AH266 document number: ds30876 rev. 5 - 2 1 of 7 www.diodes.com december 2013 ? diodes incorporated a h266 high voltage hall effect latch description AH266 is an integrated hall sensor with output drivers designed for electronic commutation of brush-less dc motor applications. the device includes an on-chip hall voltage generator for magnetic sensing, a comparator that amplifies the hall voltage, a schmitt trigger to provide switching hysteresis for noise rejection, and complementary darlington open-colle ctor drivers for sinking large current loads. an internal band-gap regulator is used to provide temperature compensated supply voltage for internal circuits and allows a wide operating supply range. if a magnetic flux density (b) is larger than operation point (bop), do will turn on (low) and dob will turn off (high). the output state is latched prior to reaching re lease point (brp). if b< brp, do will turn off and dob will turn on. AH266 is rated for operation over temperature range from -20c to +85c and voltage range from 4v to 28v. the devices are available in low cost die forms or rugged 4 pin sip packages. features ? on-chip hall plate ? operating voltage: 4v to 28v ? output current: 400ma (continuous , +25c) ? reverse protection diode only for chip reverse power connecting (note 1) ? output protection zener breakdown v z = 62v (typ.) ? lead free package: sip-4 ? sip-4: available in ?green? molding compound (no br, sb) ? rohs compliant (note 2) ? lead-free finish; rohs compliant (notes 1 & 2) ? halogen and antimony free. ?green? device (note 3) pin assignments applications ? dual-coil brushless dc motor ? dual-coil brushless dc fan ? revolution counting ? speed measurement notes: 1. eu directive 2002/95/ec (rohs) & 2011/65/eu (roh s 2) compliant. all applicable rohs exemptions applied. 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. typical applications circuit 12 4 3 266 coil 1 coil 2 v cc brush-less dc fan 266 1 24 3 ( top view ) sip-4 ? green
AH266 document number: ds30876 rev. 5 - 2 2 of 7 www.diodes.com december 2013 ? diodes incorporated a h266 pin descriptions functional block diagram 1 reg. hal l plate amp v cc do dob absolute maximum ratings (@t a = +25c, unless otherwise specified.) symbol parameter rating unit v cc supply voltage 28 v v out (off) output ?off ? voltage 28 v i o (con) output ?on? current 400 (note 5) ma i o (hold) 500 ma i o (peak) 700 ma b magnetic flux density unlimited gauss t st storage temperature range -65 to +150 c p d power dissipation (note 6) 550 mw ja thermal resistance junction-to-ambient (sip-4) 227 c/w jc thermal resistance junction- to-case (sip-4) 49 c/w pin name p/i/o pin # description v cc p 1 power supply input do o 2 output pin dob o 3 output pin gnd p 4 ground
AH266 document number: ds30876 rev. 5 - 2 3 of 7 www.diodes.com december 2013 ? diodes incorporated a h266 recommended operating conditions (@t a = +25c, unless otherwise specified.) symbol characteristic conditions min max unit v cc supply voltage operating 4 28 v t a operating ambient temperature (note 7) operating -20 85 c notes: 4. this application circuit can?t protect re verse coil current if power is connecting reverse. 5. i o (con) is 150 ma at +85c. 6. see performance charac teristics for other conditions. 7. shall not exceed p d and safety operation area. electrical characteristics (@t a = +25c, unless otherwise specified.) symbol characteristic conditions min typ. max unit v z output zener breakdown output turn off 54 62 70 v v ce ( sat ) output saturation voltage v cc = 24v, i c = 400ma 1.1 1.5 v i cex output leakage current v ce = 24v, v cc = 24v < 0.1 10 a i cc supply current v cc = 24v, output open 5 10 ma tr output rise time v cc = 24v, rl = 820 ? , cl = 20pf 1.0 5 s tf output falling time v cc = 24v, rl = 820 ? , cl = 20pf 1.0 1.5 s ? t switch time differential v cc = 24v, rl = 820 ? , cl = 20pf 3.0 10 s test circuit 266 cl1 cl2 24v v out 1 (do) v out 2 (dob) rl1 = rl2 = 820 ohm cl1 = cl2 = 20 pf rl2 rl1
AH266 document number: ds30876 rev. 5 - 2 4 of 7 www.diodes.com december 2013 ? diodes incorporated a h266 magnetic characteristics a grade (1mt = 10 gauss) symbol characteristic min typ. max unit bop operation point 10 ? 70 gauss brp release point -70 ? -10 gauss bhy hysteresis ? 80 ? gauss b grade symbol characteristic min typ. max unit bop operation point ? ? 100 gauss brp release point -100 ? ? gauss bhy hysteresis ? 80 ? gauss output voltage in volts output voltage in volts 0 0 magnetic flux density in gauss magnetic flux density in gauss do dob bop bop brp brp b hy turn on turn off b hy turn off turn on v sat v sat operation characteristics ? marking side s b hy v sat v cc v d b rp b op 0 s n (magnetic flux density ) do high low (sip-4l) n (output voltage)
AH266 document number: ds30876 rev. 5 - 2 5 of 7 www.diodes.com december 2013 ? diodes incorporated a h266 performance characteristics t a ( ? c) 25 50 60 70 80 85 90 95 100 p d (mw) 550 440 396 352 308 286 264 242 220 t a ( ? c) 105 110 115 120 125 130 135 140 150 p d (mw) 198 176 154 132 110 88 66 44 0 ordering information device package code packaging (note 8) bulk magnetic characteristics quantity part number suffix AH266k-pg-b-a p sip-4 1000 -b a AH266k-pg-b-b p sip-4 1000 -b b note: 8. for packaging details, go to our website at http://www.diodes.com/p roducts/packages.html marking information 266x part number ( top view ) y ww x x : version : k sip-4l x : internal code : a~z : lead free y : year : 0~9 ww : week : 01~52, " 52" represents 52 and 53 week a~z : green 0 100 200 300 400 500 600 0 15 30 45 60 75 90 105 120 135 150 p d (mw) t a (c) power dissipation curve 85
AH266 document number: ds30876 rev. 5 - 2 6 of 7 www.diodes.com december 2013 ? diodes incorporated a h266 package outline dimensions (all dimensions in mm.) (1) package type: sip-4l a e d j f l 1 b 1 e 1 l c a 4 2 x a 3 2 x a 1 2 x a 2 2 x s b 2 0 . 3 x 4 5 2 x sip-4 dim min max typ a 1.45 1.65 1.55 b1 0.38 0.44 0.40 b2 - - 0.48 c 0.35 0.45 0.40 d 5.12 5.32 5.22 e1 1.24 1.30 1.27 e 3.55 3.75 3.65 f 0.00 0.20 - j 4.10 4.30 4.20 l 14.00 14.60 14.30 l1 1.32 1.52 1.42 s 0.63 0.83 0.73 a1 - 5 3 a2 4 7 5 a3 4 7 5 a4 - 5 3 all dimensions in mm
AH266 document number: ds30876 rev. 5 - 2 7 of 7 www.diodes.com december 2013 ? diodes incorporated a h266 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 any product described herein; neither does diodes incorporated convey any license under its patent or trademark rights, nor the rights of others. any customer or user 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 com ponents 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 ? 2013, diodes incorporated www.diodes.com
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