MIC5253

MIC5253 Micrel MIC5253 100mA Low Noise µCap Teeny™ LDO General Description The MIC5253 is an efficient, CMOS voltage regulator optimized for ultra-low-noise applications. It offers 1.5% initial accuracy, extremely low dropout voltage (165mV at 100mA), and low ground current (typically 95µA at full load). The MIC5253 provides a very low noise output, ideal for RF applications where a clean voltage source is required. A noise bypass pin is also available for further reduction of output noise. Designed specifically for handheld and battery-powered devices, the MIC5253 provides a TTL-logic-compatible enable pin. When disabled, power consumption drops nearly to zero. The MIC5253 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in handheld wireless devices. Available in the Teeny™ SC-70-5 package, the MIC5253 offers a wide range of output voltages. Key features include current limit, thermal shutdown, faster transient response, and an active clamp to speed up device turn-off. Features Input voltage range: 2.7V to 5.5V Teeny™ SC-70-5 package Ultra-low output noise: 30µV(rms) 100mA continuous output current, 150mA peak current Stability with ceramic output capacitors Ultralow dropout: 165mV @ 100mA High output accuracy: 1.5% initial accuracy 3.0% over temperature Low ground current: 95µA TTL-Logic-controlled enable input “Zero” off-mode current Thermal shutdown and current limit protection ...