ATS177

SINGLE OUTPUT HALL EFFECT LATCH

ATS177 Rev. 1

1 of 8

JANUARY 2007

www.diodes.com

Lead-free

•

3.5V to 20V DC operation voltage

•

Temperature compensation

•

Wide operating voltage range

•

Open-Collector pre-driver

•

25mA maximum sinking output current.

•

Reverse polarity protection

•

Lead Free Finish/RoHS Compliant for Lead Free

products (Note 1)

•

Package: SIP-3L

ATS177 is an integrated Hall effect latched sensor designed for

electronic commutation of brush-less DC motor applications. The

device includes an on-chip Hall voltage generator for magnetic

sensing, a comparator that amplifies the Hall voltage, and a

schmitt trigger to provide switching hysteresis for noise rejection,

and open-collector output. An internal bandgap regulator is used

to provide temperature compensated supply voltage for internal

circuits and allows a wide operating supply range.

If a magnetic flux density larger than threshold Bop, DO is turned

on(low). The output state is held until a magnetic flux density

reversal falls below Brp causing DO to be turned off (high).

Applications

•

Brush-less DC Motor

•

Brush-less DC Fan

•

Revolution counting

•

Speed measurement

Note:

1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7.

Note:

2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at

http://www.diodes.com/datasheets/ap02001.pdf.

3. Bulk is for SIP-3L Straight Lead.

4. Ammo Box is for SIP-3L Spread Lead.

Features

General Description

Ordering Information

Tube/Bulk

7” Tape and Reel

Ammo Box

Device

Package

Code

Packaging

(Note 2)

Quantity

Part Number

Suffix

Quantity

Part Number

Suffix

Quantity

Part Number

Suffix

ATS177-P

P

SIP-3L

1000

-B

NA

NA

4000/Box

-A

ATS177 X X X - X

Packing

-B : Bulk (Note 3)

-A : Ammo Box (Note 4)

P:SIP-3L

Package

Lead

L : Lead Free

Magnetic

Characteristics

A or B

-