MIC5315 Low Voltage Dual 300mA LDO with Voltage Select General Description Features The MIC5315 is a high performance, dual low input 300mA output current for each LDO voltage, low dropout regulator with voltage select. Major Dual low voltage regulator inputs: 1.7V to 5.5V features include two 300mA LDOs, input voltage down to Low output voltage range: 0.8V to 2.0V 1.7V, ultra low drop out of 85mV at full load, and voltage Ultra-low dropout voltage of 85mV 300mA select. Each LDO has its own low voltage input for system flexibility. The low input voltages and low drop out Voltage select function operation provides high efficiency by reducing the input to Stable with 1F ceramic output capacitors output voltage step which minimizes the regulator power Very fast transient response loss. Voltage select is incorporated into the second output, Thermal shutdown and current limit protection which reduces the output voltage to a lower level to further Tiny 10-pin 2mm x 2mm Thin MLF package save power while in stand-by mode. Ideal for battery operated applications the MIC5315 offers 1% accuracy and low ground current to increase light load Applications efficiency. The MIC5315 can also be put into a zero-off- Mobile Phones mode current state, drawing virtually no current when disabled. GPS and Navigation Devices The MIC5315 is available in fixed output voltages in the Portable Media Players 10-pin 2mm x 2mm Thin MLF leadless package. Digital still and video cameras Data sheets and support documentation can be found on PDAs Micrels web site at: www.micrel.com. Portable electronics Typical Application VI/O MIC5315-xxyYMT MIC23031-1.8YMT VBAT DC-to-DC VIN1 VOUT1 VCORE1 Converter VIN2 VBIAS VOUT2 VCORE2 /VSC2 CIN CBIAS 1F 1F EN1 CBYP 1F 1F EN2 Processor 10nF GND 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. MIC5315 Ordering Information (1) (2) (2) (3) Part Number Manufacturing Marking VOUT1 VOUT2 Junction Package Part Number Temp. Range 10-Pin 2mm x 2mm MIC5315-1.5/1.2/1.0YMT MIC5315-F4CYMT F4C 1.5V 1.2V/1.0V 40C to +125C Thin MLF 10-Pin 2mm x 2mm MIC5315-1.5/1.3/1.0YMT MIC5315-F5CYMT F5C 1.5V 1.3V/1.0V 40C to +125C Thin MLF 10-Pin 2mm x 2mm MIC5315-1.8/1.6/1.1YMT MIC5315-GW3YMT GW3 1.8V 1.6V/1.1V 40C to +125C Thin MLF 10-Pin 2mm x 2mm MIC5315-1.8/1.8/1.0YMT MIC5315-GGCYMT GGC 1.8V 1.8V/1.0V 40C to +125C Thin MLF Notes: 1. Pin 1 identifier = . 2. For other voltage option, contact Micrel Marketing for details 3. MLF is a GREEN RoHS compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free. Pin Configuration VIN1 1 10 VOUT1 VIN2 2 9 VOUT2 VBIAS 3 8 /VSC2 EN1 4 7 CBYP EN2 5 6 GND 10-Pin 2mm 2mm Thin MLF (MT) Pin Description Pin Number Pin Name Pin Function 1 VIN1 Voltage Input for LDO1. 2 VIN2 Voltage Input for LDO2. 3 VBIAS Bias Input Voltage. 4 EN1 Enable Input for LDO1. Active High Input. Logic High = On Logic Low = Off Do not leave floating. 5 EN2 Enable Input for LDO2. Active High Input. Logic High = On Logic Low = Off Do not leave floating. 6 GND Ground. 7 CBYP Bypass: Connect a capacitor to ground to improve output noise and PSRR. 8 /VSC2 Voltage Select Input for LDO2. Active Low Input. Logic High = Full Output Voltage Logic Low = Low Output Voltage. Do not leave floating. 9 VOUT2 Output of regulator 2. 10 VOUT1 Output of regulator 1. M9999-070208-A July 2008 2