TC1303B DataSheet

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  500 mA Synchronous Buck Regulator, +300 mA LDO with Power-Good Output


The TC1303B 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 output of the LDO regulator.
Parameter Name  Value
Device Description  Lin Reg and Power Mgt Combination
SW Reg Output  Fixed 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 LDO Output with 300mS Delay
Both Outputs Internally Compensated
Independent Shutdown for the Buck and LDO Outputs
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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