AH1902_16_技术文档

AH1902

HIGH SENSITIVITY MICROPOWER

OMNIPLOAR HALL-EFFECT SWITCH

Description

Pin Assignments

The AH1902 is a high-sensitivity micropower Omnipolar Hall effect

switch IC with internal pull up and pull down capability. Designed for

portable and battery powered consumer equipment such as cellular

phones and portable PCs to office equipment, home appliances and

industrial applications, the average supply current is only 4.3μA at

1.8V. To support potable equipment the AH1902 can operate over the

supply range of 1.6V to 3.6V and uses a hibernating clocking system

to minimize the power consumption. To minimize PCB space, the

AH1902 is available in small low profile X1-DFN1216-4,

X2-DFN2015-6 and SOT553 packages.

( Top View )

V_DD

NC

1

2

3

6

5

4

OUTPUT

NC

1

2

4

3

V_DD

NC

OUTPUT

GND

NC

X2-DFN2015-6

X1-DFN1216-4

( Top View )

1

5

4

NC

GND

NC

OUTPUT

2

3

The output is activated with either a north or south pole of sufficient

magnetic field strength. When the magnetic flux density (B)

perpendicular to the package is larger than operate point (Bop), the

output will be turned on (pulled low) and held until B is lower than

release point (Brp).

V_DD

SOT553

Applications

Features



Open and Close Detect for Flip/Slide Cellular Phones



Omnipolar Operation (North or South Pole)

Supply Voltage of 1.6V to 3.6V

High Sensitivity

Smart Cover or Dock Detect for Cellular Phones and Tablet PCs

Cover or Display Switch in Portable PCs (eg: Ultrabook)

Digital Still, Video Cameras and Handheld Gaming Consoles

Door, Lids and Tray Position Switches

Micropower Operation

Chopper Stabilized Design Provides:

Level, Proximity and Position Switches

-

Superior Temperature Stability

Minimal Switch Point Drift

Contact-Less Switches in Home Appliances and Industrial

Applications

Enhanced Immunity to Physical Stress



No External Pull-up Resistors Required

Good RF Noise Immunity

-40°C to +85°C Operating Temperature

High ESD capability of 8kV (Human Body Model)

Small Low Profile X1-DFN1216-4, X2-DFN2015-6 and SOT553

Packages



Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

Halogen and Antimony Free. “Green” Device (Note 3)

Notes:

1. EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. All applicable RoHS exemptions applied.

2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"

and Lead-free.

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and

<1000ppm antimony compounds.

Typical Applications Circuit

1.6V to 3.6V

V_DD

OUTPUT

AH1902

C_IN

GND

Note:

4. C_INis for power stabilization and to strengthen the noise immunity, the recommended capacitance is 100nF typical and should be placed as close to

the supply pin as possible.

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www.diodes.com

April 2016

AH1902

Document number: DS36533 Rev. 4 - 2

AH1902

Pin Descriptions

Package: X1-DFN1216-4

Pin Number

Pin Name

Function

1

2

3

4

OUTPUT

GND

NC

Output Pin

Ground Pin

No Connection (Note 5)

Power Supply Input

V_DD

The center exposed pad – No connection internally.

The exposed pad can be left open (unconnected to ) on the PCB layout.

Pad

Package: X2-DFN2015-6

Pin Number

Pin Name

Function

1

2

3

4

5

6

OUTPUT

NC

Output Pin

No Connection (Note 5)

Ground Pin

NC

GND

NC

No Connection (Note 5)

Power Supply Input

V_DD

The center exposed pad – No connection internally.

The exposed pad can be left open (unconnected to) on the PCB layout.

Pad

Package: SOT553

Pin Number

Pin Name

NC

Function

No Connection (Note 5)

Ground Pin

1

2

3

4

5

GND

NC

No Connection (Note 5)

Power Supply Input

V_DD

OUTPUT

Output Pin

Note:

5. NC is “No Connection” pin and is not connected internally. This pin can be left open or tied to ground.

Functional Block Diagram

V_DD

Sleep/Awake Logic

and Power Switch

Hall

Plate

Latch

and

Output

Driver

Controller

Amp

OUTPUT

GND

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www.diodes.com

April 2016

AH1902

Document number: DS36533 Rev. 4 - 2

AH1902

Absolute Maximum Ratings (Note 6) (@T_A= +25°C, unless otherwise specified.)

Symbol

V_DD

Parameter

Rating

Unit

V

Supply Voltage (Note 7)

Reverse Supply Voltage

Output Current (source and sink)

Magnetic Flux Density

6

-0.3

3

V

V_{DD_REV}

I_OUTPUT

B

mA

Unlimited

X1-DFN1216-4 and X2-DFN2015-6

SOT553

230

mW

°C

Package Power Dissipation

P_D

Ts

T_J

Storage Temperature Range

-65 to +150

+150

Maximum Junction Temperature

°C

ESD HBM

Human Body Model (HMB) ESD capability

8

kV

Notes:

6. Stresses greater than the 'Absolute Maximum Ratings' specified above may cause permanent damage to the device. These are stress ratings only;

functional operation of the device at these or any other conditions exceeding those indicated in this specification is not implied. Device reliability may be

affected by exposure to absolute maximum rating conditions for extended periods of time.

7. The absolute maximum V_DDof 6V is a transient stress rating and is not meant as a functional operating condition. It is not recommended to

operate the device at the absolute maximum rated conditions for any period of time.

Recommended Operating Conditions (@T_A= +25°C, unless otherwise specified.)

Symbol

V_DD

Parameter

Supply Voltage

Operating Temperature Range

Conditions

Rating

Unit

V

Operating

1.6V to 3.6V

-40 to +85

T_A

C

Electrical Characteristics (@T_A= +25°C, V_DD= 1.8V, unless otherwise specified.)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

V_OL

Output Low Voltage (on)

I_OUT= 1mA

I_OUT= -1mA

—

0.1

0.2

V

V_OH

Ioff

Output High Voltage (off)

Output Leakage Current

V_DD-0.2

V_DD-0.1

—

V

—

< 0.1

1

µA

V_OUT= 3.6V, Output off

During ‘awake’ period,

T_A= +25°C, V_DD= 3V

During ‘sleep’ period,

T_A= +25°C, V_DD= 3V

—

2.1

2.5

—

mA

µA

I_DD(awake)

I_DD(sleep)

Supply Current

—

4.3

7.2

50

8

µA

µs

ms

%

T_A= +25°C, V_DD= 1.8V

Average Supply Current

I_DD(avg)

13

T_A= +25°C, V_DD= 3.6V

Tawake

Tperiod

D.C.

Awake Time

Period

(Note 8)

—

100

—

50

Duty Cycle

0.1

Note:

8. When power is initially turned on, the operating V_DD(1.6V to 3.6V) must be applied to guaranteed the output sampling.

The output state is valid after the second operating cycle (typical 100ms).

Tperiod

Tawake

I_DD(awake)

Tsleep

Sample and output

latched

I_DD(avg)

I_DD(sleep)

0

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www.diodes.com

April 2016

AH1902

Document number: DS36533 Rev. 4 - 2

AH1902

Magnetic Characteristics (Note 9 &10) (T_A= +25°C, V_DD= 1.8V, unless otherwise specified)

(1mT=10 Gauss)

Symbol

Characteristics

Test Condition

Min

Typ

Max

Unit

—

23

33

47

Bops (south pole to part marking side)

V_DD= 1.6V to 3.6V

T_A= -40°C to +85°C

—

21

-47

-48

12

9

33

-33

23

48

-24

-21

35

38

-12

-9

Operation Point

Bopn (north pole to part marking side)

Brps (south pole to part marking side)

V_DD= 1.6V to 3.6V

T_A= -40°C to +85°C

—

Gauss

V_DD= 1.6V to 3.6V

T_A= -40°C to +85°C

—

23

Release Point

Hysteresis

-35

-38

—

-23

10

Brpn (north pole to part marking side)

Bhy (|Bopx|-|Brpx|)

V_DD= 1.6V to 3.6V

T_A= -40°C to +85°C

—

Notes:

9. Typical data is at T = +25C, V_DD= 1.8V.

A

10. Maximum and minimum parameters values over operating temperature range are not tested in production, they are guaranteed by design,

characterization and process control. The magnetic characteristics may vary with supply voltage, operating temperature and after soldering.

OUTPUT

(off-state)

V_DD

(off-state)

V_OH

Turn

off

Turn

on

Bhy

Turn

off

Bhy

Turn

on

(on-state)

V_OL

(on-state)

V_OL= V_SAT

Bops

Brps

B^opnBrpn

0

( Magnetic Flux Density B )

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www.diodes.com

April 2016

AH1902

Document number: DS36533 Rev. 4 - 2

AH1902

Typical Operating Characteristics

60

50

60

50

V_DD= 1.6V

V_DD= 1.8V

40

30

20

40

30

20

Bops

Brps

Bops

Brps

10

0

10

0

Bhy

-10

-20

-30

-40

-50

-60

-10

-20

-30

-40

-50

-60

Brpn

Bopn

Brpn

Bopn

-50

-25

0

25

50

75

100

-50

-25

0

25

50

75

100

Temperature (°C)

Switch Points vs Temperature

Temperature (°C)

Switch Points vs Temperature

60

50

60

50

T_A= +25 ꢀC

V_DD= 3.6V

40

30

20

40

30

20

Bops

Brps

Bops

Brps

10

0

10

0

Bhy

-10

-20

-30

-40

-50

-60

-10

-20

-30

-40

-50

-60

Brpn

Bopn

Brpn

Bopn

-50

-25

0

25

50

75

100

1.5

1.8

2.1

2.4

2.7

3

3.3

3.6

3.9

Temperature (°C)

Switch Points vs Temperature

Temperature (°C)

Switch Points vs Temperature

10

9

8

7

6

5

4

3

2

1

0

10

9

8

7

6

5

4

3

2

1

0

T_A= +25 ꢀC

3.6V

1.8V

1.6V

-50

-25

0

25

50

75

100

1.5

1.8

2.1

2.4

2.7

3

3.3

3.6

3.9

Supply Voltage (V)

Average Supply Current vs. Supply Voltage

Temperature (ꢀC)

Average Supply Current vs. Temperature

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www.diodes.com

April 2016

AH1902

Document number: DS36533 Rev. 4 - 2

AH1902

Ordering Information

AH1902 - XXX - X

Package

Packing

7 : Tape & Reel

FA : X1-DFN1216-4

FT4 : X2-DFN2015-6

Z : SOT553

7” Tape and Reel

Part Number Suffix

Package

Code

Part Number

Packaging

Quantity

AH1902-FA-7

AH1902-FT4-7

AH1902-Z-7

FA

X1-DFN1216-4

X2-DFN2015-6

SOT553

3,000/Tape & Reel

-7

FT4

Z

Marking Information

(1) Package Type: X1-DFN1216-4 and X2-DFN2015-6

( Top View )

Pin 1 indicator

XX : Identification Code

Y : Year : 0~9

X X

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

a~z : 27~52 week; z represents

52 and 53 week

Y W X

X : Internal code

Part Number

AH1902-FA-7

AH1902-FT4-7

Package

X1-DFN1216-4

X2-DFN2015-6

Identification Code

F2

D2

(2) Package Type: SOT553

( Top View )

XX : Identification Code

Y : Year : 0 to 9

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

a to z : 27~52 week; z represents

52 and 53 week

XX Y W X

X : Internal code

Part Number

AH1902-Z-7

Package

Identification Code

SOT553

D2

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www.diodes.com

April 2016

AH1902

Document number: DS36533 Rev. 4 - 2

AH1902

Package Outline Dimensions (All dimensions in mm.)

Please see http://www.diodes.com/package-outlines.html for the latest version.

(1) Package Type: X1-DFN1216-4

A

A3

A1

Seating Plane

X1-DFN1216-4

Dim Min Max Typ

A

A1

A3

b

D

D2

E

E2

e

L

0.47 0.53 0.50

0.00 0.05 0.02

D

--

0.13

e

0.15 0.25 0.20

1.15 1.25 1.20

0.75 0.95 0.85

1.55 1.65 1.60

0.55 0.75 0.65

(

Pin #1 ID)

C'0.2x45°

-

0.65

0.20 0.30 0.25

0.175

E

E2

L

Z

-

All Dimensions in mm

D2

b

Z

Bottom View

Min/Max

Top View

PART

MARKING

SURFACE

Pin# 1

Die

Hall Sensor

0.77/0.83

Sensor Location

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www.diodes.com

April 2016

AH1902

Document number: DS36533 Rev. 4 - 2

AH1902

Package Outline Dimensions (continued) (All dimensions in mm.)

Please see http://www.diodes.com/package-outlines.html for the latest version.

(2) Package Type: X2-DFN2015-6

A1

A3

A

X2-DFN2015-6

Dim Min Max Typ

Seating Plane

A

A1

A3

b

0.375 0.40 0.390

D

0

0.05 0.02

L

z

-

0.13

0.20 0.30 0.25

1.45 1.575 1.50

D

D2 1.00 1.20 1.10

( Pin #1 ID)

e

-

0.50

E

1.95 2.075 2.00

E

E2

E2 0.70 0.90 0.80

L

Z

D2

0.25 0.35 0.30

-

0.125

0.075

z1

Z1

All Dimensions in mm

e

b

Bottom View

Min/Max

Top View

PART

MARKING

SURFACE

Pin# 1

Die

Hall Sensor

0.97/1.04

Sensor Location

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www.diodes.com

April 2016

AH1902

Document number: DS36533 Rev. 4 - 2

AH1902

Package Outline Dimensions (cont.) (All dimensions in mm.)

Please see http://www.diodes.com/package-outlines.html for the latest version.

(3) Package Type: SOT553

D

e1

SOT553

Dim

A

b

c

D

E

E1

e

e1

F

L

Min

Max

0.62

0.30

0.18

1.70

1.25

0.50 BSC

1.00 BSC

0.10

Typ

0.60

0.20

0.15

1.60

1.20

0.55

0.15

0.10

1.50

1.55

1.10

e

E/2

E1/2

E1

E

L (5x)

c

b (5x)

F

0.00

0.10

6°

––

0.20

7°

0.30

8°

R0.1 MAX.

TYP.

a

All Dimensions in mm

A

TYP.

Min/Max

Pin# 1

PART

MARKING

SURFACE

Die

Hall Sensor

0.75/0.85

Sensor Location

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April 2016

AH1902

Document number: DS36533 Rev. 4 - 2

AH1902

Suggested Pad Layout

Please see http://www.diodes.com/package-outlines.html for the latest version.

(1) Package Type: X1-DFN1216-4

X1

C

X1-DFN1216-4

Dimensions Value

C

X

X1

Y

Y1

Y2

0.65

0.25

0.90

0.50

0.70

2.00

Y2

Y1

Y

All Dimensions in mm

X

(2) Package Type: X2-DFN2015-6

X2

C

X

X2-DFN2015-6

Dimensions

Value

0.500

0.350

1.150

1.350

0.500

0.850

2.150

Y

C

X

X1

X2

Y

Y1

Y2

Y1

Y2

All Dimensions in mm

X1

(3) Package Type: SOT553

C2

SOT553

Dimensions

Value

Z

G

X

2.2

1.2

0.375

0.5

C1

G

Z

Y

C1

C2

1.7

0.5

Y

All Dimensions in mm

X

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April 2016

AH1902

Document number: DS36533 Rev. 4 - 2

AH1902

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 Incorporated convey any license under its patent or

trademark rights, nor the rights of others. Any Customer or user of this document 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 patents pending. Product names and markings

noted herein may also be covered by one or more United States, international or foreign trademarks.

This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is the

final and determinative format released by Diodes Incorporated.

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 devices 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.

www.diodes.com

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April 2016

AH1902

Document number: DS36533 Rev. 4 - 2


型号：	AH1902_16
厂家：	DIODES INCORPORATED
描述：	HIGH SENSITIVITY MICROPOWER OMNIPLOAR HALL-EFFECT SWITCH
文件：	总11页 (文件大小：563K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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