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Product Spec Banner
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The RT9187B is a high-performance, 600mA LDO regulator, offering extremely high PSRR and ultra-low dropout. This chip is ideal for portable RF and wireless applications with demanding performance and space requirements. A noise reduction pin is also available for further reduction of output noise. Regulator ground current increases only slightly in dropout, further prolonging the battery life. The RT9187B also works well with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in hand-held wireless devices. </p>The RT9187B consumes less than 0.1μA in shutdown mode and has fast turn-on time for less than 40μs. The other features include ultra-low dropout voltage, high output accuracy, current limiting protection, and high ripple rejection ratio. The RT9187B is available in the SOT-23-5 package. </p>
RT9187B Typical Circuit
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<div class="spec-list"><ul class="lv1"><li>Ultra-Low-Noise for RF Application </li><li>Ultra-Fast Response in Line/Load Transient </li><li>Quick Start-Up (Typically 40μs) </li><li><0.1μA Standby Current When Shutdown </li><li>Low Dropout : 100mV at 500mA </li><li>Wide Operating Voltage Ranges : 2.5V to 5.5V </li><li>TTL-Logic-Controlled Shutdown Input </li><li>Current Limiting Protection </li><li>Thermal Shutdown Protection </li><li>Only 2.2μF Output Capacitor Required for Stability </li><li>High Power Supply Rejection Ratio </li><li>RoHS Compliant and Halogen Free </li></ul></div>
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RT9187B Ordering Information
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<div class="spec-list"><ul class="lv1"><li>CDMA/GSM Cellular Handsets </li><li>Battery-Powered Equipment </li><li>Laptop, Palmtops, Notebook Computers </li><li>Hand-Held Instruments </li><li>Mini PCI & PCI-Express Cards </li><li>PCMCIA & New Cards </li><li>Portable Information Appliances </li></ul></div>
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