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Diodes Incorporated AL9910SP-13
- Part No.:
- AL9910SP-13
- Manufacturer:
- Diodes Incorporated
- Category:
- LED Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
AL9910SP-13.pdf
- Description:
- IC LED DRIVER OFFL PWM 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:21,038
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Product details
Overview
AL9910SP-13 from Diodes Incorporated is a universal high-voltage PWM LED driver-controller designed for offline AC-powered LED lamps. It drives external MOSFETs up to 300kHz, regulates constant LED current via a single sense resistor (typical VCS(HI) = 250 mV), withstands 500V input transients, and supports both linear (LD pin) and PWM (PWM_D pin) dimming - deployed in signage, architectural lighting, and industrial LED retrofit modules.
For engineers reviewing the AL9910SP-13 datasheet, AL9910SP-13 pinout, AL9910SP-13 application, or AL9910SP-13 equivalent, this page delivers verified package mapping (SO-8EP), confirmed thermal performance (θJA = 66°C/W), real-world dimming interface behavior (0–250 mV LD range, 0–100% PWM duty), and validated alternative options for high-voltage LED driver design.
Technical Context
The AL9910SP-13 implements a constant-current buck controller with internal 7.5V LDO (AL9910 variant), UVLO threshold of 6.7V (rising), and programmable oscillator frequency (20–300 kHz via ROSC resistor). Its current-sense comparator uses a fixed 250 mV threshold with ±5% tolerance (AL9910-5 grade), enabling precise LED current regulation across wide input ranges (15–500 VDC).
It features integrated thermal shutdown at +150°C with 50°C hysteresis, gate drive capable of sourcing/sinking 10 mA, and blanking interval of 250 ns to suppress switching noise on CS. The SO-8EP package provides enhanced thermal dissipation (2200 mW PD at 25°C), supporting operation up to +105°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 15 V to 500 V DC - supports universal rectified AC inputs (85–277 VAC) without external pre-regulation. |
| Current-Sense Threshold | 250 mV ±5% - sets nominal LED current via external RSENSE; enables accurate constant-current regulation. |
| Switching Frequency Range | 20 kHz to 300 kHz - set by ROSC resistor; higher frequencies reduce inductor size, lower frequencies improve efficiency. |
| GATE Drive Voltage | 7.5 V (AL9910) - sufficient to fully enhance standard logic-level N-channel MOSFETs in high-side buck configuration. |
| Thermal Shutdown | +150°C with +50°C hysteresis - protects IC during overload or poor heatsinking; automatic recovery after cooldown. |
| Dimming Interfaces | LD pin: 0–250 mV analog control (linear dimming); PWM_D pin: TTL-compatible enable/dim input (0–100% duty cycle). |
| Package Thermal Resistance | θJA = 66°C/W (SO-8EP) - enables 2.2 W power dissipation at +105°C ambient, critical for enclosed LED lamp designs. |
Pinout & Package
AL9910SP-13 is housed in a thermally enhanced SO-8EP (Exposed Pad) package. The exposed pad must be soldered directly to PCB ground plane for optimal thermal performance and EMI reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | High-voltage DC input | Accepts rectified line voltage up to 500 V; powers internal LDO and UVLO circuitry. |
| CS | Current-sense input | Monitors voltage drop across external RSENSE; triggers MOSFET turn-off when ≥250 mV. |
| GND | Power and signal reference | Common return for all internal circuits and exposed pad; must connect to low-impedance ground plane. |
| GATE | MOSFET gate driver output | Drives external N-channel MOSFET gate with 7.5 V swing; 30 ns rise/fall time into 500 pF load. |
| PWM_D | Enable & PWM dimming input | Active-high TTL input; internal 200 kΩ pulldown; disables IC when pulled low (0–1 V). |
| VDD | Internally regulated supply | 7.5 V output from LDO; supplies internal logic and can source ≤1 mA for auxiliary circuitry. |
| LD | Linear dimming control | Analog input (0–250 mV) that scales current-sense threshold; enables smooth brightness adjustment. |
| ROSC | Oscillator timing control | Resistor-to-ground sets switching frequency; connecting to GATE enables constant-off-time (PFM) mode. |
Key Features
| Feature | Design Value |
|---|---|
| Universal AC input support | Operates directly from 85–277 VAC rectified inputs without auxiliary winding or transformer - reduces BOM cost and board space. |
| No startup resistor required | Integrated high-voltage LDO eliminates need for power-wasting startup resistors - improves system efficiency and reliability. |
| Thermally robust SO-8EP package | 66°C/W junction-to-ambient thermal resistance enables +105°C ambient operation - suitable for sealed LED luminaires. |
| Dual dimming architecture | Independent LD (analog) and PWM_D (digital) pins allow hybrid dimming schemes - meets DALI, 0–10 V, and PWM control standards. |
| Open-circuit LED protection | Buck topology inherently prevents destructive overvoltage during LED string open failure - no external crowbar needed. |
Applications
| Architectural LED Wall Washers | Industrial LED High-Bay Retrofit Lamps |
|---|---|
|
Use Scenario: Constant-current LED drivers powering 14–18 high-brightness LEDs in IP66-rated outdoor fixtures operating from 277 VAC mains. IC Role / Device Role / Timing Role: Primary buck controller regulating LED current, setting switching frequency via ROSC, and enabling 0–10 V linear dimming through LD pin. Use Value: SO-8EP thermal performance sustains full output at +105°C ambient; 500 V input rating absorbs lightning-induced transients on commercial building wiring. |
Use Scenario: Retrofit LED tubes replacing fluorescent T8 lamps in factory ceilings, powered from 120/277 VAC with minimal heatsink area. IC Role / Device Role / Timing Role: High-voltage LED driver controlling external MOSFET and inductor; UVLO ensures reliable start-up during brownout conditions. Use Value: 7.5 V gate drive ensures fast MOSFET turn-on; internal LDO removes startup resistor - improving long-term reliability in high-temperature environments. |
| Commercial Signage Backlight Modules | Smart Streetlight LED Drivers |
|
Use Scenario: Thin-profile illuminated channel letters using 10–12 white LEDs per segment, requiring flicker-free dimming and compact layout. IC Role / Device Role / Timing Role: Constant-current controller with dual dimming interface - LD for smooth analog fade, PWM_D for synchronized digital control. Use Value: 250 ns CS blanking eliminates false triggering from switching noise; 30 ns gate rise/fall enables clean PWM dimming down to 100 Hz. |
Use Scenario: Outdoor streetlights with adaptive dimming profiles, powered from 277 VAC and requiring thermal fault resilience in unventilated enclosures. IC Role / Device Role / Timing Role: Core LED current regulator with OTP and hysteresis; ROSC-configurable frequency allows EMI optimization for dense PCB layouts. Use Value: +150°C thermal shutdown with +50°C hysteresis prevents nuisance tripping while ensuring safe thermal margin under sustained overload. |
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 |
|---|---|---|---|
| AL9910A-13 | 10 V gate drive (vs. 7.5 V), 9–11 V VDD range (vs. 7–8 V), 8–10 V UVLO threshold (vs. 6.4–7 V) | Better suited for driving higher-threshold MOSFETs or higher-output-voltage LED strings (>40 V) | Select AL9910A-13 when gate drive headroom or wider VDD operating margin is required. |
| AL9910-5SP-13 | Tighter 5% current-sense tolerance (vs. 6% for AL9910SP-13), same SO-8EP package and thermal specs | Preferred for applications demanding tighter LED current matching across units (e.g., multi-lamp uniformity-critical displays) | Choose AL9910-5SP-13 where binning-sensitive color consistency or photometric uniformity is mandatory. |
Compared with AL9910SP-13, AL9910A-13 offers higher gate drive for less loss with high-VGS(th) MOSFETs, while AL9910-5SP-13 improves current accuracy at no thermal or footprint penalty - enabling targeted selection based on drive strength or regulation precision needs.
Availability
AL9910SP-13 is available at Aetrix Electronics and suitable for architectural lighting, industrial LED retrofits, commercial signage, and smart streetlight systems requiring stable component supply, long-lifecycle availability, and RoHS-compliant manufacturing.
Supply support for AL9910SP-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 ICs, specializing in power management, signal integrity, and LED driver solutions for industrial, automotive, and consumer markets.
The AL9910/A product line was engineered specifically for cost-effective, high-reliability offline LED lighting - delivering universal AC input compatibility, integrated thermal protection, and flexible dimming in compact SO-8/SO-8EP packages.
FAQ
What is the maximum allowable ambient temperature for AL9910SP-13 in SO-8EP package?
The AL9910SP-13 supports operation up to +105°C ambient temperature when mounted on a 51 mm × 51 mm 2 oz copper PCB with thermal vias to ground plane. This rating assumes θJA = 66°C/W and accounts for derating above +25°C at 22 mW/°C. Exceeding this limit risks thermal shutdown activation.
Can AL9910SP-13 drive MOSFETs directly without external gate drivers?
Yes - AL9910SP-13 integrates a 7.5 V gate driver capable of sourcing/sinking 10 mA with 30 ns rise/fall times into 500 pF. It directly drives logic-level N-channel MOSFETs (e.g., DMN3025LSD, Si2302DS) in buck configurations up to 300 kHz, eliminating need for external drivers in most LED lamp designs.
How does the ROSC pin function in constant-off-time (PFM) mode?
In PFM mode, ROSC is connected to the GATE pin instead of ground. This reconfigures the oscillator to define off-time (tOFF) rather than period. The resulting variable-frequency operation maintains stable current regulation under light loads and improves efficiency at partial brightness - critical for occupancy-sensing streetlights.
Is AL9910SP-13 compliant with RoHS and halogen-free requirements?
Yes - AL9910SP-13 is fully RoHS 3 compliant (2015/863/EU), lead-free, and halogen-free ("Green" per Diodes Inc. definition: <900 ppm Br, <900 ppm Cl, <1000 ppm Sb). Certificate of Compliance and material declarations are available upon request from Aetrix Electronics.
AL9910SP-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):
- 15V
- 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
AL9910SP-13 FAQ
1.How can I place an order for AL9910SP-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AL9910SP-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 AL9910SP-13 reliable?
The price and inventory of AL9910SP-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AL9910SP-13 is usually 5 days.
3.What payment methods are accepted for AL9910SP-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AL9910SP-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AL9910SP-13?
AL9910SP-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AL9910SP-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 AL9910SP-13?
For technical support, including AL9910SP-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AL9910SP-13 requirements.
6.How does Aetrix verify that AL9910SP-13 is sourced from the original manufacturer or authorized distributors?
All AL9910SP-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 AL9910SP-13 meets industry standards.
7.What is the process for return or replacement of AL9910SP-13?
All AL9910SP-13 units undergo pre-shipment inspection (PSI). If there is an issue with AL9910SP-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 AL9910SP-13 part is unused and in its original packaging.
Return procedure for AL9910SP-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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