Datasheet Omnipolar Detection Hall IC (Dual Outputs for both S and N Pole Polarity Detection) BU52078GWZ General Description Key Specifications The BU52078GWZ is omnipolar Hall IC incorporating a V Voltage Range: 1.65V to 3.6V DD polarity determination circuit that enables separate Operate Point: 24.0mT(Typ) operation (output) of both the South and North poles. Hysteresis: 1.6mT(Typ) This Hall IC product can be in tablets, smart phones, and Period: 50ms(Typ) other applications in order to detect open and close of Supply Current (AVG): 5.0A (Typ) the cover. Output Type: CMOS And this Hall IC product can be in digital video cameras Operating Temperature Range: -40C to +85C and other applications involving display panels in order to detect the front/back location or determine the rotational Package W(Typ) x D(Typ) x H(Max) direction of the panel. UCSP35L1 0.80mm x 0.80mm x 0.40mm Features Omnipolar Detection (Polarity Detection for both S and N Poles with Separate, Dual Outputs) Micro Power Operation (Small Current Using Intermittent Operation Method) Ultra-compact CSP4 Package (UCSP35L1) Polarity Judgment and Separate Output on both Poles (OUT1=S-pole Output OUT2=N-pole Output) Applications Tablets, Smart Phones, Notebook Computers, Digital Video Cameras, Digital Still Cameras, etc. Typical Application Circuit, Block Diagram, Pin Configurations and Pin Descriptions V DD 0.1F B1 Adjust the bypass capacitor value as necessary, according to voltage TIMING noise conditions, etc. LOGIC HALL OUT1 B2 The CMOS output terminals ELEMENT enable direct connection to GND the PC, with no external V DD pull-up resistor required. A2 OUT2 A1 GND (TOP VIEW) (BOTTOM VIEW) Pin No. Pin Name Function A2 A1 A2 A1 A1 GND Ground A2 OUT2 Output (React to the north pole) B1 VDD Power supply B2 B1 B2 B1 B2 OUT1 Output (React to the south pole) Product structure : Silicon monolithic integrated circuit This product has no designed protection against radioactive rays . www.rohm.com TSZ02201-0M2M0F415030-1-2 2015 ROHM Co., Ltd. All rights reserved. 1/16 TSZ22111 14 001 24.Aug.2015 Rev.001 DYNAMIC OFFSET CANCELLATION SAMPLE & HOLD LATCH LATCH BU52078GWZ Contents General Description ........................................................................................................................................................................ 1 Features.......................................................................................................................................................................................... 1 Applications .................................................................................................................................................................................... 1 Key Specifications .......................................................................................................................................................................... 1 Package .......................................................................................................................................................................................... 1 Typical Application Circuit, Block Diagram, Pin Configurations and Pin Descriptions ..................................................................... 1 Absolute Maximum Ratings ............................................................................................................................................................ 3 Recommended Operating Conditions ............................................................................................................................................. 3 Magnetic, Electrical Characteristics ................................................................................................................................................ 3 Measurement Circuit ....................................................................................................................................................................... 4 Typical Performance Curves ........................................................................................................................................................... 4 Figure 6. Operate Point, Release Point vs Ambient Temperature ............................................................................................... 5 Figure 7. Operate Point, Release Point vs Supply Voltage ......................................................................................................... 5 Figure 8. Period vs Ambient Temperature ................................................................................................................................... 5 Figure 9. Period vs Supply Voltage ............................................................................................................................................. 5 Figure 10. Supply Current vs Ambient Temperature .................................................................................................................... 6 Figure 11. Supply Current vs Supply Voltage .............................................................................................................................. 6 Description of Operations ............................................................................................................................................................... 7 Intermittent Operation at Power ON .............................................................................................................................................. 10 Magnet Selection .......................................................................................................................................................................... 10 Slide-by Position Sensing ............................................................................................................................................................. 11 Position of the Hall Element .......................................................................................................................................................... 11 Footprint Dimensions .................................................................................................................................................................... 11 I/O Equivalence Circuit ................................................................................................................................................................. 11 Operational Notes ......................................................................................................................................................................... 12 Ordering Information ..................................................................................................................................................................... 14 Marking Diagrams ......................................................................................................................................................................... 14 Physical Dimension, Tape and Reel Information ........................................................................................................................... 15 Revision History ............................................................................................................................................................................ 16 www.rohm.com TSZ02201-0M2M0F415030-1-2 2015 ROHM Co., Ltd. All rights reserved. 2/16 TSZ22111 15 001 24.Aug.2015 Rev.001