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 NEW PRODUCT average supply current is only 12µA at 3.3V. To support battery powered equipment the AH1804 can operate over the 2 1 supply range of 2.5V to 3.6V and uses a hibernating clocking VDD system to minimize the power consumption. Output DFN1216-4 The output is activated with either a north or south pole of (Top View) sufficient strength. When the magnetic flux density (B) is larger than operate point (Bop), the output will be turned on 3. Output (pulled low) and held until B is lower than release point (Brp). GND 2. 1 . VDD The AH1804 is available in SC59 and small low profile SC59 DFN1216-4 packages. Features • • • • • • • • • • Applications Omnipolar operation (North or South pole) Low supply voltage 2.5V to 3.6V Micropower operation No external pull up resistors required Chopper stabilized design o Superior temperature stability o Extremely Low Switch-Point Drift 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 • • • • Cover switch in clam-shell and slide cellular phones Cover switch in portable PC’s, Tablets and PDA Display screen open/close detect in Digital camcorders Contact-less switch in portable battery powered consumer and industrial products Typical Application Circuit VDD 2.5V to 3.6V Cin AH1804 Output GND Note: Cin is for power stabilization and to strengthen the noise immunity, C = 100nF or higher must be used. AH1804 Document number: DS35314 Rev. 2 - 2 1 of 9 www.diodes.com September 2011 © Diodes Incorporated AH1804 MICROPOWER OMNIPOLAR HALL EFFECT SENSORSWITCH NEW PRODUCT Pin Descriptions Pin Name P/I/O VDD P/I Power Supply Input Notes: Description GND P/I Ground Output O Output Pin NC NC No Connection (Note 1) 1. NC is “No Connection” which is not connected internally. This pin can be left open or tied to ground. Functional Block Diagram VDD Sleep/Awake Logic and Power Switch Offset Cancellation Hall Plate Offset Cancellation Hall Plate AH1804 Document number: DS35314 Rev. 2 - 2 Amp Latch Output Driver Controller Output GND Amp Latch 2 of 9 www.diodes.com September 2011 © Diodes Incorporated AH1804 MICROPOWER OMNIPOLAR HALL EFFECT SENSORSWITCH Absolute Maximum Ratings (TA = 25°C, Note 2) Symbol VDD NEW PRODUCT VDD rev B Ts Characteristics Supply voltage (Note 3) Unit V -0.3 V Reverse supply voltage Magnetic flux density Storage Temperature Range PD Package Power Dissipation TJ Maximum Junction Temperature Notes: Values 5.0 Unlimited -65 to +150 DFN1216-4 SC59 °C 230 270 mW 150 °C 2. 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 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. Recommended Operating Conditions (TA = 25°C) Symbol VDD TA Notes: Characteristics Supply Voltage Operating Temperature Range Conditions Rating Unit CIN =0.1µF (Note 4) 2.5 to 3.6 V Operating -40 to +85 °C 4. Decoupling capacitor CIN = 100nF or higher must be used for full 2.5V to 3.6V supply range. Electrical Characteristics (TA = 25°C, VDD = 3.3V, unless otherwise specified) Symbol Characteristics VOL Output Low Voltage (on) VOH Output High Voltage (off) Idd(en) Idd(dis) Tperiod D.C. Notes: Min Typ. Max Unit IOUT = 1mA ⎯ 0.1 0.2 V IOUT = -1mA VDD-0.2 VDD-0.1 ⎯⎯ V Chip enable ⎯ 4 ⎯ mA Chip disable ⎯ 8 ⎯ µA Average supply current, ⎯ 12 ⎯ µA Awake Time (Note 5) ⎯ 50 100 µs Period (Note 5) ⎯ 50 100 ms ⎯ 0.1 ⎯ % Supply current Idd(avg) Tawake Conditions Duty Cycle 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 Document number: DS35314 Rev. 2 - 2 3 of 9 www.diodes.com September 2011 © Diodes Incorporated AH1804 MICROPOWER OMNIPOLAR HALL EFFECT SENSORSWITCH Magnetic Characteristics (TA = 25°C, VDD = 3.3V, Note 6) Symbol Bops(south pole to brand side) Operation Point Bopn(north pole to brand side) Release Point Brpn(north pole to brand side) Bhy (|Bopx|-|Brpx|) Max 20 40 60 -60 -40 -20 15 32 - - -32 -15 8 - Hysteresis Unit Gauss 6. The magnetic characteristics may vary with operating temperature and after soldering. Output Vcc ( off-state ) Turn on ( on-state ) Bhy Turn off Output ( Output Voltage ) ( Output Voltage ) NEW PRODUCT Brps(south pole to brand side) Notes: (1mT=10 Gauss) Min Typ. Characteristics Document number: DS35314 Rev. 2 - 2 Turn off Vsat Vsat Bopn Brpn 0 ( Magnetic flux density B ) AH1804 ( off-state ) Bhy Vcc Turn on ( on-state ) 0 Brps Bops ( Magnetic flux density B ) 4 of 9 www.diodes.com September 2011 © Diodes Incorporated AH1804 MICROPOWER OMNIPOLAR HALL EFFECT SENSORSWITCH Typical Characteristics Typical Switch Points Bop and Brp vs. Supply Voltage Average Supply Current vs. Temperature Average Supply Current vs. Supply Voltage NEW PRODUCT Typical Switch Point Bop and Brp vs. Temperature AH1804 Document number: DS35314 Rev. 2 - 2 5 of 9 www.diodes.com September 2011 © Diodes Incorporated AH1804 MICROPOWER OMNIPOLAR HALL EFFECT SENSORSWITCH Ordering Information AH1804 - XX - 7 X Packing NEW PRODUCT Package 7 : Tape & Reel FA : DFN1216-4 W : SC59 Device (Note 8) AH1804-FA-7 AH1804-W-7 Notes: Magentic Characteristics - Blank : Option 1 (Note 7) 7” Tape and Reel Package Code Packaging (Note 9) Quantity Part Number Suffix FA W DFN1216-4 SC59 3000/Tape & Reel 3000/Tape & Reel -7 -7 Magentic Characteristics (Note 7) -Blank -Blank 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 Y : Year : 0~9 W : Week : A~Z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week X : Internal code XX YWX Part Number Package Identification Code AH1804-FA-7 DFN1216-4 KJ (2) SC59 (commonly known as SOT23 in Asia) ( Top View ) XX Y W X AH1804 Document number: DS35314 Rev. 2 - 2 XX : Identification code Y : Year 0 to 9 W : Week : A to Z : 1 to 26 week; 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 6 of 9 www.diodes.com September 2011 © Diodes Incorporated AH1804 MICROPOWER OMNIPOLAR HALL EFFECT SENSORSWITCH Package Outline Dimensions (All Dimensions in mm) 0/0.05 0.13Typ. (1) Package type: DFN1216-4 NEW PRODUCT Seating Plane Side View 0.08 C C 0.65Typ. Pin#1 A 0.65Typ. CL 0.2/0.3(4x) 0.75/0.95 2X- CL Hall sensor 0.55/0.75 C0.2 1.55/1.65 1.15/1.25 0.35(4x) B 0.8 1.40 2X- 0.25 A 4x 0.47/0.53 Top Mark 0.10 C 0.25(4x) 1.0 Top View Land Pattern Recommendation (Unit:mm) 0.25 B 0.175(4x) Bottom View 0.15/0.25 (4x) 0.10 C A B (2) Package Type: SC59 (commonly known as SOT23 in Asia) AH1804 Document number: DS35314 Rev. 2 - 2 7 of 9 www.diodes.com September 2011 © Diodes Incorporated AH1804 MICROPOWER OMNIPOLAR HALL EFFECT SENSORSWITCH Taping Orientation (Note 10) NEW PRODUCT DFN1216-4 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 Document number: DS35314 Rev. 2 - 2 8 of 9 www.diodes.com September 2011 © Diodes Incorporated AH1804 MICROPOWER OMNIPOLAR HALL EFFECT SENSORSWITCH IMPORTANT NOTICE NEW PRODUCT 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. 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