Hall IC LT280A LT280A GaAs Hall IC for Noncontact Switch (Unidirectional magnetic field-type) Z 0.95 S 2.9±0.2 0.85 0.6 (Unit :mm) 2.9±0.2 1.9 0.4 ■ Features ■ Outline Dimensions ¡Suitable for portable equipment due to 3V operation 2.7±0.3 ¡Operation by small magnet due to high sensitivity Y Operating point<30mT 1 4 ¡Combining a GaAs Hall device and an IC in a compact package (2.9X1.5X1.1mm) ¡Wide operation temperature range obtained by GaAs Hall device (-20 to +125˚C) 2 3 ¡Long life time due to noncontact-type 0.4 0.4 X 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 +0.2 0.8 (0to0.15) 1.1-0.1 0.16+0.10 -0.06 0.3 ■ Applications ¡FDD ¡HDD ¡Water meter ¡Car stereo ¡Microswitch, etc. - 1 : VCC 2 : VOUT 3 : Don't use. 4 : GND *No.3 terminal and the section of lead (both sides of package in X direction) are connected with the terminal of internal IC. Be careful in connecting other circuits. Parameter Supply voltage Output voltage Output current Power dissipation Operating temperature Storage temperature Soldering temperature*1 (Ta=25˚C) Symbol Rating VCC 6.5 VOUT 6.5 IO 5 PD 100 Topr -20 to +125 Tstg -55 to +150 Tsol 260 Unit V V mA mW ˚C ˚C ˚C As for dimensions of tape-packaged products, refer to page 44 . ■ Operating Explanation Output voltage ■ Absolute Maximum Ratings <Unidirectional magnetic field-type> *1 Soldering time : within 10 seconds 0 BRP BOP +B Magnetic flux density ■ Electrical Characteristics Parameter Operating magnetic flux density Hysteresis breadth Operating voltage Supply current Low level output voltage Output leakage current Operating point temperature drift (Ta=25˚C) Symbol BOP BRP BH VCC ICC VOL IOH ∆BOP Condition VCC=3V VOO=3V RL=4.7kΩ VCC=3V, B=<10mT IO=4mA, B>=30mT VCC=3V, VOO=3V, B=<10mT VCC=3V, Ta=-20˚C to +80˚C MIN. 11.0 10.0 1.0 2.7 - TYP. 3.5 2.5 MAX. 30.0 29.0 6.0 6.0 7.0 0.4 10 8.0 Unit mT mT mT V mA V µA 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 LT280A Operating Magnetic Flux Density vs. Supply Voltage TA=25˚C 24 BOP 20 BRP 16 12 8 4 0 0 Fig. 3 8 4 0 2 4 6 8 Supply voltage VCC (V) 0.5 0.4 0.3 0.2 0.1 0 1 2 3 4 Output current IO (mA) 5 VCC=3V B=<10mT 4 2 Fig. 6 0.5 VCC= V B>=30mT Ta=25˚C Supply Current vs. Ambient Temperature 6 10 Low Level Output Voltage vs. Output Current -40 0 40 80 120 Ambient temperature Ta (˚C) 8 0 0 Fig. 5 0 12 Supply current ICC (mA) 2 BRP 16 Fig. 4 Low level output voltage VOL (V) Supply current ICC (mA) 4 BOP 20 10 6 0 VCC=3V B=<10mT Ta=25˚C 8 Operating Magnetic Flux Density vs. Ambient Temperature 24 10 Supply Current vs. Supply Voltage 10 Low level output voltage VOL (V) 2 4 6 8 Supply voltage VCC (V) Fig. 2 Operating magnetic flux density B (mT) Operating magnetic flux density B (mT) Fig. 1 0.4 -40 0 40 80 120 Ambient temperature Ta (˚C) Low Level Output Voltage vs. Ambient Temperature VCC=3V IO=4mA B>=30mT 0.3 0.2 0.1 0 -40 0 40 80 120 Ambient temperature Ta (˚C)