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Diodes Incorporated AL9910ASP-13
- Part No.:
- AL9910ASP-13
- Manufacturer:
- Diodes Incorporated
- Category:
- LED Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
AL9910ASP-13.pdf
- Description:
- IC LED DRIVER OFFL PWM 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,529
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Product details
Overview
AL9910ASP-13 from Diodes Incorporated is a universal high-voltage PWM LED driver-controller designed for offline AC/DC LED lighting systems operating from rectified 85–277VAC mains (up to 500V DC input). It drives external MOSFETs at up to 300kHz, regulates LED current via a 250mV CS threshold with ±5% tolerance (AL9910A-5 variant), supports both linear (LD pin) and PWM (PWM_D pin) dimming, and features integrated thermal shutdown and 7.5V/10V gate drive-used in high-brightness LED lamps and signage.
For engineers reviewing the AL9910ASP-13 datasheet, AL9910ASP-13 pinout, AL9910ASP-13 application, or AL9910ASP-13 equivalent, this device requires attention to its SO-8EP thermally enhanced package, ROSC-resistor–set switching frequency, VIN-to-GND absolute maximum rating of +520V, and dual-dimming interface compatibility with legacy analog and low-frequency TTL PWM signals.
Technical Context
The AL9910ASP-13 implements a constant-current buck controller architecture with internal 10V LDO regulation (AL9910A variant), enabling direct gate drive of external N-channel MOSFETs without startup resistors. Its current-sense comparator uses a precision 255mV typical threshold (±5% over temperature) referenced to GND, blanked for 250ns to reject switching noise.
Switching frequency is set by an external resistor on ROSC (20–300kHz range), and the device supports both fixed-frequency PWM mode and constant-off-time (PFM) operation when ROSC is connected to the MOSFET gate-enabling stable operation at high duty cycles and improved efficiency under light loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 20V to 500V DC - supports universal rectified AC inputs (85–277VAC) and withstands line transients up to 520V. |
| Current-Sense Threshold | 255mV (typ), ±5% - sets LED string current via external RSENSE; enables accurate constant-current regulation across temperature. |
| Gate Drive Voltage | 10V (nominal) - sufficient to fully enhance standard logic-level and standard-threshold N-MOSFETs in high-efficiency buck topologies. |
| Switching Frequency Range | 20–300kHz - programmable via ROSC resistor; higher frequencies reduce inductor size, lower frequencies improve efficiency and EMI. |
| Thermal Protection | Junction shutdown at +150°C with +50°C hysteresis - prevents latch-up during overload or poor heatsinking in enclosed luminaires. |
| Dimming Interfaces | LD pin: 45–250mV analog linear control; PWM_D pin: 0–100% duty cycle, ≤ several kHz - supports hybrid dimming and soft-start via LD capacitor ramp. |
| Package Thermal Resistance | θJA = 66°C/W (SO-8EP) - enables 2.2W continuous power dissipation at +25°C ambient, critical for high-power LED drivers in compact fixtures. |
Pinout & Package
AL9910ASP-13 is housed in a thermally enhanced SO-8EP (exposed pad) package, with the EP pad electrically and thermally connected to GND for optimal heat transfer to PCB copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | High-voltage DC input supply | Accepts up to 500V DC; powers internal LDO and bias circuitry; must be decoupled near IC with ≥1µF ceramic + bulk electrolytic. |
| CS (Pin 2) | Current-sense input | Monitors voltage across external RSENSE; comparator trips at 255mV to terminate MOSFET conduction; blanked for 250ns. |
| GND (Pin 3) | Signal and power ground reference | Common return for CS, PWM_D, LD, VDD, and EP pad; requires low-impedance connection to minimize noise coupling. |
| GATE (Pin 4) | MOSFET gate driver output | 10V push-pull driver capable of sourcing/sinking 10mA; rise/fall times ≤50ns into 500pF load. |
| PWM_D (Pin 5) | Enable & low-frequency PWM input | Active-high enable; internal 200kΩ pulldown; accepts TTL/CMOS logic; disables gate drive when pulled low. |
| VDD (Pin 6) | Internally regulated supply | 10V LDO output; supplies internal logic and gate driver; can source ≤1mA for auxiliary circuitry (e.g., bias for optocoupler). |
| LD (Pin 7) | Linear dimming control | Analog input (45–250mV) that scales CS threshold downward; enables smooth dimming and soft-start via RC ramp. |
| ROSC (Pin 8) | Oscillator timing control | Resistor-to-GND sets switching frequency; connecting to MOSFET gate enables constant-off-time (PFM) mode for improved light-load efficiency. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 10V LDO regulator | Eliminates high-voltage startup resistor; reduces BOM count and standby power loss; supplies gate driver and external circuitry. |
| 5% current-sense tolerance (AL9910A-5) | Enables ±5% LED current accuracy over temperature without trimming; supports consistent lumen output across production batches. |
| SO-8EP thermally enhanced package | 66°C/W junction-to-ambient thermal resistance allows >2× power handling vs. standard SO-8; essential for high-lumen LED lamps. |
| Dual dimming interface (LD + PWM_D) | Supports analog 0–10V dimming systems and digital PWM control simultaneously; enables flexible integration with DALI, 0–10V, or microcontroller-based lighting controls. |
| Input transient resilience (520V abs max) | Withstands surge events per IEC 61000-4-5 (Level 4); eliminates need for external TVS diodes in many industrial and commercial lighting applications. |
Applications
| LED Street Lighting | Commercial Downlights |
|---|---|
|
Use Scenario: Outdoor 150W LED street lamp powered directly from 277VAC mains with passive PFC. IC Role / Device Role / Timing Role: Constant-current buck controller regulating 700mA LED string; sets switching frequency at 85kHz via 226kΩ ROSC resistor. Use Value: Enables >90% system efficiency and thermal derating margin up to +105°C ambient using SO-8EP package and aluminum-core PCB. |
Use Scenario: Indoor 36W recessed downlight with 12–24V LED module, driven from rectified 120VAC. IC Role / Device Role / Timing Role: Primary-side LED current controller; uses LD pin for 0–10V analog dimming and PWM_D for emergency strobe signaling. Use Value: Eliminates secondary-side feedback components; achieves <±3% current matching across multiple luminaires in multi-fixture installations. |
| Architectural Signage | Industrial High-Bay Lighting |
|
Use Scenario: RGB LED channel letter sign with separate red/green/blue strings, each driven by dedicated AL9910ASP-13. IC Role / Device Role / Timing Role: Independent current regulator per color channel; ROSC pins configured for synchronized 100kHz switching to minimize beat-frequency flicker. Use Value: Ensures consistent color point across wide input voltage range (85–277VAC) and ambient temperatures (−40°C to +105°C). |
Use Scenario: 200W warehouse high-bay fixture operating from 277VAC with thermal management constraints. IC Role / Device Role / Timing Role: High-voltage buck controller driving 1.2A LED string; SO-8EP package mounted on 2oz copper thermal pad with vias to internal ground plane. Use Value: Delivers 2.2W power dissipation capability at +85°C ambient-enabling compact, fanless fixture design compliant with UL 1598. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage LED driver-controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL9910SP-13 | Same SO-8EP package but AL9910 (7.5V gate drive, 250mV CS threshold, ±6% tolerance) | Lower gate drive limits MOSFET selection to logic-level devices; looser current tolerance affects binning-critical applications. | Select when cost sensitivity outweighs gate drive headroom and current accuracy requirements. |
| AL9910A-13 (SO-8) | Identical electrical specs but in standard SO-8 (θJA = 110°C/W), limiting max power to ~630mW | Requires larger heatsink or derating in enclosed fixtures; unsuitable for >100°C ambient or high-power density designs. | Select only for low-power (<30W), open-frame, or space-constrained designs where thermal performance is less critical. |
Compared with AL9910SP-13 and AL9910A-13, the AL9910ASP-13 uniquely combines 10V gate drive, ±5% current sense accuracy, and SO-8EP thermal performance-making it the only choice for high-reliability, high-power, thermally constrained LED drivers requiring long lifetime at elevated ambient temperatures.
Availability
AL9910ASP-13 is available at Aetrix Electronics and suitable for LED street lighting, commercial downlights, and architectural signage requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for AL9910ASP-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-performance power management, signal integrity, and lighting solutions for industrial, automotive, and consumer markets.
The AL9910/A product line delivers universal-input, high-voltage LED driver controllers optimized for cost-sensitive yet thermally demanding offline LED lighting-targeting applications where reliability, efficiency, and simplified bill-of-materials are critical.
FAQ
What is the maximum allowable ambient temperature for AL9910ASP-13 in continuous operation?
The AL9910ASP-13 supports continuous operation up to +105°C ambient temperature when mounted on a properly designed SO-8EP PCB layout (51mm × 51mm, 2oz copper, thermal vias to ground plane). This rating is enabled by its 66°C/W θJA and internal thermal shutdown at +150°C junction temperature, making it suitable for enclosed outdoor luminaires and high-temperature industrial environments.
Can AL9910ASP-13 drive LEDs directly without an external MOSFET?
No. AL9910ASP-13 is a controller IC-not a driver with integrated power switch-and requires an external N-channel MOSFET to handle LED string current. Its GATE pin provides 10V push-pull drive capable of switching MOSFETs with gate charges up to ~20nC at 300kHz; typical implementations use 600V-rated superjunction MOSFETs like DMN6075S or similar.
How does the ROSC pin function in constant-off-time (PFM) mode?
In PFM mode, ROSC is connected to the MOSFET gate instead of GND. This causes the oscillator to measure off-time rather than period, resulting in variable frequency operation where tOFF remains fixed while tON adjusts to maintain constant current. This improves light-load efficiency and eliminates sub-harmonic oscillation at high duty cycles-critical for stable dimming below 10%.
Is AL9910ASP-13 compliant with IEC 61000-3-2 harmonic standards?
AL9910ASP-13 itself is not a complete PFC solution and does not guarantee compliance with IEC 61000-3-2 Class C (lighting equipment). Achieving compliance requires external passive or active PFC circuitry upstream of the VIN pin. The datasheet confirms suitability for non-PFC designs (Figure 3), and designers must add appropriate PFC stages based on total system power and regional regulatory requirements.
AL9910ASP-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-Down (Buck), Step-Up (Boost)
- Internal Switch(s):
- No
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 20V
- Voltage - Supply (Max):
- 500V
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- 25kHz ~ 300kHz
- Dimming:
- Analog, PWM
- Applications:
- Backlight, Lighting, Signage
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO-EP
AL9910ASP-13 FAQ
1.How can I place an order for AL9910ASP-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AL9910ASP-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 AL9910ASP-13 reliable?
The price and inventory of AL9910ASP-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AL9910ASP-13 is usually 5 days.
3.What payment methods are accepted for AL9910ASP-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AL9910ASP-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AL9910ASP-13?
AL9910ASP-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AL9910ASP-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 AL9910ASP-13?
For technical support, including AL9910ASP-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AL9910ASP-13 requirements.
6.How does Aetrix verify that AL9910ASP-13 is sourced from the original manufacturer or authorized distributors?
All AL9910ASP-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 AL9910ASP-13 meets industry standards.
7.What is the process for return or replacement of AL9910ASP-13?
All AL9910ASP-13 units undergo pre-shipment inspection (PSI). If there is an issue with AL9910ASP-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 AL9910ASP-13 part is unused and in its original packaging.
Return procedure for AL9910ASP-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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