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AL5816 Datasheet

60V LINEAR LED CONTROLLER

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AL5815/AL5816
60V LINEAR LED CONTROLLER
Description
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
current.
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
pin.
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.
Features
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)
Pin Assignments
AL5815 Top View
ENB 1
5 VCC
GND 2
FB 3
4 OUT
SOT25
AL5816Top View
PWM 1
5 VCC
GND 2
FB 3
SOT25
Applications
Commercial and Industrial Lighting
Exterior Lighting
Appliance Lights
4 OUT
Notes:
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
Lead-free.
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.
AL5815/AL5816
Document number: DS39991 Rev. 3 - 2
1 of 12
www.diodes.com
July 2018
© Diodes Incorporated


Diodes Semiconductor Electronic Components Datasheet

AL5816 Datasheet

60V LINEAR LED CONTROLLER

No Preview Available !

Typical Applications Circuit
VIN
C1
0.1µF
C2
10µF
AL5815
VCC
OUT
OFF ENB
ON
GND
FB
GND
VIN
AL5815/AL5816
VIN
Q1
RS
C1
0.1µF
C2
10µF
AL5815
VCC
OUT
OFF ENB
ON
GND
FB
GND
VIN
Q1
RS
C1
0.1µF
C2
10µF
AL5816
VCC
OUT
PWM
GND
FB
GND
Pin Descriptions
Pin Number
1
2
3
4
5
Pin Name
ENB (AL5815)
PWM (AL5816)
GND
FB
OUT
VCC
Functional Block Diagram
Q1 C1 C2
0.1µF
10µF
RS
GND
AL5816
VCC
OUT
PWM
GND
FB
Q1
RS
Function
Chip Enable, Active Low (Can be Used for Low Frequency Dimming)
PWM Signal for High Frequency Dimming of the LED
Ground
Feedback Input, Regulates to 200mV Nominal
Driving Output to External Transistors
Input Supply Power
AL5815/AL5816
Document number: DS39991 Rev. 3 - 2
2 of 12
www.diodes.com
July 2018
© Diodes Incorporated


Part Number AL5816
Description 60V LINEAR LED CONTROLLER
Maker Diodes
Total Page 12 Pages
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