MIC5249 300 mA Cap LDO with Programmable Power-On Reset Delay Features General Description 300 mA Output Current The MIC5249 is an efficient, precise 300 mA CMOS High PSRR: 65 dB 120 Hz voltage regulator with power on reset (POR) delay Stable with Ceramic Output Capacitor which can be implemented via an external capacitor. It Power-on-Reset (POR) Output with Adjustable offers 1% initial accuracy, extremely low dropout Delay Time voltage (typically 400 mV 300 mA), and low ground High Output Accuracy: current (typically 85 mA) over load. - 1.0% Initial Accuracy Designed specifically for noise-critical applications in - 3.0% Over Temperature hand-held or battery-powered devices, the MIC5249 comes equipped with a noise reduction feature to filter Low Dropout Voltage of 340 mV 300 mA the output noise via an external capacitor. Other Low Quiescent Current: 85 A features of the MIC5249 include a logic-compatible Zero Current Shutdown Mode enable pin, current limit, thermal shutdown, ultra-fast Thermal Shutdown and Current-Limit Protection transient response, and an active clamp to speed up Tiny MSOP-8 Package device turnoff. Applications The MIC5249 also works with low-ESR ceramic Cellular Phones capacitors, reducing the amount of board space PDAs necessary for power applications, critical in hand-held wireless devices. Fiber Optic Modules The MIC5249 is available in the MSOP-8 package. Package Type MIC5249 8-Lead MSOP (MM) (Top View) C1BYP 8 ENABLE DELAY 2 7 RESET GND 3 6 NC VIN 4 5 VOUT 2021 Microchip Technology Inc. and its subsidiaries DS20006602A-page 1MIC5249 Typical Application Circuit Ultra-Low Noise Application Functional Block Diagram DS20006602A-page 2 2021 Microchip Technology Inc. and its subsidiaries