MIC5307-1.8YD5-TR Microchip

MIC5307 300mA Micropower Cap Baseband LDO General Description Features The MIC5307 is a micropower, Cap low dropout regulator Input voltage range: 2.4V to 5.5V designed for optimal performance where smaller packages Ultra-low IQ: Only 20A operating current are required. It is capable of sourcing 300mA of output Stable with ceramic output capacitor current while only drawing 20A of operating current. This Low dropout voltage of 120mV 300mA high performance LDO offers fast transient response and good PSRR while consuming a minimum of current. High output accuracy 1.0% initial accuracy Ideal for battery operated applications the MIC5307 offers 1% initial accuracy, extremely low dropout voltage and is 2.0% over temperature equipped with a TTL logic compatible enable pin. The Thermal Shutdown Protection MIC5307 can be put into a zero-off-mode current state, Current Limit Protection drawing no current when disabled. The MIC5307 is a Cap design, operating with very small Applications ceramic output capacitors for stability, reducing required Digital Logic Power Supply board space and component cost. Stand-by power supply The MIC5307 is available in fixed output voltages in the Thin SOT23-5 package and the 6-pin 2mm x 2mm Thin Cellular phones MLF package. PDAs Data sheets and support documentation can be found on Portable electronics Micrels web site at www.micrel.com. Notebook PCs Typical Application Ground Pin Current vs. Temperature 26 24 MIC5307 22 300mA 20 VIN VOUT 100A 18 16 EN 14 12 GND 10 1F 2.2F 8 6 V = V + 1V IN OUT 4 V = 2.8V OUT 2 C = 2.2F OUT 0 20 40 60 80 TEMPERATURE (C) MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc. Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. MIC5307 Block Diagram VIN VOUT EN Quick- V REF Start Error LDO Amp Thermal Shutdown Current Limit GND M9999-082407-B August 2007 2