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参数资料
| 型号： | A1242LLHLT-I2-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 4/12页 |
| 文件大小： | 297K |
| 描述： | IC LATCH HALL EFFECT SOT-23W |
| 产品培训模块： | Current Sensor |
| 标准包装： | 3,000 |
| 传感范围： | 80G 跳闸，-80G 释放 |
| 类型： | 单极开关 |
| 电源电压： | 3.5 V ~ 24 V |
| 电流 - 电源： | 6.9mA |
| 输出类型： | 数字式，开漏极 |
| 特点： | 稳压电压 |
| 工作温度： | -40°C ~ 150°C |
| 封装/外壳： | SOT-23W |
| 供应商设备封装： | SOT-23W |
| 包装： | 带卷 (TR) |
Two-Wire Chopper-Stabilized Hall Effect Latch
A1242
3
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
DEVICE QUALIFICATION PROGRAM
Contact Allegro for information.
EMC (Electromagnetic Compatibility) PERFORMANCE
Contact Allegro for information.
ELECTRICAL CHARACTERISTICS over full operating voltage and temperature ranges, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min. Typ.
1
Max. Units
Electrical Characteristics
Supply Voltage
2
3
V
CC
Operating, T
J
< 165癈
3.5 24 V
Supply Current
I
CC(L)
-I1, B < B
RP
5
6.9 mA
-I2, B < B
RP
2
5 mA
I
CC(H)
-I1 and -I2, B > B
OP
12 17 mA
Output Slew Rate
4
dI/dt R
S
= 100 ? C
S
= 20 pF, no bypass capacitor
36 mA/約
Chopping Frequency
f
C
200 kHz
Power-On Time
t
PO
V
CC
> V
CC(MIN)
25 約
Power-On State
5
POS t
PO
< t
PO(max)
, dV
CC
/ dt > 25 mV / 約
I
CC(H)
Supply Zener Clamp Voltage
V
Z(supply)
I
CC
= 20 mA; T
A
= 25癈
28
V
Supply Zener Current
6
I
Z(supply)
V
S
= 28 V
20 mA
Reverse Battery Current
I
RCC
V
RCC
= 18 V
2.5 mA
Magnetic Characteristics
7
Operate Point
B
OP
South pole adjacent to branded face of device
5 32 80 G
Release Point
B
RP
North pole adjacent to branded face of device
80 32 5 G
Hysteresis
B
HYS
B
OP
B
RP
40 64 110 G
1
Typical values are at T
A
= 25癈 and V
CC
= 12 V. Performance may vary for individual units, within the specified maximum and mini-
mum limits.
2
Maximum voltage must be adjusted for power dissipation and junction temperature; see Power Derating section.
3
V
CC
represents the generated voltage between the V
CC
pin and the GND pin.
4
The value of dI is the difference between 90% of I
CC(H)
and 10% of I
CC(L)
, and the value of dt is time period between those two
points. The value of dI/dt depends on the value of the bypass capacitor, if one is used, with greater capacitances resulting in lower
rates of change.
5
For t > t
PO(max)
, and B
RP
< B < B
OP
, POS is undefined.
6
Maximum current limit is equal to the maximum I
CCL(max)
+ 3 mA.
7
Magnetic flux density, B, is indicated as a negative value for north-polarity magnetic fields, and as a positive value for south-polarity
magnetic fields. This so-called algebraic convention supports arithmetic comparison of north and south polarity values, where the rela-
tive strength of the field is indicated by the absolute value of B, and the sign indicates the polarity of the field (for example, a 100 G
field and a 100 G field have equivalent strength, but opposite polarity).
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