A3250LLT-T Allegro Microsystems Inc, A3250LLT-T Datasheet - Page 13

• Manufacturer Part Number: A3250LLT-T
• Description: IC SW HALL EFFECT UNI SOT-89
• Manufacturer: Allegro Microsystems Inc
• Type: Unipolar Switchr

Specifications of A3250LLT-T

• Sensing Range: 50G
• Voltage - Supply: 4.2 V ~ 24 V
• Current - Supply: 10mA
• Current - Output (max): 20mA
• Output Type: Digital, Open Collector
• Features: Regulated Voltage
• Operating Temperature: -40°C ~ 150°C
• Package / Case: SOT-89-3
• Magnetic Type: Unipolar
• Operating Supply Voltage (min): 4.2V
• Operating Supply Voltage (typ): 5/9/12/15/18V
• Operating Supply Voltage (max): 24V
• Output Current: 20mA
• Mag Sensor Operate Point (g): 50Gs
• Mag Sensor Hysteresis(g): 13Gs
• Package Type: SOT-89
• Pin Count: 3 +Tab
• Mounting: Surface Mount
• Operating Temp Range: -40C to 150C
• Operating Temperature Classification: Automotive
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

A3250
A3251
For additional general application information, visit the Allegro
MicroSystems Web site at www. allegromicro.com.
Typical Application Circuit
It is strongly recommended that an external ceramic bypass
capacitor, C
between the VCC pin and the supply and GND pin to reduce
both external noise and noise generated by the chopper-stabiliza-
tion technique. (The diagram at the right shows C
C
A3250/A3251 are no greater than 5 mm in length. (For program-
ming the device, the capacitor may be further away from the
device, including mounting on the board used for programming
the device.)
The series resistor R
for EMI pulses. (Additional information on EMC is provided
on the Allegro MicroSystems Web site.) R
of approximately 800 mV. This must be taken into consider-
ation when determining the minimum VCC requirement for the
A3250/A3251. The pull-up resistor, R
limit the current through the output transistor; do not exceed the
maximum continuous output current of the device.
BYP
should be installed so that the traces that connect it to the
BYP
, in the range of 0.01 μF to 0.1 μF be connected
and
S
, in combination with C
L
, should be chosen to
S
will have a drop
BYP
creates a filter
Application Information
BYP
Field-Programmable, Chopper-Stabilized,
at 0.1 μF.)
Unipolar Hall-Effect Switches
Typical application circuit
A
V
Maximum separation 5 mm
from C
Supply
100 Ω
R
S
BYP
to device
C
0.1 μF
BYP
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
A
A
A3250/A3251
VCC
GND
VOUT
5V
R
1.2 kΩ
L
12