データシートサーチシステム |
|
LM432BA3 データシート(PDF) 7 Page - Cystech Electonics Corp. |
|
LM432BA3 データシート(HTML) 7 Page - Cystech Electonics Corp. |
7 / 9 page CYStech Electronics Corp. Spec. No. : C504N3 Issued Date : 2003.03.21 Revised Date : 2005.10.07 Page No. : 7/9 LM432XA3/N3 CYStek Product Specification 15k 8.25k PL432 232 Iz OUT GND 10£gF Applications Information - Stability Selection of load capacitance when using LM432 as a shunt regulator When the LM432 is used as a shunt regulator, two options for selection of CL(see diagram on page 6) are recommended for optimal stability: 1) No load capacitance across the device, decouple at the load. 2) Large capacitance across the device, optimal decoupling at the load. The reason for this is that LM432 exhibits instability with capacitances in the range of 10nF to 1μF (approx.) at light cathode currents(up to 3mA typical). The device is less stable the lower the cathode voltage has been set for. Therefore while the device will be perfectly stable operating at a cathode current of (say) 10mA with a 0.1μF capacitor across it, it will oscillate transiently during start-up as the cathode current passes through the instability region. Selecting a very low (or preferably, no) capaci- tance, or alternatively a high capacitance(such as 10μF) will avoid this issue altogether. Since the user will probably wish to have local decoupling at the load anyway, the most cost effective method is to use no capacitance at all directly across the device. PCB trace/via resistance and inductance prevent the local load decoupling from causing the oscillation during the transient start-up phase. Note : if the LM432 is located right at the load, so the load decoupling capacitor is directly across it, then this capacitor will have to be ≤1nF or ≥10μF. Iz R1 R2 PL432 R CL LM432 LM432 |
同様の部品番号 - LM432BA3 |
|
同様の説明 - LM432BA3 |
|
|
リンク URL |
プライバシーポリシー |
ALLDATASHEET.JP |
ALLDATASHEETはお客様のビジネスに役立ちますか? [ DONATE ] |
Alldatasheetは | 広告 | お問い合わせ | プライバシーポリシー | リンク交換 | メーカーリスト 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 |