SC2462UA

Features Applications  Digital Omni-polar Hall-Effect sensor  Flow meters  High chopping frequency  Magnetic encoding  Very high sensitivity  Proxmimity sensing  Superior temperature stability  Garage door openers  Supports a wide voltage range  Power sliding doors - 2.5 to 24V  Sunroofs motor - Operating from unregulated supply  Reverse battery protection (up to 28V)  Over-voltage protection at all pins  Robust EMC performance  Solid-state reliability  Small package - 3-pin SIP - 3-pin SOT-23 Description The SC246X family, produced with BiCMOS technology, is a chopper-stabilized Hall Effect Sensor that offers a magnetic sensing solution with superior sensitivity stability over temperature and integrated protection features. Superior high-temperature performance is made possible through dynamic offset cancellation, which reduces the residual offset voltage normally caused by device over molding, temperature dependencies, and thermal stress. Output State Each device includes on a single silicon chip a voltage regulator, Hall-voltage generator, small-signal amplifier, chopper stabilization, Schmitt trigger, and an open-drain output to sink up to 20mA. An onboard regulator permits with supply voltages of 2.5 to 24V which makes the device suitable for a wide range of industrial and atuomotive applications The device is available in a 3-pin SIP and a plastic SOT23-3 surface mount package. Both packages are lead(Pb) free, with 100% matte tin leadframe plating. Device Information Part Number Packing SC2462UA Bulk, 1000 pieces/bag SIP3 SC2462SO Reel, 3000pieces/reel SOT-23 SC2464UA Bulk, 1000 pieces/bag SIP-3 SC2464SO Reel, 3000pieces/reel Mounting SOT-23 -2- Ambient, TA BOP(Typ.) BRP(Typ.) -40℃ to 150℃ ±2.5mT ±1.5mT -40℃ to 150℃ ±6.0mT ±5.0mT Terminal configuration and functions Terminal Name Number Type Description 2.5 to 24 V power supply UA SO VDD 1 1 PWR GND 2 3 Ground Ground terminal OUT 3 2 Output Output terminal -3- Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted) (1) Parameter Symbol Min. Max. Units Power supply voltage VDD -28(2) 28 V Output terminal voltage VOUT -0.5 28 V Output terminal current sink ISINK 0 30 mA Operating ambient temperature TA -40 150 ℃ Maximum junction temperature TJ -55 165 ℃ TSTG -65 175 ℃ Storage temperature (1) Stresses above those listed here may cause permanent damage to the device. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. (2) Ensured by design. ESD Protection Human Body Model (HBM) tests according to: standard AEC-Q100-002 Parameter ESD-Protection Symbol Min. Max. Units VESD -4 4 KV Thermal Characteristics Symbol Parameter RθJA UA Package thermal resistance RθJA SO Package thermal resistance Test Conditions Single-layer PCB, with copper limited to solder pads Single-layer PCB, with copper limited to solder pads -4- Rating Units 166 ℃/W 228 ℃/W Electrical Characteristics over operating free-air temperature range (VDD = 5.0V, unless otherwise noted) Symbol Parameter VDD Operating voltage(1) VDDR Reverse supply voltage IDD Operating supply current ton Power-on time IQL Off-state leakage current Test Conditions Min. Typ. Max. Units 2.5 -- 24 V -28 -- -- V VDD=2.5 to 24 V, TA=25℃ 0.8 1.6 2.0 mA VDD=2.5 to 24 V, TA=125℃ 0.8 1.7 2.0 mA -- 35 50 µS Output Hi-Z -- -- 3 µA VDD=5V, IO=10mA, TA=25℃ -- 20 -- Ω VDD=5V, IO=10mA, TA=125℃ -- 30 -- Ω TJ < TJ(Max.) RDS(on) FET on-resistance td Output delay time B=BRP to BOP -- 15 25 µS tr Output rise time (10% to 90%) R1=1Kohm Co=50pF -- -- 0.5 µS tf Output fall time (90% to 10%) R1=1Kohm Co=50pF -- -- 0.2 µS (1) Maximum voltage must be adjusted for power dissipation and junction temperature, see Thermal Characteristics Magnetic Characteristics over operating free-air temperature range (unless otherwise noted) Symbol Parameter fBW Bandwidth Test Conditions Min. Typ. Max. Units 20 -- -- kHz 1.5 2.5 3.5 mT 0.5 1.5 2.5 mT -- 1.0 -- mT 5.0 6.0 7.0 mT 4.0 5.0 6.0 mT -- 1.0 -- mT SC2462 ±2.5 / ±1.5 mT BOP Operated point BRP Release point BHYS Hysteresis TA=25℃ SC2464 ±6.0 / ±5.0 mT BOP Operated point BRP Release point BHYS Hysteresis TA=25℃ 1mT=10Gs Magnetic flux density, B, is indicated as a negative value for North-polarity magnetic fields, and as a positive value for South-polarity magnetic fields. -5- Characteristic Data IDD vs VDD IDD vs TA 3.0 Supply Current (mA) Supply Current (mA) 3.0 2.5 2.0 TA=25 1.5 1.0 0.5 2.0 VDD=5V 1.5 1.0 0.5 0 5 10 15 20 25 -40 0 40 80 120 Supply Voltage (V) Ambient Temperature ( ) VQ(sat) vs VDD VQ(sat) vs TA 150 160 300 Saturation Voltage (mV) Saturation Voltage (mV) 2.5 125 TA=25 100 IOUT=5mA 75 50 25 250 200 150 VDD=5V IOUT=5mA 100 50 0 5 10 15 20 25 -40 Supply Voltage (V) 0 40 80 120 Ambient Temperature ( ) -6- 160 Characteristic Data (Continued) SC2462 BOP and BRP vs TA SC2462 BHYS vs TA VDD=5V f=1kHz VDD=5V f=1kHz 2.0 BOP Magnetic Field (mT) Magnetic Field (mT) 3.0 2.5 2.0 BRP 1.5 1.0 1.5 BHYS 1.0 0.5 0.5 -40 0 40 80 120 -40 160 0 80 120 Ambient Temperature ( ) Ambient Temperature ( ) SC2464 BOP and BRP vs TA SC2464 BHYS vs TA VDD=5V f=1kHz 160 VDD=5V f=1kHz 9.0 2.0 Magnetic Field (mT) Magnetic Field (mT) 40 7.5 BOP 6.0 4.5 BRP 3.0 1.5 BHYS 1.0 0.5 1.5 -40 0 40 80 120 -40 160 Ambient Temperature ( ) 0 40 80 120 Ambient Temperature ( ) -7- 160 Functional Block Diagram The SC246X device is a chopper-stabilized Hall sensor with a digital latched output for magnetic sensing applications. The device can be powered with a supply voltage between 2.5 and 24V, and continuously survives continuous -28V reverse-battery conditions. The device does not operate when -28 to 2.2V is applied to the VDD terminal (with respect to the GND terminal). In addtion, the device can withstand voltages up to 40V for transient durations. The output of SC246X switches low (turns on) when a magnetic field (South or North polarity) perpendicular to the Hall element exceeds the operate point threshold, BOP. After turn-on, the output is capable of sinking 20mA and the output voltage is VQ(sat). When the magnetic field is reduced below the release point, BRP, the device output goes high (turns off). The difference in the magnetic operate and release points is the hysteresis, BHYS, of the device. This built-in hysteresis allows clean switching of the output even in the presence of external mechanical vibration and electrical noise. An external output pull-up resistor is required on the OUT terminal. The OUT terminal can be pulled up to VDD or to a different voltage supply. This allows for easier interfacing with controller circuits. Offset Cancel -8- Field Direction Definition A positive magnetic field is defined as a South pole near the marked side of the package. OUT=Low OUT=High OUT=Low OUT=High N/S N/S S/N S/N S/N S/N N/S N/S SO Package SO Package 1 2 3 1 UA Package 2 3 UA Package Transfer function The SC246X exhibits “Omnipolar” magnetic characteristics. It means the device reacts to both North and South magnetic pole. The purpose is to detect the presence of any magnetic field applied on the device. This mode of operation simplifies customer production processes by avoiding the need to detect the Hall sensor pole active on the magnet used in the application. Therefore, the “Omnipolar” magnetic behaviour helps customers by removing the need of magnet pole detection system during production phase. Powering-on the device in the hysteresis region, less than BOP and higher than BRP, allows an indeterminate output state. The correct state is attained after the first excursion beyond BOP or BRP. If the field strength is greater than BOP, then the output is pulled low. If the field strength is less than BRP, the output is released. -9- Mechanical Dimensions - 10 - Mechanical Dimensions - 11 -