MIC5246

MIC5246 Micrel MIC5246 150mA µCap CMOS LDO Regulator Preliminary Information General Description The MIC5246 is an efficient, precise CMOS voltage regulator optimized for low-noise applications. The MIC5246 offers better than 1% initial accuracy, extremely-low-dropout voltage (typically 150mV at 150mA) and constant ground current (typically 85µA)over load . The MIC5246 features an error flag that indicates an output fault condition such as overcurrent, thermal shutdown and dropout. The MIC5246 provides a very low noise output, ideal for RF applications where quiet voltage sources are required. Designed specifically for hand-held and battery-powered devices, the MIC5246 provides a TTL-logic-compatible enable pin. When disabled, power consumption drops nearly to zero. The MIC5246 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in hand-held wireless devices. Key features include current limit, thermal shutdown, a pushpull output for faster transient response, and an active clamp to speed up device turnoff. Available in the IttyBitty™ SOT-23-5 package, the MIC5246 also offers a range of fixed output voltages. Features Error flag indicates fault condition Ultralow dropout—100mV @ 100mA Load independent, ultralow ground current: 85µA 150mA output current Current limiting Thermal Shutdown Tight load and line regulation “Zero” off-mode current Stability with low-ESR cap...