LDO没有输出电容

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LDO没有输出电容 [复制链接]

New LDO Offers High Speed Performance without Output Capacitor

The new XC6503 series from Torex, integrates internal phase compensation circuitry, removing the need for expensive output capacitors and dramatically reducing the necessary PCB layout area.   Even with no capacitor, the XC6503 can deliver output currents up to 500mA and is readily available with fixed output Voltages from 1.2V to 5.0V in 0.05V increments.   Performance is always important for an LDO and the XC6503 offers fast transient response and high PSRR (55dB @ 1kHz) whilst consuming only 15uA in operation and less than 0.1uA in standby mode.  The voltage-drop is also optimised to maximise battery life with only 300mV required at 500mA. The XC6503 is also very safe, with integrated short circuit protection; thermal shutdown and built-in current limiter.  This clever LDO can also work with an Output Capacitor if required and includes an optional CL discharge function to immediately discharge of the Output Capacitor, ensuring that the VOUT pin drops down to ground quickly, should the XC6503 be turned off via the CE pin.   The super small USP-4 package, measuring only 1.2mm x 1.6mm x 0.6mm, makes the XC6503 ideal for space conscious applications. But when additional power dissipation is required, larger SOT25, SOT89-5 or TO252 packages are also readily available.   More in depth information about the XC6503 LDO voltage regulators, which includes a supporting datasheet, can be found directly on Torex Semiconductor’s website at:   www.torex-europe.com/products/range/320

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这个比较高级，但这个LDO输出能力太小，最大只有500豪安。这个LDO关键是内部有相位补偿电路，所以这个LDO不需要昂贵的输出电容。