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A6280 Datasheet(PDF) 2 Page - Allegro MicroSystems

Part No. A6280
Description  3 Bit Constant Current LED Driver with PWM Control
Download  11 Pages
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Maker  ALLEGRO [Allegro MicroSystems]
Homepage  http://www.allegromicro.com
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A6280 Datasheet(HTML) 2 Page - Allegro MicroSystems

 
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3 Bit Constant Current LED Driver with PWM Control
A6280
2
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
Part Number
Packing*
Mounting
A6280EA-T
25 pieces/tube
16 pin DIP
A6280EESTR-T
1500 pieces/reel
16 pin QFN/MLP
*Contact Allegro for additional packing options.
Selection Guide
can be tied to the LED voltage supply bus, thus eliminating the need
for a separate chip supply bus or an external linear regulator.
The A6280 is supplied in a 16 pin dual in line (DIP) package (suffix
‘A’) package and in a 16 lead QFN/MLP (suffix ‘ES’) package. The
packages are lead (Pb) free with 100% matte-tin leadframe plating.
Absolute Maximum Ratings
Characteristic
Symbol
Notes
Rating
Units
Supply Voltage
VIN
17
V
Output Voltage
VO
–0.5 to 17
V
Output Current
IO
170
mA
Ground Current
IGND
600
mA
Logic Input Voltage Range
VI
–0.3 to 7
V
Operating Ambient Temperature
TA
Range E
–40 to 85
ºC
Maximum Junction Temperature
TJ(max)
150
ºC
Storage Temperature
Tstg
–40 to 150
ºC
Description (continued)
Thermal Characteristics
Characteristic
Symbol
Test Conditions*
Rating Units
Package Thermal Resistance
RθJA
Package A, 4 layer PCB
38
ºC/W
Package ES, 4 layer PCB
40
ºC/W
Package ES, 1 layer PCB with 1 in2. Cu area
70
ºC/W
*For additional information, refer to the Allegro website.
0
255075
100
125
150
Temperature (°C)
3500
3250
3000
2750
2500
2250
2000
1750
1500
1250
1000
750
500
250
0
Power Dissipation versus Ambient Temperature
(R
JA = 38
ºC/W)
Package
A,
4 la
yer
PCB
(R
JA = 40
ºC/W)
Package
ES,
4 layer
PCB
(R
JA
= 70 ºC/W)
Package
ES,
1 lay
er PCB


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