SS732/SS632 Hall Latch - High Sensitivity Features and Benefits – – – – – – – Application Examples Wide operating voltage range from 2.5V to 24V High magnetic sensitivity – Multi-purpose CMOS technology Chopper-stabilized amplifier stage Superior temperature stability Extremely low switchpoint drift Insensitive to physical stress Low current consumption Output driver with internal pull-up resistor Tiny SOT23 3L or flat SIP 3L both RoHS Compliant packages – – – – – – – Automotive, Consumer and Industrial Solid-state switch Brushless DC motor commutation Speed detection Linear position detection Angular position detection Proximity detection 3 pin SOT23 (suffix SO) 3 pin SIP (suffix UA) Functional Block Diagram VDD Voltage Regulatr Rpu OUT Chopper Hall Plate GND UA Package Pin 1 – V DD Pin 2 – GND Pin 3 – OUT 1 SO Package Pin 1 – V DD Pin 2 – OUT Pin 3 – GND V2.00 May.1, 2012 SS732/SS632 Hall Latch - High Sensitivity General Description The S732 is a bipolar Hall effect sensor IC fabricated from mixed signal CMOS technology. The device integrates a voltage regulator, Hall sensor with dynamic offset cancellation system, specifications and performance have been optimized for commutation applications in 5V and 12V brushless DC motors. Thanks to its wide operating voltage range and extended choice Schmitt trigger and an output driver with internal pull-up resistor, of temperature range, it is quite suitable for use in automotive, all in a single package. It incorporates advanced chopper industrial and consumer applications. The device is delivered in a stabilization techniques to provide accurate and stable magnetic Small Outline Transistor (SOT) for surface mount process or in a switch points. There are many applications for this HED – Hall Plastic Single In Line (SIP 3L flat) for through- hole mount. Both Electronic Device - in addition to those listed above. The design, 3-lead packages are RoHS compliant. Glossary of Terms MilliTesla (mT), Units of magnetic flux density: 1mT = 10 Gauss RoHS Restriction of Hazardous Substances SOT Small Outline Transistor (SOT package) – also referred with the package code “SO” ESD Electro-Static Discharge BLDC Brush-Less Direct-Current Operating Point (B OP ) Magnetic flux density applied on the branded side of the package which turns the output driver ON (V OUT = V DSon ) Release Point (B RP ) Magnetic flux density applied on the branded side of the package which turns the output driver OFF (V OUT = high) 2 V2.00 May.1, 2012 SS732/SS632 Hall Latch - High Sensitivity Pin Definitions and Description SOT Pin № SIP Pin № Name Type Function 1 1 VDD Supply Supply Voltage pin 2 3 OUT Output Open Drain Output pin 3 2 GND Ground Ground pin Detailed General Description The S732 exhibits latch magnetic switching characteristics. Therefore, it requires both south and north poles to operate properly. The OUT pin of these devices switches low (turns on) when a magnetic field perpendicular to the Hall sensor exceeds the operate point threshold, B OP . After turn-on, the output voltage is V DSon . Note that the device latches, that is, a south pole of sufficient strength towards the branded surface of the device turns the device on. The device remains on if the south pole is removed (B→0). This latching property defines the device as a magnetic memory. When the magnetic field is reduced below the release point, BRP , the OUT pin turns off (goes high). The difference in the magnetic operate and release points is the hysteresis, B HYS , of the device. This built-in hysteresis prevents output oscillation near the switching point, and allows clean switching of the output even in the presence of external mechanical vibration and electrical noise. The device behaves as a latch with symmetric operating and release switching points (BOP=|BRP|). This means magnetic fields with equivalent strength and opposite direction drive the output high and low. Powering-on the device in the hysteresis region (less than B OP and higher than B RP ) allows an indeterminate output state. The correct state is attained after the first excursion beyond B OP or B RP . The SOT-23 device is reversed from the UA package. The SOT-23 output transistor will be latched on in the presence of a sufficiently strong North pole magnetic field applied to the marked face. Output level Output level OUT = High OUT = High B HYS B HYS OUT = Low OUT = Low B RP -18Gs typ UA package 0mT B OP 18Gs typ B RP -18Gs typ Flux density - Latch characteristic 3 SO package 0mT B OP 18Gs typ Flux density - Latch characteristic V2.00 May.1, 2012 SS732/SS632 Hall Latch - High Sensitivity Unique Features Based on mixed signal CMOS technology, S732 is a Hall-effect device with high magnetic sensitivity. This multi-purpose latch meets most of the application requirements. The chopper-stabilized amplifier uses switched capacitor technique to suppress the offset generally observed with Hall sensors and amplifiers. The CMOS technology makes this advanced technique possible and contributes to smaller chip size and lower current consumption than bipolar technology. The small chip size is also an important factor to minimize the effect of physical stress. This combination results in more stable magnetic characteristics and enables faster and more precise design. The wide operating voltage from 2.5V to 24V, low current consumption and large choice of operating temperature range according to “L”, “K” and “E” specification make this device suitable for automotive, industrial and consumer applications. Absolute Maximum Ratings Symbol Value Units Supply Voltage VDD 28 V Supply Current IDD 50 mA Output Voltage VOUT 28 V Output Current IOUT 50 mA Storage Temperature Range TS -50 to 150 °C Maximum Junction Temperature TJ 165 °C Symbol Value Units Temperature Suffix “ E” TA -40 to 85 °C Temperature Suffix “ K” TA -40 to 125 °C Temperature Suffix “ L” TA -40 to 150 °C Parameter Absolute maximum ratings Operating Temperature Range Exceeding the absolute maximum ratings may cause permanent dam age. Exposure to absolute-maximum- rated conditions for extended periods may affect device reliability. 4 V2.00 May.1, 2012 SS732/SS632 Hall Latch - High Sensitivity General Electrical Specifications DC Operating Parameters T A = 25℃, V DD = 2.5V to 24V (unless otherwise specified) Max Units 24 V 5 mA 0.5 V 10 µA Symbol Test Conditions Supply Voltage VDD Operating Supply Current IDD B < B RP Output Saturation Voltage VDSon IOUT = 20mA, B > B OP Output Leakage Current IOFF B < B RP VOUT = 24V 1 Output Rise Time Tr RL = 1kΩ, CL = 20pF 0.25 µs Output Fall Time Tf RL = 1kΩ, CL = 20pF 0.25 µs Rpu --- Maximum Switching Frequency FSW --- Package Thermal Resistance RTH Single layer (1S) Jedec board Internal pull-up resistor Min Typ Parameter 2.2 9 15 12 kΩ 10 KHz 301 °C/W Electrical specifications Note: The output of S732 will be switched after the supply voltage is over 2.2V, but the magnetic characteristics won't be normal until the supply is over 2.5V. Magnetic Specifications DC Operating Parameters VDD = 2.5V to 24V (unless otherwise specified) Parameter Symbol Operating Point B OP Release Point B RP Hysteresis B HYS Parameter Symbol Operating Point B OP Release Point B RP Hysteresis B HYS Operating Point B OP Test Conditions E spec., TA = 85°C Min Typ Max Units 10 18 30 G -30 -18 -10 G 36 G 批注 [PKU1]: 这个不对，从图 上看滞后工作区应位于操作 Release Point B RP Hysteresis B HYS Test Conditions Min 7 K spec., TA = 85°C -35 Typ Max Units 18 35 G -18 -7 G 点和释放点之间，建议删了 这项，因为它取决于那两个 点，同时还要加 K 系列的值， 只能估算了 36 L spec., TA = 150°C G 批注 [PKU2]: 这个不对，从图 5 18 40 G -40 -18 -5 G 36 G 点和释放点之间，建议删了 这项，因为它取决于那两个 点，同时还要加 K 系列的值， Magnetic specifications 只能估算了 Output Behaviour versus Magnetic Pole 5 上看滞后工作区应位于操作 V2.00 May.1, 2012 SS732/SS632 Hall Latch - High Sensitivity DC Operating Parameters TA = -40 C to 150 C, VDD = 2.5V to 24V (unless otherwise specified) Parameter Test Conditions(SO) OUT(SO) Test Conditions(UA) South pole B < B RP High B > B OP Low North pole B > B OP Low B < B RP High OUT(UA) Output behaviour versus magnetic pole Application Information It is strongly recommended that an external bypass capacitor be connected (in close proximity to the Hall sensor) between the supply(VDD Pin) and ground(GND Pin) of the device to reduce both external noise and noise generated by the chopper stabilization technique. As is shown in the two figures in next page, a 0.1μF capacitor is typical. For reverse voltage protection, it is recommended to connect a resistor or a diode in series with the VDD pin. When using a resistor, three points are important: - the resistor has to limit the reverse current to 50mA maximum (VCC / R1 ≤ 50mA) - the resulting device supply voltage VDD has to be higher than VDD min (VDD = VCC – R1*IDD) - the resistor has to withstand the power dissipated in reverse voltage condition (PD = V CC 2/R1) Using a diode, a reverse current cannot flow and the voltage drop is almost constant (≈0.7V). Therefore, a 100Ω/0.25W resistor for 5V application and a diode for higher supply voltage are recommended. Both solutions provide the required reverse voltage protection. When a weak power supply is used or when the device is intended to be used in noisy environment, it is recommended that figure 13.3 from the Application Information section is used. The low-pass filter formed by R1 and C1 and the Zener diode Z1 bypass the disturbances or voltage spikes occurring on the device supply voltage VDD. The diode D1 provides additional reverse voltage protection. Automotive and Severe Environment Protection Circuit Typical Three-Wire Application Circuit R1:100 C1 VDD S732 R2 C1 D1 OUT Z1 VDD S732 OUT C2 C2 GND R2 GND The S732 have been optimized for commutation applications in 5V and 12V brushless DC motors. The follow figure is the typical application circuit for 3 phase brushless DC motors. 6 V2.00 May.1, 2012 SS732/SS632 Hall Latch - High Sensitivity Standard information regarding manufacturability of Hall IC with different soldering processes Our products are classified and qualified regarding soldering technology, solderability and moisture sensitivity level according to following test methods: Reflow Soldering SMD’s (Surface Mount Devices) • IPC/JEDEC J-STD-020 Moisture/Reflow Sensitivity Classification for Nonhermetic Solid State Surface Mount Devices (classification reflow profiles according to table 5-2) • EIA/JEDEC JESD22-A113 Preconditioning of Nonhermetic Surface Mount Devices Prior to Reliability Testing (reflow profiles according to table 2) Wave Soldering SMD’s (Surface Mount Devices) and THD’s (Through Hole Devices) • EN60749-20 Resistance of plastic- encapsulated SMD’s to combined effect of moisture and soldering heat • EIA/JEDEC JESD22-B106 and EN60749-15 Resistance to soldering temperature for through-hole mounted devices Iron Soldering THD’s (Through Hole Devices) • EN60749-15 Resistance to soldering temperature for through-hole mounted devices Solderability SMD’s (Surface Mount Devices) and THD’s (Through Hole Devices) • EIA/JEDEC JESD22-B102 and EN60749-21 Solderability ESD Precautions Electronic semiconductor products are sensitive to Electro Static Discharge (ESD). 7 V2.00 May.1, 2012 SS732/SS632 Hall Latch - High Sensitivity Always observe Electro Static Discharge control procedures whenever handling semiconductor products. Package Information Package UA, 3-Pin SIP: 8 V2.00 May.1, 2012 SS732/SS632 Hall Latch - High Sensitivity Package SO, 3-Pin SOT-23: Top View Notes: 1). PINOUT: 3 1.60 2.65 1.70 2.95 1 Pin 1 VDD Pin 2 Output Pin 3 GND 2). All dimensions are in millimeters ; 2 1.70 2.10 Side View End View 2.82 3.02 0.08 0.20 0.70 0.90 0.70 0.80 0.20 MIN 0.00 0.10 0.35 0.50 Hall plate location Bottom View of TSOT-23 3 Chip 0.95 0.80 2 0.36 0.46 1 1.50 1.40 9 V2.00 May.1, 2012 SS732/SS632 Hall Latch - High Sensitivity Ordering Information Part No. Pb-free Temperature Code Package Code Packing YES -40°C to 85°C SOT-23 7-in. reel, 3000 pieces/ reel YES -40°C to 85°C TO-92 Bulk, 1000 pieces/ bag YES -40°C to 125°C SOT-23 7-in. reel, 3000 pieces/ reel YES -40°C to 125°C TO-92 Bulk, 1000 pieces/ bag YES -40°C to 150°C SOT-23 7-in. reel, 3000 pieces/ reel YES -40°C to 150°C TO-92 Bulk, 1000 pieces/ bag SS732ESOT/ SS632ESOT SS732EUA/ SS632EUA SS732KSOT/ SS632KSOT SS732KUA/ SS632KUA SS732LSOT/ SS632LSOT SS732LUA/ SS632LUA 10 V2.00 May.1, 2012