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A6275 데이터시트(PDF) 5 Page - Allegro MicroSystems

부품명 A6275
상세설명  8-Bit Serial Input Constant-Current Latched LED Driver
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제조업체  ALLEGRO [Allegro MicroSystems]
홈페이지  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

A6275 데이터시트(HTML) 5 Page - Allegro MicroSystems

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Serial-Input Constant-Current Latched LED Driver
with Open LED Detection and Dot Correction
A6275
4
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
ELECTRICAL CHARACTERISTICS at TA = +25°C, VDD = 5 V (unless otherwise noted).
Limits
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
Supply Voltage Range
VDD
Operating
4.5
5.0
5.5
V
Undervoltage Lockout
VDD(UV)
VDD = 0
→ 5 V
3.4
4.0
V
Output Current
IO
VCE = 0.7 V, REXT = 250
Ω
64.2
75.5
86.8
mA
(any single output)
VCE = 0.7 V, REXT = 470
Ω
34.1
40.0
45.9
mA
Output Current Matching
∆IO
0.4 V ≤ VCE(A) = VCE(B) ≤ 0.7 V:
(difference between any
REXT = 250 Ω
±1.5
±6.0
%
two outputs at same VCE)
REXT = 470
Ω
±1.5
±6.0
%
Output Leakage Current
ICEX
VOH = 15 V
1.0
5.0
μA
Logic Input Voltage
VIH
0.7VDD
VDD
V
VIL
GND
0.3VDD
V
SERIAL DATA OUT
VOL
IOL = 500 μA
0.4
V
Voltage
VOH
IOH = -500 μA
4.6
V
Input Resistance
RI
ENABLE Input, Pull Up
150
300
600
LATCH Input, Pull Down
100
200
400
Supply Current
IDD(OFF)
REXT = open, VOE = 5 V
0.8
1.4
mA
REXT = 470 Ω, VOE = 5 V
3.5
6.0
8.0
mA
REXT = 250 Ω, VOE = 5 V
6.5
11
15
mA
IDD(ON)
REXT = 470
Ω, VOE = 0 V
5.0
10
14
mA
REXT = 250
Ω, VOE = 0 V
8.0
16
24
mA
Typical Data is at VDD = 5 V and is for design information only.


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