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A6282 데이터시트 PDF




Allegro MicroSystems에서 제조한 전자 부품 A6282은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

PDF 형식의 A6282 자료 제공

부품번호 A6282 기능
기능 16-Channel Constant-Current LED Driver
제조업체 Allegro MicroSystems
로고 Allegro MicroSystems 로고


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A6282 데이터시트, 핀배열, 회로
A6282
16-Channel Constant-Current LEDDriver
Features and Benefits
16 constant-current outputs, up to 50 mA each
LED output voltage up to 12 V
3.0 to 5.5 V logic supply range
Schmitt trigger inputs for improved noise immunity
Power-On Reset (POR), all register bits = 0
Low-power CMOS logic and latches
High data input rate: 30 MHz
Output current accuracy: between channels < ±3% and
between ICs ±7%, over the full operating temperature
range
Internal UVLO and thermal shutdown (TSD) circuitry
Packages:
24-pin TSSOP
with exposed thermal pad
(Package LP)
Not to scale
24-contact QFN
4 mm × 4 mm × 0.75 mm
(Package ES)
Description
TheA6282 device is designed for LED display applications.This
CMOS device includes an input shift register, accompanying
data latches, and 16 MOS constant current sink drivers.
The CMOS shift registers and latches allow direct interfacing
with microprocessor-based systems. With a 3.3 or 5 V logic
supply, typical serial data input rates can reach up to 30 MHz.
The LED drive current level can be set by a single external
resistor, selected by the application designer. A serial data
output permits cascading of multiple devices in applications
requiring additional drive lines.
The A6282 is available in two 24-terminal packages: QFN
(package ES) and TSSOP (LP), which have an exposed
thermal pad. Both packages are lead (Pb) free with 100% matte
tin leadframe plating.
Applications include the following:
Monocolor, multicolor, or full-color LED display
Monocolor, multicolor, or full-color LED signboard
Display backlighting
Multicolor LED lighting
SDI
Controller
CLK
LE
OE
Typical Application
VLED
10 μF
SDI OUT0
OUT15
SDO
CLK VDD VDD
LE A6282
100 nF
GND
OE
REXT
IC 1
SDI
CLK
LE
OE
10 μF
OUT0
A6282
OUT15 SDO
VDD VDD
100 nF
GND
REXT
IC 2
6282-DS, Rev. 4
Cascaded A6282 devices




A6282 pdf, 반도체, 판매, 대치품
A6282
16-Channel Constant-Current LED Driver
Pin-out Diagrams
Top-down views
SDO
REXT
VDD
GND
SDI
CLK
1
2
3
4
5
6
PAD
18 OUT10
17 OUT9
16 OUT8
15 OUT7
14 OUT6
13 OUT5
ES Package
GND 1
SDI 2
CLK 3
LE 4
OUT0 5
OUT1 6
OUT2 7
OUT3 8
OUT4 9
OUT5 10
OUT6 11
OUT7 12
PAD
24 VDD
23 REXT
22 SDO
21 OE
20 OUT15
19 OUT14
18 OUT13
17 OUT12
16 OUT11
15 OUT10
14 OUT9
13 OUT8
LP Package
Terminal List Table
Name
CLK
GND
LE
Number
ES LP
63
41
74
¯O¯¯E¯ 24 21
OUT0
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
OUT8
OUT9
OUT10
OUT11
OUT12
OUT13
OUT14
OUT15
PAD
REXT
SDI
SDO
VDD
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
2
5
1
3
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
23
2
22
24
Description
Clock; data shift clock input terminal
Logic supply ground and load supply ground
Latch Enable input terminal
Output Enable input terminal, active low (when ¯O¯¯E¯ = high, all OUTx outputs are forced off; when ¯O¯¯E¯ = low,
on/off status of OUTx outputs is controlled by the state of the latches
Constant current outputs
Exposed pad for enhanced thermal dissipation; not connected internally, connect to GND
Reference current terminal; sets output current for all channels
Serial Data In terminal
Serial Data Out terminal
Logic Supply terminal
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
4

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A6282 전자부품, 판매, 대치품
A6282
16-Channel Constant-Current LED Driver
Timing Diagrams
Normal Operation
t wh0
CLK
t su0
t h0
SDI
SDO
LE
t pd0
10%
t r0
90%
50%
t su1
t wh1
t f0
OE
OUTx
(current)
Low = All Outputs Enabled
t pd2
H igh = O utput o n
Low = Output off
Disabling Outputs
OE
OUTx
(current)
t w (OE)
50%
50%
t pd1
t pd1
t f1 t r1
90%
50%
10%
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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