A5358 查看數據表（PDF） - Allegro MicroSystems
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A5358 Datasheet PDF : 13 Pages
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A5358
Photoelectric Smoke Detector
with Interconnect and Timer
DC ELECTRICAL CHARACTERISTICS (continued) at TA = –25°C to 75°C1, VSS = 0 V, in typical application (unless otherwise noted)
Characteristic
Symbol
Test Conditions
Test Pin VDD Min. Typ.2 Max. Units
Line Regulation
ΔVIRED(ΔVDD) Active, VDD = 6 to 12 V
6
–
–35
–
dB
IRED Temperature Coefficient
αIRED
VDD = 6 to 12 V
6
–
–
0.40
–
%/°C
High-Level Output Current
IOH
VDD = Alarm, I/O active,VO = VDD – 2 V
7
9
–4.0
–
–
mA
OFF Leakage Current High
IOZ
VO = VDD
11, 13
12
–
–
1.0
μA
OFF Leakage Current Low
IOZ
VO = VSS
11, 13
12
–
–
–1.0 μA
Low-Battery Alarm Threshold
VDD(th)
5
–
6.9 7.2 7.5
V
Common Mode Voltage
VIC
Any alarm condition
1, 2, 3
-
VDD
–4
–
VDD
–2
V
Smoke Comparator
Reference Voltage
VREF
Any alarm condition
Internal
-
VDD
– 3.7
–
VDD
– 3.3
V
1Limits over the operating temperature range are based on characterization data. Characteristics are production tested at 25°C only.
2Typical values are at 25°C and are given for circuit design information only.
AC ELECTRICAL CHARACTERISTICS at TA = –25°C to 75°C1. VSS = 0 V, in typical application (unless otherwise noted)
Characteristic
Symbol
Test Conditions
Test Pin VDD Min. Typ.2
Oscillator Period
tosc
12
9
9.4 10.5
tled1
No local or remote smoke
11
9
39
–
tled3
Local smoke
11
9
0.60 0.67
LED Pulse Period
tled4
Remote smoke only
No
11
9
–
LED
Pulses
LED Pulse Width
STROBE Pulse Period
tled6
tled7
tw(led)
tst1
tst2
tst3
tst4
tst5
Pushbutton test, induced alarm
Timer mode, no alarm
No local or remote smoke
After 1 of 3 valid samples
After 2 of 3 valid samples and during local
alarm
Remote smoke only
Chamber test or low battery test, no local
alarm
11
9
0.60 0.67
11
9
9.67 10.8
11
9
9.5
–
4
9
9.6
–
4
9
2.42 2.70
4
9
1.21 1.34
4
9
9.67 10.8
4
9
38.9
–
STROBE Pulse Width
tst6
Pushbutton test, induced alarm
tw(st)
4
9
300 336
4
9
9.5
–
Max.
11.5
48
0.74
–
0.74
11.8
11.5
11.9
2.96
1.47
11.8
47.1
370
11.5
Units
ms
s
s
s
s
s
ms
s
s
s
s
s
ms
ms
Continued on the next page…
Allegro MicroSystems, Inc.
5
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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