AL5802-7 Diodes Inc., AL5802-7 Datasheet

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AL5802-7

Manufacturer Part Number
AL5802-7
Description
LED Lighting Drivers Discrete LED Driver Driver,SOT26,3K
Manufacturer
Diodes Inc.
Datasheet

Specifications of AL5802-7

Product Category
LED Lighting Drivers
Rohs
yes
Input Voltage
4.5 V to 30 V
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Package / Case
SOT-26
Minimum Operating Temperature
- 40 C
Power Dissipation
1 W

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Typical Application Circuit
Description
The AL5802 combines a high gain NPN transistor with a pre-biased
NPN transistor to make a simple small footprint LED driver.
The LED current is set by an external resistor connected to from
REXT pin (6) to GND pin (4), the internal high gain transistor
develops approximately 0.6V across the external resistor.
The AL5802 open-collector output can operate from 0.8V to 30V
enabling it to operate from 5V to 24V power supplies without
additional components.
PWM dimming of the LED current can be achieved by either driving
the BIAS pin (2) with a low impedance voltage source, or driving the
EN pin (3) with an external open-collector NPN transistor or open-
drain N-channel MOSFET.
The AL5802 is available in a SOT26 package and is ideal for driving
20mA to 120mA LED currents.
Features
Notes:
AL5802
Document number: DS35516 Rev. 6 - 2
Reference voltage VRSET = 0.65V
-40 to 125ºC temperature range
0.8V to 30V open-collector output
Negative temperature co-efficient – automatically reduce the
LED current at high temperatures
Low thermal impedance SOT26 with copper leadframe
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Qualified to AEC-Q101 Standards for High Reliability
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com 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.
www.diodes.com
30V, ADJUSTABLE CURRENT SINK LINEAR LED DRIVER
1 of 11
Pin Assignments
Applications
Linear LED driver
LED signs
Offline LED luminaries
Q2
6
1
(Top View)
SOT26
5
2
4
3
Q1
© Diodes Incorporated
December 2012
AL5802

Related parts for AL5802-7

AL5802-7 Summary of contents

Page 1

... PWM dimming of the LED current can be achieved by either driving the BIAS pin (2) with a low impedance voltage source, or driving the EN pin (3) with an external open-collector NPN transistor or open- drain N-channel MOSFET. The AL5802 is available in a SOT26 package and is ideal for driving 20mA to 120mA LED currents. Features • ...

Page 2

... 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. Notes: 4. With pins 5 and 6 connected together. AL5802 Document number: DS35516 Rev Function Fig. 1 Block Diagram Characteristics www.diodes.com AL5802 Values Unit ...

Page 3

... 50µ 30V 4V 10mA 1mA 5V 150mA www.diodes.com AL5802 Symbol Value 0. 335 143 R θ JA 120 Min Max Unit 4 0 120 mA -40 125 °C Min Typ Max ⎯ ...

Page 4

... Thermal Characteristics AMBIENT TEMPERAURE (°C) Fig. 2 Derating Curve Fig. 4 Thermal Resistance vs. Area AL5802 Document number: DS35516 Rev Fig. 3 Max Power vs. Area www.diodes.com AL5802 December 2012 © Diodes Incorporated ...

Page 5

... AL5802 Document number: DS35516 Rev Fig. 6 Output Current vs. R out Fig. 8 Output Current vs. V out Fig. 10 Output Current vs. V out www.diodes.com AL5802 EXT out bias December 2012 © Diodes Incorporated ...

Page 6

... Fig. 11 Output Current vs. V Fig. 13 Output Current vs. V AL5802 Document number: DS35516 Rev Fig. 12 Output Current vs. V bias bias www.diodes.com AL5802 bias December 2012 © Diodes Incorporated ...

Page 7

... CE(Q2) LED CC BE(Q2) As the output current of AL5802 increases necessary to provide appropriate thermal relief to the device. The power dissipation supported by the device is dependent upon the PCB board material, the copper area and the ambient temperature. The maximum dissipation the device can handle is given by: ...

Page 8

... Fig. 16 Application Circuits for LED Driver with PWM Dimming Functionality Fig. 17 Typical LED current response vs. PWM duty cycle for AL5802 Document number: DS35516 Rev -or PWM DUTY CYCLE (%) R = 13Ω at 400Hz PWM frequency EXT www.diodes.com AL5802 100 December 2012 © Diodes Incorporated ...

Page 9

... The BAS40BRW incorporates four low V single package and allows more voltage available for the LED stack and dissipates less power that standard rectifier bridges www.diodes.com AL5802 in-line with the driver/LED combination. The low F for its package F , Schottky diodes into a F December 2012 © ...

Page 10

... Y = Year (ex 2011 Month (ex September) 2013 2014 A B Apr May Jun Jul Aug Dim www.diodes.com AL5802 7” Tape and Reel Quantity Part Number Suffix -7 -7 2015 2016 2017 Sep Oct Nov Dec SOT26 ...

Page 11

... Diodes Incorporated products in such safety-critical, life support devices or systems. Copyright © 2012, Diodes Incorporated www.diodes.com AL5802 Document number: DS35516 Rev Dimensions Value (in mm IMPORTANT NOTICE LIFE SUPPORT www.diodes.com AL5802 3.20 1.60 0.55 0.80 2.40 0.95 December 2012 © Diodes Incorporated ...

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