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AL5809-100P1-7

DIOAL5809-100P1-7

Diodes Incorporated
LED Driver IC 1 Output Linear Dimming 100mA PowerDI™ 123
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Overview

The AL5809-100P1-7 is a constant current linear LED driver designed to simplify the design of LED strips and signage. It integrates a power transistor and a control circuit into a small two-pin PowerDI123 package, effectively acting as a constant current regulator that requires no external components for operation. It supports a wide input voltage range from 2.5V to 60V and provides a fixed output current of 100mA.

Why Choose This Part

The primary benefit is the two-pin simplicity which eliminates the need for external resistors or capacitors, reducing PCB footprint and BOM cost. It features excellent high power supply rejection ratio (PSRR) and low temperature drift, ensuring consistent LED luminosity across an operating range of -40degC to 125degC.

Applications

LED Signage and Displays
Provides uniform brightness across commercial signage and channel letter lighting by maintaining constant current despite voltage drops.
Industrial Indicator Lights
Simplifies driver circuits for status indicators in industrial equipment operating on 24V or 48V rails.
Automotive Interior Lighting
Used for ambient lighting and instrument cluster backlighting where a stable 100mA current is required.
Constant Current Source
Can be utilized as a general-purpose current limiter for protecting sensitive circuitry up to 60V.

Key Specifications

Type Linear
Applications Signage
Mounting Type Surface Mount
Package / Case POWERDI123
Voltage - Output 60V
Number of Outputs 1
Internal Switch(s) Yes
Operating Temperature -40degC ~ 125degC (TA)
Voltage - Supply (Max) 60V
Voltage - Supply (Min) 2.5V
Supplier Device Package PowerDI 123
Current - Output / Channel 100mA

Getting Started

To implement this part, place it in series with the LED string; ensure the PowerDI123 package has adequate copper pour for thermal dissipation as the device will drop excess voltage as heat. Verify that the total voltage drop across the LEDs plus the minimum 2.5V overhead does not exceed the 60V supply maximum.