Datasheet

ManualsBrandsSparkfun Electronics ManualsMagnetic Sensors / CompassHall Effect Sensor

ATS177

SINGLE OUTPUT HALL EFFECT LATCH

ATS177 Rev. 4 1 of 8 OCTOBER 2008

www.diodes.com © Diodes Incorporated

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 Package: SIP-3L

• Lead Free Finish/ RoHS Compliant (Note 1)

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

ATS177 - P L - X - X

Packing

B : Bulk (Note 3)

P : SIP-3L

Package

Lead Free

L : Lead Free

Magnetic

A or B

A : Ammo Box (Note 4)

Characteristics

Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied, see EU Directive 2002/95/EC Annex Notes.

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

Device

Package

Code

Packaging

(Note 2)

Bulk

mmo Box

Magnetic

Characteristics

Quantity

Part

Number

Suffix

Quantity

Part

Number

Suffix

ATS177-PL-A-A P SIP-3L NA NA 4000/Box -A A

ATS177-PL-A-B P SIP-3L NA NA 4000/Box -A B

ATS177-PL-B-A P SIP-3L 1000 -B NA NA A

ATS177-PL-B-B P SIP-3L 1000 -B NA NA B

Summary of content (8 pages)

PAGE 1
ATS177 SINGLE OUTPUT HALL EFFECT LATCH General Description Features • • • • • • • • 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.
PAGE 2
ATS177 SINGLE OUTPUT HALL EFFECT LATCH Pin Assignments (Top view) 3. DO 2. GND 1. Vcc SIP-3L Pin Descriptions Pin name P/I/O Pin # Description Vcc P 1 Positive power supply GND P 2 Ground DO O 3 Digital output Functional Block Diagrams Vcc 1 Regulator Hall plate 23 DO Amp 2 ATS177 Rev. 4 2 of 8 www.diodes.
PAGE 3
ATS177 SINGLE OUTPUT HALL EFFECT LATCH Typical Circuit +12V D1 L1 R1 2K L2 U1 R2 1 VCC OUTPUT 3 Q1 NPN Q2 NPN 3K GND 2 ATS177 + + C1 0.47uF C2 0.
PAGE 4
ATS177 SINGLE OUTPUT HALL EFFECT LATCH Electrical Characteristics Symbol VCE (sat) Icex Icc tr tf Characteristic Output Saturation Voltage Output Leakage Current Supply Current Output Rise Time Output Falling Time (TA = + 25°C) Test Conditions VCC = 14V, Ic = 20mA VCE = 14V, VCC = 14V VCC = 20V, Output Open VCC = 14V, RL = 820Ω, CL = 20pF VCC = 14V, RL = 820Ω, CL = 20pF Min - Typ. 300 <0.1 5 0.3 0.3 Max 700 10 10 1.5 1.
PAGE 5
ATS177 SINGLE OUTPUT HALL EFFECT LATCH Magnetic Characteristics (TA = 25oC) (1mT=10 Gauss) A grade Symbol Parameter Min Typ. Max Unit Bops(south pole to brand side) Brps(south pole to brand side) Operate Point Release Point 5 -70 - 70 -5 Gauss Gauss Bhy( Bopx − Brpx ) Hysteresis - 80 - Gauss Symbol Parameter Min Typ.
PAGE 6
ATS177 SINGLE OUTPUT HALL EFFECT LATCH Performance Characteristics 25 550 105 198 TA (°C) PD (mW) TA (°C) PD (mW) 50 440 110 176 60 396 115 154 70 352 120 132 80 308 125 110 85 286 130 88 90 264 135 66 95 242 140 44 100 220 150 0 P o w e r D is sip a tio n C u rve PD ( m W ) 600 500 400 300 200 100 0 0 25 50 75 85 10 0 12 5 150 T A (。 C ) Marking Information ( Top View ) 177 Y WW X Y : Year : "7" = 2007 "8" = 2008 WW : Nth Week 01~52 X : Internal code a~z : Lead Free SIP-3L ATS177 Re
PAGE 7
ATS177 SINGLE OUTPUT HALL EFFECT LATCH Package Information (All Dimensions in mm) (1) Package Type: SIP-3L for Bulk Pack 0.51mm NOM 2.00 +/0.10mm 1.15 +/0.10mm BRANDED SURFACE 1 Active Area Depth 2 3 Sensor Location Package Dimension ATS177 Rev. 4 7 of 8 www.diodes.
PAGE 8
ATS177 SINGLE OUTPUT HALL EFFECT LATCH Package Information (Continued) (2) Package Type: SIP-3L for Ammo Pack-only IMPORTANT NOTICE Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to any product herein.