Diodes AH1807 User Manual

Description

The AH1807 is a medium sensitivity micropower Omnipolar Hall

Effect switch IC designed for battery powered consumer to home

appliance and industrial equipment such as smart meter magnetic

tamper detect. Based on two Hall Effect plates and a chopper

stabilized architecture, the AH1807 provides a reliable solution over

the whole operating range. To support battery and low power

applications, 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 package 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 will remain

off when there is no magnetic field.

The AH1807 is available in SC59, SOT553 and SIP-3L.

Features

Pin Assignments

H1807

MEDIUM SENSITIVITY MICROPOWER

OMNIPLOAR HALL-EFFECT SWITCH

TOP View)

SC59

(TOP View)

SOT553

(TOP View)

• Omnipolar (North or South pole) Operation

• Medium Sensitivity

• Single Open Drain Output

• Micropower Operation

• 2.5V to 5.5V Operating Range

• Chopper Stabilized Design Provides:

 Superior Temperature Stability

 Minimal Switch Point Drift

 Enhanced Immunity to Stress

• Good RF Noise immunity

• -40°C to +125°C Operating Temperature

• High ESD

• Small Low Profile SOT553 and Industry Standard SC59 and

SIP-3L Packages

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

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

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.

AH1807

Document number: DS35524 Rev. 3 - 2

www.diodes.com

Applications

• Smart E-Meters

• Tamper Protection Switch

• Door, Lids and Tray Position Switch

• Proximity and Position Switches

• Level Detects

• On/Off Switch Digital Contact-Less Switch in Industrial and

Consumer Products

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SIP-3L

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Typical Applications Circuit

H1807

Note: 4. CIN is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 10nF to 100nF. R

is the pull-up resistor, the recommended resistance is 10kΩ to 100kΩ.

Pin Descriptions

Package: SC59 and SIP-3L

Number

2 GND Ground

3 OUTPUT Output Pin

Package: SOT553

Number

1 NC No Connection (Note 5)

2 GND Ground

3 NC No Connection (Note 5)

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.

Name

Power Supply Input

Function

Functional Block Diagram

AH1807

Document number: DS35524 Rev. 3 - 2

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H1807

Absolute Maximum Ratings (Note 6) (@T

Symbol Characteristics Values Unit

VDD

OUT

DD REV

OUT_REV

OUTPUT

B Magnetic Flux Density Unlimited

Ts Storage Temperature Range -65 to +150

ESD HBM Human Body Model ESD capability 6 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) 7 V

Output Pin Voltage (Note 7) 7 V

Reverse Supply Voltage -0.3 V

Reverse Output Pin Voltage -0.3 V

Output Current (source and sink) 2.5 mA

Package Power Dissipation

Maximum Junction Temperature 150

of 7V is a transient stress rating and is not meant as a functional operating condition. It is not recommended to

Recommended Operating Conditions (@T

Symbol Characteristic Conditions Rating Unit

VDD

OUT_MAX

Electrical Characteristics (@T

Symbol Characteristic Conditions Min Typ Max Unit

OUT_ON

OFF

IDD(awake)

IDD(sleep)

IDD(avg)

Tawake Awake Time (Note 8) — 75 125 µs

Tperiod Period (Note 8) — 75 125 ms

D.C. Duty Cycle — 0.1 — %

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

Supply Voltage Operating 2.5 to 5.5 V

Maximum output pin voltage Operating 5.5 V

Operating Temperature Range Operating -40 to +125

= +25°C, VDD = 3V, unless otherwise specified.)

Output On Voltage (V

Output Leakage Current

Supply Current

Average Supply Current

)

= +25°C, unless otherwise specified.)

SC59 and SOT553 230 mW

SIP-3L 230

= +25°C, unless otherwise specified.)

= 1mA

OUT

= 5.5V, Output off

OUT

During ‘awake’ period,

= +25°C, VDD = 3V

During ‘awake’ period, T

= -40 to +125°C, VDD = 2.5V to 5.5V

During ‘sleep’ period,

= +25°C, VDD = 3V

During ‘sleep’ period, T

= -40 to +125°C, VDD = 2.5V to 5.5V

= 25°C, VDD = 3V

TA = -40 to +125°C, VDD = 2.5V to 5.5V

°C

— 0.1 0.3 V

< 0.1 1 µA

—

3 6 mA

—

— 12 mA

—

5 10 µA

—

— 28 µA

—

8 16 µA

—

- 40 µA

—

AH1807

Document number: DS35524 Rev. 3 - 2

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H1807

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)

Release Point

Brpn (north pole to part marking side)

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

Notes: 9. Typical data is at TA = +25°C, VDD = 3V.

10. Parameters values over 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.

= +25°C, VDD = 2.5V to 5.5V, unless otherwise specified.)

= +25°C

TA = -40°C to +125°C

= +25°C

TA = -40°C to +125°C

= +25°C

TA = -40°C to +125°C

= +25°C

TA = -40°C to +125°C

= +25°C

TA = -40°C to +125°C

60 80 105

50 80 115

-105 -80 -60

-115 -80 -50

50 65 90

40 65 100

-90 -65 -50

-100 -65 -40

10 15 20

5 15 —

(1mT=10 Gauss)

Gauss

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