AH1804 MICROPOWER OMNIPOLAR HALL EFFECT SENSORSWITCH Description Pin Assignments ( Top View ) The AH1804 is a micropower Omnipolar Hall effect switch IC with a single output driver with internal pull up and pull down GND NC 4 3 capability. Designed for portable and battery powered equipment such as cellular phones and portable PCs the average supply current is only 12µA at 3.3V. To support T battery powered equipment the AH1804 can operate over the C 1 2 U supply range of 2.5V to 3.6V and uses a hibernating clocking VDD Output D system to minimize the power consumption. DFN1216-4 O R The output is activated with either a north or south pole of P (Top View) sufficient strength. When the magnetic flux density (B) is W larger than operate point (Bop), the output will be turned on 3. Output E N (pulled low) and held until B is lower than release point (Brp). GND 2. 1 . V DD The AH1804 is available in SC59 and small low profile DFN1216-4 packages. SC59 Features Applications • Omnipolar operation (North or South pole) • Low supply voltage 2.5V to 3.6V • Cover switch in clam-shell and slide cellular phones • Micropower operation • Cover switch in portable PC’s, Tablets and PDA • No external pull up resistors required • Display screen open/close detect in Digital • Chopper stabilized design camcorders o Superior temperature stability • Contact-less switch in portable battery powered o Extremely Low Switch-Point Drift consumer and industrial products o Insensitive to Physical Stress • Good RF noise immunity • -40°C to 85°C operating temperature • Small low profile DFN1216-4 and SC59 packages • ESD (HBM) ＞ 5KV • “Green” Molding Compound Typical Application Circuit V DD 2.5V to 3.6V Cin Output AH1804 GND Note: Cin is for power stabilization and to strengthen the noise immunity, C = 100nF or higher must be used. AH1804 1 of 9 September 2011 Document number: DS35314 Rev. 2 - 2 www.diodes.com © Diodes Incorporated

AH1804 MICROPOWER OMNIPOLAR HALL EFFECT SENSORSWITCH Pin Descriptions Pin Name P/I/O Description VDD P/I Power Supply Input GND P/I Ground Output O Output Pin NC NC No Connection (Note 1) T C Notes: 1. NC is “No Connection” which is not connected internally. This pin can be left open or tied to ground. U D Functional Block Diagram O R P V DD W E N Sleep/Awake Logic and Power Switch Hall C Plate a nO cellaffse Amp Latch tiot n Output Driver Output Controller Hall C Plate anO GND c ellaffse Amp Latch tiot n AH1804 2 of 9 September 2011 Document number: DS35314 Rev. 2 - 2 www.diodes.com © Diodes Incorporated

AH1804 MICROPOWER OMNIPOLAR HALL EFFECT SENSORSWITCH Absolute Maximum Ratings (T = 25°C, Note 2) A Symbol Characteristics Values Unit VDD Supply voltage (Note 3) 5.0 V VDD rev Reverse supply voltage -0.3 V B Magnetic flux density Unlimited Ts Storage Temperature Range -65 to +150 °C T C DFN1216-4 230 U PD Package Power Dissipation SC59 270 mW D O TJ Maximum Junction Temperature 150 °C R Notes: 2. Stresses greater than the 'Absolute Maximum Ratings' specified above, may cause permanent damage to the device. These are stress ratings P 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 W 3. The absolute maximum of 5V is a transient stress rating and is not meant as functional operating conditions. It is not recommended to operate the device at the absolute maximum rated conditions for any period of time. E N Recommended Operating Conditions (T = 25°C) A Symbol Characteristics Conditions Rating Unit VDD Supply Voltage CIN =0.1µF (Note 4) 2.5 to 3.6 V TA Operating Temperature Range Operating -40 to +85 °C Notes: 4. Decoupling capacitor CIN = 100nF or higher must be used for full 2.5V to 3.6V supply range. Electrical Characteristics (T = 25°C, V = 3.3V, unless otherwise specified) A DD Symbol Characteristics Conditions Min Typ. Max Unit VOL Output Low Voltage (on) IOUT = 1mA ⎯ 0.1 0.2 V VOH Output High Voltage (off) IOUT = -1mA VDD-0.2 VDD-0.1 ⎯⎯ V Idd(en) Chip enable ⎯ 4 ⎯ mA Idd(dis) Supply current Chip disable ⎯ 8 ⎯ µA Idd(avg) Average supply current, ⎯ 12 ⎯ µA Tawake Awake Time (Note 5) ⎯ 50 100 µs Tperiod Period (Note 5) ⎯ 50 100 ms D.C. Duty Cycle ⎯ 0.1 ⎯ % Notes: 5. When power is initially on, the operating VDD (2.5V to 3.6V) must be applied to be guaranteed for the output sampling. The output state is valid after the second operating phase (typical 100ms). AH1804 3 of 9 September 2011 Document number: DS35314 Rev. 2 - 2 www.diodes.com © Diodes Incorporated

AH1804 MICROPOWER OMNIPOLAR HALL EFFECT SENSORSWITCH Magnetic Characteristics (T = 25°C, V = 3.3V, Note 6) A DD (1mT=10 Gauss) Symbol Characteristics Min Typ. Max Unit Bops(south pole to brand side) 20 40 60 Operation Point Bopn(north pole to brand side) -60 -40 -20 Brps(south pole to brand side) 15 32 - Gauss Release Point Brpn(north pole to brand side) - -32 -15 T C Bhy (|Bopx|-|Brpx|) Hysteresis 8 - U Notes: 6. The magnetic characteristics may vary with operating temperature and after soldering. D O R P Output Output W E ) ) e e N g g a a t Vcc ( off-state ) t ( off-state ) Vcc ol ol V V t t u u p B p Bhy ut Turn on hy Turn off ut Turn off Turn on O O ( ( ( on-state ) ( on-state ) Vsat Vsat B B 0 0 B B opn rpn rps ops ( Magnetic flux density B ) ( Magnetic flux density B ) AH1804 4 of 9 September 2011 Document number: DS35314 Rev. 2 - 2 www.diodes.com © Diodes Incorporated

AH1804 MICROPOWER OMNIPOLAR HALL EFFECT SENSORSWITCH Typical Characteristics Typical Switch Point Bop and Brp vs. Temperature Typical Switch Points Bop and Brp vs. Supply Voltage T C U D O R P W E N Average Supply Current vs. Temperature Average Supply Current vs. Supply Voltage AH1804 5 of 9 September 2011 Document number: DS35314 Rev. 2 - 2 www.diodes.com © Diodes Incorporated

AH1804 MICROPOWER OMNIPOLAR HALL EFFECT SENSORSWITCH Ordering Information AH1804 - XX - 7 X Magentic Package Packing Characteristics T C FA : DFN1216-4 7 : Tape & Reel - Blank : Option 1 U W : SC59 (Note 7) D O R 7” Tape and Reel Magentic P Device Package Packaging Characteristics (Note 8) Code (Note 9) Quantity Part Number Suffix W (Note 7) E AH1804-FA-7 FA DFN1216-4 3000/Tape & Reel -7 -Blank N AH1804-W-7 W SC59 3000/Tape & Reel -7 -Blank Notes: 7. Please refer the Magnetic Characteristics table. 8. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html. 9. 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 Marking Information (1) DFN1216-4 ( Top View ) Pin 1 indicator XX : Identification Code XX Y : Year : 0~9 YWX W : Week : A~Z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week X : Internal code Part Number Package Identification Code AH1804-FA-7 DFN1216-4 KJ (2) SC59 (commonly known as SOT23 in Asia) ( Top View ) XX : Identification code Y : Year 0 to 9 W : Week : A to Z : 1 to 26 week; XX Y W X a to z : 27 to 52 week; z represents 52 and 53 week X : Internal code Part Number Package Identification Code AH1804-W-7 SC59 WJ AH1804 6 of 9 September 2011 Document number: DS35314 Rev. 2 - 2 www.diodes.com © Diodes Incorporated

AH1804 MICROPOWER OMNIPOLAR HALL EFFECT SENSORSWITCH Package Outline Dimensions (All Dimensions in mm) (1) Package type: DFN1216-4 p. Top Mark y T T 0.10 C 0.47/0.53 0/0.05 0.13 Seating Plane C Side View U 4x 0.08 C C 0.65Typ. A D 5 O 0.2 R X- P 2 1.15/1.25 A W B Pin#1 0.65Typ. 4x) CL 0.8 1.40 E 35( N 0. C0.2 Hall sensor CL 5 5 1.55/1.6 0.55/0.7 2/0.3(4x) 01..205(4x) 0.75/0.95 0. Top View 2X- 0.25 B Land Pattern Recommendation (Unit:mm) 0.175(4x) 0.15/0.25 (4x) 0.10 C A B Bottom View (2) Package Type: SC59 (commonly known as SOT23 in Asia) AH1804 7 of 9 September 2011 Document number: DS35314 Rev. 2 - 2 www.diodes.com © Diodes Incorporated

AH1804 MICROPOWER OMNIPOLAR HALL EFFECT SENSORSWITCH Taping Orientation (Note 10) DFN1216-4 T C U D O R P W E N Notes: 10. The taping orientation of the other package type can be found on our website at http://www.diodes.com/datasheets/ap02007.pdf. AH1804 8 of 9 September 2011 Document number: DS35314 Rev. 2 - 2 www.diodes.com © Diodes Incorporated

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