Chopper Stabilized, Precision Hall Effect Latches

for Consumer and Industrial Applications

A3291

3

Allegro MicroSystems, Inc.

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

ELECTRICAL CHARACTERISTICS over operating temperature range, unless otherwise noted

Characteristic

Symbol

Test Conditions

Min.

Max

Units

4.2

–

24

V

Output Leakage Current

––

10

μA

Output Saturation Voltage

–

185

500

mV

Output Current Limit

30

–

60

mA

Power-On Time

–

–

50

μs

Chopping Frequency

–

800

–

kHz

Output Rise Time

–

0.2

2.0

μs

Output Fall Time

–

0.1

2.0

μs

Supply Current

–

3.0

8.0

mA

–

4.0

8.0

mA

Reverse Battery Current

–

–

–5.0

mA

Zener Voltage

28

–

–

V

Zener Impedance

–

50

–

Ω

Characteristic

Symbol

Test Conditions

Min.

Max.

Units

A3290

550

G

550

G

A3291

10

100

G

10

100

G

A3290

–50

–5

G

–50

–5

G

A3291

–100

–10

G

–100

–10

G

A3290

10

100

G

–

100

G

A3291

20

200

G

–

200

G