Diodes AH337 User Manual

AH337

SINGLE PHASE HALL EFFECT SWITCH

Description

AH337 is an unipolar Hall-Effect sensor for contactless switching applications. The device includes an on-chip Hall voltage generator for magnetic sensing, an amplifier that amplifies the Hall voltage, a Schmitt trigger to provide switching hysteresis for noise rejection, and an open-collector output. The band-gap regulator allows a wide operating voltage range.

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

The AH337 is available in SIP-3L and SC59 packages.

Features

• Unipolar Hall-Effect sensor

• 4.2V to 28V DC operating voltage

• Temperature compensation

• Open drain pre-driver

• 25mA maximum output sink current

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

• SIP-3L and SC59 packages

(SC59 is commonly known as SOT23 in Asia)

• 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.

Pin Assignments

(Top View)

SIP-3L

(Top View)

GND 2.

SC59

Applications

• VCD/DVD Loader, CD/DVD ROM

• Cover Detector

• Speed Measurement

• Home Appliances

• Home Safety

3.

2.

1.

3. OUT

1. Vdd

OUT GND

Vdd

Typical Application Circuit

AH337

Document number: DS31050 Rev. 9 - 2

4.2V ~28V

Vdd

AH337

GND

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R

L

Output

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)

Pin Descriptions

Pin Name P/I/O Pin # Description

Vdd P 1 Positive Power Supply GND P 2 Ground OUT O 3 Output Pin

Functional Block Diagram

V

dd

1

AH337

SINGLE PHASE HALL EFFECT SWITCH

Regulator

OUT

3

Hall

2

plate

Amp

2

GND

Absolute Maximum Ratings (T

Symbol Characteristics Values Unit

Vdd Supply Voltage 30 V

B Magnetic Flux Density Unlimited

VDS Output OFF Voltage 30 V

Id Output “ON” Current Continuous 25 mA

TS Storage Temperature Range -65~+150

T

Maximum Junction Temperature 150

J(MAX

PD Package Power Dissipation

= 25°C)

A

SIP-3L 550

SC59

230 mW

°C °C

mW

Recommended Operating Conditions

Symbol Parameter Conditions Min

Vdd Supply Voltage (Note 2) Operating 4.2 28 V

TA Operating Ambient Temperature Operating -40

Notes: 2. The output of IC will be switched after the supply voltage is over 4.2V, but the magnetic characteristics won't be normal until the

AH337

Document number: DS31050 Rev. 9 - 2

supply is over 4.5V.

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Max

125

Unit

°C

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AH337

)

SINGLE PHASE HALL EFFECT SWITCH

Electrical Characteristics (T

Symbol Characteristic Test Conditions Min Typ. Max Unit

V

Output Saturation Voltage Iout = 10mA, B > Bop - 300 400 mV

DS (SAT

Ioff Output Leakage Current B < Brp Idd Supply Current Output Open - 2 4 mA

Magnetic Characteristics (T

Symbol Parameter Min Typ. Max Unit

Bops(south pole to brand side) Operation Point 90 120 150 Gauss

Brps(south pole to brand side) Release Point 30 60 90 Gauss

Bhy(|Bopx|-|Brpx|) Hysteresis - 60 - Gauss

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

= 25°C, Vdd = 12V)

A

= 25°C, Vdd = 4.5V to 28V, Note 3)

A

< 0.1

10 uA

(1mT = 10 Gauss)

Operating Characteristics

Output

)

S

( off - state )

V

dd

Marking side

N

(SC59)

N

(SIP-3 L )

Marking side

Voltage

Turn off

Output (

V

SAT

B

hy

Brp Bop0

( Magnetic flux density B )

Turn on

( on - state )

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Performance Characteristics

(1) SIP-3L

TA (°C)

PD (mW)

TA (°C)

PD(mW)

(mW )

P

D

25 50 60 70 80 85 90 95 100

550 440 396 352 308 286 264 242 220

105 110 115 120 125 130 135 140 150

198 176 154 132 110 88 66 44 0

600 500 400 300 200

AH337

SINGLE PHASE HALL EFFECT SWITCH

P o wer D is s ip a tio n C u rve

100

0

0 25 50 75 100 125 150

-40

(2) SC59 (commonly known as SOT23 in Asia)

TA (°C)

PD (mW)

25 50 60 70 80 85 90 100 110 120 130 140 150

230 184 166 147 129 120 110 92 74 55 37 18 0

P

(mW)

D

300

200

100

Po we r D is sipa tion C u rve

T

A

(°C )

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0

0 25 50 75 100 125 150

-40

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T

(°C )

A

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Ordering Information

AH337 -

AH337

SINGLE PHASE HALL EFFECT SWITCH

X X -X

Package

P : SIP-3L

W : SC59

Lead Free

L : Lead Free

G : Green (Note 4)

A : Ammo Box (Note 7) B : Bulk (Note 8)

7 : Tape & Reel

Packing

Bulk 7” Tape and Reel Ammo Box

Device

AH337-PL-A P SIP-3L NA NA NA NA 4000/Box -A AH337-PL-B P SIP-3L 1000 -B NA NA NA NA AH337-PG-A P SIP-3L NA NA NA NA 4000/Box -A AH337-PG-B P SIP-3L 1000 -B NA NA NA NA AH337-WL-7 W SC59 NA NA 3000/Tape & Reel -7 NA NA AH337-WG-7 W SC59 NA NA 3000/Tape & Reel -7 NA NA

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

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Marking Information

(1) SIP-3L

(Top View)

Part Number

(2) SC59 (Commonly known as SOT23 in Asia)

337

WW X

Y

AH337

SINGLE PHASE HALL EFFECT SWITCH

: Year : 0~9

Y

WW

: Week : 01~52, "52" represents

52 and 53 week

X

: Internal Code : A~Z : Green

a~z : Lead Free

(Top View)

XX : Identification code

: Year 0~9

Y

: Week : A~Z : 1~26 week;

XX Y W

X

W

a~z : 27~52 week; z represents 52 and 53 week

: A~Z : Green

X

a~z : Lead Free

Part Number Package Identification Code

AH337 SC59 P1

AH337

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Package Outline Dimensions (All Dimensions in mm)

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

0.51mm NOM

AH337

SINGLE PHASE HALL EFFECT SWITCH

2.00 +/-

0.10mm

1.15 +/-

0.10mm

Package Dimension

BRANDED SURFACE

123

Active Area Depth Sensor Location

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Package Outline Dimensions (Continued)

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

AH337

SINGLE PHASE HALL EFFECT SWITCH

(3) SC59 (Commonly known as SOT23 in Asia)

0.35/0.50

1.00/

1.30

0.013/0.10

TOP VIEW

1.90

2.90/3.10

0.95

2.70/

1.50/

1.70

3.00

0.35/0.55

0.10/0.20

AH337

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O

0O/8

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AH337

SINGLE PHASE HALL EFFECT SWITCH

IMPORTANT NOTICE

DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).

Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does Diodes In corporated convey any license under its patent or trademark rights, nor the rights of others. Any Customer or user of this documen t or products described herein in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated website, harmless against all damages.

Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel. Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.

Products described herein may be covered by one or more United States, international or foreign p atents pending. Product names and markings noted herein may also be covered by one or more United States, international or foreign trademarks.

LIFE SUPPORT

Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:

A. Life support devices or systems are devices or systems which:

1. are intended to implant into the body, or

2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in significant injury to the user.

B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected

to cause the failure of the life support device or to affect its safety or effectiveness.

Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support dev ices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems.

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