60V LINEAR LED CONTROLLER
The AL5815 and AL5816 are 5-terminal adjustable constant current
linear LED controllers offering excellent temperature stability and
current capability. They can work with a wide input voltage range from
4.5V to 60V. With its low 200mV current sense FB voltage, it controls
the regulation of LED current with minimum power dissipation
compared with traditional linear LED drivers. This makes it ideal for
medium to high current LEDs.
The device has an internal output drive up to 15mA, which enables it
to drive external Bipolar transistors or MOSFETs. It also provides the
capability to drive longer LED chains with low drop out voltage and
multiple LED channels.
AL5815 and AL5816 have their LED current adjusted and controlled
by a sense resistor connected across FB pin and GND. The voltage
across this resistor is controlled to a precise 0.2V thus controlling the
The AL5815 has an enable (ENB) pin. Bringing ENB low to enable
the device and turn on external transistor. Bringing ENB high puts the
device into a low quiescent current shutdown state. The AL5815 has
a turn on delay built in which makes sure there is not a high current
surge at startup. The average LED current can be adjusted by
applying a low frequency PWM signal less than 200Hz to the ENB
If PWM dimming higher than 200Hz is required the AL5816 has
replaced the enable pin with a PWM pin. This device can run at
frequencies greater than 200Hz.
The AL5815 and AL5816 are available in SOT25 package.
Wide Input Voltage Range from 4.5V to 60V
Low Reference Voltage (VFB = 0.2V)
4% Reference Voltage Tolerance
Up to 15mA Driver Capability for Bipolar Transistor
Low Standby Current for AL5815
PWM Dimming Frequency Higher than 200Hz for AL5816
Input Under Voltage Lock-out
Over Temperature Shutdown
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
AL5815 （Top View）
Commercial and Industrial Lighting
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.
2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and
3. Halogen- and antimony-free "green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
Document number: DS39991 Rev. 3 - 2
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