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Diodes Semiconductor Electronic Components Datasheet

AL5802LP Datasheet

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



Diodes Semiconductor Electronic Components Datasheet

AL5802LP Datasheet

LED DRIVER

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



Diodes Semiconductor Electronic Components Datasheet

AL5802LP Datasheet

LED DRIVER

No Preview Available !

AL5802LP pdf
AL5802LP
Absolute Maximum Ratings (Note 5)
Note:
Symbol
VOUT
VBIAS
VFB
VEN
VREXT
IOUT
TOP
TSTG
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 Temperature
Storage Temperature
Values
30
30
6
6
6
150
-40 to +150
-55 to +150
Unit
V
V
V
V
V
mA
°C
°C
5. These are stress ratings only. Operation outside the absolute maximum ratings may cause device failure. Operation at the absolute maximum rating for
extended periods of time may reduce device reliability.
Package Thermal Data
Characteristic
Power Dissipation (Note 6) @ TA = +25°C
Thermal Resistance, Junction to Ambient Air (Note 6) @ TA = +25°C
Symbol
PD
RθJA
Value
0.44
284
Unit
W
°C/W
Recommended Operating Conditions
Symbol
Parameter
Min
VBIAS
Supply Voltage Range
4.5
VOUT
OUT Voltage Range
0.8
ILED LED Pin Current (Note 7)
10
Notes:
TA Operating Ambient Temperature Range
-40
6. Device mounted on FR-4 PCB, single-sided, 2oz copper trace weight with minimum recommended pad layout.
7. Subject to ambient temperature, power dissipation and PCB substrate material selection.
Max
30
30
120
+125
Unit
V
mA
°C
Electrical Characteristics NPN Transistor Q1 (@TA = +25°C, unless otherwise specified.)
Symbol
V(BR)CEO
V(BR)EBO
ICEX
IBL
Characteristic
Collector-Emitter Breakdown Voltage (Notes 8 & 9)
Emitter-Base Breakdown Voltage
Collector Cut-Off Current (Note 9)
Base Cut-Off Current (Note 9)
hFE DC Current Gain
VCE(SAT)
VBE(SAT)
VBE(ON)
Collector-Emitter Saturation Voltage (Note 8)
Base-Emitter Saturation Voltage
Base-Emitter Turn-On Voltage
Test Condition
IC = 1.0mA, IB = 0
IE = 10µA, IC = 0
VCE = 30V, VEB(OFF) = 3.0V
VCE = 30V, VEB(OFF) = 3.0V
IC = 100µA, VCE = 1.0V
IC = 1.0mA, VCE = 1.0V
IC = 10mA, VCE = 1.0V
IC = 10mA, IB = 1.0mA
IC = 10mA, IB = 1.0mA
VCE = 1.50V, IC = 2.0mA
Min Typ Max
40 — —
6.0 — —
— — 50
— — 50
40 — —
70 — —
100 300
— — 0.20
0.65 0.85
0.30 1.10
Notes:
8. Short duration pulse test used to minimize self-heating effect.
9. Guaranteed by design and tested only at the wafer level for single die. These parameters cannot be tested at the finished goods level due to
the testability of the device changed after packaging multiple dies to form an application circuit.
Unit
V
V
nA
nA
V
V
V
AL5802LP
Document number: DS37549 Rev. 4 - 2
3 of 10
www.diodes.com
March 2016
© Diodes Incorporated




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