NOT RECOMMENDED FOR NEW DESIGN

USE

AH1806

AH1802

MICROPOWER, ULTRA-SENSITIVE OMNIPOLAR HALL-EFFECT SENSOR SWITCH

Description

The AH1802 is a high-sensitivity, micropower, omnipolar Hall Effect

switch integrated circuit (IC) designed for portable and battery-powered

equipment, such as cellular phones, PDAs, and portable PCs. Based on

two sensitive Hall Effect plates and a chopper-stabilized architecture,

the AH1802 provides a reliable solution over the whole operating range.

To support portable and battery-powered equipment, the design has

been optimized to operate over the supply range of 2.5V to 5.5V and

consumes only 24µW with a supply of 3V.

The single open-drain output can be switched on with either a north or

south pole of sufficient strength. When the magnetic flux density (B)

perpendicular to the part marking surface is larger than operate point

(Bop), the output is switched on (pulled low). The output is turned off

when B becomes lower than the release point (Brp). The output remains

off when there is no magnetic field.

Pin Assignments

(Top View)

2

OUTPUT

GND

(Top View)

6. OUTPUT 5. NC

4. VDD

3

1

V

DD

1. NC

2. GND

3. NC

SC59

U-DFN2020-6

(Top View)

3. GND

1. V

DD

2. OUTPUT

1. VDD

2. OUTPUT

U-DFN2020-3

X2-DFN2015-3

Features



Omnipolar (North or South Pole) Operation

2.5V to 5.5V Operating Range

High Sensitivity

Single Open-Drain Output

Micropower Operation

Chopper-Stabilized Design Provides



Superior Temperature Stability



Minimal Switch Point Drift



Enhanced Immunity to Stress

Good RF Noise Immunity

-40°C to +85°C Operating Temperature

ESD > 5kV for U-DFN2020-6, U-DFN2020-3 and X2- DFN2015-3

ESD > 6kV for SC59

Low Profile SC59, U-DFN2020-6, U-DFN2020-3 and

X2-DFN2015-3 packages

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

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

Applications



Open and Close Detect for Flip/Slide Cellular Phones

Smart Cover or Dock Detect for Cellular Phones and Tablets

Cover or Display Switch in Portable PCs (such as Ultrabook™)

Display Switch for Portable PCs

On/Off switch for PDAs and Digital Cameras

Contactless Switch in Consumer Products



Notes:

1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.

2. See https://www.diodes.com/quality/lead-free/ 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.

Ultrabook is a trademark of Intel Corporation or its subsidiaries in the U.S. and/or other countries.

AH1802

Document number: DS31170 Rev. 10 - 3

1 of 11

www.diodes.com

April 2018

AH1802

Typical Applications Circuit

2.5~5.5V

R

L

C

AH1802

GND

Output

Pin Descriptions

Package: SC59

Pin Number

1

2

3

Pin Name

V

DD

OUTPUT

GND

Function

Power Supply Input

Output Pin

Ground Pin

Package: U-DFN2020-3 and X2-DFN2015-3

Pin Number

1

2

3

Pin Name

V

DD

OUTPUT

GND

Power Supply Input

Output Pin

Ground Pin

Function

Package: U-DFN2020-6 and X2-DFN2015-3

Pin Number

1

2

3

4

5

6

Note:

Pin Name

NC

GND

NC

V

DD

NC

OUTPUT

No Connection (Note 4)

Ground Pin

No Connection (Note 4)

Power Supply Input

No Connection (Note 4)

Output Pin

Function

4. NC is

No Connection—recommendation

is to connect the NC pin to ground externally.

Functional Block Diagram

V

DD

Sleep/Awake Logic

and Power Switch

Hall

Plate

Offset

Cancellation

Amp

Latch

Output

Driver

Controller

OUTPUT

GND

Hall

Plate

Offset

Cancellation

Amp

Latch

AH1802

Document number: DS31170 Rev. 10 - 3

2 of 11

www.diodes.com

April 2018

AH1802

Absolute Maximum Ratings

(Note 6) (@T

A

= +25°C, unless otherwise specified.)

Symbol

V

DD

B

Ts

P

D

T

J

Notes:

Parameter

Supply Voltage (Note 7)

Magnetic Flux Density

Storage Temperature Range

Package Power Dissipation

Maximum Junction Temperature

Values

7

Unlimited

-65 to +150

230

150

Unit

V

C

mW

C

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

DD

of 7V 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

T

A

Parameter

Supply Voltage

Operating Temperature Range

Conditions

Operating

Rating

2.5 to 5.5

-40 to +85

Unit

V

°C

Electrical Characteristics

Symbol

V

OUT

I

OFF

(@ V

DD

= 3V, T

A

= +25°C, unless otherwise specified.)

Conditions

I

OUT

= 1mA

V

OUT

= 5.5V, B < Brp

During ‘Awake’ Period,

T

A

= +25°C, V

DD

= 3V

During ‘Awake’ Period,

T

A

= -40 to +85°C, V

DD

= 2.5 to 5.5V

During ‘Sleep’ Period,

T

A

= +25°C, V

DD

= 3V

During ‘Sleep’ Period,

T

A

= -40 to +85°C, Vdd = 2.5~5.5V

Average Supply Current ,

T

A

= +25°C, V

DD

= 3V

Average Supply Current ,

T

A

= -40 to +85°C, Vdd = 2.5 to 5.5V

Min

—

Typ

0.1

<0.1

3

5

8

300

75

0.1

Max

0.3

1

6

10

18

16

23

—

150

—

Unit

V

µA

mA

µA

kHz

µs

ms

%

Characteristic

Output On Voltage (V

OL

)

Output Leakage Current

I

DD

(awake)

I

DD

(sleep)

Supply Current

I

DD

(avg)

F

C

Tawake

Tperiod

D.C.

Note:

Chopping Frequency

Awake Time

Period

Duty Cycle

For Design Information Only

(Note 8)

—

8. When power is initially turned on, V

DD

must be within its correct operating range (2.5V to 5.5V) to guaranteed the output sampling. The output state is

valid after the second operating cycle (typical 150ms).

Tperiod

Tawake

I

DD

(awake)

Tsleep

Sample and output

latched

I

DD

(avg)

I

DD

(sleep)

0

AH1802

Document number: DS31170 Rev. 10 - 3

3 of 11

www.diodes.com

April 2018

AH1802

Magnetic Characteristics

(Notes 9 & 10) (@ V

DD

= 3V, T

A

= +25°C, unless otherwise specified.)

Symbol

Bops(South Pole to Part Marking Side )

Bopn(North Pole to Part Marking Side)

Brps(South Pole to Part Marking Side)

Brpn(North Pole to Part Marking Side)

Bhy(

Bopx Brpx

)

Notes:

Characteristic

Operate Point

Release Point

Hysteresis

Min

20

-40

10

—

5

Typ

28

-28

20

-20

8

(1mT=10 Gauss)

Max

Unit

40

-20

—

-10

—

Gauss

9. Typical data is at T

A

= +25°C, V

DD

= 3V, and for design information only.

10. The magnetic characteristics may vary with supply voltage, operating temperature, and after soldering.

OUTPUT

V

OH

(off-state) V

DD

(off-state)

V

OH

( Output Voltage )

Turn

on

(on-state)

V

OL

B

hy

Turn

off

Turn

off

B

hy

Turn

on

(on-state)

V

OL

= V

OUT

(ON)

B

opn

B

rpn

0

B

rps

B

ops

( Magnetic Flux Density B )

Performance Characteristics

T

A

(C)

P

D

(mW)

25

230

50

184

60

166

70

147

80

129

85

120

90

110

100

92

110

74

120

55

130

37

140

18

150

0

PD (mW)

300

Power Dissipation Curve

200

100

0

-40

0

25

50

75

85

100

125

150

TA

(

o

C)

AH1802

Document number: DS31170 Rev. 10 - 3

4 of 11

www.diodes.com

April 2018

AH1802

Ordering Information

AH 1802 - XXX G

–

7 - 01

Package

W : SC59

SN : U-DFN2020-6

FJ : U-DFN2020-3

FY4 : X2-DFN2015-3

Part Number

AH1802-WG-7

AH1802-SNG-7

AH1802-FJG-7

AH1802-FJG-7-01 (Note 8)

AH1802-FY4G-7

Note:

Green

Packing

7 : Tape & Reel

Taping orientation

01: 180

o

rotation

Note 11

G : Green

Status

(Note 12 )

NRND

Package

Code

W

SN

FJ

FY4

Packaging

SC59

U-DFN2020-6

U-DFN2020-3

X2-DFN2015-3

Quantity

3000/Tape & Reel

7” Tape and Reel

Part Number Suffix

-7

11. AH1802-FJG-7-01 DFN2020-3 package taping orientation is rotated by 180

°

compared to standard part AH1802-FJG-7. See package orientation

diagrams on pages 9 and 10.

12. NRND = Not Recommended for New Design

Marking Information

(1)

Package Type: SC59

( Top View )

3

XX Y W X

1

2

XX : Identification code

Y : Year 0~9

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

a~z : 27~52 week; z represents

52 and 53 week

X : A~Z : Green

Package

SC59

Identification Code

KC

Part Number

AH1802

(2) Package Type: U-DFN2020-6

( Top View )

XX

YWX

Pin 1 indicator

XX : Identification Code

Y : Year : 0~9

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

a~z : 27~52 week; z represents

52 and 53 week

X : A~Z : Green

Package

U-DFN2020-6

Identification Code

KC

Part Number

AH1802

Document number: DS31170 Rev. 10 - 3

5 of 11

www.diodes.com

April 2018

参数名称	属性值
最大供电电压	5.5 V
最小供电电压	2.5 V
最大工作温度	85 Cel
最小工作温度	-40 Cel
最大磁场范围	4 mT
最小磁场范围	1 mT
加工封装描述	GREEN, SC-59, 3 PIN
无铅	Yes
欧盟RoHS规范	Yes
中国RoHS规范	Yes
状态	ACTIVE
高度	1.21 mm
宽度	1.6 mm
端子涂层	MATTE TIN
安装特点	SURFACE MOUNT
端子类型	SOLDER
工作电流	10 mA
包装类型	RECTANGULAR
长度或直径	3 mm
滞后	0.8000 mT
输出范围	0.30V
输出类型	ANALOG VOLTAGE
传感器类型	HALL EFFECT

	AH1802_10	AH1802	AH1802-FJG-7	AH1802-FJG-7-01
描述	MAGNETIC FIELD SENSOR-HALL EFFECT, 1-4mT, 0.30V, RECTANGULAR, SURFACE MOUNT	MAGNETIC FIELD SENSOR-HALL EFFECT, 1-4mT, 0.30V, RECTANGULAR, SURFACE MOUNT	MAGNETIC FIELD SENSOR-HALL EFFECT, 1-4mT, 0.30V, SQUARE, SURFACE MOUNT	MAGNETIC FIELD SENSOR-HALL EFFECT, 1-4mT, SQUARE, SURFACE MOUNT
最大供电电压	5.5 V	5.5 V	5.5 V	5.5 V
最小供电电压	2.5 V	2.5 V	2.5 V	2.5 V
最大工作温度	85 Cel	85 Cel	85 Cel	85 Cel
最小工作温度	-40 Cel	-40 Cel	-40 Cel	-40 Cel
最大磁场范围	4 mT	4 mT	4 mT	4 mT
最小磁场范围	1 mT	1 mT	1 mT	1 mT
加工封装描述	GREEN, SC-59, 3 PIN	GREEN, SC-59, 3 PIN	2 X 2 MM, GREEN, DFN-3	2 X 2 MM, GREEN, DFN-3
无铅	Yes	Yes	Yes	Yes
欧盟RoHS规范	Yes	Yes	Yes	Yes
状态	ACTIVE	ACTIVE	ACTIVE	ACTIVE
高度	1.21 mm	1.21 mm	0.5000 mm	0.5000 mm
宽度	1.6 mm	1.6 mm	2 mm	2 mm
端子涂层	MATTE TIN	MATTE TIN	NICKEL PALLADIUM GOLD	NICKEL PALLADIUM GOLD
安装特点	SURFACE MOUNT	SURFACE MOUNT	SURFACE MOUNT	SURFACE MOUNT
端子类型	SOLDER	SOLDER	SOLDER	SOLDER
工作电流	10 mA	10 mA	10 mA	10 mA
包装类型	RECTANGULAR	RECTANGULAR	SQUARE	SQUARE
长度或直径	3 mm	3 mm	2 mm	2 mm
滞后	0.8000 mT	0.8000 mT	0.8000 mT	0.8000 mT
输出类型	ANALOG VOLTAGE	ANALOG VOLTAGE	ANALOG VOLTAGE	ANALOG VOLTAGE
传感器类型	HALL EFFECT	HALL EFFECT	HALL EFFECT	HALL EFFECT
中国RoHS规范	Yes	Yes	Yes	-
输出范围	0.30V	0.30V	0.30V	-

AH1802_10

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