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Diodes Incorporated AL5809-40QP1-7
- Part No.:
- AL5809-40QP1-7
- Manufacturer:
- Diodes Incorporated
- Category:
- LED Drivers
- Package:
- POWERDI®123
- Datasheet:
-
AL5809-40QP1-7.pdf
- Description:
- IC LED DRVR LIN PWM 40MA PDI123
- Quantity:
- Payment:
- Shipping:
Inventory:4,664
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Product details
Overview
AL5809-40QP1-7 from Diodes Incorporated is a two-terminal, AEC-Q100 Grade 1 qualified constant current linear LED driver delivering 40 mA ±5% over -40°C to +150°C junction temperature, with 2.5 V to 60 V operating voltage range and 20 ppm/°C temperature stability. It supports both high-side and low-side LED string configurations in automotive interior lamps and instrumentation illumination.
For engineers reviewing the AL5809-40QP1-7 datasheet, AL5809-40QP1-7 pinout, AL5809-40QP1-7 application, or AL5809-40QP1-7 equivalent, key selection criteria include its fixed 40 mA output accuracy, PowerDI123 (Type B) thermal performance (1.5 W max dissipation), 60 V transient tolerance, and PWM dimming compatibility with external MOSFET switching.
Technical Context
The AL5809-40QP1-7 integrates an internal precision current mirror and low-dropout regulator to maintain stable 40 mA output without external resistors. Its startup threshold is 1.5 V, and it features thermal shutdown at +165°C with +30°C hysteresis.
It operates as a two-terminal constant current regulator (CCR), functioning identically in high-side or low-side topology by routing current through IN and OUT pins. The device draws power directly from the VIN–VOUT differential, eliminating need for separate bias rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 40 mA ±5% at +25°C; 34.6–45.4 mA across -40°C to +150°C - ensures consistent LED brightness in automotive ambient extremes. |
| Operating Voltage Range | 2.5 V to 60 V between IN and OUT - supports 2–15+ series LEDs from 9 V battery up to 16 V load dump transients. |
| Temperature Stability | 20 ppm/°C - limits current drift to <±0.3% over full junction range, critical for color-stable automotive lighting. |
| Thermal Shutdown | +165°C activation with +30°C hysteresis - prevents latch-up during sustained over-power conditions on PCBs with limited heatsinking. |
| ESD Protection | HBM: 4 kV, MM: 400 V, CDM: 1 kV - meets automotive handling robustness requirements without additional protection circuitry. |
| Package Thermal Resistance | θJA = 81.4°C/W on 50.8 mm × 50.8 mm GETEK PCB - enables 1.53 W continuous dissipation at TA = +85°C for Grade 1 operation. |
Pinout & Package
Supplied in PowerDI123 (Type B) package: 3.7 mm × 2.8 mm × 1.78 mm body, single-row 2-pin SMD with exposed cathode pad for thermal conduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 1) | LED current input terminal | Current flows into this pin; connects to LED cathode in low-side config or LED anode in high-side config. |
| OUT (Pin 2) | LED current output terminal | Current flows out of this pin; connects to LED anode in low-side config or LED cathode in high-side config. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 40 mA output | Eliminates external current-setting resistor, reducing BOM count and layout area in space-constrained automotive modules. |
| AEC-Q100 Grade 1 qualification | Validated for -40°C to +125°C ambient operation - suitable for engine bay–adjacent or dashboard-mounted lighting systems. |
| 60 V absolute max rating | Withstands ISO 7637-2 Pulse 1 (−150 V) and Pulse 3a/b transients when used with appropriate clamping, enabling direct battery connection. |
| PWM dimming support | Compatible with 100–200 Hz square-wave gating of OUT pin via external MOSFET - achieves 5–95% duty cycle dimming without flicker. |
| Lead-free & halogen-free | Meets RoHS 2 (2011/65/EU) and automotive green standards (<900 ppm Br/Cl, <1000 ppm Sb) - supports global vehicle compliance programs. |
Applications
| Automotive Interior Lamps | Instrumentation Illumination |
|---|---|
Use Scenario: Dome lights, map lights, and courtesy lighting in passenger cabins requiring consistent luminance across cold cranking and hot soak conditions. IC Role / Device Role / Timing Role: Two-terminal constant current regulator providing stable 40 mA drive independent of supply rail fluctuations. Use Value: Maintains LED brightness within ±5% over 9–16 V input and −40°C to +85°C ambient - eliminates visible dimming or color shift during vehicle start-stop cycles. |
Use Scenario: Backlighting for analog gauges, digital clusters, and HVAC control panels where uniform LED intensity is critical for readability. IC Role / Device Role / Timing Role: High-side or low-side LED current source enabling flexible PCB routing around display modules. Use Value: 20 ppm/°C stability ensures backlight color point remains unchanged across dashboard temperature gradients, supporting OEM visual quality targets. |
| Automotive Parking Lights | Side Marker Lighting |
Use Scenario: Low-power front/rear parking lamps meeting ECE R7 and SAE J583 photometric requirements with minimal thermal footprint. IC Role / Device Role / Timing Role: Constant current sink regulating 40 mA through 3–5 white LEDs in series. Use Value: 60 V rating allows direct connection to 12 V system without upstream TVS - reduces component count and improves failure-mode resilience. |
Use Scenario: Compact side marker assemblies integrated into door handles or fender liners where board space and thermal mass are severely constrained. IC Role / Device Role / Timing Role: Thermally robust two-pin driver dissipating ≤0.64 W at 16 V input and 3.2 V LED VF (12.8 V drop). Use Value: PowerDI123 (Type B) package delivers 1.53 W capability on standard FR-4 - avoids need for ceramic substrates or copper slugs in cost-sensitive modules. |
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 |
|---|---|---|---|
| AL5809-30QP1-7 | 30 mA ±5% output; lower power dissipation (0.48 W max at 16 V), reduced thermal stress on small PCBs. | Suitable for 2–3 LED strings where lower luminance is acceptable; not compliant for higher-brightness parking lamp zones. | Select when thermal budget is tighter than current requirement - e.g., densely packed multi-function modules with shared heatsinking. |
| AL5809-50QP1-7 | 50 mA ±5% output; higher forward voltage headroom needed (≥2.5 V), increased power dissipation (0.8 W at 16 V). | Required for ECE R7-compliant rear parking lamps with ≥4 LED strings; exceeds brightness specs for interior use. | Choose when luminous flux must meet regulatory minimums under worst-case VF binning and temperature - verified via photometric testing. |
Compared with AL5809-30QP1-7 and AL5809-50QP1-7, the AL5809-40QP1-7 provides optimal balance of thermal margin, optical output, and regulatory compliance for mid-tier automotive lighting - delivering sufficient flux for instrument clusters and side markers while staying within Grade 1 thermal limits on standard PCBs.
Availability
AL5809-40QP1-7 is available at Aetrix Electronics and suitable for automotive interior lamps, instrumentation illumination, parking lights, and side marker lighting requiring stable component supply across production lifecycles.
Supply support for AL5809-40QP1-7 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 broad automotive qualification expertise and TS16949-certified manufacturing.
The AL5809Q series was designed specifically for AEC-Q100-compliant automotive LED lighting, emphasizing two-terminal simplicity, thermal resilience, and transient robustness in space- and cost-constrained modules.
FAQ
What is the minimum input voltage required to activate the AL5809-40QP1-7?
The device turns on when voltage across IN and OUT reaches approximately 1.5 V, with guaranteed operation above 2.5 V. This allows driving two 3.25 V LEDs from a 9 V battery (2.5 V + 6.5 V), making it viable for cold-cranking scenarios where system voltage dips below 10 V.
Can the AL5809-40QP1-7 be used in high-side configuration with common-anode LED arrays?
Yes - connect the LED anode to the OUT pin and cathode to ground (or current return path); the device regulates current flowing from OUT to IN. This configuration simplifies routing in dash-mounted displays where the anode plane is tied to VBAT and cathodes are individually switched.
Does the AL5809-40QP1-7 require external components for basic operation?
No external components are needed for constant-current operation: it functions as a two-terminal device. Only optional components include a parallel capacitor for EMI suppression or an external MOSFET for PWM dimming - no current-setting resistor, bypass cap, or feedback network is required.
How does thermal shutdown behave during transient overloads?
Thermal shutdown activates at +165°C junction temperature with +30°C hysteresis, meaning recovery occurs at +135°C. During short-duration transients (e.g., load dump), the device sustains operation until thermal mass raises junction temperature beyond threshold - then disables output until safe cooling occurs.
AL5809-40QP1-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- POWERDI®123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Linear
- Topology:
- -
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 2.5V
- Voltage - Supply (Max):
- 60V
- Voltage - Output:
- 60V
- Current - Output / Channel:
- 40mA
- Frequency:
- -
- Dimming:
- -
- Applications:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerDI™ 123
AL5809-40QP1-7 FAQ
1.How can I place an order for AL5809-40QP1-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AL5809-40QP1-7 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 AL5809-40QP1-7 reliable?
The price and inventory of AL5809-40QP1-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AL5809-40QP1-7 is usually 5 days.
3.What payment methods are accepted for AL5809-40QP1-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AL5809-40QP1-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AL5809-40QP1-7?
AL5809-40QP1-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AL5809-40QP1-7 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 AL5809-40QP1-7?
For technical support, including AL5809-40QP1-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AL5809-40QP1-7 requirements.
6.How does Aetrix verify that AL5809-40QP1-7 is sourced from the original manufacturer or authorized distributors?
All AL5809-40QP1-7 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 AL5809-40QP1-7 meets industry standards.
7.What is the process for return or replacement of AL5809-40QP1-7?
All AL5809-40QP1-7 units undergo pre-shipment inspection (PSI). If there is an issue with AL5809-40QP1-7, 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 AL5809-40QP1-7 part is unused and in its original packaging.
Return procedure for AL5809-40QP1-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AL5809-40QP1-7 Tags
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BCR430UXTSA2
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BCR420UE6433HTMA1
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BCR420UE6327HTSA1
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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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BCR420UFD-7
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