Chopper-Stabilized Omnipolar Hall Effect Switches
A3245
2
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
Selection Guide
Part Number
Packing*
Mounting
Ambient, T
A
(癈)
A3245ELHLT-T 7-in. reel, 3000 pieces/reel
3-pin SOT23W surface mount
40 to 85
A3245LLHLT-T 7-in. reel, 3000 pieces/reel
3-pin SOT23W surface mount
40 to 150
*Contact Allegro for additional packing options.
patented magnetic-polarity-independence feature makes this device
an excellent replacement for reed switches, with improved ease of
manufacturing, because the A3245 does not require manufacturers
to orient their magnets. These devices allow simple on/off switching
in industrial, consumer, and automotive applications.
The A3245 is rated for operation between the ambient temperatures
40癈 and 85癈 for the E temperature range, and 40癈 to 150癈
for the L temperature range. The small geometries of the BiCMOS
process allow these devices to be provided in ultrasmall packages.
Package LH is an SOT23W, a miniature low-profile surface-
mount package. It is lead (Pb) free, with 100% matte tin plated
leadframe.
Description (continued)
Absolute Maximum Ratings
Characteristic
Symbol
Notes
Rating Units
Supply Voltage
V
CC
28
V
Reverse-Supply Voltage
V
RCC
18
V
Reverse-Supply Current
I
RCC
2
mA
Output Off Voltage
V
OUT
28
V
Output Current
I
OUTSINK
Internally Limited
Magnetic Flux Density
B
Unlimited
G
Operating Ambient Temperature
T
A
Range E
40 to 85
篊
Range L
40 to 150 篊
Maximum Junction Temperature
T
J
(max)
165
篊
Storage Temperature
T
stg
65 to 170 篊
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