Datasheet ATS177-PL-A-B Specification

ATS177

SINGLE OUTPUT HALL EFFECT LATCH

Description

ATS177 is an integrated Hall-Effect latch sensor designed for

Pin Assignments

(Top View)

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 provides a temperature compensated
supply voltage for internal circuits and allows a wide operating
supply range.

When the magnetic flux density (B) is larger than operate
point (Bop), output is switched on (DO pin is pulled low). The
output state is held on until a magnetic flux density reversal
falls below Brp. When B is less than Brp, the output is
switched off.

The ATS177 is available in SIP-3L package.

Applications

• Brush-less DC Motor

• Brush-less DC Fan

• Revolution counting

• Speed measurement

SIP-3L

Features

• Bipolar Hall-Effect latch sensor

• 3.5V to 20V DC operating voltage

• Temperature compensation

• Open-collector pre-driver

• 25mA maximum output sink current

• Built-in reverse polarity protection

• Operating temperature: -40°C to +125°C

• SIP-3L package

• Green Molding Compound (No Br, Sb) (Note 1)

Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at

http://www.diodes.com/products/lead_free.html.

3.

DO
GND

2.
Vcc

1.

Typical Application Circuit

+12V

U1

1

OUTPUT

VCC

GND

ATS177

2

ATS177

Document number: DS31055 Rev. 6 - 2

D1

+

L1

C1

0.47uF

L2

R2

3K

Q2
NPN

+

C2

0.47uF

R1
2K

3

Q1
NPN

Brush-less DC Fan

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)

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 Diagram

Vcc

1

ATS177

SINGLE OUTPUT HALL EFFECT LATCH

Regulator

Hall

DO

3

plate

2

Amp

GND

2

Absolute Maximum Ratings (T

Symbol Characteristics Rating Unit

VCC Supply Voltage 20 V

V

Reverse VCC Polarity Voltage -20 V

RCC

B Magnetic Flux Density Unlimited

VCE Output OFF Voltage 30 V

PD Package Power Dissipation SIP-3L 550 mW

IC Output “ON” Current Continuous 25 mA

T

Maximum Junction Temperature 150

J(MAX

TS Storage Temperature Range -65~+150

= 25°C)

A

°C
°C

Recommended Operating Conditions

Symbol Characteristic Conditions Min Max Unit

VCC Supply Voltage Operating 3.5 20 V

TA

Notes: 2. Shall not exceed PD and Safety Operation Area.

ATS177

Document number: DS31055 Rev. 6 - 2

Operating Ambient Temperature
(Note 2)

Operating -20 85

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ATS177

SINGLE OUTPUT HALL EFFECT LATCH

Electrical Characteristics (T

Symbol Characteristic Test Conditions Min Typ. Max Unit

VCE (sat) Output Saturation Voltage VCC = 14V, Ic = 20mA - 300 700 mV

Icex Output Leakage Current VCE = 14V, VCC = 14V -

Icc Supply Current VCC = 20V, Output Open - 5 10 mA

tr Output Rise Time VCC = 14V, RL = 820Ω, CL = 20pF - 0.3 1.5 us

tf Output Falling Time VCC = 14V, RL = 820Ω, CL = 20pF - 0.3 1.5 us

= 25°C)

A

<0.1

10 uA

Test Circuit

14V

DO

RL

RL=820 Ohm
CL=20 pF

CL

Test Circuit

ATS177

Document number: DS31055 Rev. 6 - 2

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ATS177

SINGLE OUTPUT HALL EFFECT LATCH

Magnetic Characteristics (T

(1mT=10 Gauss)

A grade

Symbol Parameter Min Typ. Max Unit

Bops(south pole to brand side) Operation Point 5 - 70 Gauss

Brps(south pole to brand side) Release Point -70 - -5 Gauss

Bhy(|Bopx|-|Brpx|) Hysteresis - 80 - Gauss

B grade

Symbol Parameter Min Typ. Max Unit

Bops(south pole to brand side) Operation Point - - 100 Gauss

Brps(south pole to brand side) Release Point -100 - - Gauss

Bhy(|Bopx|-|Brpx|) Hysteresis - 80 - Gauss

Notes: 3. Magnetic characteristics may vary with supply voltage, operating temperature and after soldering.

= 25°C, Note 3)

A

DO

100

50

Flux Density (B)

-50

OFF

RP

Output Voltage in Volts

Vsat

-200 200100-100 0

12
10
8
6
4
2

Magnetic Flux Density in Gauss

Typical Magnetic Switch Point vs. Temperutu re

0

-20 25 80 100

OP

ON

Bop
Brp
Bhys

ATS177

Document number: DS31055 Rev. 6 - 2

Temperature (oC)

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Performance Characteristics

(1) SIP-3L

TA (°C)

PD (mW) 550 440 396 352 308 286 264 242 220

TA (°C)

PD (mW) 198 176 154 132 110 88 66 44 0

P

(mW)

D

600
500
400
300
200
100

25 50 60 70 80 85 90 95 100

105 110 115 120 125 130 135 140 150

ATS177

SINGLE OUTPUT HALL EFFECT LATCH

Power Dissipation Curve

0

0 25 50 75 100 125 150

ATS177

Document number: DS31055 Rev. 6 - 2

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TA (oC)

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Ordering Information

ATS177

SINGLE OUTPUT HALL EFFECT LATCH

Package

P : SIP-3L

ATS177 - X X - X - X

Lead Free

L : Lead Free

G : Green (Note 4)

Packing

A : Ammo Box (Note 7)

B : Bulk (Note 8)

Magnetic

Characteristics

A or B

7 : Tape & Reel

Tube/Bulk 7” Tape and Reel Ammo Box

Device

ATS177-PL-A-A P SIP-3L NA NA NA NA 4000/Box -A A
ATS177-PL-A-B P SIP-3L NA NA NA NA 4000/Box -A B
ATS177-PG-A-A P SIP-3L NA NA NA NA 4000/Box -A A
ATS177-PG-A-B P SIP-3L NA NA NA NA 4000/Box -A B
ATS177-PL-B-A P SIP-3L 1000 -B NA NA NA NA A
ATS177-PL-B-B P SIP-3L 1000 -B NA NA NA NA B
ATS177-PG-B-A P SIP-3L 1000 -B NA NA NA NA A
ATS177-PG-B-B P SIP-3L 1000 -B NA NA NA NA B
Notes: 4. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at

http://www.diodes.com/products/lead_free.html.

5. 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.

6. Reverse taping as shown on Diodes Inc. Surface Mount (SMD) Packaging document AP02007, which can be found on our
website http://www.diodes.com/datasheets/ap02007.pdf.

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

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

Package

Code

Packaging
(Note 5, 6)

Quantity

Part

Number

Suffix

Quantity

Part

Number

Suffix

Quantity

Part

Number

Suffix

Magnetic

Characteristics

Marking Information

(1) SIP-3L

Part Number

ATS177

Document number: DS31055 Rev. 6 - 2

(Top View)

177

WW X

Y

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: Year : 0~9

Y

WW

: Week : 01~52, "52" represents

52 and 53 week

X

: Internal Code : A~Z : Green

a~z : Lead Free

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SINGLE OUTPUT HALL EFFECT LATCH

Package Outline Dimensions (All Dimensions in mm)

(1) Package Type: SIP-3L for Bulk pack

0.51mm
NOM

2.00 +/-

0.10mm

1.15 +/-

0.10mm

ATS177

Package Dimension

BRANDED
SURFACE

123

Active Area Depth Sensor Location

ATS177

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Package Outline Dimensions (Continued)

(2) Package Type: SIP-3L for Ammo pack

ATS177

SINGLE OUTPUT HALL EFFECT LATCH

ATS177

Document number: DS31055 Rev. 6 - 2

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ATS177

SINGLE OUTPUT HALL EFFECT LATCH

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ATS177

Document number: DS31055 Rev. 6 - 2

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