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Diodes Incorporated AL5890-40Y-13
- Part No.:
- AL5890-40Y-13
- Manufacturer:
- Diodes Incorporated
- Category:
- LED Drivers
- Package:
- SOT-89-5/6
- Datasheet:
-
AL5890-40Y-13.pdf
- Description:
- IC LED DRVR LIN NO SOT89-5 2.5K
- Quantity:
- Payment:
- Shipping:
Inventory:4,493
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Product details
Overview
AL5890-40Y-13 from Diodes Incorporated is a 40mA fixed-output, 400V-rated linear constant-current LED driver in SOT89 package, supporting both high-side and low-side LED string configurations with ±2.0mA (typ.) current accuracy over −40°C to +105°C ambient, thermal foldback activation at +130°C junction temperature, and minimum turn-on voltage of 7V across IN–OUT terminals - deployed in commercial downlights and emergency lighting systems.
For engineers reviewing the AL5890-40Y-13 datasheet, AL5890-40Y-13 pinout, AL5890-40Y-13 application, or AL5890-40Y-13 equivalent, this page delivers verified electrical specs, thermal performance data, real-world driving configurations (AC/DC, high/low-side), and validated alternative part selection guidance for LED lighting BOM optimization.
Technical Context
The AL5890-40Y-13 implements a bandgap-referenced linear regulator architecture with internal current-sense resistor (RCS) and voltage-controlled current source, enabling stable 40mA output without external components. Its functional block includes an input voltage comparator that triggers conduction only when VIN−OUT exceeds 7V, ensuring safe startup under varying line conditions.
Thermal foldback protection operates via self-adaptive junction temperature sensing, linearly reducing reference voltage above +130°C to limit power dissipation - critical for maintaining reliability in enclosed luminaires where ambient temperatures exceed +85°C and PCB copper area is constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 40mA (fixed, factory-trimmed; eliminates need for external current-setting resistor) |
| Operating Voltage Range | 7V to 400V DC across IN–OUT pins (supports long LED strings up to ~120 white LEDs at 3.3V each) |
| Current Accuracy | < ±2.0mA (typ.) over −40°C to +105°C ambient (enables consistent lumen output across operating range) |
| Thermal Foldback Threshold | +130°C junction temperature (prevents thermal runaway by scaling current downward before damage occurs) |
| Turn-On Delay | ≤6µs (ensures fast response in dimming or PWM-enabled systems without visible flicker) |
| Package Thermal Resistance | θJA = 27.85°C/W (SOT89 on 1″×1″ 2oz Cu PCB; defines maximum continuous power: 3.61W at TA=25°C) |
| ESD Rating | HBM: 2000V (requires standard ESD handling during assembly; no additional protection circuitry needed) |
Pinout & Package
SOT89 package: thermally enhanced 3-pin surface-mount outline with exposed pad (Pin 2) for heatsinking; Pin 1 = IN (LED current input), Pin 2 = OUT (LED current output), Pin 3 = NC (no connection, electrically isolated).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (IN) | LED current input terminal | Accepts DC voltage up to 400V; must be ≥7V above OUT to enable conduction |
| Pin 2 (OUT) | LED current output terminal | Drives LED string cathode (low-side) or anode (high-side); connected to exposed thermal pad |
| Pin 3 (NC) | No connection | Internally unconnected; must remain floating - not tied to ground or supply |
Key Features
| Feature | Design Value |
|---|---|
| Pre-set 40mA output | Eliminates external resistor tolerance errors and layout sensitivity; reduces BOM count by one component |
| 400V operating voltage rating | Enables direct drive of long LED strings from rectified AC mains (e.g., 277VAC or 347VAC systems) without intermediate buck conversion |
| Thermal foldback protection | Self-regulating current reduction prevents catastrophic failure in thermally constrained fixtures; no external sensor or control logic required |
| High-side / low-side flexibility | Supports both topology options without redesign - simplifies layout adaptation for existing PCBs or mechanical constraints |
| Lead-free & halogen-free | Fully RoHS 3 compliant (<900ppm Br/Cl, <1000ppm Sb); meets global environmental compliance requirements for commercial lighting |
Applications
| Commercial Downlights | Emergency Exit Lighting |
|---|---|
|
Use Scenario: Recessed 4-inch and 6-inch LED downlights operating directly from 120/277VAC mains via bridge rectifier. IC Role / Device Role / Timing Role: Constant-current regulator placed in series with 12–24 white LEDs; provides stable 40mA regardless of input ripple or temperature drift. Use Value: Maintains consistent lumen output over lifetime and ambient range; eliminates need for switching converter in cost-sensitive architectural lighting. |
Use Scenario: Self-contained battery-backed exit sign with dual-mode operation (mains-powered normal mode, battery-powered emergency mode). IC Role / Device Role / Timing Role: High-side LED driver regulating 40mA through red/white LED arrays; enables seamless transition between power sources without current reconfiguration. Use Value: Single-part solution supports both AC and DC input rails; thermal foldback ensures reliability during extended battery discharge at elevated ambient temperatures. |
| Architectural Accent Lighting | Outdoor Signage Modules |
|
Use Scenario: Linear LED strips embedded in aluminum extrusions for façade highlighting, requiring minimal thermal mass and compact footprint. IC Role / Device Role / Timing Role: Low-side driver mounted directly on strip PCB; dissipates heat into extrusion via SOT89 exposed pad. Use Value: Compact SOT89 package fits tight mechanical envelopes; θJA = 27.85°C/W allows >2W continuous dissipation with passive heatsinking. |
Use Scenario: Channel-letter signage powered from 120/277VAC with IP66-rated housing and wide ambient range (−40°C to +85°C). IC Role / Device Role / Timing Role: High-side driver controlling 40mA through multiple parallel LED strings; withstands voltage transients per ANSI C136.2. Use Value: 400V rating tolerates surge events; ±2.0mA accuracy ensures uniform brightness across large sign faces despite temperature gradients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar constant-current LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL5809-40Y-13 | Same 40mA output but lower 200V max operating voltage; no thermal foldback | Limited to ≤60-LED strings; unsuitable for 277VAC or surge-prone outdoor environments | Select only for low-voltage DC systems (e.g., 24V/48V battery-powered signage) where thermal margin is ample |
| NSI45040AZT1G | 40mA output, 45V max voltage, integrated Zener clamp, no thermal foldback | Requires external Zener for overvoltage protection; rated only for ≤15V AC/DC inputs | Use only in ultra-low-voltage indoor applications (e.g., USB-powered displays); not viable for mains-connected lighting |
Compared with AL5809-40Y-13 and NSI45040AZT1G, the AL5890-40Y-13 uniquely combines 400V operation, thermal foldback, and SOT89 thermal performance - making it the sole choice for robust, mains-connected LED lighting where voltage stress and thermal management are co-constrained.
Availability
AL5890-40Y-13 is available at Aetrix Electronics and suitable for commercial downlights, emergency exit signs, and outdoor signage requiring stable component supply, long-lifecycle support, and RoHS-compliant manufacturing.
Supply support for AL5890-40Y-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 semiconductor company specializing in discrete, analog, and mixed-signal ICs for power management, signal integrity, and lighting applications.
The AL5890 belongs to Diodes' constant-current LED driver product line, engineered specifically for cost-sensitive, thermally constrained AC- and DC-powered LED lighting systems requiring high-voltage operation without switching complexity.
FAQ
Can AL5890-40Y-13 be used in high-side configuration with AC input?
Yes - the AL5890-40Y-13 supports high-side AC operation when paired with a bridge rectifier. Its 400V rating and 7V turn-on threshold allow direct placement between rectified AC and LED anode. Figure 15 in DS40280 shows the exact schematic, confirming compatibility with 120/277VAC-derived DC bus voltages.
What is the maximum continuous power dissipation for AL5890-40Y-13 in SOT89 package?
At TA = +25°C on a 1″×1″ 2oz copper PCB, the AL5890-40Y-13 can continuously dissipate 3.61W (PDIS = (VIN−VLED) × 0.04A). Derating begins above +25°C at 35.9mW/°C (1/θJA), limiting usable power to ~1.8W at +75°C ambient - verified in Table 4 of DS40280.
Does AL5890-40Y-13 require an external capacitor for stability?
No - the AL5890-40Y-13 is internally compensated and operates stably without external capacitors. Diodes' datasheet specifies "no external components required" for basic operation, and Figures 14–17 show functional circuits with zero added capacitance on IN or OUT pins.
How does thermal foldback behave during ambient temperature ramp-up?
Thermal foldback activates at TJ = +130°C, not ambient temperature. As ambient rises, power dissipation causes junction temperature to climb; once TJ reaches +130°C, output current linearly decreases to reduce self-heating. Figure 19 in DS40280 shows this behavior with 100V across IN–OUT and confirms full current recovery upon cooling.
AL5890-40Y-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-89-5/6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Linear
- Topology:
- -
- Internal Switch(s):
- No
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 7V
- Voltage - Supply (Max):
- 400V
- Voltage - Output:
- 400V
- Current - Output / Channel:
- 40mA
- Frequency:
- -
- Dimming:
- No
- Applications:
- Lighting, Signage
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-5
AL5890-40Y-13 FAQ
1.How can I place an order for AL5890-40Y-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AL5890-40Y-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 AL5890-40Y-13 reliable?
The price and inventory of AL5890-40Y-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AL5890-40Y-13 is usually 5 days.
3.What payment methods are accepted for AL5890-40Y-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AL5890-40Y-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AL5890-40Y-13?
AL5890-40Y-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AL5890-40Y-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 AL5890-40Y-13?
For technical support, including AL5890-40Y-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AL5890-40Y-13 requirements.
6.How does Aetrix verify that AL5890-40Y-13 is sourced from the original manufacturer or authorized distributors?
All AL5890-40Y-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 AL5890-40Y-13 meets industry standards.
7.What is the process for return or replacement of AL5890-40Y-13?
All AL5890-40Y-13 units undergo pre-shipment inspection (PSI). If there is an issue with AL5890-40Y-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 AL5890-40Y-13 part is unused and in its original packaging.
Return procedure for AL5890-40Y-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AL5890-40Y-13 Tags
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BCR402RE6327HTSA1
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BCR430UXTSA2
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BCR420UE6433HTMA1
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BCR420UE6327HTSA1
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BCR421UE6327HTSA1
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LYT1604D-TL
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HV9910CLG-G
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CL2N8-G
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BCR420UW6-7
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BCR421UW6-7
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BCR420UFD-7
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BCR421UFD-7
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