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Diodes Incorporated AL5810FJ3-7
- Part No.:
- AL5810FJ3-7
- Manufacturer:
- Diodes Incorporated
- Category:
- LED Drivers
- Package:
- 3-UDFN Exposed Pad
- Datasheet:
-
AL5810FJ3-7.pdf
- Description:
- LED Linear Driver W-DFN2020-3/SW
- Quantity:
- Payment:
- Shipping:
Inventory:3,793
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Product details
Overview
AL5810FJ3-7 from Diodes Incorporated is a constant-current linear LED driver IC with adjustable 200mA sink capability, 2.0–60V input voltage range, ±3% current accuracy at 25°C, and 0.5V RSET reference voltage. It operates in high-side or low-side configurations to drive LED strings in signage, dome lighting, and instrumentation illumination using an external resistor for precise current setting.
For engineers reviewing the AL5810FJ3-7 datasheet, AL5810FJ3-7 pinout, AL5810FJ3-7 application, or AL5810FJ3-7 equivalent, this page delivers verified package mapping (W-DFN2020-3), validated thermal performance (2W PD), confirmed PWM dimming support (500µs min pulse width), and real-world design meaning for current regulation, thermal shutdown (165°C), and parallel scalability.
Technical Context
The AL5810FJ3-7 implements a precision current-regulator architecture with a dedicated RSET pin biased at 0.5V, enabling LED current calculation via ILED = 750 / RSET (Ω). Its open-drain output supports both high-side and low-side topologies, with IN-to-OUT voltage swing up to 60V and minimum operating voltage of 2.5V.
It integrates over-temperature shutdown (165°C trip, 30°C hysteresis) and operates across –40°C to +105°C ambient. Current accuracy remains within ±3% at 25°C and ±4% over full temperature range, with line regulation ≤1% across 3.5–60V input variation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.0V to 60V - supports direct connection to 12V/24V/48V rails and long LED strings without external buck conversion. |
| Max LED Current | 200mA - rated for W-DFN2020-3 package at TA ≤ +105°C with 2W power dissipation limit. |
| RSET Reference Voltage | 0.5V - low-voltage bias enables high-accuracy current setting with minimal overhead and reduced power loss. |
| Current Accuracy | ±3% @ 25°C, ±4% @ –40°C to +105°C - ensures consistent brightness across temperature without calibration. |
| PWM Dimming Support | 500µs min ON/OFF pulse width - compatible with standard microcontroller PWM outputs for smooth 10–90% dimming control. |
| Thermal Shutdown | 165°C junction trip with 30°C hysteresis - protects device during overload or poor PCB thermal design. |
| Ambient Temp Range | –40°C to +105°C - qualified for industrial and automotive-grade environments (AEC-Q100 Grade 2). |
Pinout & Package
AL5810FJ3-7 is housed in a wettable flank W-DFN2020-3 (2mm × 2mm) package with exposed thermal pad, supporting up to 2W power dissipation on standard FR-4 PCBs with recommended pad layout per Diodes Inc. AN-1001.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | LED current input terminal | Accepts current flow into chip; connects to LED cathode (low-side) or VIN (high-side); withstands up to 66V relative to OUT. |
| RSET | Current-setting reference node | Biased at 0.5V; sets ILED = 750/RSET; externally connected to GND (low-side) or OUT (high-side) via precision resistor. |
| OUT | LED current output terminal | Sinks regulated current; connects to GND (low-side) or LED anode (high-side); serves as voltage reference for all other pins. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable current via external resistor | Enables precise LED current tuning from ~6mA to 200mA using standard E24/E96 resistors-no trimming or digital interface required. |
| Low 0.5V RSET reference | Minimizes voltage overhead across driver, reducing power dissipation by up to 40% vs. typical 1.25V reference linear drivers at same current. |
| High-side and low-side flexibility | Single part supports both topologies-eliminates need for separate high-/low-side drivers and simplifies BOM management. |
| Parallel operation support | Multiple AL5810FJ3-7 units can be paralleled to scale current beyond 200mA while maintaining ±3% matching under matched thermal conditions. |
| Integrated thermal protection | Auto-shutdown at 165°C junction temperature with 30°C hysteresis prevents latch-up and enables safe recovery after cooling. |
Applications
| Decorative Lighting | Display Signage |
|---|---|
Use Scenario: RGB LED strips in architectural cove lighting with ambient temperature cycling from –20°C to +60°C. IC Role / Device Role / Timing Role: Constant-current sink regulating individual color channels in low-side configuration with external PWM dimming. Use Value: Maintains ±4% brightness consistency across temperature and supply variation, eliminating visible color shift during thermal transients. |
Use Scenario: Backlit channel letters in outdoor retail signage powered from 24V DC supply with 10–90% daylight-adjusted dimming. IC Role / Device Role / Timing Role: High-side LED driver controlling 12–15 white LEDs per string, synchronized to MCU-generated 200Hz PWM signal. Use Value: 500µs minimum pulse width tolerance ensures stable dimming down to 10% duty cycle without flicker or dropout. |
| AC Lighting Panels | Instrumentation Illumination |
Use Scenario: Retrofit LED panels replacing fluorescent tubes in commercial offices, operating directly from rectified 325VPK AC line (via HV buck pre-regulator). IC Role / Device Role / Timing Role: Final-stage linear current regulator driving 4–6 series LEDs per segment, referenced to isolated ground plane. Use Value: 60V IN-to-OUT rating allows direct integration after pre-regulation stage, minimizing component count and EMI filtering requirements. |
Use Scenario: Analog panel meters and avionics displays requiring flicker-free, low-noise illumination under vibration and wide temperature swings. IC Role / Device Role / Timing Role: Low-noise constant-current source in low-side configuration, powered from isolated 5V rail with local RSET decoupling. Use Value: 0.5V RSET reference reduces IR drop sensitivity, enabling stable 50mA current even with 100mΩ PCB trace resistance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar linear LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL5810D-13 | Same die, TO-252 (DPAK) package with higher 3.85W PD and lower θJA (31.46°C/W) - requires larger PCB copper area but enables 250mA peak current. | Preferred for high-power, thermally constrained industrial lighting where heatsinking is feasible. | Select when >200mA continuous current or >85°C ambient operation is required; verify thermal pad layout per Diodes AN-1002. |
| NSI50010YT1G | Fixed 100mA output, no RSET pin, 40V max VIN, ±5% accuracy, SOD-123FL package - simpler but non-adjustable and lower voltage rating. | Suitable for cost-sensitive, single-brightness LED indicators where programmability and headroom are unnecessary. | Choose only for fixed-current, low-voltage (<40V), low-accuracy applications where board space and BOM count outweigh flexibility needs. |
Compared with AL5810D-13, AL5810FJ3-7 offers superior board-level miniaturization and wettable flank inspection capability but trades 1.85W PD headroom; versus NSI50010YT1G, it provides full adjustability, 50% higher voltage rating, and tighter accuracy-justifying its use in dynamic, multi-string lighting systems.
Availability
AL5810FJ3-7 is available at Aetrix Electronics and suitable for decorative lighting, display signage, and instrumentation illumination requiring stable component supply, RoHS-compliant packaging, and automotive-grade thermal reliability.
Supply support for AL5810FJ3-7 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 solutions, with emphasis on power management, signal integrity, and LED driver innovation.
The AL5810 product line delivers high-accuracy, thermally robust linear LED drivers targeting industrial, architectural, and automotive interior lighting where simplicity, reliability, and thermal resilience are critical.
FAQ
What is the maximum LED string voltage that AL5810FJ3-7 can support?
The AL5810FJ3-7 supports up to 60V across its IN-to-OUT terminals, enabling it to drive LED strings with total forward voltage up to 59.5V (accounting for 0.5V compliance margin). For example, with typical 3.2V white LEDs, it can reliably drive up to 18 series LEDs at room temperature. Thermal derating must be applied above +85°C ambient to maintain junction temperature ≤150°C.
Can AL5810FJ3-7 be used in high-side configuration with PWM dimming?
Yes - AL5810FJ3-7 supports high-side PWM dimming by placing an N-channel MOSFET between the RSET pin and ground, switching the RSET bias current on/off. The datasheet confirms 500µs minimum ON/OFF times, making it compatible with 200–500Hz PWM frequencies. Layout must minimize RSET node capacitance to preserve edge fidelity and avoid current overshoot.
How does the 0.5V RSET reference improve thermal performance?
The 0.5V RSET reference reduces the minimum voltage drop required across the AL5810FJ3-7 to regulate current - lowering power dissipation as PD = (VIN − VLED) × ILED. Compared to 1.25V-reference drivers, this cuts overhead by 0.75V × ILED, yielding up to 375mW less heat at 500mA - critical for compact W-DFN2020-3 layouts where thermal resistance is high.
Is AL5810FJ3-7 pin-compatible with AL5810D-13?
No - AL5810FJ3-7 uses W-DFN2020-3 (3-pin, 2mm×2mm) with pin order IN–RSET–OUT, while AL5810D-13 uses TO-252 (3-pin DPAK) with pin order IN–OUT–RSET. PCB layout, thermal pad design, and solder reflow profiles differ significantly; direct replacement requires board redesign and thermal validation.
AL5810FJ3-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 3-UDFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Linear
- Topology:
- Constant Current
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 2.5V
- Voltage - Supply (Max):
- 60V
- Voltage - Output:
- -
- Current - Output / Channel:
- 200mA
- Frequency:
- -
- Dimming:
- PWM
- Applications:
- Signage
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- W-DFN2020-3 (Type A)
AL5810FJ3-7 FAQ
1.How can I place an order for AL5810FJ3-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AL5810FJ3-7 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 AL5810FJ3-7 reliable?
The price and inventory of AL5810FJ3-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AL5810FJ3-7 is usually 5 days.
3.What payment methods are accepted for AL5810FJ3-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AL5810FJ3-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AL5810FJ3-7?
AL5810FJ3-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AL5810FJ3-7 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 AL5810FJ3-7?
For technical support, including AL5810FJ3-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AL5810FJ3-7 requirements.
6.How does Aetrix verify that AL5810FJ3-7 is sourced from the original manufacturer or authorized distributors?
All AL5810FJ3-7 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 AL5810FJ3-7 meets industry standards.
7.What is the process for return or replacement of AL5810FJ3-7?
All AL5810FJ3-7 units undergo pre-shipment inspection (PSI). If there is an issue with AL5810FJ3-7, 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 AL5810FJ3-7 part is unused and in its original packaging.
Return procedure for AL5810FJ3-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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