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STRUCTURE TYPE PRODUCT FEATURES
Silicon Monolithic Integrated Circuit
BU52012 NVX
Hall effect Switch 1) Unipolar detection (S-pole) 2) High sensitivity (BOP TYP 3.0mT) 3) Low supply current 4) Small package 5) CMOS output type
ABSOLUTE MAXIMUM RATINGS (Ta=25) PARAMETERS SYMBOL Power Supply Voltage Output Current Power Dissipation Operating Temperature Range VDD IOUT Pd Topr
LIMIT -0.1+4.5 0.5 2049
2 1
UNIT V mA mW
-40+85
Storage Temperature Range Tstg -40+125 1. Not to exceed Pd 2. Reduced by 20.49mW for each increase in Ta of 1 over 25 mounted on 70mmx70mmx1.6mm Glass-epoxy PCB
OPERATING CONDITIONS (Ta=-40+85) PARAMETERS SYMBOL MIN Power Supply Voltage VDD 1.65
TYP 3.00
MAX 3.60
UNIT V
Radiation hardiness is not designed.
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MAGNETIC, ELECTRICAL CHARACTERISTICS (Unless otherwise specified, VDD=3.00V, Ta=25)
PARAMETERS Operate Point Release Point Period Output High Voltage Output Low Voltage Supply Current1 Supply Current2
SYMBOL BopS BrpS Tp VOH VOL IDD1AVG IDD2AVG
MIN 0.6 VDD -0.2 -
LIMIT TYP 3.0 2.1 50 3.5 8.0
MAX 5.0 100 0.2 5.5 12.5
UNIT mT mT ms V V A A BCONDITIONS
3
IOUT=-0.5mA
3
IOUT=+0.5mA VDD=1.8V,Average VDD=3.0V,Average
3. BMagnetic Flux Density 1mT10Gauss Positive ("+") polarity flux is defined as the magnetic flux from south pole which is direct toward to the branded face of the sensor. After applying power supply, it takes one cycle of period (TP) to become definite output.
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PACKAGE OUTLINES 4 3
B
Lot No.
N
1
2
1
2
4
3
SSON004X1216(UNIT:mm)
PIN No.PIN NAME PIN No. PIN NAME 1 2 3 4 OUT GND N.C. VDD
FUNCTION OUTPUT GOUND
COMMENT
OPEN or Short to GND. POWER SUPPLY
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BLOCK DIAGRAM
DD
TIMING LOGIC OFFSET CANCELLATION HALL ELEMENT DYNAMIC
SAMPLE & HOLD
x
LATCH
OUT
GND
CAUTIONS ON USE 1) Absolute Maximum Ratings
An excess in the absolute maximum ratings, such as supply voltage, temperature range of operating conditions, etc., can break down devices, thus making impossible to identify breaking mode such as a short circuit or an open circuit. If any special mode exceeding the absolute maximum ratings is assumed, consideration should be given to take physical safety measures including the use of fuses, etc.
2) GND voltage
Make setting of the potential of the GND terminal so that it will be maintained at the minimum in any operating state.
3) Thermal design
Perform thermal design in which there are adequate margins by taking into account the permissible dissipation (Pd) in actual states of use. 4) Pin short and mistake fitting When mounting the IC on the PCB, pay attention to the orientation of the IC. If there is a placement mistake, the IC may be burned up.
5) Operation in strong electric field
Be noted that using ICs in the strong electric field can malfunction them.
6) Mutual impedance Use short and wide wiring tracks for the power supply and ground to keep the mutual impedance as small as possible. Use a capacitor to keep ripple to a minimum. 7) Ground wiring pattern If small-signal GND and large-current GND are provided, It will be recommended to separate the large-current GND pattern from the small-signal GND pattern and establish a single ground at the reference point of the set PCB so that resistance to the wiring pattern and voltage fluctuations due to a large current will cause no fluctuations in voltages of the small-signal GND. Pay attention not to cause fluctuations in the GND wiring pattern of external parts as well. 8) Power source design Since the IC performs intermittent operation, it has peak current when it's ON. Please taking that into account and under examine adequate evaluations when designing the power source. 9 Please avoid having potential overstress from PCB material, strength, mounting positions. If you had any further questions or concerns, please contact your Rohm sales and affiliate.
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Notice
Notes
No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. Examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production. Great care was taken in ensuring the accuracy of the information specified in this document. However, should you incur any damage arising from any inaccuracy or misprint of such information, ROHM shall bear no responsibility for such damage. The technical information specified herein is intended only to show the typical functions of and examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by ROHM and other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. The Products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices). The Products specified in this document are not designed to be radiation tolerant. While ROHM always makes efforts to enhance the quality and reliability of its Products, a Product may fail or malfunction for a variety of reasons. Please be sure to implement in your equipment using the Products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM shall bear no responsibility whatsoever for your use of any Product outside of the prescribed scope or not in accordance with the instruction manual. The Products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuelcontroller or other safety device). ROHM shall bear no responsibility in any way for use of any of the Products for the above special purposes. If a Product is intended to be used for any such special purpose, please contact a ROHM sales representative before purchasing. If you intend to export or ship overseas any Product or technology specified herein that may be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to obtain a license or permit under the Law.
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