A3280(2010) 查看數據表（PDF） - Allegro MicroSystems
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A3280 Datasheet PDF : 13 Pages
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A3280, A3281
and A3283
Chopper-Stabilized, Precision
Hall-Effect Latches
ELECTRICAL CHARACTERISTICS over operating temperature range.
Characteristic
Symbol
Test Conditions
Min.
Supply Voltage Range
VCC
Operating, TJ < 170°C1
4.2
Output Leakage Current
IOFF
VOUT = 24 V, B < BRP
–
Output Saturation Voltage
VOUT(SAT)
IOUT = 20 mA, B > BOP
–
Output Current Limit
IOM
B > BOP
30
Power-On Time
tpo
VCC > 4.2 V
–
Chopping Frequency
fC
–
Output Rise Time
tr
RL = 820 , CL = 20 pF
–
Output Fall Time
tf
RL = 820 , CL = 20 pF
–
Supply Current
ICC
B < BRP, VCC = 12 V
–
B > BOP, VCC = 12 V
–
Reverse Battery Current
ICC
VRCC = -30 V
–
Zener Voltage
VZ + VD
ICC = 15 mA, TA = 25°C
28
Zener Impedance
zz + zD
ICC = 15 mA, TA = 25°C
–
NOTES:
1. Maximum voltage must be adjusted for power dissipation and junction temperature.
2. BOP = operate point (output turns on); BRP = release point (output turns off).
3. Typical Data is at TA = +25°C and VCC = 12 V and is for design information only.
Limits
Typ. Max.
–
24
–
10
185
500
–
60
–
50
340
–
0.2
2.0
0.1
2.0
3.0
8.0
4.0
8.0
–
-5.0
32
37
50
–
Units
V
μA
mV
mA
μs
kHz
μs
μs
mA
mA
mA
V
MAGNETIC CHARACTERISTICS over operating voltage range.
Part Numbers1
A3280
A3281
A3283
Characteristic
Test Conditions
Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Units
Operate Point, BOP at TA = +25°C and TA = max.
5.0 22 40 15 50 90 100 150 180
G
at TA = -40°C
5.0 – 40 15 – 90 100 – 200
G
Release Point, BRP at TA = +25°C and TA = max.
-40 -23 -5.0 -90 -50 -15 -180 -150 -100
G
at TA = -40°C
-40 – -5.0 -90 – -15 -200 – -100
G
Hysteresis, Bhys
at TA = +25°C and TA = max.
10 45 80 30 100 180 – 300 360
G
(BOP - BRP)
NOTES:
at TA = -40°C
–
– 80
–
– 180 –
– 360
G
1. Complete part number includes a suffix to identify operating temperature range (E or L) and package type (LH, LT, or UA).
2. As used here, negative flux densities are defined as less than zero (algebraic convention) and -50 G is less than +10 G.
3. Typical Data is at TA = +25°C and VCC = 12 V and is for design information only.
4. 1 gauss (G) is exactly equal to 0.1 millitesla (mT).
Allegro MicroSystems, Inc.
4
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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