a3250eua-t Allegro MicroSystems, Inc., a3250eua-t Datasheet - Page 2

• Manufacturer Part Number: a3250eua-t
• Description: Field-programmable, Chopper-stabilized Unipolar Hall-effect Switches
• Manufacturer: Allegro MicroSystems, Inc.

A3250
A3251
Description (continued)
field drops below the magnetic release point, B
the A3251 has the opposite polarity, switching HIGH in a south-
polarity magnetic field that B
field drops below B
The other differences in the devices are the power-on state. The
A3250 powers-on in the HIGH state, while the A3251 powers-on
in the LOW state.
Selection Guide
Absolute Maximum Ratings
A3250LLT-T
A3250LLTTR-T
A3250LUA-T
A3251ELTTR-T
A3251EUA-T
A3251LLTTR-T
A3251LUA-T
1
2
Supply Voltage
Reverse Supply Voltage
Zener Overvoltage
Output Current
Magnetic Flux Density
Operating Ambient Temperature
Maximum Junction Temperature
Storage Temperature
Contact Allegro for additional packing options.
In south polarity magnetic field of sufficient strength.
Part Number
1
2
UA
Pin-out Diagrams
3
Characteristic
and
RP
1
7-in. reel, 1000 pieces/reel
7-in. reel, 1000 pieces/reel
7-in. reel, 1000 pieces/reel
.
Bulk, 500 pieces/bag
Bulk, 500 pieces/bag
Bulk, 500 pieces/bag
Bulk, 500 pieces/bag
LT
2
Packing
OP
, and switching LOW when the
3
1
Terminal List
Symbol
T
V
J
V
I
(max)
Number
T
OUT
V
T
RCC
B
CC
stg
A
Z
1
2
3
RP
. The output of
Field-Programmable, Chopper-Stabilized,
Range E
Range L
SIP through hole
SIP through hole
SIP through hole
Surface mount
Surface mount
Surface mount
Package
Name
VOUT
VCC
GND
Connects power supply to chip
Ground
Device output
Three package styles provide a magnetically optimized package
for most applications. Type LT is a miniature SOT89/TO-243AA
surface mount package that is thermally enhanced with an
exposed ground tab, and type UA is a three-lead ultramini SIP
for through-hole mounting. The packages are lead (Pb) free, with
100% matte tin plated leadframes (suffix, –T).
Notes
Unipolar Hall-Effect Switches
–40 to 150
–40 to 150
–40 to 85
(ºC)
T
A
Power-On Running
Function
High
Low
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
V
OUT
–40 to 150
–65 to 170
Unlimited
–40 to 85
Rating
26.5
–18
165
30
20
High
Low
2
Units
mA
ºC
ºC
ºC
ºC
G
V
V
V
2