unisonic technologies co., ltd sk1901 linear integrated circuit www.unisonic.com.tw 1 of 8 copyright ? 2008 unisonic technologies co., ltd qw-r118-005,b hall-effect switch for high-temperature operation ? description sk1901 is a semiconductor integrated circuit utilizing the hall effect. it has been so designed as to operat e in the alternating magnetic field especially at low supply voltage and operation over extended temperature ranges to +125 .this hall ic is suitable for application to various kinds of sensors, contact-less switches, and the like. ? features * wide supply voltage range of 2.5v to 20v *wide temperature operation range of -20 ~+125 *ttl and mos ic are directly drivable by the output *the life is semipermanent because it employs contact-less parts *sip-3 package *pb-free plating product number: sk1901l ? ordering information ordering number pin assignment normal lead free plating package 1 2 3 packing sk1901-ae3-r SK1901L-AE3-R sot-23 o i g tape reel sk1901-g03-k sk1901l-g03-k sip-3 i g o bulk note: pin assignment: i:v cc o:v out g:gnd ?
sk1901 linear integrated circuit unisonic technologies co., ltd 2 of 8 www.unisonic.com.tw qw-r118-005,b marking information sip-3 sot-23 1901 1901 date code l: lead free plating, blank: pb/sn sk ? block diagram amplifier schmidt trigger output stage hall element vcc gnd output regulator
sk1901 linear integrated circuit unisonic technologies co., ltd 3 of 8 www.unisonic.com.tw qw-r118-005,b ? absolute maximum ratings parameter symbol ratings unit supply voltage v cc 2.5v ~ 20v v supply current i cc 10 ma circuit current io 20 ma sip-3 400 mw power dissipation sot-23 p d 200 mw operating ambient temperature t opr -20 ~ +125 storage temperature t stg -55 ~ +150 note absolute maximum ratings are those values beyond which the device could be permanently damaged. absolute maximum ratings are stress ratings only an d functional device operat ion is not implied. ? magnetic characteristics (over operating supply voltage range.) parameter symbol conditions min typ max unit operate point b op at ta=+25 100 g release point b rp at ta=+25 10 g hysteresis b hys at ta=+25 90 g
sk1901 linear integrated circuit unisonic technologies co., ltd 4 of 8 www.unisonic.com.tw qw-r118-005,b ? package information 13 s n marked face 1. vcc 2. gnd 3. output 2 sip-3 s n marked face 1. vcc 2. output 3. gnd sot-23 3 12 bh bop 0 brp h l vout magnetic flux density bh bop 0 brp h l vout magnetic flux density n n s s
sk1901 linear integrated circuit unisonic technologies co., ltd 5 of 8 www.unisonic.com.tw qw-r118-005,b ? typical application circuit
sk1901 linear integrated circuit unisonic technologies co., ltd 6 of 8 www.unisonic.com.tw qw-r118-005,b ? typical operating characteristics temperature vs. magnetic field 55 60 61 62 63 65 65 63 63 38 39 39 39 40 41 42 41 40 17 21 22 22 23 24 24 23 23 0 10 20 30 40 50 60 70 -20 0 10 25 55 75 95 115 125 temperature ( ) magnetic field ( g ) bop brp bw temperature vs. icc 3.99 3.88 3.76 3.61 3.40 3.25 3.09 2.95 2.84 0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00 4.50 -20 0 10 25 55 75 95 115 125 temperature ( ) current ( ma ) icc voltage vs. magnetic field 60 60 60 61 61 61 45 43 40 39 37 35 15 17 20 22 23 26 0 10 20 30 40 50 60 70 3 5 12 15 20 27 voltage ( v ) magnetic field ( g ) bop brp bw temperature vs. sink 33 33 33 33 32 32 31 30 30 28 29 30 31 32 33 34 -20 0 10 25 55 75 95 115 125 temperature ( ) sink (ma) sink voltage vs. icc 3.46 3.51 3.60 3.63 3.67 3.72 3.30 3.35 3.40 3.45 3.50 3.55 3.60 3.65 3.70 3.75 3 5 12 15 20 27 voltage ( v ) current ( ma ) icc voltage vs. sink 30 30 31 31 31 31 30 30 30 30 30 31 31 31 31 3 5 13 15 21 27 voltage ( v ) sink (ma) sink
sk1901 linear integrated circuit unisonic technologies co., ltd 7 of 8 www.unisonic.com.tw qw-r118-005,b ? typical operating characteristics (cont.) switch points 0 10 20 30 40 50 60 70 -20 0 10 25 55 75 95 115 125 ambient temperature in ( ) switch point in gauss hysteresis 0 5 10 15 20 25 30 -20 0 10 25 55 75 95 115 125 ambient temperature in ( ) hysteresis in gauss output sink current 28 29 30 31 32 33 34 -20 0 10 25 55 75 95 115 125 ambient temperature in ( ) sink current in ma supply current 0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00 4.50 -20 0 10 25 55 75 95 115 125 ambient temperature in ( ) supply current in ma vin - icc 3.30 3.35 3.40 3.45 3.50 3.55 3.60 3.65 3.70 3.75 3 5 12 15 20 27 voltage ( v ) input current ( ma ) output sink current 30 30 30 30 30 31 31 31 31 3 5 13 15 21 27 voltage ( v ) current ( ma )
sk1901 linear integrated circuit unisonic technologies co., ltd 8 of 8 www.unisonic.com.tw qw-r118-005,b utc assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all utc products described or contained herein. utc products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
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