MIC5268 150mA Cap CMOS LDO Regulator w/Power Good General Description Features The MIC5268 is an efficient, precise CMOS voltage Power Good indicator regulator with power good output. The MIC5268 offers Load independent, ultra-low ground current: 100A better than 3% initial accuracy, and constant ground 150mA output current current (typically 100A) over load. Current limiting The MIC5268 also works with low-ESR ceramic Thermal shutdown capacitors, reducing the amount of board space necessary Tight load and line regulation for power applications, critical in hand-held wireless devices. Zero off-mode current Key features include current limit, thermal shutdown, a Stability with low-ESR capacitors push-pull output for faster transient response, and an Fast transient response active clamp to speed up device turnoff. Available in the TTL-Logic-controlled enable input IttyBitty SOT-23-5 package, the MIC5268 is a fixed 1.2V regulator. Applications Data sheets and support documentation can be found on Processor power-up sequencing Micrels web site at www.micrel.com. Laptop, notebook, and palmtop computers PCMCIA V and V regulation/switching CC PP Ordering Information Part Number Marking Junction (1) Voltage Temp. Range Package Standard Pb-Free Standard Pb-Free MIC5268-1.2BM5 MIC5268-1.2YM5 L512 L512 1.2V 40 to +125C 5-Pin SOT-23 Note: 1. Other Voltage available. Contact Micrel Marketing for details. Typical Application 47k MIC5268-x.xBM5/YM5 V V IN OUT 15 2 C OUT 34 Enable Shutdown PG EN 1.2V Regulator with Power Good IttyBitty is a trademark of Micrel, Inc. Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. MIC5268 Pin Configuration MIC5268-x.x-BM5/YM5 5-Pin SOT-23 (M5) Pin Description Pin Number Pin Name Pin Function 1 IN Supply Input 2 GND Ground 3 EN Enable/Shutdown (Input): CMOS compatible input. Logic high = enable logic low = shutdown. Do not leave open. 4 PG Power Good Output 5 OUT Regulator Output M9999-091506 September 2006 2