MIC5258

MIC5258 Micrel MIC5258 150mA µCap CMOS LDO Regulator w/Power Good Final Information General Description The MIC5258 is an efficient, precise CMOS voltage regulator with power good output. The MIC5258 offers better than 3% initial accuracy, and constant ground current (typically 100µA)over load . The MIC5258 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 MIC5258 is a fixed 1.2V regulator. Features Power Good indicator Load independent, ultralow ground current: 100µA 150mA output current Current limiting Thermal shutdown Tight load and line regulation “Zero” off-mode current Stability with low-ESR capacitors Fast transient response TTL-Logic-controlled enable input Applications Processor power-up sequencing Laptop, notebook, and palmtop computers PCMCIA VCC and VPP regulation/switching Ordering Information Part Number MIC5258-1.2BM5 Marking LN12 Voltage 1.2 Junction Temp. Range* –40°C to +125°C Package SOT-23-5 Other voltages available. Contact Micrel for details. Typical Application 47k VIN MIC5258-x.xBM5 1 2 Enable Shutdown 3 4 5 VOUT COUT PG EN EN (pin 3) may be connected directly to IN (pin 1). Low-Noise Regulator Application IttyBitty...