AL5802 Series

30V Adjustable Current Sink Linear LED Driver

Catalog

30V Adjustable Current Sink Linear LED Driver

Part	Applications	Dimming	Number of Outputs	Voltage - Output [Max]	Voltage - Output [Min]	Operating Temperature [Min]	Operating Temperature [Max]	Mounting Type	Package / Case	Current - Output / Channel	Voltage - Supply (Max)	Supplier Device Package	Voltage - Supply (Min) [Min]	Type	Voltage - Output
Diodes Inc AL5802QW6-7	Signage	PWM	1	30 VDC	0.8 V	-40 °C	125 °C	Surface Mount	SOT-23-6	120 mA	30 V	SOT-26	4.5 V	Linear
Diodes Inc AL5802-7	Signage	PWM	1	30 VDC	0.8 V	-40 °C	125 °C	Surface Mount	SOT-23-6	120 mA	30 V	SOT-26	4.5 V	Linear
Diodes Inc AL5802LPL-7		PWM	1			-40 °C	125 °C	Surface Mount	6-UDFN Exposed Pad	120 mA	30 V	U-DFN3030-6	4.5 V	Linear	30 VDC
Diodes Inc AL5802LP4-7	Signage	PWM	1			-40 °C	125 °C	Surface Mount	6-XFDFN Exposed Pad	100 mA	30 V	X2-DFN1310-6 (Type B)	4.5 V	Linear	30 VDC

Catalog

30V Adjustable Current Sink Linear LED Driver

Key Features

• Reference voltage VRSET= 0.65V

-40 to 125°C temperature range

• 0.8V to 30V open-collector output

• Negative temperature co-efficient – automatically reduce the LED current at high temperatures

• Low thermal impedance SOT26 with copper leadframe

• SOT26: Available in "Green" Molding Compound (No Br, Sb)

• Qualified to AEC-Q101 Standards for High Reliability

Description

The AL5802 combines a high gain NPN transistor with a prebiased NPN transistor to make a simple small footprint LED driver. The LED current is set by an external resistor connected to from REXT pin (6) to GND pin (4), the internal high gain transistor develops approximately 0.6V across the external resistor. The AL5802 open-collector output can operate from 0.8V to 30V enabling it to operate from 5V to 24V power supplies without additional components. PWM dimming of the LED current can be achieved by either driving the BIAS pin (2) with a low impedance voltage source, or driving the EN pin (3) with an external opencollector NPN transistor or open-drain N-channel MOSFET. The AL5802 is available in a SOT26 package and is ideal for driving 20mA to 120mA LED currents.