TC1304 DataSheet
http://www.microchip.com/stellent/images/mchpsiteimages/dwnfolder.gif500 mA Synchronous Buck Regulator, +300 mA LDO with Power-Good OutputThe TC1304 combines a 500mA synchronous buck regulator and a 300mA low-dropout (LDO) regulator with a power-good monitor to provide a highly integrated solution for applications that require multiple supply voltages. The power-good function monitors the outputs of the Buck and LDO regulators and can provide sequenced startup and shutdown.
Parameter NameValue
Device DescriptionLin Reg and Power Mgt Combination
SW Reg OutputFixed or Adjsutable
Typical Active Supply (µA)38
Switching Frequency (kHz)2000
Output Current (mA)500
Output Voltage (V)0.8 to 4.5
Input Voltage Range (V)2.7 to 5.5
Features
Independent 300mA Low-Dropout Regulator
Power-good Monitor on the Buck and LDO Outputs
Sequenced Startup and Shutdown
Both Outputs Internally Compensated
Automatic PWM to PFM mode transition
Small 10-Pin 3x3 DFN and MSOP
Undervoltage Lockout (UVLO)
Output Short Circuit and Overtemperature Protection
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