数据搜索系统,热门电子元器件搜索 |
|
BU4323 数据表(PDF) 8 Page - Rohm |
|
BU4323 数据表(HTML) 8 Page - Rohm |
8 / 12 page Technical Note 8/11 BU42□□G series, BU42□□F series, BU42□□FVE series, BU43□□G series, BU43□□F series, BU43□□FVE series www.rohm.com 2009.11 - Rev.C © 2009 ROHM Co., Ltd. All rights reserved. ● Notes for use 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 that 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 to reject noise between VDD pin and GND with 1uF over and between VOUT pin and GND with 1000pF. 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 is 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. Case of needless Delay time, recommended to insert more 470kΩ resister between VDD and CT. Recommended value of RL Resistar is over 50kΩ (VDET=1.5~4.8V),over 100kΩ (VDET=0.9~1.4V). 12. 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 10MΩ leakage is assumed between the CT terminal and the GND terminal, 1MΩ connection between the CT terminal and the VDD terminal would be recommended. Also, 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. The value of RCT depends on the external resistor that is connected to CT terminal, so please consider the delay time that is decided by τ × RCT × CCT changes. |
类似零件编号 - BU4323 |
|
类似说明 - BU4323 |
|
|
链接网址 |
隐私政策 |
ALLDATASHEETCN.COM |
ALLDATASHEET是否为您带来帮助? [ DONATE ] |
关于 Alldatasheet | 广告服务 | 联系我们 | 隐私政策 | 链接交换 | 制造商名单 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 |