A3245EUA データシートの表示（PDF） - Allegro MicroSystems

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A3245EUA

Chopper-Stabilized Omnipolar Hall-Effect Switches

Allegro MicroSystems 

A3245

Chopper-Stabilized Omnipolar Hall Effect Switches

OPERATING CHARACTERISTICS valid over full operating voltage and ambient temperature ranges, unless otherwise noted

Characteristic

Symbol

Test Conditions

Min. Typ. Max. Units

Electrical Characteristics

Supply Voltage1

Output Leakage Current

Output On Voltage

Output Current Limit

Power-On Time

Chopping Frequency

Output Rise Time2

Output Fall Time2

Supply Current

Reverse Battery Current

VCC

IOUTOFF

VOUT(SAT)

IOM

tPO

fc

tr

tf

ICCON

ICCOFF

IRCC

Operating, TJ < 165°C

VOUT = 24 V, B < BRP

IOUT = 20 mA, B > BOP

B > BOP

VCC > VCC(MIN)

RLOAD = 820 Ω, CS = 20 pF

RLOAD = 820 Ω, CS = 20 pF

B > BOP

B < BRP

VRCC = –18 V

3.6

–

24

V

–

–

10

μA

–

–

500 mV

30

–

60 mA

–

–

50

μs

–

200

–

kHz

–

–

1

μs

–

–

1

μs

–

1.5 3.5 mA

–

1.5 3.5 mA

–

–

–2 mA

Supply Zener Clamp Voltage

VZSupply ICC = 6.5 mA; TA = 25°C

28

–

–

V

Supply Zener Current3

Magnetic Characteristics4

IZSupply

VS = 28 V

–

–

6.5 mA

Operate Point

BOPS

BOPN

South pole adjacent to branded face of device

North pole adjacent to branded face of device

15

38

55

G

–55 –38 –15

G

Release Point

BRPS

BRPN

South pole adjacent to branded face of device

North pole adjacent to branded face of device

5

20

50

G

–50 –20 –5

G

Hysteresis

BHYS

|BOPX – BRPX|

5

18

30

G

1 Maximum voltage must be adjusted for power dissipation and junction temperature, see Power Derating section.

2 CS = oscilloscope probe capacitance.

3 Maximum current limit is equal to the maximum ICC(MAX) + 3 mA.

4 Magnetic flux density, B, is indicated as a negative value for north-polarity magnetic fields, and as a positive value for south-polarity magnetic fields.

This so-called algebraic convention supports arithmetic comparison of north and south polarity values, where the relative strength of the field is indicated

by the absolute value of B, and the sign indicates the polarity of the field (for example, a –100 G field and a 100 G field have equivalent strength, but

opposite polarity).

DEVICE QUALIFICATION PROGRAM

Contact Allegro for information.

EMC (Electromagnetic Compatibility) REQUIREMENTS

Contact Allegro for information.

Allegro MicroSystems, Inc.

3

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

www.allegromicro.com

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