Electronic Components Datasheet Search |
|
BD46471 Datasheet(PDF) 8 Page - Rohm |
|
BD46471 Datasheet(HTML) 8 Page - Rohm |
8 / 10 page Technical Note 8/9 BD45 □□□G, BD46□□□G series www.rohm.com 2009.05 - Rev.C © 2009 ROHM Co., Ltd. All rights reserved. Operation Notes (1) Absolute maximum range Absolute Maximum Ratings are those values beyond which the life of a device may be destroyed. We cannot be defined the failure mode, such as short mode or open mode. Therefore a physical security countermeasure, like fuse, is to be given when a specific mode to be beyond absolute maximum ratings is considered. (2) GND potential GND terminal should be a lowest voltage potential every state. Please make sure all pins, which are over ground even if, include transient feature. (3) Electrical Characteristics Be sure to check the electrical characteristics that are one the tentative specification will be changed by temperature, supply voltage, and external circuit. (4) Bypass Capacitor for Noise Rejection Please put into the capacitor of 1µF or more between VDD pin and GND, and the capacitor of about 1000pF between VOUT pin and GND, to reject noise. If extremely big capacitor is used, transient response might be late. Please confirm sufficiently for the point. (5) Short Circuit between Terminal and Soldering Don’t short-circuit between Output pin and VDD pin, Output pin and GND pin, or VDD pin and GND pin. When soldering the IC on circuit board, please be unusually cautious about the orientation and the position of the IC. When the orientation is mistaken the IC may be destroyed. (6) Electromagnetic Field Mal-function may happen when the device is used in the strong electromagnetic field. (7) The VDD line inpedance might cause oscillation because of the detection current. (8) A VDD -GND capacitor (as close connection as possible) should be used in high VDD line impedance condition. (9) Lower than the mininum input voltage makes the VOUT high impedance, and it must be VDD in pull up (VDD) condition. (10) This IC has extremely high impedance terminals. Small leak current due to the uncleanness of PCB surface might cause unexpected operations. Application values in these conditions should be selected carefully. If the leakage of about 1M Ω is assumed between the ER terminal and the GND terminal, 100kΩ connection between the ER terminal and the VDD terminal would be recommended. If the leakage is assumed between the VOUT terminal and the GND terminal, the pull-up resistor should be less than 1/10 of the assumed leak resistance. (11) External parameters The recommended parameter range for RL is 50k Ω~1MΩ. There are many factors (board layout, etc) that can affect characteristics. Please verify and confirm using practical applications. (12) Power on reset operation Please note that the power on reset output varies with the VDD rise up time. Please verify the actual operation. (13) Precautions for board inspection Connecting low-impedance capacitors to run inspections with the board may produce stress on the IC. Therefore, be certain to use proper discharge procedure before each process of the test operation. To prevent electrostatic accumulation and discharge in the assembly process, thoroughly ground yourself and any equipment that could sustain ESD damage, and continue observing ESD-prevention procedures in all handing, transfer and storage operations. Before attempting to connect components to the test setup, make certain that the power supply is OFF. Likewise, be sure the power supply is OFF before removing any component connected to the test setup. (14) When the power supply, is turned on because of in certain cases, momentary Rash-current flow into the IC at the logic unsettled, the couple capacitance, GND pattern of width and leading line must be considered. |
Similar Part No. - BD46471 |
|
Similar Description - BD46471 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |