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Diodes Semiconductor Electronic Components Datasheet

AL5802LP4 Datasheet

ADJUSTABLE CURRENT SINK LINEAR LED DRIVER

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AL5802LP4 pdf
AL5802LP4
30V, ADJUSTABLE CURRENT SINK LINEAR LED DRIVER
Description
The AL5802LP4 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 (1). The internal high-gain transistor
develops approximately 0.6V across the external resistor.
The AL5802LP4’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 (4) with a low impedance voltage source, or driving the
EN Pin (6) with an external open-collector NPN transistor or
open-drain N-Channel MOSFET.
The AL5802LP4 is available in a X2-DFN1310-6 package and is
ideal for driving up to 120mA current.
Features
Reference Voltage VREXT = 0.65V
-40 to +125°C Temperature Range
0.8V to 30V Open-Collector Output
Negative Temperature Co-Efficient Automatically Reduces
the LED Current at High Temperatures
Low Thermal Impedance, Small Footprint X2-DFN1310-6
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)
Mechanical Data
Case: X2-DFN1310-6
Case Material: Molded Plastic, “Green” Molding Compound.
UL Flammability Classification Rating 94V-0
Moisture Sensitivity: Level 1 per J-STD-020
Terminals: NiPdAu (Lead-Free) Plating.
Solderable per MIL-STD-202, Method 208 e4
Weight: 0.0013 grams
Applications
Linear LED Driver
LED Signs
Offline LED Luminaries
Ordering Information (Note 8)
Device
AL5802LP4
Qualification
Commercial
Packaging
X2-DFN1310-6
Tape and Reel
Quantity
Part Number Suffix
3,000/Tape & Reel
-7
Note:
8. For packaging details, go to our website at http://www.diodes.com/products/packages.html.
Marking Information
802 = Product Type Marking Code
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.
AL5802LP4
Document number: DS37441 Rev. 4 - 2
1 of 10
www.diodes.com
February 2016
© Diodes Incorporated



Diodes Semiconductor Electronic Components Datasheet

AL5802LP4 Datasheet

ADJUSTABLE CURRENT SINK LINEAR LED DRIVER

No Preview Available !

AL5802LP4 pdf
Typical Application Circuit
AL5802LP4
Pin Descriptions
Pin Number
1
2
3
4
5
6
Name
GND
REXT
OUT
BIAS
N/C
EN
Function
Ground Reference Point for Setting LED Current
Current Sense Pin
LED current sensing resistor should be connected from here to GND
Open-Collector LED Driver Output
Biases the Open Collector Output Transistor
No Connection
Enable Pin for PWM Dimming
Provides access to the base of Q2 and collector of Q1
Functional Block Diagram
AL5802LP4
Document number: DS37441 Rev. 4 - 2
Figure 1 Block Diagram
2 of 10
www.diodes.com
February 2016
© Diodes Incorporated



Diodes Semiconductor Electronic Components Datasheet

AL5802LP4 Datasheet

ADJUSTABLE CURRENT SINK LINEAR LED DRIVER

No Preview Available !

AL5802LP4 pdf
AL5802LP4
Absolute Maximum Ratings
Symbol
VOUT
VBIAS
VFB
VEN
VREXT
IOUT
TJ
TST
Characteristics
Output Voltage Relative to GND
BIAS Voltage Relative to GND
LED Voltage Relative to GND
EN Voltage Relative to GND
REXT Voltage Relative to GND
Output Current
Operating Junction Temperature
Storage Temperature
Values
30
30
6
6
6
120
-40 to +150
-55 to +150
Unit
V
V
V
V
V
mA
°C
°C
These are stress ratings only. Operation outside the absolute maximum ratings may cause device failure. Operation at the absolute maximum rating for extended
periods may reduce device reliability.
Package Thermal Data
Characteristic
Power Dissipation (Note 4) @TA = +25°C
Thermal Resistance, Junction to Ambient Air (Note 4) @TA = +25°C
Symbol
PD
RθJA
Value
0.36
347
Unit
W
°C/W
Recommended Operating Conditions
Symbol
VBIAS
VOUT
ILED
TA
Parameter
Supply Voltage Range
OUT Voltage Range
LED Pin Current (Note 5)
Operating Ambient Temperature Range
Notes:
4. Device mounted on FR-4 PCB, 2oz with minimum recommended pad layout.
5. Subject to ambient temperature, power dissipation and PCB.
Min Max Unit
4.5 30
0.8 30
V
10 100 mA
-40 +125
°C
AL5802LP4
Document number: DS37441 Rev. 4 - 2
3 of 10
www.diodes.com
February 2016
© Diodes Incorporated




Part Number AL5802LP4
Description ADJUSTABLE CURRENT SINK LINEAR LED DRIVER
Maker Diodes
Total Page 10 Pages
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