A3245 Просмотр технического описания (PDF) - Allegro MicroSystems

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A3245

Chopper-Stabilized Omnipolar Hall-Effect Switches

Allegro MicroSystems 

A3245

Chopper-Stabilized Omnipolar Hall Effect Switches

Description (continued)

magnetic-polarity-independence feature makes this device an

excellent replacement for reed switches, with improved ease of

manufacturing, because the A3245 does not require manufacturers

to orient their magnets. These devices allow simple on/off switching

in industrial, consumer, and automotive applications.

The A3245 is rated for operation between the ambient temperatures

–40°C and 85°C for the E temperature range, and –40°C to 150°C

for the L temperature range. The small geometries of the BiCMOS

process allow these devices to be provided in ultrasmall packages.

The package styles available provide magnetically optimized

solutions for most applications. Package LH is an SOT23W, a

miniature low-profile surface-mount package, while package UA

is a three-lead ultramini SIP for through-hole mounting. Each

package is available in a lead (Pb) free version, with 100% matte

tin plated leadframes.

Selection Guide

Part Number Pb-Free1

Packing2

Mounting

Ambient, TA

(°C)

A3245ELHLT-T

A3245EUA-T

Yes 7-in. reel, 3000 pieces/reel

Yes Bulk, 500 pieces/bag

3-pin SOT23W surface mount

3-pin SIP through hole

–40 to 85

A3245LLHLT-T

A3245LUA-T

Yes 7-in. reel, 3000 pieces/reel

Yes Bulk, 500 pieces/bag

3-pin SOT23W surface mount

3-pin SIP through hole

–40 to 150

1Pb-based variants are being phased out of the product line. Certain variants cited in this footnote are in production but have been determined to be NOT

FOR NEW DESIGN. This classification indicates that sale of this device is currently restricted to existing customer applications. The device should not be

purchased for new design applications because obsolescence in the near future is probable. Samples are no longer available. Status change: May 1, 2006.

These variants include: A3245ELHLT, A3245EUA, A3245LLHT, and A3245LUA.

2Contact Allegro for additional packing options.

Absolute Maximum Ratings

Characteristic

Supply Voltage

Reverse-Supply Voltage

Reverse-Supply Current

Output Off Voltage

Output Current

Magnetic Flux Density

Operating Ambient Temperature

Maximum Junction Temperature

Storage Temperature

Symbol

VCC

VRCC

IRCC

VOUT

IOUTSINK

B

TA

TJ(max)

Tstg

Range E

Range L

Notes

Rating

28

–18

–2

28

Internally Limited

Unlimited

–40 to 85

–40 to 150

165

–65 to 170

Units

V

V

mA

V

–

G

ºC

ºC

ºC

ºC

Allegro MicroSystems, Inc.

2

115 Northeast Cutoff, Box 15036

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

www.allegromicro.com

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