvoltage protection triggers at 39V VIN and resets at 34V, and VCC regulator delivers stable 5V (±0.5V) for internal circuitry with 10mA sourcing capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 36V - supports wide-range DC input from electronic transformers or rectified AC sources. |
| Switch Rating | 50V VDS, 2A IDS - enables direct drive of LED strings up to ~40V output with margin. |
| FB Reference Voltage | 444mV ±14mV - sets LED current accuracy via external RFB; enables <±3% current tolerance. |
| Switching Frequency | Up to 1MHz - allows use of small inductors (e.g., 10–33µH) for space-constrained MR16 modules. |
| Power Factor & THD | PF > 0.9, THD < 30% - meets EN61000-3-2 Class C requirements for lighting equipment. |
| Thermal Shutdown | +160°C trip, +120°C hysteresis - protects against sustained overtemperature in enclosed lamp housings. |
| UVLO Threshold | 4.2V with 500mV hysteresis - ensures clean startup and prevents brownout oscillation during low-input conditions. |
Pinout & Package
AL8822SP-13 is housed in a thermally enhanced SO-8EP (exposed pad) package with θJA = 66°C/W on standard FR-4 PCB, enabling high-power-density LED driver designs with efficient heat dissipation through the EP pad connected to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SW) | Integrated MOSFET Drain | Connects to inductor and flyback diode anode; carries peak switching current up to 2A. |
| 2 (CS) | Current Sense Input | Monitors inductor valley current via RSET; sets lower hysteresis threshold for CCM operation. |
| 3 (FB) | LED Current Feedback | Compares sensed LED current against 444mV reference; regulates average output current. |
| 4 (COMP) | Loop Compensation Node | Accepts 1µF ceramic capacitor to stabilize hysteretic control loop under varying AC line conditions. |
| 5 (NC) | No Connect | Not internally bonded; must be left floating or tied to GND per layout guidelines. |
| 6 (VIN) | Boost Output Input | Receives boosted LED string voltage; monitored for OVP (39V trip) and UVLO (4.2V start). |
| 7 (VCC) | Internal Regulator Input | Supplies 5V internal rail; requires 4.7µF low-ESR ceramic capacitor close to pin. |
| 8 (NC) | No Connect | Not internally bonded; must be left floating or tied to GND per layout guidelines. |
| 9 (EP) | Exposed Thermal Pad | Must be soldered to large GND copper area with thermal vias; primary path for junction-to-board heat transfer. |
Key Features
| Feature | Design Value |
|---|---|
| Hysteretic CCM Control | Enables stable dimming compatibility with both leading-edge and trailing-edge TRIAC dimmers without external sync circuitry. |
| Integrated 50V/2A NDMOS | Eliminates need for external high-voltage switch; reduces BOM count and PCB footprint in MR16 retrofit lamps. |
| High Power Factor & Low THD | Meets IEC61000-3-2 Class C harmonic limits without active PFC stage, simplifying AC-powered LED driver design. |
| Comprehensive Protection Suite | Includes UVLO, output open detection, OTP (+160°C), and VIN OVP - ensures robust operation in thermally constrained lamp enclosures. |
| SO-8EP Thermal Performance | 66°C/W junction-to-ambient thermal resistance enables 2A continuous operation with minimal heatsinking in compact form factors. |
Applications
| Dimmable MR16 Lamps | Non-Dimmable MR16 Lamps |
|---|---|
Use Scenario: Retrofit replacement for halogen MR16 lamps in residential track lighting with wall-mounted dimmer controls. IC Role / Device Role / Timing Role: Constant-current boost controller regulating 180mA LED string while maintaining compatibility with legacy TRIAC dimmers. Use Value: Delivers flicker-free dimming down to 10% with PF >0.9 and THD <30%, eliminating need for external EMI filters or PFC stages. | Use Scenario: Direct AC/DC conversion for fixed-output LED spotlights in commercial display cabinets. IC Role / Device Role / Timing Role: Primary LED current regulator in transformer-fed 12VAC input systems, operating in CCM for low ripple and high efficiency. Use Value: Achieves >85% system efficiency at full load with integrated 50V/2A switch and 1MHz operation enabling <3mm height inductors. |
| Electronic Transformer-Compatible Lighting | General Illumination LED Modules |
Use Scenario: LED driver board designed to replace magnetic or electronic transformers in existing low-voltage lighting infrastructure. IC Role / Device Role / Timing Role: Boost converter front-end that accepts rectified AC from electronic transformers and delivers regulated LED current. Use Value: Maintains stable operation across 5–36V input range with automatic adaptation to transformer output ripple and dropout events. | Use Scenario: Compact LED module for architectural accent lighting requiring high reliability and thermal resilience. IC Role / Device Role / Timing Role: Primary current source IC with integrated thermal shutdown and output open protection for unattended operation. Use Value: Enables 10-year lifetime rating via junction temperature monitoring, exposed pad thermal path, and robust overvoltage protection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL8862SP-13 | Higher 60V switch rating, 1.5A max output, integrated soft-start, no dimmer compatibility | Targeted at non-dimmable high-voltage LED strings (e.g., 48V industrial signage) | Select when higher output voltage headroom is required and dimmer interface is unnecessary. |
| LM3410XMF/NOPB | 36V switch, 1.25A, current-mode PWM control, no built-in dimmer compatibility or PF/THD optimization | Suitable for DC-input portable LED lighting where transformer compatibility is irrelevant | Choose for battery-powered designs needing tighter current regulation tolerance (±1.5%) but sacrificing AC-line features. |
Compared with AL8862SP-13 and LM3410XMF/NOPB, the AL8822SP-13 uniquely combines MR16-specific dimmer compatibility, high PF/low THD compliance, and integrated 50V/2A switching in SO-8EP-making it the only option qualified for retrofit AC-driven dimmable lamp designs without external PFC or sync components.
Availability
AL8822SP-13 is available at Aetrix Electronics and suitable for dimmable MR16 lamps, electronic transformer-compatible lighting systems, and general illumination LED modules requiring stable component supply, thermal resilience, and regulatory-compliant power quality.
Supply support for AL8822SP-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 high-reliability power management, signal integrity, and lighting solutions for industrial, automotive, and consumer markets.
The AL8822 belongs to Diodes' LED driver product line, engineered specifically for AC-line-powered retrofit LED lamps-prioritizing dimmer compatibility, power factor correction, and thermal robustness in space-limited form factors.
FAQ
What is the maximum recommended LED string voltage supported by AL8822SP-13?
The AL8822SP-13 supports LED string voltages up to 40V, derived from its 50V internal NDMOS switch rating and 39V VIN overvoltage protection threshold. In practice, designs targeting 28–36V LED strings (e.g., 8–10 white LEDs in series) achieve optimal efficiency and thermal performance while maintaining 4–5V headroom for regulation margin and ripple handling.
How does the AL8822SP-13 achieve compatibility with both leading-edge and trailing-edge dimmers?
The AL8822SP-13 achieves dual-dimmer compatibility through its hysteretic CCM control architecture, which inherently tolerates the distorted input waveforms generated by both TRIAC-based leading-edge and MOSFET-based trailing-edge dimmers. Its wide 5–36V input range and fast transient response allow stable current regulation even during deep dimming cycles with high dv/dt and zero-crossing noise.
Can the AL8822SP-13 operate without an external compensation capacitor on the COMP pin?
No-the AL8822SP-13 requires a 1µF ceramic capacitor from COMP to GND for stable loop operation, especially when powered by electronic transformers with high input ripple. Omitting this capacitor causes erratic switching, current overshoot, and potential thermal runaway due to uncontrolled hysteresis band modulation under dynamic line conditions.
What is the role of the exposed pad (EP) in thermal management, and how should it be implemented?
The exposed pad (Pin 9) serves as the primary thermal conduction path from the silicon die to the PCB. It must be soldered to a minimum 3.6mm × 2.7mm GND copper area with ≥4 thermal vias (0.3mm diameter) connecting to an internal or bottom-layer ground plane. This configuration achieves the specified 66°C/W θJA and prevents junction temperatures from exceeding +150°C at 2A continuous load.
AL8822SP-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- AC DC Offline Switcher
- Topology:
- Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 5V
- Voltage - Supply (Max):
- 36V
- Voltage - Output:
- -
- Current - Output / Channel:
- 2A
- Frequency:
- 1MHz
- Dimming:
- -
- Applications:
- -
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO-EP
AL8822SP-13 FAQ
1.How can I place an order for AL8822SP-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AL8822SP-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 AL8822SP-13 reliable?
The price and inventory of AL8822SP-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AL8822SP-13 is usually 5 days.
3.What payment methods are accepted for AL8822SP-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AL8822SP-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AL8822SP-13?
AL8822SP-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AL8822SP-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 AL8822SP-13?
For technical support, including AL8822SP-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AL8822SP-13 requirements.
6.How does Aetrix verify that AL8822SP-13 is sourced from the original manufacturer or authorized distributors?
All AL8822SP-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 AL8822SP-13 meets industry standards.
7.What is the process for return or replacement of AL8822SP-13?
All AL8822SP-13 units undergo pre-shipment inspection (PSI). If there is an issue with AL8822SP-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 AL8822SP-13 part is unused and in its original packaging.
Return procedure for AL8822SP-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AL8822SP-13 Tags
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