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The information presented in this cross reference is based on TOSHIBA's selection criteria and should be treated as a suggestion only. Please carefully review the latest versions of all relevant information on the TOSHIBA products, including without limitation data sheets and validate all operating parameters of the TOSHIBA products to ensure that the suggested TOSHIBA products are truly compatible with your design and application.
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如因负载端IC的工作模式改变而导致电流骤变,LDO稳压器的输出电压会瞬间下降。这种情况下,LDO稳压器会提供负反馈,以将VOUT恢复至正常电平。但响应缓慢的LDO稳压器的折返恢复时间也比较长。如果输入电压降至下限值以下,则负载侧IC可能会发生故障。
使用具有优异负载瞬态响应的LDO稳压器有助于减小VOUT的下降并缩短恢复时间,从而防止负载端IC出现故障。
也可通过增加输出电容器的值来减小VOUT的下降。但在这种情况下,应注意LDO稳压器导通后的上升时间、振荡和浪涌电流。。
关于LDO的负载瞬态响应,请参阅
关于具有快速负载瞬态响应的LDO稳压器,请点击:
关于其它LDO稳压器,请访问LDO稳压器主页: