Datasheet Omnipolar Detection Hall IC (Dual Outputs for both S and N Pole Polarity Detection) BU52737GWZ General Description Key Specifications The omnipolar detection Hall IC incorporating a polarity VDD Voltage Range: 2.5 V to 4.5 V determination circuit enables separate operation (output) of Operate Point: 15 mT (Typ) both the South and North poles. Using a magnet and the Hysteresis: 2 mT (Typ) Hall IC, detection of open and close of the cover are Period: 50 ms (Typ) possible in smart phones and tablets, and detection of Supply Current (AVG): 0.8 A (Typ) putting wireless earphones in a case, and detection of Output Type: CMOS front/back side or rotational direction are possible in digital Operating Temperature Range: -40 C to +85 C cameras and other applications involving display panels. Package W (Typ) x D (Typ) x H (Max) Features UCSP35L1 0.80 mm x 0.80 mm x 0.40 mm Omnipolar Detection (OUT1 = S-pole Detection OUT2 = N-pole Detection) Micro Power Operation (Small Current Using Intermittent Operation Method) Ultra-compact Package Applications Smart Phones, Tablets, Wireless Earphones, Notebook Computers, Digital Cameras, etc. Typical Application Circuit and Block Diagram VDD 0.1 F TIMING LOGIC Adjust the bypass capacitor value as necessary, HALL OUT1 according to power supply noise conditions, etc. ELEMENT GND VDD OUT2 GND Pin Configuration Pin Descriptions Pin Pin Name Function TOP VIEW No. GND OUT2 A1 GND Ground A1 A2 A2 OUT2 Output (Detect to the north pole) (Note 1) B1 VDD Power supply B2 Output (Detect to the south pole) OUT1 B1 B2 (Note 1) Dispose a bypass capacitor between VDD and GND. VDD OUT1 Product structure: Silicon integrated circuit This product has no designed protection against radioactive rays .w ww.rohm.com TSZ02201-0M2M0F421060-1-2 2021 ROHM Co., Ltd. All rights reserved. 1/14 TSZ22111 14 001 05.Aug.2021 Rev.001 DYNAMIC OFFSET CANCELLATION SAMPLE & HOLD LATCH LATCH BU52737GWZ Contents General Description ........................................................................................................................................................................ 1 Features.......................................................................................................................................................................................... 1 Key Specifications .......................................................................................................................................................................... 1 Package .......................................................................................................................................................................................... 1 Applications .................................................................................................................................................................................... 1 Typical Application Circuit and Block Diagram................................................................................................................................ 1 Pin Descriptions .............................................................................................................................................................................. 1 Pin Configuration ............................................................................................................................................................................ 1 Absolute Maximum Ratings ............................................................................................................................................................ 3 Recommended Operating Conditions ............................................................................................................................................. 3 Magnetic and Electrical Characteristics .......................................................................................................................................... 3 Measurement Circuit ....................................................................................................................................................................... 4 Typical Performance Curves ........................................................................................................................................................... 5 Figure 5. Operate Point, Release Point vs Ambient Temperature ................................................................................................ 5 Figure 6. Operate Point, Release Point vs Supply Voltage ........................................................................................................... 5 Figure 7. Period vs Ambient Temperature .................................................................................................................................... 5 Figure 8. Period vs Supply Voltage ............................................................................................................................................... 5 Figure 9. Supply Current vs Ambient Temperature ....................................................................................................................... 6 Figure 10. Supply Current vs Supply Voltage ............................................................................................................................... 6 Description of Operations ............................................................................................................................................................... 7 Intermittent Operation at Power ON .............................................................................................................................................. 10 Magnet Selection .......................................................................................................................................................................... 10 Position of the Hall Element .......................................................................................................................................................... 10 Output Equivalence Circuit ........................................................................................................................................................... 10 Operational Notes ......................................................................................................................................................................... 11 Ordering Information ..................................................................................................................................................................... 12 Marking Diagram .......................................................................................................................................................................... 12 Physical Dimension and Packing Information ............................................................................................................................... 13 Revision History ............................................................................................................................................................................ 14 www.rohm.com TSZ02201-0M2M0F421060-1-2 2021 ROHM Co., Ltd. All rights reserved. 2/14 TSZ22111 15 001 05.Aug.2021 Rev.001