Diodes AH1893 User Manual

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Description

The AH1893 is a high sensitivity micropower Omnipolar Hall effect switch IC with internal pull up and pull down capability. Designed for portable and battery powered equipment such as cellular phones and portable PCs to home appliances and industrial applications, the average supply current is only 4.3µA at 1.85V. To support potable equipment the AH1893 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 AH1893 is available in small low profile X1-DFN1216-4 and SOT553 packages.

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).

Features

NEW PRODUCT

 Omnipolar Operation (North or South pole)  Supply Voltage of 1.6V to 3.6V  High Sensitivity  Micropower Operation  Chopper Stabilized Design Provides

 Superior Temperature Stability  Minimal Switch Point Drift  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 SOT553 and X1-DFN1216-4 Packages  Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)  Halogen and Antimony Free. “Green” Device (Note 3)

HIGH SENSITIVITY MICROPOWER

OMNIPOLAR HALL-EFFECT SWITCH

Pin Assignments

(Top View)

X1-DFN1216-4

(Top View)

SOT553

Applications

 Open and Close Detect for Cellular Phones  Holster or Cover Detect for Cellular Phones and Tablet PCs  Cover or Display Switch in Portable PCs  Digital Still, Video Cameras and Handheld Gaming Consoles  Door, Lids and Tray Position Switches  Level, Proximity and Position Switches  Contact-Less Switches in Home Appliances and Industrial

Applications

H1893

Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

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

Note: 4. C

AH1893

Document number: DS35740 Rev. 1 - 2

is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 100nF typical.

IN

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Pin Descriptions

Package: X1-DFN1216-4

Pin Number Pin Name Function

1 OUTPUT Output Pin 2 3 NC No Connection (Note 5) 4 GND Ground Pin

Package: SOT553

Pin Number Pin Name Function

1 2 NC No Connection (Note 5) 3 NC No Connection (Note 5) 4 GND Ground 5 OUTPUT Output

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

NEW PRODUCT

Functional Block Diagram

V

DD

V

DD

Power Supply Input

H1893

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H1893

Absolute Maximum Ratings (Note 6) (@T

Symbol Parameter Rating Unit

VDD

V

DD_REV

I

OUTPUT

B Magnetic Flux Density Unlimited PD Ts Storage Temperature Range -65 to +150 °C

TJ

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

Supply Voltage (Note 7) 6 V Reverse Supply Voltage -0.3 V Output current (source and sink) 3 mA

Package Power Dissipation

Maximum Junction Temperature 150 °C

of 6V is a transient stress rating and is not meant as a functional operating condition. It is not recommended to

DD

Recommended Operating Conditions (@T

NEW PRODUCT

Symbol Parameter Conditions Rating Unit

VDD

TA

Electrical Characteristics (@T

Symbol Parameter Conditions Min Typ Max Unit

VOL Output Lo w Voltage (on) I VOH Output High Voltage (off) I Ioff Output Leakage Current V

IDD(awake)

IDD(sleep)

IDD(avg) Tawake Awake Time (Note 8) — 50 100 µs

Tperiod Period (Note 8) — 50 100 ms

D.C. Duty Cycle — 0.1 — %

Note: 8. When power is initially turned on, the operating VDD (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).

Supply Voltage Operating 1.6V to 3.6V V Operating Temperature Range Operating -40 to +85

= +25°C, VDD = 1.85V, unless otherwise specified.)

A

Supply Current

Average Supply Current

= +25°C, unless otherwise specified.)

A

X1-DFN1216-4 230 mW SOT553 230 mW

= +25°C, unless otherwise specified.)

A

= 1mA - 0.1 0.2 V

OUT

= -1mA VDD-0.2 VDD-0.1 — V

OUT

= 3.6V, Output IOff — < 0.1 1 µA

OUT

During ‘Awake’ Period, T

= +25°C, VDD = 3V

A

During ‘Sleep’ Period,

= +25°C, VDD = 3V

T

A

= +25°C, VDD = 1.85V

T

A

TA = +25°C, VDD = 3.6V

—

2.1 — mA

—

2.5 — mA

4.3 8 µA

—

7.2 13 µA

—

C

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Magnetic Characteristics (Note 9 &10) (T

Symbol Characteristics Test Condition Min Typ Max Unit

Bops (south pole to part marking side)

Operation Point

Bopn (north pole to part marking side)

Brps (south pole to part marking side)

Brpn (north pole to part marking side)

Bhy (|Bopx|-|Brpx|) Hysteresis (Note 11)

Notes: 9. Typical data is at TA = +25C, VDD = 1.85V.

10. Maximum and minimum parameters values over the operating temperature range are not tested in production, they are guaranteed by design, process control and characterization. The magnetic characteristics may vary with supply voltage, operating temperature and after soldering.

11. Maximum and minimum hysteresis is guaranteed by design and characterization.

NEW PRODUCT

= +25°C, VDD = 1.85V, unless otherwise specified)

A

T

= +25C

A

TA = -40°C to +85C

T

= +25C

A

TA = -40°C to +85C

T

= +25C

A

Release Point

TA = -40°C to +85C

= +25C

T

A

TA = -40°C to +85C

T

= +25C

A

TA = -40°C to +85C

(1mT=10 Gauss)

16 30 42 14 30 46

-42 -30 -16

-46 -30 -14 10 20 35

9 20 39

-35 -20 -10

-39 -20 -9

5 10 15

- 10 -

Gauss

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Typical Operating Characteristics

60

V

= 1.6V

DD

40

20

0

Gauss (G)

-20

-40

-60

-50-250 255075100

Temperature (°C)

Swit ch Poi nts vs Temperat ure

Bops

Brps Bhy

Brpn Bopn

H1893

60

= 1.85V

V

DD

40

20

0

-20

Gauss (G)

-40

-60

-50-250 255075100

Temperature (° C)

Switch Points vs Temperature

Bops Brps

Bhy

Brpn Bopn

NEW PRODUCT

60

VDD= 3.6V

40

20

0

Gau ss (G)

-20

-40

-60

-50 -25 0 25 50 75 100

Bops

Brps Bhy

Brpn Bopn

Temperature (° C)

Switch Points vs Temperature

10

9

(μA)

DD

8 7 6 5 4 3 2 1 0

Average Supply Current I

-50-25 0 255075100

3.6V

1.85V

1.6V

60

= +25°C

T

A

40

20

0

Gauss (G)

-20

-40

-60

1.5 1.8 2.1 2.4 2.7 3 3.3 3.6 3.9

Supply Voltage (V)

Swit ch Point s vs Suppl y Vo lt age

10

TA= +25°C

9

(μA)

8

DD

7 6 5 4 3 2 1

Average Supply Current I

0

1.5 1.8 2.1 2.4 2.7 3 3.3 3.6 3.9

Bops Brps Bhy

Brpn Bopn

Temperature (°C)

A ver age Supply Current vs. Temperature

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Supply Voltage (V)

A ve r age Supply Curr ent vs. Supply Vol tage

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Ordering Information

H1893

Part Number

AH1893-FA-7 FA X1-DFN1216-4 3000/Tape & Reel -7

AH1893-Z-7 Z SOT553 3000/Tape & Reel -7

Marking Information

NEW PRODUCT

(1) Package Type: X1-DFN1216-4

(2) Package Type: SOT553

Package

Code

Part Number Package Identification Code

AH1893-FA-7 X1-DFN1216-4 B3

Packaging

Quantity Part Number Suffix

7” Tape and Reel

AH1893

Document number: DS35740 Rev. 1 - 2

Part Number Package Identification Code

AH1893-Z-7 SOT553 B3

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Package Outline Dimensions (All dimensions in mm.)

Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for latest version. (1) Package Type: X1-DFN1216-4

A

3

1

Seating Plane

2

L

NEW PRODUCT

D

e

Pin #1 ID

︵

E

︶

Z

C'0.2x45°

D

2

Bottom View

E

b

H1893

X1-DFN1216-4

Dim Min Max Typ

A 0.47 0.53 0.50 A1 0.00 0.05 0.02 A3 -- -- 0.13

b 0.15 0.25 0.20

D 1.15 1.25 1.20 D2 0.75 0.95 0.85

E 1.55 1.65 1.60 E2 0.55 0.75 0.65

e - - 0.65

L 0.20 0.30 0.25

Z - - 0.175

All Dimensions in mm

0.57/0.63

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Sensor Location

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

(2) Package Type: SOT553

D

e1

E1/2

E1

e

E/2

E

NEW PRODUCT

R0.1 MAX.

TYP.

F

b (5x)

a

A

°

7

TYP.

c

L (5x)

H1893

SOT553

Dim Min Max Typ

A 0.55 0.62 0.60 b 0.15 0.30 0.20 c 0.10 0.18 0.15 D 1.50 1.70 1.60 E 1.55 1.70 1.60

E1 1.10 1.25 1.20

e 0.50 BSC

e1 1.00 BSC

F 0.00 0.10 –– L 0.10 0.30 0.20 a 6° 8° 7°

All Dimensions in mm

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Sensor Location

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Suggested Pad Layout

Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version.

(1) Package Type: X1-DFN1216-4

X

1

C

Y

2

Y

1

Y

X

NEW PRODUCT

(2) Package Type: SOT553

C2

G

Z

C1

Y

X

X1-DFN1216-4

Dimensions Value

C 0.65 X 0.25

X1 0.90

Y 0.50 Y1 0.70 Y2 2.00

All Dimensions in mm

SOT553

Dimensions Value

Z 2.2 G 1.2 X 0.375

Y 0.5 C1 1.7 C2 0.5

All Dimensions in mm

H1893

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H1893

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 unauthorize d 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. Onl y the English version of this document is the final and determinative format released by Diodes Incorporated.

NEW PRODUCT

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

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.

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2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the

IMPORTANT NOTICE

LIFE SUPPORT

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