A3241 데이터 시트보기 (PDF) - Allegro MicroSystems

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A3241

Chopper-Stabilized Unipolar Hall-Effect Switches

Allegro MicroSystems 

A3241 and A3242

Chopper-Stabilized Unipolar 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

Supply Zener Clamp Voltage

Supply Zener Current3

Magnetic Characteristics4

VCC

IOUTOFF

VOUT(SAT)

IOM

tPO

fc

tr

tf

ICCON

ICCOFF

IRCC

VZSupply

IZSupply

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

ICC = 6.5 mA; TA = 25°C

VS = 28 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

28

–

–

V

–

–

6.5 mA

Operate Point

A3241

BOP

A3242

50

95 135

G

120 150 200

G

Release Point

A3241

BRP

A3242

40

70 110

G

110 125 190

G

Hysteresis

BHYS

A3241

A3242

BOP – BRP

10

25

42

G

10

25

40

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.

A3241-DS, Rev. 2

Allegro MicroSystems, Inc.

3

115 Northeast Cutoff, Box 15036

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

www.allegromicro.com

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