MIC5245 Datasheet | Micrel Semiconductor

Micrel 150m A µCap CMOS LDO Regulator Preliminary Information General Description The MIC5245 is an efficient, precise CMOS voltage regulator optimized for ultra-low-noise applications. The MIC5245 offers better than 1% initial accuracy, extremely low dropout voltage (typically 150m V at 150m A) and constant ground current over load (typically 100µA). The MIC5245 provides a very low noise output, ideal for RF applications where quiet voltage sources are required. A noise bypass pin is also available for further reduction of output noise. Designed specifically for hand-held and battery-powered devices, the MIC5245 provides a TTL logic patible enable pin. When disabled, power consumption drops nearly to zero. The MIC5245 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 Itty Bitty™ SOT-23-5 and power MSO-8 packages, the MIC5245 also offers a range of fixed output voltages. Features - - - - - - - - - - - - - - - - - - - Ultralow dropout- 100m V @ 100m A Ultralow noise- 30µV(rms) Stability with tantalum or ceramic capacitors Load independent, ultralow ground current 150m A output current Current limiting Thermal Shutdown Tight load and line regulation “Zero” off-mode current Fast transient response TTL-Logic-controlled enable input Cellular phones and pagers Cellular accessories Battery-powered equipment Laptop, notebook, and palmtop puters PCMCIA VCC and VPP regulation/switching Consumer/personal electronics SMPS post-regulator/dc-to-dc modules High-efficiency linear power supplies Applications Ordering Information Part Number MIC5245-2.5BM5 MIC5245-2.7BM5 MIC5245-2.8BM5 MIC5245-2.85BM5 MIC5245-3.0BM5 MIC5245-3.1BM5 MIC5245-3.3BM5 MIC5245-3.3BMM Marking LS25 LS27 LS28 LS2J LS30 LS31...