Standard Two-Wire Field-Programmable

Chopper-Stabilized Unipolar Hall Effect Switch

A1184

2

Allegro MicroSystems, Inc.

115 Northeast Cutoff, Box 15036

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

www.allegromicro.com

Selection Guide

Part Number

Mounting

(°C)

Output

Supply Current at

(mA)

A1184ELHLT-T

Yes

7-in. reel, 3000 pieces/reel

Surface mount

–40 to 85

High

5 to 6.9

A1184EUA-T

Yes

Bulk, 500 pieces/bag

4-pin SIP through hole

A1184LLHLT-T

Yes

7-in. reel, 3000 pieces/reel

Surface mount

–40 to 150

A1184LUA-T

Yes

Bulk, 500 pieces/bag

4-pin SIP through hole

a. Certain variants cited in this footnote are in production but have been determined to be LAST TIME BUY. 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: October 31, 2006. Deadlilne for receipt of LAST TIME BUY ORDERS: April 27, 2007. These variants include: A1184EUA and

A1184LUA.

b. 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:A1184ELHLT and A1184LLHLT.

of two narrowly-specified ranges. Any output current level outside

of these two ranges is a fault condition. The A1184 also features

on-chip transient protection, and a Zener clamp to protect against

overvoltage conditions on the supply line.

a south polarity magnetic field of sufficient strength; and switches

LOW

otherwise, including when there is no significant magnetic

field present.

Both devices are offered in two package styles: LH, a SOT-23W

miniature low-profile package for surface-mount applications, and

UA, a three-lead ultramini Single Inline Package (SIP) for through-

hole mounting. Each package is available in a lead (Pb) free version

(suffix, –T) with 100% matte tin plated leadframe.

Factory-programmed versions are also available. Refer to: A1140,

A1141, A1142, A1143, A1145, and A1146.

Absolute Maximum Ratings

Characteristic

Symbol

Notes

Rating

Units

Supply Voltage

28

V

Reverse Supply Voltage

–18

V

Magnetic Flux Density

B

Unlimited

G

Operating Ambient Temperature

Range E

–40 to 85

ºC

Range L

–40 to 150

ºC

Maximum Junction Temperature

165

ºC

Storage Temperature

–65 to 170

ºC

Description (continued)