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Diodes Incorporated AL5809-150QP1-7
- Part No.:
- AL5809-150QP1-7
- Manufacturer:
- Diodes Incorporated
- Category:
- LED Drivers
- Package:
- POWERDI®123
- Datasheet:
-
AL5809-150QP1-7.pdf
- Description:
- IC LED DRVR LIN PWM 150MA PDI123
- Quantity:
- Payment:
- Shipping:
Inventory:2,935
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Product details
Overview
AL5809-150QP1-7 from Diodes Incorporated is a two-terminal, AEC-Q100 Grade 3 qualified constant current LED driver delivering 150 mA ±5% accuracy 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 parking lights.
For engineers reviewing the AL5809-150QP1-7 datasheet, AL5809-150QP1-7 pinout, AL5809-150QP1-7 application, or AL5809-150QP1-7 equivalent, key selection criteria include its 150 mA fixed output, PowerDI123 (Type B) thermal performance (θJA = 81.4°C/W on 50.8 mm × 50.8 mm GETEK), thermal shutdown at +165°C, and PWM dimming compatibility with ≥500 µs minimum pulse width.
Technical Context
The AL5809-150QP1-7 integrates an internal precision current mirror and low-dropout regulator to maintain stable 150 mA output without external resistors. Its two-pin architecture eliminates control logic, enabling direct series connection between supply and LED string.
It operates as a constant current regulator (CCR) with startup threshold of 1.5 V and supports PWM dimming via external MOSFET switching at the OUT pin. Thermal shutdown activates at +165°C with +30°C hysteresis, ensuring robust operation under transient overloads in 12 V/24 V automotive systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 150 mA ±5% at +25°C; 135–165 mA over -40°C to +150°C - ensures consistent brightness across automotive ambient extremes |
| Operating Voltage Range | 2.5 V to 60 V across IN–OUT terminals - withstands load dump transients up to 60 V in automotive 12 V/24 V systems |
| Temperature Stability | 20 ppm/°C - limits current drift to <±0.3% over full junction range, critical for color-stable illumination |
| Thermal Shutdown | +165°C activation with +30°C hysteresis - prevents thermal runaway during sustained overvoltage or poor PCB heatsinking |
| Power Dissipation | 1.53 W max on 50.8 mm × 50.8 mm GETEK PCB - enables 150 mA drive at up to 10.2 V differential (e.g., 16 V supply − 5.8 V LED string) |
| PWM Dimming Support | Min. 500 µs ON/OFF pulse width - compatible with standard microcontroller PWM outputs without added timing circuitry |
| AEC-Q100 Qualification | Grade 3 (-40°C to +85°C ambient) - certified for under-hood and cabin lighting applications requiring PPAP documentation |
Pinout & Package
Supplied in thermally robust PowerDI123 (Type B) package (3.70 mm × 2.80 mm × 1.78 mm), featuring exposed cathode pad for enhanced thermal conduction to PCB ground plane.
| 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 |
|---|---|
| No external current-setting resistor required | Fixed 150 mA output trimmed internally - reduces BOM count and layout area vs. adjustable CCRs |
| High-side and low-side LED string support | Two-terminal bidirectional topology - simplifies routing in constrained space such as door modules or instrument clusters |
| Robust transient immunity | 60 V absolute max rating with 80 V surge capability - survives ISO 7637-2 Pulse 5a load dump events |
| Lead-free, halogen-free, antimony-free | Compliant with RoHS 2 and automotive green standards (<900 ppm Br/Cl, <1000 ppm Sb) - meets global Tier 1 material declarations |
| PPAP-capable qualification | AEC-Q100 Grade 3 with full test reports available - satisfies OEM production release requirements without requalification |
Applications
| Automotive Interior Lamps | Automotive Parking Lights |
|---|---|
Use Scenario: Illumination of map lights, dome lights, and courtesy lights in passenger compartments. IC Role / Device Role / Timing Role: Constant current regulator maintaining stable 150 mA through white LED strings despite battery voltage variation (9–16 V). Use Value: Eliminates brightness flicker during engine start-stop cycles and ensures uniform luminance across vehicle lifetime. | Use Scenario: Front/rear position lamp driving in compact headlight/tail light assemblies. IC Role / Device Role / Timing Role: High-side configured CCR supplying 150 mA to red LED arrays with minimal footprint. Use Value: Enables single-device solution for dual-function lamps (parking + DRL) without external sense resistors or controllers. |
| Instrumentation Illumination | Center Console Backlighting |
Use Scenario: Backlighting of analog gauges and digital displays in instrument clusters. IC Role / Device Role / Timing Role: Low-side configured driver powering amber/green LEDs with tight current matching across multiple channels. Use Value: Maintains consistent color point and contrast ratio across display zones under wide temperature swings (-40°C to +85°C ambient). | Use Scenario: Edge-lit backlighting for touch-sensitive HVAC and infotainment controls. IC Role / Device Role / Timing Role: Parallel-connected AL5809-150QP1-7 devices delivering 300+ mA total current with matched regulation. Use Value: Avoids current imbalance issues seen with discrete resistor-based solutions, improving panel uniformity and reducing thermal 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 |
|---|---|---|---|
| AL5809-120QP1-7 | 120 mA fixed output, AEC-Q100 Grade 3, same PowerDI123 (Type B) package | Lowers power dissipation by 20% at same VIN−VLED differential; suitable where thermal margin is constrained | Select when LED forward voltage exceeds 5.5 V at 150 mA, or when board-level heatsinking is limited |
| AL5809-100QP1-7 | 100 mA fixed output, AEC-Q100 Grade 3, identical pinout and thermal specs | Reduces maximum power dissipation by 33%, enabling use on smaller PCBs or lower-cost FR-4 substrates | Choose for cost-sensitive cabin lighting where 100 mA suffices for target luminance and thermal budget allows |
Compared with AL5809-120QP1-7 and AL5809-100QP1-7, the AL5809-150QP1-7 delivers highest current density in the same footprint, enabling fewer devices per LED string or higher-brightness implementations - but requires careful thermal design due to 1.53 W max dissipation.
Availability
AL5809-150QP1-7 is available at Aetrix Electronics and suitable for automotive interior lamps, parking lights, instrumentation illumination, and center console backlighting requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for AL5809-150QP1-7 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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and lighting solutions for automotive, industrial, and consumer markets.
The AL5809Q product line delivers AEC-Q100 qualified two-terminal constant current regulators optimized for automotive LED lighting, emphasizing simplicity, thermal resilience, and compliance with stringent OEM PPAP and material requirements.
FAQ
What is the minimum input voltage required for AL5809-150QP1-7 to regulate current?
The device begins regulating current once the voltage across IN and OUT reaches approximately 1.5 V, with guaranteed operation starting at 2.5 V. Below 2.5 V, output current drops rapidly; above that, it maintains 150 mA ±5% across the full 2.5–60 V range, provided junction temperature remains ≤+150°C.
Can AL5809-150QP1-7 be used in parallel to increase total LED current?
Yes - multiple AL5809-150QP1-7 units can be paralleled to scale current (e.g., two devices deliver ~300 mA). Matched internal current mirrors ensure <±5% unit-to-unit variation. Use separate PCB copper pours per device and avoid shared thermal vias to prevent current hogging due to thermal coupling.
Does AL5809-150QP1-7 support analog dimming?
No - the device lacks analog control input. Dimming is implemented exclusively via PWM switching of the OUT pin using an external MOSFET, with minimum 500 µs pulse width and recommended 100–200 Hz frequency. Analog dimming would require external current-sense feedback and op-amp circuitry not supported by the two-terminal architecture.
How does thermal shutdown behave during transient overloads?
When junction temperature reaches +165°C, the device shuts down current flow completely. After cooling by ≥30°C (to ≤+135°C), it automatically recovers and resumes regulation. This hysteresis prevents oscillation during marginal thermal conditions and protects LEDs from thermal stress during short-duration overvoltage events like load dump.
AL5809-150QP1-7 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:
- 150mA
- Frequency:
- -
- Dimming:
- -
- Applications:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerDI™ 123
AL5809-150QP1-7 FAQ
1.How can I place an order for AL5809-150QP1-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AL5809-150QP1-7 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 AL5809-150QP1-7 reliable?
The price and inventory of AL5809-150QP1-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AL5809-150QP1-7 is usually 5 days.
3.What payment methods are accepted for AL5809-150QP1-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AL5809-150QP1-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AL5809-150QP1-7?
AL5809-150QP1-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AL5809-150QP1-7 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 AL5809-150QP1-7?
For technical support, including AL5809-150QP1-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AL5809-150QP1-7 requirements.
6.How does Aetrix verify that AL5809-150QP1-7 is sourced from the original manufacturer or authorized distributors?
All AL5809-150QP1-7 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 AL5809-150QP1-7 meets industry standards.
7.What is the process for return or replacement of AL5809-150QP1-7?
All AL5809-150QP1-7 units undergo pre-shipment inspection (PSI). If there is an issue with AL5809-150QP1-7, 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 AL5809-150QP1-7 part is unused and in its original packaging.
Return procedure for AL5809-150QP1-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AL5809-150QP1-7 Tags
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