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Diodes Incorporated AL5809-90QP1-7
- Part No.:
- AL5809-90QP1-7
- Manufacturer:
- Diodes Incorporated
- Category:
- LED Drivers
- Package:
- POWERDI®123
- Datasheet:
-
AL5809-90QP1-7.pdf
- Description:
- IC LED DRVR LIN PWM 90MA PDI123
- Quantity:
- Payment:
- Shipping:
Inventory:8,402
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Product details
Overview
AL5809-90QP1-7 from Diodes Incorporated is an AEC-Q100 Grade 3 qualified, two-terminal linear constant current LED driver in PowerDI123 (Type B) package, delivering a fixed 90mA ±5% output with 2.5V–60V operating voltage range and 20ppm/°C temperature stability. It supports both high-side and low-side LED string configurations and withstands 80V transient input for automotive interior lamps and parking lights.
For engineers reviewing the AL5809-90QP1-7 datasheet, AL5809-90QP1-7 pinout, AL5809-90QP1-7 application, or AL5809-90QP1-7 equivalent, key selection factors include its 90mA fixed current accuracy across –40°C to +150°C junction temperature, thermal shutdown at +165°C with +30°C hysteresis, and compatibility with PWM dimming down to 500µs pulse width.
Technical Context
The AL5809-90QP1-7 implements a precision current mirror architecture with an internal fixed reference resistor, enabling stable 90mA regulation without external components. Its low-dropout regulator powers the control block, and startup occurs at ~1.5V across terminals.
Thermal protection activates at +165°C junction temperature with +30°C hysteresis, ensuring safe operation under overcurrent or high ambient conditions. The device operates with ≤1% line regulation over 2.5V–60V input range and maintains ±5% current tolerance from –40°C to +150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 90mA ±5% at +25°C; 81–99mA over –40°C to +150°C junction range |
| Operating Voltage Range | 2.5V to 60V between IN and OUT pins - enables driving ≥2 LEDs from 9V battery or surviving 60V automotive transients |
| Temperature Stability | 20ppm/°C - ensures minimal current drift across automotive temperature extremes |
| Thermal Shutdown | +165°C activation with +30°C hysteresis - prevents permanent damage during overload or poor heatsinking |
| ESD Protection | HBM: 4kV, MM: 400V, CDM: 1kV - meets automotive handling robustness requirements |
| Power Dissipation | 1.5W max in PowerDI123 (Type B) on 50.8mm × 50.8mm GETEK PCB - defines thermal layout constraints for 90mA continuous operation |
| PWM Dimming Support | Min 500µs ON/OFF pulse width - enables direct integration with standard automotive microcontroller PWM outputs |
Pinout & Package
AL5809-90QP1-7 uses the thermally enhanced PowerDI123 (Type B) surface-mount package (3.70 × 2.80 × 1.78 mm), optimized for high-power dissipation in space-constrained automotive PCBs.
| 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 90mA output | Eliminates external current-setting resistor - reduces BOM count and layout area in automotive lighting modules |
| AEC-Q100 Grade 3 qualification | Validated for –40°C to +85°C ambient operation - suitable for under-hood and exterior lamp environments |
| Two-terminal topology | Enables drop-in replacement of discrete current-limiting resistors - simplifies redesign of legacy LED circuits |
| High transient voltage rating | 80V absolute maximum VIN–OUT - withstands load-dump spikes per ISO 7637-2 without external clamping |
| Thermal hysteresis | +30°C recovery gap after +165°C shutdown - prevents thermal oscillation during sustained overload |
Applications
| Automotive Interior Lamps | Automotive Parking Lights |
|---|---|
Use Scenario: Illumination of dashboard backlighting, door courtesy lights, and center console indicators in 12V vehicle platforms. IC Role / Device Role / Timing Role: Constant current regulator providing stable 90mA drive to white or amber LED strings independent of battery voltage variation. Use Value: Maintains consistent luminance across 9–16V supply range while eliminating resistor power loss and thermal derating concerns. |
Use Scenario: Front/rear position lamps meeting ECE R7 and SAE J583 photometric requirements in compact housing designs. IC Role / Device Role / Timing Role: High-side or low-side LED current source enabling flexible PCB routing and simplified thermal management. Use Value: Enables single-device solution for dual-LED arrays (e.g., 2×90mA) via parallel configuration without current mismatch. |
| Instrumentation Illumination | Commercial Vehicle Marker Lights |
Use Scenario: Backlighting of analog gauges and digital displays in heavy-duty truck instrument clusters exposed to wide thermal cycling. IC Role / Device Role / Timing Role: Temperature-stable current source compensating for LED forward voltage drift over –40°C to +85°C ambient. Use Value: Delivers <±5% current accuracy across full temperature range - critical for consistent display contrast and color fidelity. |
Use Scenario: Side marker and clearance lamps on Class 8 trucks where vibration, moisture, and thermal shock demand high-reliability drive. IC Role / Device Role / Timing Role: Robust two-terminal driver rated for 60V continuous operation and 80V transients per ISO 16750-2. Use Value: Eliminates need for TVS diodes or Zener clamps - reduces component count and improves long-term field reliability. |
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 |
|---|---|---|---|
| AL5809-100QP1-7 | 100mA fixed output vs. 90mA; identical package, thermal specs, and AEC-Q100 Grade 3 qualification | Higher current enables fewer parallel strings for same total lumen output - increases power dissipation by 11% | Select when system requires >90mA per channel and thermal margin allows 100mA continuous operation |
| AL5809-60QP1-7 | 60mA fixed output; same architecture and qualification but lower current rating and reduced thermal stress | Better suited for single-LED or low-power indicator applications where 90mA exceeds optical requirements | Choose for cost-sensitive designs with lower brightness targets and tighter thermal constraints |
Compared with AL5809-100QP1-7 and AL5809-60QP1-7, the AL5809-90QP1-7 provides optimal balance of luminous flux, thermal headroom, and PCB area efficiency for mid-power automotive signal lamps requiring precise 90mA drive.
Availability
AL5809-90QP1-7 is available at Aetrix Electronics and suitable for automotive interior lamps, parking lights, and instrumentation illumination requiring stable component supply, AEC-Q100 compliance, and PPAP documentation support.
Supply support for AL5809-90QP1-7 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 ICs, specializing in high-reliability power management, signal integrity, and lighting solutions for automotive and industrial markets.
The AL5809Q product line delivers AEC-Q100-qualified two-terminal constant current drivers for automotive LED lighting, designed to replace resistive current limiting with precision, thermal resilience, and system-level simplification.
FAQ
What is the minimum input voltage required for AL5809-90QP1-7 to begin regulating current?
The AL5809-90QP1-7 turns on after a short delay once the voltage across its IN and OUT terminals reaches approximately 1.5V, with guaranteed operation above 2.5V. This 1.5V threshold enables reliable startup even during cold-cranking events where battery voltage dips to 6–9V, provided the LED string forward voltage remains within operational limits.
Can AL5809-90QP1-7 be used in high-side configuration with common-anode LED arrays?
Yes - the AL5809-90QP1-7 supports high-side driving: connect the LED anode to the OUT pin and cathode to ground or current sink. Its two-terminal architecture functions identically in high-side or low-side mode, maintaining 90mA regulation regardless of orientation, as confirmed by Figures 1 and 2 in the DS38233 datasheet.
How does thermal shutdown behavior affect system reliability in enclosed lamp housings?
The AL5809-90QP1-7 shuts down at +165°C junction temperature and resumes operation only after cooling by +30°C (to +135°C), preventing thermal cycling. In sealed automotive lamps, this hysteresis avoids repeated on/off toggling during transient overheating, preserving LED lifetime and ensuring graceful degradation rather than catastrophic failure.
Is parallel connection of multiple AL5809-90QP1-7 devices supported for higher total current?
Yes - the datasheet explicitly shows parallel configuration (Figure 3) to scale current output. Two AL5809-90QP1-7 devices deliver 180mA with matched current sharing due to inherent process-matched current mirrors. Layout must ensure symmetrical thermal coupling and equal trace impedance to maintain ≤5% current imbalance between units.
AL5809-90QP1-7 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:
- 90mA
- Frequency:
- -
- Dimming:
- -
- Applications:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerDI™ 123
AL5809-90QP1-7 FAQ
1.How can I place an order for AL5809-90QP1-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AL5809-90QP1-7 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 AL5809-90QP1-7 reliable?
The price and inventory of AL5809-90QP1-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AL5809-90QP1-7 is usually 5 days.
3.What payment methods are accepted for AL5809-90QP1-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AL5809-90QP1-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AL5809-90QP1-7?
AL5809-90QP1-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AL5809-90QP1-7 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 AL5809-90QP1-7?
For technical support, including AL5809-90QP1-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AL5809-90QP1-7 requirements.
6.How does Aetrix verify that AL5809-90QP1-7 is sourced from the original manufacturer or authorized distributors?
All AL5809-90QP1-7 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 AL5809-90QP1-7 meets industry standards.
7.What is the process for return or replacement of AL5809-90QP1-7?
All AL5809-90QP1-7 units undergo pre-shipment inspection (PSI). If there is an issue with AL5809-90QP1-7, 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 AL5809-90QP1-7 part is unused and in its original packaging.
Return procedure for AL5809-90QP1-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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