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Diodes Semiconductor Electronic Components Datasheet

AL5812 Datasheet

150mA ADJUSTABLE LINEAR LED DRIVER

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AL5812 pdf
AL5812
60V, 150mA ADJUSTABLE LINEAR LED DRIVER
Description
The AL5812 is an adjustable Linear LED driver offering excellent
temperature stability and output handling capability. The AL5812
simplifies the design of linear and isolated or non-isolated LED
drivers by setting the LED current with standard value resistors.
The AL5812 has an open drain output that can swing from 1V up to
60V enabling it drive long LED chains. Its low 0.5V RSET pin is outside
of the LED current path and so accuracy is maintained while
minimizing the required overheads to regulate the LED current. This
reduces its power dissipation when compared to traditional linear
LED drivers. This makes it ideal for driving LEDs up to 150mA
(commonly referred to as ½W LEDs).
Longer LED chains can be driven by tapping VCC from the chain,
where the chain voltage may exceed 60V.
The AL5812 is available in the exposed pad MSOP-8EP and
U-DFN3030-6 packages.
Pin Assignments
(Top View)
VCC 1
NC 2
NC 3
RSET 4
MSOP-8EP
(Top View)
8 LED
7 NC
6 NC
5 GND
VCC 1
6 LED
NC 2
RSET 3
Exposed
Pad
5 NC
4 GND
Features
Low Reference Voltage (VRSET = 0.5V)
-40°C to +125°C Temperature Range
±3% LED Current Tolerance
Low Temperature Drift
1V to 60V Open-Drain Output
High Power Supply Rejection
MSOP-8EP and U-DFN3030-6
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
U-DFN3030-6
Applications
Isolated Offline LED Converters
Linear LED Driver
LED Signs
www.DataSheet.net/
Instrumentation Illumination
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 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.
Typical Applications Circuit
VIN
CIN 0.1µF
RSET 7k5
VCC LED
AL5812
RSET
GND
VIN
CIN 0.1µF
VCC LED
AL5812
RSET
GND
RSET 7k5
AL5812
Document number: DS35616 Rev. 1 - 2
1 of 12
www.diodes.com
September 2012
© Diodes Incorporated
Datasheet pdf - http://www.DataSheet4U.co.kr/



Diodes Semiconductor Electronic Components Datasheet

AL5812 Datasheet

150mA ADJUSTABLE LINEAR LED DRIVER

No Preview Available !

AL5812 pdf
AL5812
Pin Descriptions
Pin
Name
VCC
RSET
GND
LED
NC
EP
Pin
Number
(MSOP8-EP)
1
4
5
8
2, 3, 6, 7
EP
Pin
Number
(U-DFN3030-6)
1
3
4
6
2, 5
EP
Function
Power Supply Input.
Connect a 0.1μF ceramic capacitor between VCC and GND as close as possible to the
device.
LED Current Setting Pin.
Connect a resistor from this pin to GND:
ILED = 750/RSET
May also be used to provide PWM dimming functionality.
Ground Reference Point of Device.
LED Current Sink Output.
No Connection.
Exposed Pad (bottom).
Used to improve thermal impedance of package.
It must be connected to GND directly underneath the package but not used as sole
GND potential terminal.
Functional Block Diagram
www.DataSheet.net/
AL5812
Document number: DS35616 Rev. 1 - 2
2 of 12
www.diodes.com
September 2012
© Diodes Incorporated
Datasheet pdf - http://www.DataSheet4U.co.kr/



Diodes Semiconductor Electronic Components Datasheet

AL5812 Datasheet

150mA ADJUSTABLE LINEAR LED DRIVER

No Preview Available !

AL5812 pdf
AL5812
Absolute Maximum Ratings (@TA = +25°C, unless otherwise specified.)
Symbol
VCC
VLED
VRSET
ILED
ESD HBM
ESD CDM
TJ
TST
Parameters
Supply Voltage Relative to GND Pin (Note 4)
LED Pin Voltage Relative to GND Pin (Note 4)
RSET Pin Voltage Relative to GND
LED Pin Current Sink Current Range
Human Body Model ESD Protection
Charged Device Model ESD Protection
Operating Junction Temperature
Storage Temperature
Ratings
-0.3 to +66
-0.3 to +66
-0.3 to +6
165
1
1.2
-40 to +150
-55 to +150
Unit
V
V
V
mA
kV
kV
°C
°C
Note:
Caution:
4.VCC pin can be greater or smaller than VLED; neither should go below GND.
Stresses greater than the 'Absolute Maximum Ratings' specified above, may cause permanent damage to the device. These are stress ratings only;
functional operation of the device at these or any other conditions exceeding those indicated in this specification is not implied. Device reliability may be
affected by exposure to absolute maximum rating conditions for extended periods of time.
Semiconductor devices are ESD sensitive and may be damaged by exposure to ESD events. Suitable ESD precautions should be taken when
handling and transporting these devices.
Package Thermal Data
Package
MSOP-8EP
U-DFN3030-6
θJC
Thermal Resistance
Junction-to-Case
(Note 7)
39
14
θJA
Thermal Resistance
Junction-to-Ambient
(Note 7)
90°C/W (Note 5)
69°C/W (Note 6)www.DataSheet.net/
PDIS
TA = +25°C, TJ = +125°C
(Note 7)
1.1W
1.47W
Notes:
5. Test condition for MSOP-8EP: Device mounted on FR-4 PCB (51mm x 51mm 2oz copper, minimum recommended pad layout on top layer and
thermal vias to bottom layer ground plane. For better thermal performance, larger copper pad for heat-sink is needed.
6. Test condition for U-DFN3030-6: Device mounted on FR-4 PCB (51mm x 51mm 2oz copper, minimum recommended pad layout on top layer and
thermal vias to bottom layer with maximum area ground plane. For better thermal performance, larger copper pad for heat-sink is needed
7. Dominant conduction path via exposed pad.
Recommended Operating Conditions (@TA = +25°C, unless otherwise specified.)
Symbol
VCC
VLED
ILED
TA
Parameter
Supply Voltage Range Relative to GND Pin
LED Pin Output Voltage Range Relative to GND Pin
LED Pin Current (Notes 8 & 9)
Operating Ambient Temperature Range
Min
3.5
1
10
-40
Max
60
60
150
+125
Unit
V
mA
°C
Notes:
8. For improved accuracy LED current should be greater than 60mA.
9. Maximum LED current is also limited by ambient temperature and power dissipation such that junction temperature should be kept less than or equal
to +125°C.
AL5812
Document number: DS35616 Rev. 1 - 2
3 of 12
www.diodes.com
September 2012
© Diodes Incorporated
Datasheet pdf - http://www.DataSheet4U.co.kr/




Part Number AL5812
Description 150mA ADJUSTABLE LINEAR LED DRIVER
Maker Diodes
Total Page 12 Pages
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