Diodes Incorporated
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AL5802LPL (Obsolete)

30V Adjustable Current Sink Linear LED Driver

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The AL5802LPL 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 from the REXT Pin (4) to the GND Pin (6), and the internal high gain transistor develops approximately 0.6V across the external resistor.

The AL5802LPL’s open-collector output can operate from 0.8V to 30V making it suitable for industry standard 5V to 24V power supplies without additional components.

PWM dimming of the LED current can be achieved by either driving the BIAS Pin (1) with a low impedance voltage source, or driving the EN Pin (5) with an external open-collector NPN transistor or open-drain N-Channel MOSFET.

The AL5802LPL is available in a U-DFN3030-6 (Type B) package and is ideal for driving 10mA to 120mA LED currents.


  • Reference Voltage VREXT = 0.65V
  • -40 to +125°C Operating Temperature Range
  • 0.8V to 30V Open-Collector Output
  • Negative Temperature Coefficient – Automatically Reduces the LED Current at High Temperatures
  • Totally Lead-Free & Fully RoHS Compliant
  • Halogen and Antimony Free. “Green” Device


  • LED Signage
  • General Illumination
  • Emergency Lighting

Product Specifications

Product Parameters

Accuracy (%) N/A
BVCBO (V) Min @ Ic=50µA, IE=0µA 30
BVCEO (V) Min @ Ic=1.0mA, IB=0 40
BVEBO (V) Min @ Ie=10µA, IC=0 6
BVEBO (V) Min @ Ie=50µA, IC=0µA 5
Dimming PWM
Efficiency (%) N/A
ESD Diodes (Y|N) N
Frequency (kHz) N/A
hFE Min @ IC=100µA, VCE=10V NA
hFE Min @ IC=10mA, VCE=10V 100
hFE Min @ IC=150mA, VCE=50V 100
hFE Min @ IC=1mA, VCE=10V 70
IBL (nA) Max @ VCE=30V, VBE(Off)=30V 50
ICBO (µA) Max @ VCB=30V, IE=0µA 0.5
ICEX (nA) Max @ VCE=30V, VBE(Off)=30V 50
IEBO (µA) Max @ VEB=4V, IC=0µA 0.5
LED Current (A) 150
LED Current Sense Voltage (mV) 650
Maximum Supply Voltage (V) 30
Maximum VOUT (V) 30
Minimum Supply Voltage (V) 4.5
Polarity NPN, NPN Pre-Biased
Temperature Range (°C) -40 to 125
Topology Linear LED Driver
VBE(on) (V) Max @ IC=2mA, VCE=15V 1.1
VBE(on) (V) Max @ IC=2mA, VCE=5V 1.1
VBE(on) (V) Min @ IC =2mA, VCE=15V 0.3
VBE(on) (V) Min @ IC=2mA, VCE=5V 0.3
VBE(sat) (V) Max @ IC=10mA, IB=10mA 0.85
VBE(sat) (V) Min @ IC=10m A, IB=10mA 0.65
VCE(sat) (V) Max @ IC=10mA, IB=10mA 0.2

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Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2418 2019-11-07 2020-05-07 Device End of Life (EOL)
PCN-2315 2018-03-09 2018-06-09 Qualification of Alternative Wafer Sources for Select Products Due to Closure of Diodes FabTech (KFAB) Facility