Diodes Incorporated AL5819 36V Low Dropout Linear LED Driver

Diodes Incorporated AL5819 36V Low Dropout Linear LED Driver provides excellent temperature stability and adjustable output current handling capability. The AL5819 sets the LED current with standard value resistors, simplifying the design of linear and isolated or non-isolated LED drivers. The device is an optimal solution to deliver a constant current for a single LED string.

The Diodes Inc AL5819 36V Low Dropout Linear LED Driver employs an open drain output that can swing up to 36V, enabling it to drive long LED chains. The R_SET pin is outside the LED current path and regulated accuracy while minimizing the required overheads to regulate the LED current. This results in reduced power dissipation when compared to traditional linear LED drivers.

The AL5819 LED Driver is housed in the SOT26 (Type SM) package.

Features

Up to 36V Vin open-drain output
-40°C to +125°C Temperature range
5kV ESD HBM for V_IN Pin, 2kV ESD HBM for all other pins
No external capacitor is required for normal operation
Support LED dimming through power supply Vin
Support LED dimming through R_SET control
Connect devices in parallel to increase output current

±5% @ 30mA High LED current tolerance
250mV Max @ 60mA Low drop-out voltage on LED pin
High power supply rejection
Low-temperature drift
Thermal fold back
Output current up to 100mA
Totally lead-free and fully RoHS compliant
Halogen and antimony free

Applications

LED strips
LED displays and channel letters
Architectural and landscape lighting

Retail lighting in fridges, freezer cases, and vending machines
Signage and decorative LED lighting

Diodes Incorporated AL5819 36V Low Dropout Linear LED Driver

Features

Applications

Pin Assignments

Typical Application Circuit

Functional Block Diagram

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