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A6280 Datasheet(PDF) 3 Page - Allegro MicroSystems

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

 
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3 Bit Constant Current LED Driver with PWM Control
A6280
3
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
Terminal List Table
Name
Number
Description
A Package
ES Package
OUT1
1
11
Sinking output terminal
OUT0
2
12
Sinking output terminal
SDO
3
13
Buffered serial data output after shift registers
LO
4
14
Buffered latch output
OEO
5
15
Buffered output enable output
CO
6
16
Buffered clock output
REXT
7
1
An external resistor at this terminal establishes overall output current
VREG
8
2
Regulator decoupling
LGND
9
3
Logic ground
VIN
10
4
Chip power supply voltage
CI
11
5
Serial and PWM clock input
OEI
12
6
Output enable input; when low (active), the output drivers are enabled;
when high (inactive), all output drivers are turned off (blanked)
LI
13
7
Latch input terminal; serial data is latched with high-level input
SDI
14
8
Serial data input to shift registers
OUT2
15
9
Sinking output terminal
PGND
16
10
Power ground
Pin-out Drawings
Package A
Package ES
OUT2
OUT1
OUT0
Regulator
Current
Regulator 0
Current
Regulator 1
Current
Regulator 2
Shift Registers
Latched Registers
LI
SDI
REXT
REXT
LGND
PGND
CI
LO
SDO
CO
OEO
OEI
VIN
VREG
Functional Block Diagram
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
PGND
OUT2
SDI
LI
OEI
CI
VIN
LGND
OUT1
OUT0
SDO
LO
OEO
CO
REXT
VREG
12
11
10
9
1
2
3
4
OUT0
OUT1
PGND
OUT2
REXT
VREG
LGND
VIN


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