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AL5802LP

LED DRIVER



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AL5802LP pdf
AL5802LP
LED DRIVER, 30V, LINEAR, ADJUSTABLE, CURRENT SINK
Description
The AL5802LP combines a high-gain NPN transistor with a pre-
biased NPN transistor to make a simple, small footprint LED driver.
Pin Assignments
The LED current is set by an external resistor connected from REXT
pin (2) to GND pin (3), and the internal high-gain transistor develops
approximately 0.6V across the external resistor.
The AL5802LP’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 (6) with a low impedance voltage source, or driving the
EN pin (4) with an external open-collector NPN transistor or
open-drain N-Channel MOSFET.
The AL5802LP is available in a U-DFN1616-6 (Type F) package and
is ideal for driving 10mA to 120mA LED currents.
Features
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
Low Thermal Impedance, Small Footprint DFN1616-6 Package
with Exposed Pads
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Internal Schematic
(Top View)
(Bottom View)
Package: U-DFN1616-6 (Type F)
The collector of Q2 is connected to pin 1 and pad 7 which is
on the underside of the package
Pad 8 is electrically tied to the collector of Q1 and to the
base of Q2, i.e. it is common with terminal 4
Mechanical Data
Case: U-DFN1616-6 (Type F)
Case Material: Molded Plastic, “Green” Molding Compound;
UL Flammability Classification Rating 94-V-0.
Moisture Sensitivity: Level 1 per J-STD-020
Terminals: Finish NiPdAu over Copper Leadframe;
Solderable per MIL-STD-202, Method 208 e4
Weight: 0.005 grams (Approximate)
Applications
Linear LED Driver
LED Signs
Offline LED Luminaries
Ordering Information (Note 4)
Device
AL5802LP
Qualification
Commercial
Packaging
U-DFN1616-6 (Type F)
Tape and Reel
Quantity
Part Number Suffix
3,000/Tape & Reel
-7
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html 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.
4. For packaging details, go to our website at http://www.diodes.com/products/packages.html.
AL5802LP
Document number: DS37549 Rev. 4 - 2
1 of 10
www.diodes.com
March 2016
© Diodes Incorporated



No Preview Available !

AL5802LP pdf
Marking Information
AL5802LP
102 102 = Product Type Marking Code
Typical Application Circuit
Pin Descriptions
Pin Number
1
2
3
4
5
6
Name
OUT
REXT
GND
EN
N/C
BIAS
Function
Open-Collector LED Driver Output
Current Sense Pin
LED current sensing resistor should be connected from here to GND
Ground Reference Point for Setting LED Current
Enable Pin for PWM Dimming
Provides access to the base of Q2 and the collector of Q1
No Connection
Biases the Open Collector Output Transistor
Functional Block Diagram
AL5802LP
Document number: DS37549 Rev. 4 - 2
Figure 1 Block Diagram
2 of 10
www.diodes.com
March 2016
© Diodes Incorporated



Part Number AL5802LP
Description LED DRIVER
Maker Diodes - Diodes
Total Page 10 Pages
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