LN4915NR-G

LN4915 Low Current Consumption, High Sensitivity CMOS Hall IC ■ General Description ■ Operating Parameters The LN4915 is an integrated hall-effect sensor designed Operating temperature range specifically to meet the requirements of low-power devices. TMIN ≤ TA ≤ TMAX −40°C ≤ TA ≤ 85°C e.g. as an On/Off switch in cellular flip-phones, with battery Operating voltage range 2.0V ≤ VDD ≤ 6.0V operating voltages of 2.0V-5.5V. ■ Application Precise magnetic switching points and high temperature stability are achieved through the unique design of the  Mobile phones internal circuit. An onboard clock scheme is used to reduce  Notebook the average operating current of the IC. During the operate  Portable electronic devices phase the IC compares the actual magnetic field detected ■ Package with the internally compensated switching points. The output Voltage is switched at the end of each operating  SOT-23-3 phase. During the Stand-by phase the output stage is  TSOT-23-3 latched and the current consumption of the device reduced  TO-92 to some µA.  TO-92S The IC switching behavior is omnipolar, it can be switched ■ Typical Application Circuit on with either the north or south pole of a magnet. LN4915 is higher sensitivity of magnetic induction than LN4913, it can be used in security systems 、 sensing 10K magnet smaller occasions. ■ Features VDD LN4915  Micro power design VOUT  2.0 V to 5.5 V battery operation  High sensitivity and high stability of the magnetic 1µF Switching points GND  High resistance to mechanical stress  Digital output signal  Switching for both poles of a magnet (omnipolar)  Not suitable for automotive application ■ Ordering Information Package Code Package Lot Number LN4915MR M SOT-23-3 15XY LN4915NR N TSOT-23-3 LN4915TR T LN4915SR S Part Number Rev.1.0 — Aug. 18, 2011 Package Code Package Lot Number LN4915SRA S TO-92S XXXX 15XY LN4915TRB T TO-92 XXXX TO-92 XXXX LN4915SRB S TO-92S XXXX TO-92S XXXX LN4915TRA T TO-92 XXXX 1 Part Number www.natlinear.com LN4915 ■ Pin Configuration SOT-23-3/TSOT-23-3 (TOP VIEW) GND 3 Marking Sensitive Area (感应区） 13 1 2 Hall series 8 5 Date Code LN4915MR VOUT VDD Pin Number Pin Name Function Description 2 VOUT Output Pin 3 GND Ground 1 VDD Supply Voltage Sensitive Area (感应区） TO-92/TO-92S (Front View) LN4915XY XXXX XY:TR,TRA… 1 Ordering Name Package 2 3 Pin Name 1 2 3 Marking LN4915TR TO-92 VDD VOUT GND 4915 LN4915SR TO-92S VDD VOUT GND 4915 LN4915TRA TO-92 VOUT GND VDD 4915A LN4915SRA TO-92S VOUT GND VDD 4915A LN4915TRB TO-92 VDD GND VOUT 4915B LN4915SRB TO-92S VDD GND VOUT 4915B Rev.1.0 — Aug. 18, 2011 2 www.natlinear.com LN4915 ■ Function Block Diagram VDD 1 Bias and compensation circuits Oscillator & Sequencer Active Error Compensation Threshold Generator 3 Comparator With Hysteresis Decision Hall Probe + Logic Chopped Amplifer GND 2 Latch VOUT ■ Absolute Maximum Ratings Symbol Characteristics Vdd Supply voltage IDD Operating current Values Unit 2.0-6.0 V -1-4.5 mA VOUT Output voltage -0.3-6.0 V IOUT Output current -1-2.0 mA -40～+150 °C TS Storage temperature range TJ Maximum junction temperature 150 °C ESD Protection 4000 V - ■ Electrical Characteristics AC/DC Characteristics Symbol (TA=+25℃,VDD=3.0V,Unless otherwise specified) Characteristic VDD Supply voltage ISAVG Averaged supply current ISOPAVG Conditions Min Typ Max Unit — 2.0 — 5.5 V 1 3 10 uA 0.5 2.0 3.5 mA 4.5 mA 1.9 8 uA 0.13 0.4 V 0.01 1 uA Averaged current during operating time ISOPT Peak current during operating time ISSTB Supply current during standby time VQSAT Output Saturation Voltage IQLEAK Output on Leakage Current 1 IOUT=1mA tr Output rise time RL=2.7KΩ CL=10pF 0.5 1 us rf Output fall time RL=2.7KΩ CL=10pF 0.1 1 us top Operating time 25 100 160 us tstb Standby time 60 140 240 ms top/tstb tstu Duty cycle 0.071 Start-up time of IC Rev.1.0 — Aug. 18, 2011 12 3 % 20 us www.natlinear.com LN4915 ■ Mangentic Characteristics (TA=+25℃,VDD=2.7V, Unless otherwise specified) Symbol Min Typ Max Unit BOPS 1 1.5 2 mT BOPN -2 -1.5 -1 mT BRPS 0.8 1.1 1.5 mT BRPN -1.8 -1.1 -0.8 mT BHYS 0.1 0.4 0.7 mT Is Operating Time Isopavg Standby Time Isavg Isstb top tstb 100µs 130ms Latch Output t VOUT Output OFF VOUTH Output ON VOUTL BOPN 0 BRPN BRPS BOPS B VOUT as function of the applied B-Field Rev.1.0 — Aug. 18, 2011 4 www.natlinear.com LN4915 ■ Package  SOT-23-3 Rev.1.0 — Aug. 18, 2011 5 www.natlinear.com LN4915  TSOT-23-3 Rev.1.0 — Aug. 18, 2011 6 www.natlinear.com LN4915  TO-92 Rev.1.0 — Aug. 18, 2011 7 www.natlinear.com LN4915  TO-92S Rev.1.0 — Aug. 18, 2011 8 www.natlinear.com