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Diodes Incorporated AL5809-120P1-7
- Part No.:
- AL5809-120P1-7
- Manufacturer:
- Diodes Incorporated
- Category:
- LED Drivers
- Package:
- POWERDI®123
- Datasheet:
-
AL5809-120P1-7.pdf
- Description:
- IC LED DRVR LIN PWM 120MA PDI123
- Quantity:
- Payment:
- Shipping:
Inventory:14,864
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Product details
Overview
AL5809-120P1-7 from Diodes Incorporated is a two-terminal linear constant current LED driver in PowerDI123 package, delivering 120mA ±5% regulated output over 2.5V–60V input range and -40°C to +125°C ambient, with 20ppm/°C temperature drift and high-side/low-side LED string compatibility for offline lighting systems.
For engineers reviewing the AL5809-120P1-7 datasheet, AL5809-120P1-7 pinout, AL5809-120P1-7 application, or AL5809-120P1-7 equivalent, key selection criteria include its fixed 120mA current setting, 60V IN-OUT voltage rating, thermal shutdown at +165°C, PWM dimming support via external MOSFET, and PowerDI123 thermal performance (θJA = 148.6°C/W on FR-4).
Technical Context
The AL5809-120P1-7 integrates an internal low-dropout regulator powering a precision current mirror with factory-trimmed reference resistor, enabling stable 120mA output without external components. Its floating ground architecture supports bidirectional placement-IN connected to LED cathode (low-side) or OUT connected to LED anode (high-side).
It features built-in thermal shutdown with +165°C trigger and +30°C hysteresis, minimum 500µs ON/OFF pulse width for PWM dimming (100–200Hz), and 4kV HBM ESD protection. Line regulation is ≤1% across 2.5V–60V VIN-OUT, ensuring consistent current under varying supply conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 120mA ±5% over -40°C to +125°C - ensures precise LED brightness control without calibration. |
| Input Voltage Range | 2.5V to 60V between IN and OUT pins - supports long LED strings in 12V/24V/48V and offline AC-DC applications. |
| Temperature Drift | 20ppm/°C - maintains current stability across wide ambient ranges, critical for outdoor signage and white goods. |
| Thermal Shutdown | +165°C junction temperature with +30°C hysteresis - prevents thermal runaway during overload or poor PCB heatsinking. |
| ESD Protection | 4kV HBM - enables robust handling in manufacturing and field service without additional protection circuitry. |
| Package Thermal Resistance | θJA = 148.6°C/W (FR-4, 25.4mm × 25.4mm) - defines maximum ambient temperature for 120mA operation at 1.2W dissipation limit. |
| PWM Dimming Support | Min. 500µs ON/OFF pulses, 100–200Hz frequency - allows direct integration with microcontroller GPIO for analog-equivalent brightness control. |
Pinout & Package
AL5809-120P1-7 uses the thermally enhanced PowerDI123 (Type B) package: 3.70mm × 2.80mm × 1.78mm body, single-row 2-pin configuration with exposed cathode pad for thermal conduction. Mounting requires 10mm × 10mm 1oz copper pad and thermal vias to inner ground plane per Diodes' recommended layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| In | LED current input terminal | Connected to LED cathode in low-side configuration or system supply rail in high-side configuration; withstands up to +80V transient. |
| Out | LED current output terminal | Connected to LED anode in low-side configuration or LED cathode in high-side configuration; serves as floating reference node for internal regulation. |
Key Features
| Feature | Design Value |
|---|---|
| Two-terminal simplicity | Eliminates external current-setting resistors - reduces BOM count and PCB area in cost-sensitive LED lamps. |
| High-side/low-side flexibility | Same device used in either topology - simplifies inventory and enables shared design across multiple product variants. |
| Robust 60V IN-OUT rating | Withstands peak voltages in rectified AC line applications - enables direct use in non-isolated offline LED drivers. |
| Lead-free & halogen-free | Meets RoHS 2 and Diodes' "Green" standard (<900ppm Br/Cl, <1000ppm Sb) - satisfies global environmental compliance requirements. |
| Thermally optimized package | PowerDI123 delivers 1.24W max power dissipation on GETEK PCB - supports higher current density than SOD-123 alternatives. |
Applications
| Offline LED Lamps | LED Power Supplies |
|---|---|
Use Scenario: Non-isolated AC-DC LED retrofit lamps for E27/E26 sockets operating directly from rectified mains. IC Role / Device Role / Timing Role: Two-terminal constant current regulator placed in series with LED string, acting as high-side current sink. Use Value: Enables compact, resistorless design with 60V rating tolerating 100V+ peak line transients and 20ppm/°C drift maintaining lumen consistency over temperature. |
Use Scenario: Secondary-side constant current stage in isolated flyback or buck-derived LED power supplies. IC Role / Device Role / Timing Role: Low-component-count current stabilizer after bulk DC conversion, replacing discrete transistor/resistor networks. Use Value: Delivers ±5% current accuracy across 2.5V–60V input swing, reducing need for feedback loop compensation and improving batch-to-batch LED brightness uniformity. |
| White Goods Illumination | LED Signs |
Use Scenario: Interior cabin lighting in refrigerators, ovens, and dishwashers requiring wide temperature operation and long life. IC Role / Device Role / Timing Role: Constant current source driving 1–5 white LEDs in series, mounted on small FR-4 PCB inside appliance housing. Use Value: -40°C to +125°C ambient rating and thermal shutdown ensure reliable operation near heat sources; PowerDI123 package withstands thermal cycling stress. |
Use Scenario: Channel letter and architectural signage using long LED strings powered from 24V/48V DC distribution rails. IC Role / Device Role / Timing Role: High-side current regulator enabling common-anode wiring architecture for simplified cabling and centralized power feeding. Use Value: 120mA output drives high-brightness LEDs at full intensity; 60V headroom supports up to 15× 3.2V LEDs in series on 48V bus without derating. |
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 |
|---|---|---|---|
| AL5809-100P1-7 | Fixed 100mA output, same PowerDI123 package and 60V rating | Lowers power dissipation by ~165mW at 60V input vs. 120mA version | Select when LED string forward voltage requires lower current or thermal margin is constrained on small PCBs. |
| AL5809-150P1-7 | Fixed 150mA output, identical thermal specs and pinout | Increases drive capability for higher-lumen LED arrays but raises power dissipation by ~360mW at 60V | Choose for multi-LED modules needing >120mA, provided θJA and ambient allow TJ ≤ +125°C. |
Compared with AL5809-100P1-7 and AL5809-150P1-7, the AL5809-120P1-7 provides optimal balance of drive strength and thermal load for mid-power LED signage and appliance lighting where 120mA matches common 350mA–700mA binning standards.
Availability
AL5809-120P1-7 is available at Aetrix Electronics and suitable for offline LED lamps, white goods illumination, and LED signage requiring stable component supply, RoHS-compliant packaging, and extended temperature operation.
Supply support for AL5809-120P1-7 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 industrial, consumer, and automotive markets.
The AL5809 series belongs to Diodes' LED driver product line, engineered specifically for cost-sensitive, high-volume linear LED applications where simplicity, thermal robustness, and wide input voltage tolerance are critical.
FAQ
What is the minimum input voltage required for AL5809-120P1-7 to regulate properly?
The AL5809-120P1-7 requires a minimum 2.5V differential between IN and OUT pins to initiate regulation. Below this threshold, the device remains off. This enables use with short LED strings (e.g., one 2.8V LED on a 5.3V rail) while maintaining stable 120mA output above the threshold.
Can AL5809-120P1-7 be used in parallel to increase total LED current?
Yes - multiple AL5809-120P1-7 units can be paralleled in either high-side or low-side configuration to scale current (e.g., two devices yield ~240mA). Matched thermal layout is essential to prevent current imbalance; Diodes recommends identical PCB copper area and via count for each device.
Does AL5809-120P1-7 support analog dimming or only PWM?
The AL5809-120P1-7 does not support analog dimming. It is designed exclusively for PWM dimming via external MOSFET switching at the OUT pin, with validated operation from 100Hz to 200Hz and minimum 500µs pulse widths. No internal analog control interface exists.
What is the maximum continuous power dissipation for AL5809-120P1-7 on a standard FR-4 PCB?
On a 25.4mm × 25.4mm FR-4 board with 1oz copper and thermal vias, AL5809-120P1-7 has θJA = 148.6°C/W and maximum rated power dissipation of 0.68W at TA = +25°C. At 120mA and 60V VIN-OUT, power = 7.2W - thus operation must be limited to ≤5.67V VIN-OUT to stay within 0.68W at +25°C ambient.
AL5809-120P1-7 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:
- Signage
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerDI™ 123
AL5809-120P1-7 FAQ
1.How can I place an order for AL5809-120P1-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AL5809-120P1-7 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 AL5809-120P1-7 reliable?
The price and inventory of AL5809-120P1-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AL5809-120P1-7 is usually 5 days.
3.What payment methods are accepted for AL5809-120P1-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AL5809-120P1-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AL5809-120P1-7?
AL5809-120P1-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AL5809-120P1-7 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 AL5809-120P1-7?
For technical support, including AL5809-120P1-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AL5809-120P1-7 requirements.
6.How does Aetrix verify that AL5809-120P1-7 is sourced from the original manufacturer or authorized distributors?
All AL5809-120P1-7 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 AL5809-120P1-7 meets industry standards.
7.What is the process for return or replacement of AL5809-120P1-7?
All AL5809-120P1-7 units undergo pre-shipment inspection (PSI). If there is an issue with AL5809-120P1-7, 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 AL5809-120P1-7 part is unused and in its original packaging.
Return procedure for AL5809-120P1-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AL5809-120P1-7 Tags
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BCR402RE6327HTSA1
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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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