Product Brief VOLTAGE DETECTOR IC LINEAR HALL-EFFECT AZ70XX AH49E Description Parametric Table The AH49E is series a small, linear Hall-effect device The AZ70XX ICsversatile are under voltage detectors with that is operated by the magnetic field from a permanent a built in voltage threshold and low power consumption. magnet or an electromagnet. The designed output voltage is set by The AZ70XX are specifically to accurately the supply voltage and varies in proportion to the strength monitor power supplies. of the magnetic field. The AZ70XX use a precision on-chip voltage reference The circuitry features output,voltage. which and aintegrated comparator to measure the low inputnoise operating makes it unnecessary to use external filtering. It also These ICs can accurately reset the system after detecting includes precision resistors to provide increased temperavoltage at the time of switching power on and instantature andin accuracy. Thesystems operating neousstability power off various CPU andtemperature other logic o o range of these sensors is -40 C are to 852.3V/2.5V/ C, approsystems. The linear detect Hall voltage thresholds priate for commercial, consumer for and AZ7023/25/27/29/ industrial applica2.7V/2.9V/3.1V/3.3V/4.2V/4.5V tions. 31/33/42/45 respectively. Built in hysteresis helps to prevent erratic operation in the presence of noise. The AH49E is available in standard TO-92S and SOT-233 packages. VCC=5V, TA=25oC, unless otherwise noted Supply Voltage (Max) (V) 20 Supply Supply Current Current (mA) (Max)(A) 3.5 500 VNULL (V) Detect Voltage (Typ) Output Voltage Sensitivity (mV/GS) Output Voltage Temperature Span (V) Detect Voltage Coefficient (%/oC) Output Resistor ()Delay Time (s) "H" Transmission Magnetic Field Range (GS) Operating Temperature (Min) (oC) 2.5 2.7, 2.3, 2.5, 2.9, 3.1, 3.3, 1.6 4.2, 4.5 0.8 to V0.01 CC-0.8 60 15 1000 -40 TO-92S 85 SOT-23-3 Packages Operating Temperature (Max) (oC) Features Benefits * Low Current Consumption: Features ICCL=300A Typical Typical * IMiniature CCH=30AConstruction * Low Minimum Operating ResetPower Consumption of Voltage 3.5mA for at Output VCC=5V for ting: 0.8V Typical Energy Efficiency * Hysteresis Voltage: 50mV Typical * Built SingleinCurrent Sourcing Output * Open Collector Output * Linear Output for Circuit Design Flexibility * Extended Range:Eliminates -40 to 85othe C Need for Low NoiseTemperature Output Virtually Filtering * A Stable and Accurate Output Applications * Temperature Range of -40oC to 85oC * Responds to Either Positive or Negative Gauss * Low Battery Voltage Detector * Power Fail Indicator * Processor Reset Generator * Battery Backup Control Applications * Home Electric Appliances Benefits * Easier to Use * Very Competitive Price * Low Supply Current * Good Linearity and Varies in Proportion to the Strength ofAvailable the MagneticMaterials Field Additional * Low Noise Output * Samples Stable Output * * Current Sensing * Control Pin Motor Configuration * Position Sensing * Magnetic Code Reading TO-92 * Ferrous Metal Detector * Vibration Sensing * Liquid Level Sensing 3 OUT * Weight Sensing * * * Data Sheet Reliability Report ESD Report Additional Available Materials * * * * Samples Data Sheet Reliability Report ESD Report SOT-89-3 TO-92 Ammo Packing 3 OUT 2 GND 2 GND 1 VCC 1 VCC 1 VCC Jun. 2007 Aug. 2010 2 3 GND OUT BCD Semiconductor BCD Semiconductor Manufacturing Manufacturing Limited Limited Product Brief VOLTAGE DETECTOR IC LINEAR HALL-EFFECT AZ70XX AH49E Pin Configuration Description Parametric Table The AZ70XX series ICs are under voltage detectors with TO-92S a built in voltage threshold and low power consumption. The AZ70XX are specifically designed to accurately monitor power supplies. Supply Voltage (Max) (V) SOT-23-3 Supply Current (Max)(A) 20 500 GND Detect Voltage (Typ) The AZ70XX use a precision OUT 3 on-chip voltage reference and a comparator to measure the input operating voltage. GND 2 the system after detecting These ICs can accurately reset voltage at the time of switching power on and instanta1 VCC neous power off in various CPU systems and other logic systems. The detect voltage thresholds are 2.3V/2.5V/ 2.7V/2.9V/3.1V/3.3V/4.2V/4.5V for AZ7023/25/27/29/ 31/33/42/45 respectively. Built in hysteresis helps to preView) of noise. vent erratic operation in (Front the presence 2.3, 2.5, 2.7, 2.9, 3.1, 3.3, 4.2, 4.5 3 Detect Voltage Temperature Coefficient (%/oC) "H" Transmission 1 Delay Time 2 (s) 0.01 Operating Temperature (Min) (oC) OUT VCC -40 Operating Temperature (Max) (oC) 85 15 (Top View) Features Benefits Ordering Information Example * Low Current Consumption: * Easier to Use ICCL=300A Typical * Very Competitive Price Part Number Marking ID ICCH=30A Temperature Typical Package Packing Type Leadfor Free Lead Free Green * Low MinimumRange Operating Voltage Output Reset-Green ting: 0.8V Typical AH49EZ3-E1 AH49EZ3-G1 Additional AH49E Available AH49GMaterials Bulk TO-92S o C -40 to 85 * SOT-23-3 Built in Hysteresis Voltage: 50mV Typical AH49ENTR-G1 GJ1 Tape & Reel * Open Collector Output * Samples * Extended Temperature Range: to 85oC datasheet. * Data Sheet Detailed information please refer to -40 the relevant * Reliability Report * ESD Report Applications * * * * * Low Battery Voltage Detector Power Fail Indicator Processor Reset Generator Battery Backup Control Home Electric Appliances Pin Configuration Sales Office: SOT-89-3 TO-92 TO-92 Ammo Packing USA Shanghai 30920 Huntwood Ave. Hayward, CA 94544, No. 1600, Zi Xing Road, Shanghai ZiZhu Science-based Industrial USA Park, 200241, China Tel : +1-510-324-2988 Tel : 86-21-24162266 3 OUT 3 OUT Fax : +1-510-324-2788 Fax : 86-21-24162277 2 GND Taiwan 4F, 298-1 Rui Guang Road, Nei-Hu 1 VCCDistrict, Taipei, Taiwan Tel : 886-2-2656-2808 Fax : 886-2-2656-2806 Jun. 2007 Aug. 2010 2 1 GND 1 2 3 Shenzhen VUnit CC A Room 1203, Skyworth Bldg., Gaoxin Ave.1.S., Nanshan District, Shenzhen, China Tel : 86-755-8826 7951 VCC GND OUT Fax : 86-755-8826 7865 BCD Semiconductor BCD Semiconductor Manufacturing Manufacturing Limited Limited