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Diodes Incorporated AL5809-120QP1-7
- Part No.:
- AL5809-120QP1-7
- Manufacturer:
- Diodes Incorporated
- Category:
- LED Drivers
- Package:
- POWERDI®123
- Datasheet:
-
AL5809-120QP1-7.pdf
- Description:
- IC LED DRVR LIN PWM 120MA PDI123
- Quantity:
- Payment:
- Shipping:
Inventory:2,950
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Product details
Overview
AL5809-120QP1-7 from Diodes Incorporated is an AEC-Q100 Grade 3 qualified, two-terminal constant current linear LED driver in PowerDI123 (Type B) package, delivering 120mA ±5% output current with 20ppm/°C temperature stability, 2.5V–60V input voltage range, and thermal shutdown at +165°C - designed for high-side or low-side LED string control in automotive interior lamps and instrumentation illumination.
For engineers reviewing the AL5809-120QP1-7 datasheet, AL5809-120QP1-7 pinout, AL5809-120QP1-7 application, or AL5809-120QP1-7 equivalent, key selection considerations include its fixed 120mA output, 60V max VIN–VOUT rating, ±5% current accuracy over –40°C to +150°C, thermal shutdown hysteresis of +30°C, and compatibility with PWM dimming down to 500µs pulse width.
Technical Context
The AL5809-120QP1-7 implements a precision current mirror-based regulation architecture with an internal fixed reference resistor, enabling stable 120mA output without external components. Its low-dropout internal LDO powers the control block, and startup occurs at ~1.5V across terminals.
It supports bidirectional placement: as a high-side regulator (LED anode to OUT), or low-side regulator (LED cathode to IN), with current flow direction determined solely by external LED string polarity - no control pins or enable logic required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 120mA ±5% at +25°C; 108–132mA over –40°C to +150°C - ensures consistent LED brightness across automotive ambient extremes. |
| Input Voltage Range | 2.5V to 60V between IN and OUT - supports direct connection to 12V/24V automotive systems with transient immunity up to 80V absolute max. |
| Temperature Stability | 20ppm/°C - limits current drift to <±0.3% over full junction range, critical for color-stable lighting in instrument clusters. |
| Thermal Shutdown | Activates at +165°C with +30°C hysteresis - prevents thermal runaway during sustained overvoltage or poor PCB heatsinking. |
| ESD Protection | HBM: 4kV, MM: 400V, CDM: 1kV - meets automotive handling robustness requirements without additional protection circuitry. |
| Power Dissipation | 1.5W max in PowerDI123 (Type B) on 50.8mm × 50.8mm GETEK PCB - enables 120mA drive at ΔV = 12.5V (e.g., 13.5V supply − 1V LED chain). |
| PWM Dimming Support | Min on/off pulse width: 500µs - compatible with standard 100–200Hz automotive PWM dimming without flicker or dropout. |
Pinout & Package
Package: PowerDI123 (Type B), surface-mount, thermally enhanced with exposed cathode pad (OUT pin connected to die attach paddle). Dimensions: 3.70 × 2.80 × 1.78 mm (L × W × H), JEDEC-compliant footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 1) | Current Input Terminal | Current flows *into* this pin; connects to LED cathode in low-side configuration or system supply in high-side configuration. |
| OUT (Pin 2) | Current Output Terminal | Current flows *out of* this pin; connects to LED anode in low-side configuration or LED cathode in high-side configuration - also tied to thermal pad for heatsinking. |
Key Features
| Feature | Design Value |
|---|---|
| Two-terminal simplicity | Eliminates external current-setting resistors and control logic - reduces BOM count and layout area in space-constrained automotive modules. |
| AEC-Q100 Grade 3 qualification | Validated for –40°C to +85°C ambient operation with full PPAP support - meets Tier-1 requirements for parking lights and interior lighting. |
| 60V operating voltage rating | Withstands load-dump transients up to 60V without derating - avoids need for upstream TVS clamping in 12V vehicle architectures. |
| Thermally robust packaging | θJA = 81.4°C/W on 50.8mm × 50.8mm GETEK PCB - enables 120mA continuous operation at +85°C ambient with standard FR-4 layout enhancements. |
| Lead-free & halogen-free | RoHS 2 compliant (<900ppm Br/Cl, <1000ppm Sb) - satisfies EU ELV and OEM green material declarations without performance trade-offs. |
Applications
| Automotive Interior Lamps | Automotive Parking Lights |
|---|---|
|
Use Scenario: Illumination of door courtesy lights, map lights, and footwell lighting in passenger cabins. IC Role / Device Role / Timing Role: Constant-current source regulating 120mA through parallel white LED strings (e.g., 3× 40mA paths). Use Value: Maintains uniform luminance across –40°C cold cranking to +85°C under-hood radiant heat, eliminating visible brightness shift. |
Use Scenario: Steady-state operation of rear parking lamp LEDs in 12V vehicle electrical systems. IC Role / Device Role / Timing Role: High-side LED driver with IN connected to battery and OUT to LED cathodes, enabling ground-referenced LED PCB layout. Use Value: Withstands 60V transients during alternator load dump without latch-up or degradation - extends field life beyond 15-year automotive warranty. |
| Instrumentation Illumination | Center Console Backlighting |
|
Use Scenario: Analog gauge pointer backlighting and digital display edge lighting requiring precise current matching. IC Role / Device Role / Timing Role: Low-side driver (LED anode to VCC, cathode to IN) delivering 120mA with <±0.3% drift over temperature. Use Value: Ensures identical LED chromaticity across multi-zone instrument clusters - critical for OEM color calibration compliance. |
Use Scenario: Uniform backlighting of capacitive touch buttons and rotary encoders in center stack assemblies. IC Role / Device Role / Timing Role: Parallel-configured AL5809-120QP1-7 devices driving segmented LED arrays with shared PWM dimming signal. Use Value: Enables synchronized 5–95% duty-cycle dimming across all zones using single MCU GPIO, reducing firmware complexity. |
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 ±5% output, same package and thermal specs - lower power dissipation (1.25W max), reduced thermal stress at same ambient. | Lower brightness output; suitable where 120mA exceeds optical flux requirement or heatsinking is constrained. | Select when system-level thermal margin is <15°C or LED forward voltage exceeds 3.2V per string - reduces risk of thermal shutdown. |
| AL5809-150QP1-7 | 150mA ±5% output, same AEC-Q100 Grade 3 qualification - higher power dissipation (1.8W max), requires larger copper area. | Higher luminance capability; used where >120mA needed for long LED chains or high-brightness indicators. | Select only with verified θJA ≤70°C/W layout (e.g., 2oz copper + 6 thermal vias); not recommended for compact PCBs without thermal simulation. |
Compared with AL5809-100QP1-7, the -120QP1-7 delivers 20% higher regulated current without changing footprint or control interface; versus AL5809-150QP1-7, it reduces thermal design burden by 20% while maintaining sufficient headroom for 3–4 white LEDs in series at 13.5V supply.
Availability
AL5809-120QP1-7 is available at Aetrix Electronics and suitable for automotive interior lamps, parking lights, instrumentation illumination, and center console backlighting requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for AL5809-120QP1-7 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 solutions for automotive, industrial, and consumer markets with ISO/TS 16949 certification.
The AL5809Q product line delivers AEC-Q100-qualified, two-terminal constant current regulators optimized for cost-sensitive, space-constrained automotive LED lighting - eliminating external components while meeting stringent thermal and transient robustness requirements.
FAQ
What is the minimum voltage required to activate the AL5809-120QP1-7?
The device turns on when voltage across IN and OUT reaches approximately 1.5V, with a guaranteed startup range of 1.0V to 2.0V over –40°C to +150°C junction temperature. This allows reliable operation even during low-battery conditions (e.g., 9V cranking), provided the LED string forward voltage plus 2.5V minimum operating headroom is met.
Can AL5809-120QP1-7 be used in parallel to increase total LED current?
Yes - multiple AL5809-120QP1-7 units can be paralleled to achieve higher total current, as confirmed in Figure 3 of the datasheet. Each device maintains its own 120mA regulation, so two units deliver ~240mA. Ensure matched PCB thermal layout and use separate input traces to avoid current imbalance due to trace resistance differences.
Does AL5809-120QP1-7 require external capacitors or resistors for basic operation?
No - the AL5809-120QP1-7 is a fully self-contained two-terminal device with internal current-setting resistor and regulation circuitry. No external components are needed for constant-current operation. Only optional external MOSFETs are required for PWM dimming, as shown in Figure 6a of the datasheet.
How does thermal shutdown behave during transient overtemperature events?
Thermal shutdown activates at +165°C junction temperature with +30°C hysteresis, meaning recovery occurs at +135°C. During brief transients (e.g., load dump), the device sustains operation if junction temperature remains below +165°C; sustained overload triggers shutdown until die cools to +135°C, preventing permanent damage without requiring system reset.
AL5809-120QP1-7 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:
- 120mA
- Frequency:
- -
- Dimming:
- -
- Applications:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerDI™ 123
AL5809-120QP1-7 FAQ
1.How can I place an order for AL5809-120QP1-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AL5809-120QP1-7 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 AL5809-120QP1-7 reliable?
The price and inventory of AL5809-120QP1-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AL5809-120QP1-7 is usually 5 days.
3.What payment methods are accepted for AL5809-120QP1-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AL5809-120QP1-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AL5809-120QP1-7?
AL5809-120QP1-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AL5809-120QP1-7 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 AL5809-120QP1-7?
For technical support, including AL5809-120QP1-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AL5809-120QP1-7 requirements.
6.How does Aetrix verify that AL5809-120QP1-7 is sourced from the original manufacturer or authorized distributors?
All AL5809-120QP1-7 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 AL5809-120QP1-7 meets industry standards.
7.What is the process for return or replacement of AL5809-120QP1-7?
All AL5809-120QP1-7 units undergo pre-shipment inspection (PSI). If there is an issue with AL5809-120QP1-7, 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 AL5809-120QP1-7 part is unused and in its original packaging.
Return procedure for AL5809-120QP1-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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