Hall IC LT251A GaAs Hall IC for Noncontact Swich (Unidirectional magnetic field-type) Z 0.95 2 S 3 2.9±0.2 0.6 (Unit : mm) 2.9±0.2 1.9 0.4 ■ Features ■ Outline Dimensions 2.7±0.3 ¡Operation by small magnet due to high sensitivity Operating point<30mT Y ¡Combining a GaAs Hall device and an IC in a compact 1 4 package (2.9X1.5X1.1mm) ¡Wide operation temperature range obtained by GaAs Hall device (-20 to +125˚C) ¡Long life time due to noncontact-type 0.85 LT251A 0.4 4-R0.2 Hall device center line X : +0.05±0.23mm against package center Y : -0.05±0.1mm against package lead center between No.2 and No.3 terminals Z : 0.81±0.15mm from package surface Terminal connections 1.5±0.2 0.6 0.6 REG Hall + device H Unit V V mA mW ˚C ˚C ˚C *1 Soldering time : within 10 seconds +0.2 0.8 - 1 : VCC 2 : VOUT 3 : Don't use. *No.3 terminal and the section of leads (both sides 4 : GND of package in X direction) are connected with the terminal of internal IC. Be careful in connecting other circuits. As for dimensions of tape-packaged products, refer to page 44 . ■ Operating Explanation Output voltage Symbol Rating VCC 18 VOUT 18 IO 5 PD 100 Topr -20 to +125 -55 to +150 Tstg 260 Tsol 1.1-0.1 (Ta=25˚C) (0to0.15) ■ Absolute Maximum Ratings 0.16+0.10 -0.06 0.3 ¡FDD ¡HDD ¡Water meter ¡Car stereo ¡Microswitch, etc. Parameter Supply voltage Output voltage Output current Power dissipation Operating temperature Storage temperature Soldering temperature*1 0.4 X ■ Applications <Unidirectional magnetic field-type> 0 BRP BOP +B Magnetic flux density ■ Electrical Characteristics Parameter Operating magnetic flux density Hysteresis breadth Operating voltage Supply current Low level output voltage High level output voltage Output short circuit current Operating point temperature drift (Ta=25˚C) Symbol BOP BRP BH VCC ICC VOL VOH IOS ∆BOP Conditions VCC=16V VCC=16V, B=<10mT VCC=16V, IO=4mA, B>=30mT VCC=16V, IO=-100µA, B=<10mT VCC=16V VCC=16V, Ta=-5˚C to+60˚C VCC=16V, Ta=-20˚C to+80˚C MIN. 11 10 1 4.5 13.9 -1.55 - TYP. 2.0 2.5 MAX. 30 29 5 16 10.5 0.4 -0.80 4.5 8.0 Unit mT mT mT V mA V V mA mT mT In the absence of confirmation by device specification sheets, SHARP takes no responsibility for any defects that may occur in equipment using any SHARP devices shown in catalogs, data books, etc. Contact SHARP in order to obtain the latest device spcification sheets before using any SHARP device. Hall IC LT251A Ta=25˚C 24 20 BOP 16 12 BRP 8 4 0 0 Fig. 3 Supply current ICC (mA) Supply current ICC (mA) 6 4 2 0 Fig. 5 4 8 12 16 Supply voltage VCC (V) 0.8 0.6 0.4 .02 0 0 1 2 3 4 Output current IO (mA) 12 5 BRP 8 4 0 -40 0 40 80 120 Ambient temperature Ta (˚C) Supply Current vs. Ambient Temperature VCC=16V B=<10mT 8 6 4 2 Fig. 6 1.0 VCC=16V B>=30mT Ta=25˚C BOP 16 0 20 Low Level Output Voltage vs. Output Current 1.0 20 10 8 0 VCC=16V Fig. 4 B=<10mT Ta=25˚C Operating Magnetic Flux Density vs. Ambient Temperature 24 20 Supply Current vs. Supply Voltage 10 Low level output voltage VOL (V) 4 8 12 16 Supply voltage VCC (V) Fig. 2 Operating magnetic flux density B (mT) Operating Magnetic Flux Density vs. Supply Voltage Low level output voltage VOL (V) Operating magnetic flux density B (mT) Fig. 1 0.8 -40 0 40 80 120 Ambient temperature Ta (˚C) Low Level Output Voltage vs. Ambient Temperature VCC=16V IO=4mA B>=30mT 0.6 0.4 0.2 0 -40 0 40 80 120 Ambient temperature Ta (˚C)