Simple Low-EMI LED driver for high

Simple Low-EMI LED driver for high
Issue Number │001
September 2011
New Product
Announcement
AL8807
Simple Low-EMI LED driver for highbrightness LED lamps
The AL8807 is Diodes’ latest
buck LED driver that drives
LEDs with constant current up
to 1.2A.
With its 30V maximum
operating voltage it can drive
up to 8 LEDs. With its
minimum of 6V it comfortably
operates at 12VAC/DC rails.
The AL8807 switches at up to
1MHz - which allows the use
of small size external
components. The small
package size coupled with the
need for only 4 external
components produces a small
solution footprint.
The accuracy, temperature
range and cost make it ideally
suited to cost sensitive lighting
applications.
AL8807 is available in SOT25
enabling it to maintain its high
drive capability over a wider
ambient temperature range.
MSOP-8EP package supports
larger LED currents and will be
available mid-Q4
The Diodes advantage
The AL8807 provides a simple low EMI solution for Low Voltage
general illumination LED lamps
 Reduced switching noise and ringing
Reduces EMI issues – especially in non-optimised layout PCBs
 Up to 30V & 1.2A LED drive capability
Drives up to 8 LEDs in series and provides cost effective solution for
MR16 and other 12VAC/DC systems
 Small footprint packages – SOT25 & MSOP-8EP
High power density small PCB footprint solution
 5% initial average LED current accuracy
Meets accuracy requirements of most lighting apps at cost effective
price and improves inter-channel matching.
 Simple digital PWM dimming with DC dimming on the CTRL pin
Provides flexible scheme to users with different dimming methods:
DC for thermal control, PWM for brightness control (doesn’t over drive
the LED current)
Applications
 General illumination
 Multi-substrate LED driving
 Driving of parallel LED chains
 MR16 lighting
 12VAC/DC lighting
 SELV lighting
www.diodes.com
Issue Number │001
September 2011
New Product
Announcement
AL8807
Simple Low-EMI LED driver for highbrightness LED Lamps
D1
Typical Application:
DFLS2100
MR16 LED lamp
R1
ANODE
0R15
D3
DFLS2100 D2
U1
SET
C5
P1
VIN
DFLS2100
100nF
C2
C3
C1
SW
CTRL
P2
D4
DFLS2100
150µF
D5
150µF
100nF
GND
C4
L1
1µF
CATHODE
33µH
AL8807
DFLS2100
GND
Diodes Medium Voltage High brightness LED Drivers
Temp
range
°C
AP8800A Low Cost 1W LED Dr -40~85
ZXLD1350 AEC-Q100 1W Dr -40~105
ZXLD1360 AEC-Q100 1W Dr -40~125
AL8805 Low Cost 3W LED Dr -40~125
Part
number
AL8807
Comment
VIN
V
8 ~ 28
7 ~ 30
7 ~ 30
6 ~ 30
Low-EMI 3W LED Dr -40~125 6 ~ 30
AL8806 Multi-Die 3+W LED Dr -40~125 6 ~ 30
AP8802H
60V 3W LED Dr
-40~105 8 ~ 60
ZXLD1362
60V 3W LED Dr
-40~125 6 ~ 60
ZXLD1366
60V 3+W LED Dr
- Tighter accuracy
-40~125 6 ~ 60
LED
Accuracy Frequency Efficiency
Package
Dimming
Current
mA
%
MHz
%
θJA
370
5
0.6
92
PWM/DC TSOT23-5 (250)
380
5
1
95
PWM/DC TSOT23-5 (250)
1
5
1
95
PWM/DC TSOT23-5 (82)
1
5
1
98
PWM/DC SOT25 (250)
1
SOT25 (250)
5
1
98
PWM/DC
1.2
MSOP-8EP (69)
1.5
5
1
96
PWM/DC MSOP-8EP (69)
1
5
500
92
PWM/DC SO-8EP (45)
1
5
1
95
PWM/DC TSOT23-5 (82)
TSOT23-5 (82)
1
2.5
1
95
PWM/DC DFN3030-6 (44)
SO-8EP (45)
To find out more information:
LED Driver Web page
http://www.diodes.com/products/catalog/list.php?parent-id=91
Datasheet
http://www.diodes.com/datasheets/AL8807.pdf
Ordering information
Device
AL8807W5-7
Packaging
SOT25
AL8807MP-13
MSOP-8EP
Part mark
B6 Y W X
YWXE
AL8807
Reel size
7”
Tape width
8mm
Quantity
3000
13”
12mm
2500
All variants are in packages that are “Green” Molding Compound (No Br, Sb) with Lead Free Finish/RoHS Compliant (Note 1)
Notes:1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied, see EU Directive 2002/95/EC Annex Codes for
date coding on part marks
Y Year 0~9
W A~Z week 1~26 a~z week 27~53 X: A~Z: Internal code
www.diodes.com
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