SS360NT/SS360ST/SS460S High Sensitivity Bipolar Latching Digital Hall-Effect Sensor ICs DESCRIPTION The SS360NT/SS360ST/SS460S High Sensitivity Bipolar For brushless dc motor manufacturers that need latching Latching Digital Hall-Effect Sensor ICs are small, sensitive and sensors with reliable, consistent performance for more efficient versatile devices that are operated by the magnetic field from a and smaller designs, Honeywells new family of High permanent magnet or an electromagnet. They are designed to Sensitivity Hall-Effect Bipolar Latching Sensor ICs responds to respond to alternating North and South poles. The SS360NT is low magnetic fields and offers consistent repeatability while turned ON by a North pole while the SS360ST and SS460S delivering faster response times to a change in magnetic field are turned ON by a South pole. for better motor efficiency. The SS360NT/SS360ST/SS460S offers reliable switching These Hall-effect devices are available in two package styles: points with a high magnetic sensitivity of 30 G typical (55 G the SS360NT and SS360ST in the miniature SOT-23 surface maximum). This sensor IC does not use chopper stabilization mount package and the SS460S in the leaded, flat TO-92-style on the Hall element, providing a clean output signal and a package. faster latch response time when compared to competitive high sensitivity Hall-effect bipolar latching sensor ICs which do use The SS360NT and SS360ST are available on tape and reel chopper stabilization. (3000 units per reel). The SS460S is available in a bulk package (1000 units per bag). These products offer reverse polarity protection, deliver a stable output over a -40 C to 150 C -40 F to 302 F temperature range, and can accept any dc supply voltage from 3 Vdc to 24 Vdc. FEATURES AND BENEFITS Fastest response time in its class: Provides more Small, leaded, flat TO-92-style package (SS460S): Allows efficiency in commutating a brushless dc motor for a compact PC board layout No chopper stabilization: Results in a clean output signal Wide operating voltage range of 3 Vdc to 24 Vdc: Allows High sensitivity: Operates from only 30 Gauss typical, at for potential use in a wide range of applications 25C 77 F and 55 Gauss maximum over the full -40 C to Built-in reverse voltage: Enhances the protection of the 150 C -40 F to 302 F temperature range, allowing for sensor and the circuits the use of smaller, magnets or a wider air gap Durable design: Allows operation up to 150 C 302 F Bipolar latching magnetics: Makes these products well- RoHS-compliant material meets Directive 2002/95 suited for accurate speed sensing and RPM (revolutions per minute) measurement Sub-miniature, SOT-23 surface mount package (SS360NT/SS360ST) supplied on tape and reel: Allows for compact design with automated component placement SS360NT/SS360ST/SS460S POTENTIAL APPLICATIONS Transportation Industrial/Commercial Brushless dc motor commutation Speed and RPM sensing Flow-rate sensing for appliances Tachometer, counter pickup Speed and RPM sensing Motor and fan control Tachometer, counter pickup Electronic window lift Motor and fan control Convertible roof position Robotics control Medical Medical equipment using electric motors Table 1. SS360NT/SS360ST/SS460S Performance Specifications (At 3 Vdc to 24 Vdc supply, 20 mA load, T = -40 C to A 150 C -40 F to 302 F except where otherwise specified.) Characteristic Condition Min. Typ. Max. Unit Supply voltage -40 C to 150 C -40 F to 302 F 3 24 Vdc Supply current Vsupply = 3 V at 25 C 77 F 3.5 6 mA 8 Vsat Gauss >55 0.6 V Output leakage current Gauss >55 10 A Rise/fall time Vsupply = 12 V at 25 C 77 F 1.5 s Thermal resistance: SS460S (flat TO-92-style) 233 C/W SS360NT/SS360ST (SOT-23) 303 Operate -40 C to 125 C -40 F to 257 F 5 30 55 Gauss Release -40 C to 125 C -40 F to 257 F -55 -30 -5 Gauss Differential -40 C to 125 C -40 F to 257 F 40 60 80 Gauss Operating temperature Vsupply = 3 Vdc to 24 Vdc -40 -40 150 302 C F Storage temperature -40 -40 165 329 C F NOTICE Bipolar Hall-effect sensor ICs may have an initial output in either the ON or OFF state if powered up with an applied magnetic field in the differential zone (applied magnetic field >Brp and <Bop). Honeywell recommends allowing 10 s for output voltage to stabilize after supply voltage has reached its final rated value. NOTICE The magnetic field strength (Gauss) required to cause the switch to change state (operate and release) will be as specified in the magnetic characteristics. To test the switch against the specified magnetic characteristics, the switch must be placed in a uniform magnetic field. 1 Table 2. SS360NT/SS360ST/SS460S Absolute Maximum Ratings Characteristic Min. Typ. Max. Unit Supply voltage -26.0 26.0 V Applied output voltage -0.5 26.0 V Output current 20 mA Magnetic flux no limit Gauss Note 1: Absolute maximum ratings are the extreme limits that the device will withstand without damage to the device. However, the electrical and mechanical characteristics are not guaranteed as the maximum limits (above recommended operating conditions) are approached, nor will the device necessarily operate at absolute maximum ratings. 2 www.honeywell.com/sensing