TC1303B

TC1303A/TC1303B/ TC1303C/TC1304 500 mA Synchronous Buck Regulator, + 300 mA LDO with Power-Good Output Features Dual-Output Regulator (500 mA Buck Regulator and 300 mA Low-Dropout Regulator) Power-Good Output with 300 ms Delay www.DataSheet4U.com Total Device Quiescent Current = 65 µA, Typ. Independent Shutdown for Buck and LDO Outputs (TC1303) Both Outputs Internally Compensated Synchronous Buck Regulator: - Over 90% Typical Efficiency - 2.0 MHz Fixed-Frequency PWM (Heavy Load) - Low Output Noise - Automatic PWM to PFM mode transition - Adjustable (0.8V to 4.5V) and Standard Fixed-Output Voltages (0.8V, 1.2V, 1.5V, 1.8V, 2.5V, 3.3V) Low-Dropout Regulator: - Low-Dropout Voltage = 137 mV Typ. @ 200 mA - Standard Fixed-Output Voltages (1.5V, 1.8V, 2.5V, 3.3V) Power-Good Function: - Monitors Buck Output Function (TC1303A) - Monitors LDO Output Function (TC1303B) - Monitors Both Buck and LDO Output Functions (TC1303C and TC1304) - 300 ms Delay Used for Processor Reset Sequenced Startup and Shutdown (TC1304) Small 10-pin 3X3 DFN or MSOP Package Options Operating Junction Temperature Range: - -40°C to +125°C Undervoltage Lockout (UVLO) Output Short Circuit Protection Overtemperature Protection Description The TC1303/TC1304 combines a 500 mA synchronous buck regulator and 300 mA Low-Dropout Regulator (LDO) with a power-good monitor to provide a highly integrated solution for devices that require multiple supply voltages. The unique combination of an inte...