Micropower Ultrasensitive 3D Hall-Effect Switch
A1266
5
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
ELECTRICAL CHARACTERISTICS: Valid over V
DD
= 2.5 to 5 V and full operating temperature range, unless otherwise specied
Characteristics Symbol Test Conditions Min. Typ.
[1]
Max. Unit
Supply Voltage V
DD
Operating, T
J
< 165°C 2.5 3.3 5.5 V
Output Leakage Current I
OUTOFF
B < B
RP
– – 10 µA
Output On Voltage V
OUT(SAT)
I
OUT
= 2 mA, B > B
OP
– 50 500 mV
Awake Time t
awake
– 300 – µs
Mode Cycle Period t
period
– 165 – ms
Chopping Frequency f
C
– 800 – kHz
Supply Current
I
DD(EN)
Chip Awake (Enabled) – – 3.6 mA
I
DD(DIS)
Chip Asleep (Disabled), V
DD
= 2.5 V, T
A
= 25°C – – 15 µA
I
DD(AVG)
V
DD
= 2.5 V, T
A
= 25°C – 7.8 21 µA
V
DD
= 5 V, T
A
= 25°C – 9.5 40 µA
MAGNETIC CHARACTERISTICS: Valid over V
DD
= 2.5 to 5 V and full operating temperature range, unless otherwise specied
Characteristics Symbol Test Conditions Min. Typ. Max. Unit
[2]
Operate Point
[3]
B
OPS
South pole to left, bottom, or branded face side
(see Figure 1)
– 25 40 G
B
OPN
North pole to left, bottom, or branded face side
(see Figure 1)
–40 –25 – G
Release Point
[3]
B
RPS
South pole to left, bottom, or branded face side
(see Figure 1)
5 17.5 – G
B
RPN
North pole to left, bottom, or branded face side
(see Figure 1)
– –17.5 –5 G
Hysteresis
[3]
B
HYS
B
OPS
– B
RPS
, B
OPN
– B
RPN
– 7.5 – G
Figure 1: Three Dimensions of Magnet Orientation.
Applied eld may be either north or south polarity.
[1]
Typical data are at T
A
= 25°C and V
DD
= 3.3 V (unless otherwise noted).
[2]
1 G (gauss) = 0.1 mT (millitesla)
[3]
Applicable to all directions (X, Y, and Z)
