MIC5311-DKYML-TR Microchip

MIC5311 LowQ Mode Dual 300mA LDO General Description Features Input voltage range: 2.5V to 5.5V The MIC5311 is a high performance, dual Cap low LowQ Mode dropout regulator offering ultra-low operating current - 7A total quiescent current and a second, even lower operating current mode, - 10mA output current capable LowQ mode LowQ mode, reducing operating current by 75%. - Logic level control with external pin Each regulator can source up to 300mA of output current maximum. Stable with ceramic output capacitor 2 LDO Outputs 300mA each Ideal for battery operated applications, the MIC5311 offers 1% accuracy, extremely low dropout voltage Tiny 3mm x 3mm MLF-10 package (60mV 150mA), and low ground current (typically Low dropout voltage of 60mV 150mA 28A total). When put into LowQ mode, the internal Ultra-low quiescent current of 28A total in Full current draw drops down to 7A total. The MIC5311 Current Mode also comes equipped with a TTL logic compatible High output accuracy enable pin that allows the part to be put into a zero-off- - 1.0% initial accuracy mode current state, drawing no current when disabled. - 2.0% over temperature The MIC5311 is a Cap design, operating with very Thermal Shutdown Protection small ceramic output capacitors for stability, reducing Current Limit Protection required board space and component cost. The MIC5311 is available in fixed output voltages in the Applications 3mm x 3mm MLF-10 leadless package. Data sheets Cellular/PCS phones and support documentation can be found on Micrels Wireless modems web site at www.micrel.com. PDAs MP3 Players Typical Application V V V IN OUT1 CORE V OUT2 EN1 V I/O EN2 Baseband LOWQ Processor BYP GND MIC5311-xxBML MLF and MicroLeadFrame are 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. MIC5311 Ordering Information Part Number Output Junction Temp. Range Package Voltage* Standard Pb-Free MIC5311-GMBML MIC5311-GMYML 1.8V/2.8V 40C to +125C 10-Pin 33 MLF MIC5311-DKBML MIC5311-DKYML 1.85V/2.6V 40C to +125C 10-Pin 33 MLF MIC5311-NLYML 2.85V/2.7V 40C to +125C 10-Pin 33 MLF Note: *Other Voltage options available between 1.25V and 5V. Contact Micrel for details. Pin Configuration 10 V V 1 OUT1 IN 9 V EN1 2 OUT2 8 NC EN2 3 7 NC LOWQ 4 6 GND BYP 5 MIC5311-xxBML (3x3) Pin Description Fixed Pin Name Pin Function 1 V Supply Input. (V and V are internally tied together) IN IN1 IN2 2 EN1 Enable Input (regulator 1). Active High Input. Logic High = On Logic Low = Off Do not leave floating 3 EN2 Enable Input (regulator 2). Active High Input. Logic High = On Logic Low = Off Do not leave floating 4 LowQ LowQ Mode. Active Low Input. Logic High = Full Power Mode Logic Low = Light Load Mode Do not leave floating. 5 BYP Reference Bypass: Connect external 0.01F to GND to reduce output noise. May be left open. 6 GND Ground. 7 NC 8 NC 9 V 2 Output of regulator 2 OUT 10 V 1 Output of regulator 1 OUT EP GND Ground. Internally connected to the Exposed Pad. 2 M9999-032706 March 2006 (408) 955-1690