ATS276G-PG-B-A

ATS276 COMPLEMENTARY OUTPUT HALL EFFECT LATCH ʳ General Descriptionʳ Features x x x x x x x x x On-Chip Hall Sensor with Two Different Sensitivity and Hysteresis Settings for ATS276 3.5V to 20V Operating Voltage 400mA (avg.) Output Sink Current Built-in Protecting Diode Only for Chip Reverse Power Connecting -20qC to 85qC Operating Temperature Low Profile 4 Pin SIP Package Lead Free package: SIP-4L SIP-4L: Available in “Green” Molding Compound (No Br, Sb) Lead Free Finish/RoHS Compliant (Note 1) ATS276 are integrated Hall sensors with output drivers, mainly designed for electronic commutation of brush-less DC Fan. This IC internally includes the regulator, protecting diode, Hall plate, amplifier, comparator, and a pair of complementary open-collector outputs (DO, DOB). While the magnetic flux density (B) is larger than operate point (Bop), DO will turn on (low), and meanwhile DOB will turn off (high). Each output is latched until B is lower than release point (Brp), and then DOᇬDOB transfer each state. For DC fan application, sometimes need to test power reverse connection condition. Internal diode only protects chip-side but not for coil-side. If necessary, add one external diode to block the reverse current from coil-side. Applications x x x x Dual-Coil Brush-Less DC Motor Dual-Coil Brush-Less DC Fan Revolution Counting Speed Measurement Ordering Information ʳ ATS276 X - P X - B - X Version Package Lead Free Packing G or H P : SIP-4L L : Lead Free G : Green B : Bulk Device Lead-free Lead-free Lead-free Lead-free Lead-free ATS276G-PL-B-A S276G-PL-B-B ATS276G-PL-B-C ATS276H-PL-B-A ATS276H-PL-B-B ATS276H-PG-B-A TS276H-PG-B-B Notes: Package Code P P P P P P P Packaging (Note 2) SIP-4L SIP-4L SIP-4L SIP-4L SIP-4L SIP-4L SIP-4L Quantity 1000 1000 1000 1000 1000 1000 1000 Bulk Part Number Suffix -B -B -B -B -B -B -B Magnetic Characteristics A or B or C (Note 3) ʳ Magnetic Characteristics A B C A B A B 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied, see EU Directive 2002/95/EC Annex Notes. 2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. 3. Please refer to page 5 (Magnetic Characteristics table). ʳ ATS276 Rev. 1 1 of 9 www.diodes.com DECEMBER 2008 © Diodes Incorporatedʳ ATS276 COMPLEMENTARY OUTPUT HALL EFFECT LATCH ʳ Pin Assignments ( Top View ) 276 1 2 3 4 SIP-4L Pin Descriptions ʳ Name P/I/O Pin # Description Vcc P 1 Power Supply Input DO O 2 Output Pin DOB O 3 Output Pin GND P 4 Ground ʳ ʳ ʳ ʳ ʳ ʳ ʳ ʳ Block Diagram ʳ 1 VCC DO 2 REG. Hall Plate DOB Amp 3 GND 4 ʳ ʳ ATS276 Rev. 1 2 of 9 www.diodes.com DECEMBER 2008 © Diodes Incorporatedʳ ATS276 COMPLEMENTARY OUTPUT HALL EFFECT LATCH ʳ Typical Application Circuit ʳ ʳ 276 1 2 3 Coil 1 Coil 2 R1 R2 C1 C2 4 V cc R1 = R2 = 47O C1 = C2 = 2.2 uF The R , C value need to be fine tuned based on coils design.  Brush-Less DC Fan ʳ ʳ Absolute Maximum Ratings Symbol VCC VRCC B Ic TS PD TJ (TA = 25qC)ʳ Characteristics Values Supply Voltage Reverse VCC Polarity Voltage Magnetic Flux Density 20 -20 Unlimited 0.4 0.5 0.7 -65~+150 550 150 Continuous Hold Peak (Start Up) Output “on” Current Unit Storage Temperature Range S R PackageTPower Dissipation P k P Di i i Maximum Junction Temperature M i J i T V V A qC mW qC Recommended Operating Conditions Symbol Characteristic VCC Supply Voltage (Note 4) Operating Ambient Temperature (Note 5) TA Notes: Min Max Unit Operating Conditions 3.5 20 V Operating -20 85 qC 4. The output DO/DOB is switching as magnetic field change (S>300G, N