ah1808 document number: ds35655 rev. 4 - 2 1 of 9 www.diodes.com february 2014 ? diodes incorporated a h1808 high sensitivity micropower omnipolar hall-effect switch description the ah1808 is a high sensitivity, micro power omnipolar hall effect switch ic designed for portable and battery powered consumer equipment such as cellular phones, pda?s and portable pc?s to home appliance and industrial applications . based on two sensitive hall effect plates and a chopper stabilized architecture the ah1808 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 24w with a supply of 3v. the single open drain output can 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. features ? omnipolar (north or south pole) operation ? high 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 ? -40c to +85 c operating temperature ? esd (hbm) > 6kv ? small low profile sot553 and industry standard sc59 packages ? totally lead-free & fully rohs compliant (notes 1 & 2) ? halogen and antimony free. ?green? device (note 3) pin assignments top view) sc59 (top view) sot553 applications ? cover switch in clam-shell or slide type cellular phones ? display switch for portable pcs ? on/off switch for pdas and digital cameras ? contact-less switch in consumer products ? smart e-meters ? position, proximity and level de tection contact-less switch in home appliances and industrial applications notes: 1. no purposely added lead. fully eu directiv e 2002/95/ec (rohs) & 2011/6 5/eu (rohs 2) compliant. 2. see http://www.diodes.com/quality/lead_free.html for more in formation about diodes incorporated?s definitions of halogen- a nd 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.
ah1808 document number: ds35655 rev. 4 - 2 2 of 9 www.diodes.com february 2014 ? diodes incorporated a h1808 typical applications circuit note: 4. c in is for power stabilization and to strengthen the noise immunity, the recommended capa citance is 10nf to 100nf. r l is the pull-up resistor, the recommended resistance is 10k ? to 100k ? . pin descriptions package: sc59 pin number pin name function 1 v dd power supply input 2 gnd ground 3 output output package: sot553 pin number pin name function 1 nc no connection (note 5) 2 gnd ground 3 nc no connection (note 5) 4 v dd power supply input 5 output output note: 5. nc is ?no connection? pin and is not con nected internally. this pin can be left open or tied to ground. functional block diagram
ah1808 document number: ds35655 rev. 4 - 2 3 of 9 www.diodes.com february 2014 ? diodes incorporated a h1808 absolute maximum ratings (note 6) (@t a = +25c, unless otherwise specified.) symbol parameter values unit v dd supply voltage (note 7) 7 v v out output pin voltage (note 7) 7 v v dd rev reverse supply voltage -0.3 v v out_rev reverse output pin voltage -0.3 v i output output current (source and sink) 2.5 ma b magnetic flux density unlimited p d package power dissipation sc59 and sot553 230 mw ts storage temperature range -65 to +150 c t j maximum junction temperature +150 c 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 exceedi ng those indicated in this specification is no t 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 = +25c, unless otherwise specified.) symbol characteristic conditions rating unit v dd supply voltage operating 2.5 to 5.5 v v out_max maximum output pin voltage operating 5.5 v t a operating temperature range operating -40 to +85 c electrical characteristics (@t a = +25c, v dd = 3v, unless otherwise specified.) symbol characteristic conditions min typ max unit v out_on output on voltage i out = 1ma ? 0.1 0.3 v ioff output leakage current v out = 5.5v, output off ? < 0.1 1 a i dd (awake) supply current during ?awake? period, t a = +25 c, v dd = 3v ? 3 6 ma during ?awake? period, t a = -40 c to +85 c, v dd = 2.5v to 5.5v ? 3 12 ma i dd (sleep) during ?sleep? period, t a = +25 c, v dd = 3v ? 5 10 a i dd (sleep) during ?sleep? period, t a = -40 c to +85 c, v dd = 2.5v to 5.5v ? ? 28 a i dd (avg) average supply current t a = +25 c, v dd = 3v ? 8 16 a t a = -40 c to +85 c, v dd = 2.5v to 5.5v ? ? 40 a tawake awake time (note 8) ? 75 125 s tperiod period (note 8) ? 75 125 ms d.c. duty cycle ? ? 0.1 ? % note: 8. when power is initially turned on, the operating 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).
ah1808 document number: ds35655 rev. 4 - 2 4 of 9 www.diodes.com february 2014 ? diodes incorporated a h1808 magnetic characteristics (note 9 & 10) (@t a = -40 c to +85 c , v dd = 2.5v to 5.5v unless otherwise specified.) (1mt=10 gauss) symbol characteristic min typ max unit bops (south pole to part marking side) operation point 20 40 60 gauss bopn (north pole to part marking side) -60 -40 -20 brps (south pole to part marking side) release point 10 30 50 brpn (north pole to part marking side) -50 -30 -10 bhy (|bopx|-|brpx|) hysteresis (note 11) 5 10 ? notes: 9. typical data is at t a = +25c, v dd = 3v, and for design information only. 10. maximum and minimum parameters values over the operating te mperature range are not tested in production, they are guarante ed by design, characterization and process control. the magnetic ch aracteristics may vary with supply voltage, operating temperature a nd after soldering. 11. maximum and minimum hysteresis is guaranteed by design and characterization. thermal performance characteristics (1) package type: sc59 and sot553 t a ( c) 25 50 60 70 80 85 90 100 110 120 130 140 150 p d (mw) 230 184 166 147 129 120 110 92 74 55 37 18 0 0 100 200 300 0 25 50 75 100 125 150 pd (mw) t a ( o c) power dissipation curve 85 -40
ah1808 document number: ds35655 rev. 4 - 2 5 of 9 www.diodes.com february 2014 ? diodes incorporated a h1808 ordering information part number package code packaging 7? tape and reel quantity part number suffix AH1808-W-7 w sc59 3000/tape & reel -7 ah1808-z-7 z sot553 3000/tape & reel -7 marking information (1) package type: sc59 part number package identification code ah1808 sc59 j8 (2) package type: sot553 part number package identification code ah1808 sot553 j8
ah1808 document number: ds35655 rev. 4 - 2 6 of 9 www.diodes.com february 2014 ? diodes incorporated a h1808 package outline dimensions (all dimensions in mm.) please see ap02002 at http://www.diodes.com /datasheets/ap02002.pdf for latest version. (1) package type: sc59 sensor location sc59 dim min max typ a 0.35 0.50 0.38 b 1.50 1.70 1.60 c 2.70 3.00 2.80 d - - 0.95 g - - 1.90 h 2.90 3.10 3.00 j 0.013 0.10 0.05 k 1.00 1.30 1.10 l 0.35 0.55 0.40 m 0.10 0.20 0.15 n 0.70 0.80 0.75 0 8 - all dimensions in mm a m j l d b c h k g n
ah1808 document number: ds35655 rev. 4 - 2 7 of 9 www.diodes.com february 2014 ? diodes incorporated a h1808 package outline dimensions (all dimensions in mm.) please see ap02002 at http://www.diodes.com /datasheets/ap02002.pdf for latest version. (1) package type: sot553 0.10/0.18 0.75/0.85 pin# 1 0.45/0.67 hall sensor die 0.22/0.38 c l c l part marking surface min/max sensor location 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 e1/2 e1 d typ. r0.1 max. a a e/2 e b (5x) e e1 l (5x) c f 7 typ.
ah1808 document number: ds35655 rev. 4 - 2 8 of 9 www.diodes.com february 2014 ? diodes incorporated a h1808 suggested pad layout please see ap02001 at http://www.diodes.com/dat asheets/ap02001.pdf for the latest version. (1) package type: sc59 (2) package type: sot553 dimensions value (in mm) z 3.4 x 0.8 y 1.0 c 2.4 e 1.35 dimensions value (in mm) z 2.2 g 1.2 x 0.375 y 0.5 c1 1.7 c2 0.5 x z y c1 c2 c2 g x e y c z
ah1808 document number: ds35655 rev. 4 - 2 9 of 9 www.diodes.com february 2014 ? diodes incorporated a h1808 important notice 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 rese rve the right to make modifications, enhanc ements, improvements, corrections or ot her changes without further notice to this document and any product descri bed herein. diodes incorporated does not assume any liability ari sing out of the application or use of this document or an y product described herein; neither does di odes incorporated convey any license under its patent or trademark rights, nor the rights of others. any customer or us er of this document or products described herein in such applica tions 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 w hatsoever in respect of any products purchased through unauthoriz ed sales channel. should customers purchase or use diodes inco rporated products for any unintended or una uthorized application, customers shall i ndemnify and hold diodes incorporated and its representativ es harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim of personal injury or death a ssociated 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. only the english version of t his document is the final and determinative format released by diodes incorporated. life support diodes incorporated products are specifically not authorized for use as critical component s in life support devices or systems without the express written approval of the chief executive offi cer of diodes incorporated. as used herein: a. life support devices or syst ems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when proper ly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in significant injury to the user. b. a critical component is any component in a life support devic e or system whose failure to perform can be reasonably expect ed 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 ramifi cations of their life support dev ices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-rel ated requirements concerning the ir products and any use of diodes incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or s ystems-related information or support that may be provided by diodes incorporated. further, customers must fully indemnify diodes incorporate d and its representatives against any damages arisi ng out of the use of diodes incorporated pr oducts in such safety-critical, life suppor t devices or systems. copyright ? 2014, diodes incorporated www.diodes.com
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