Microchip Technology, Inc. Voltage Regulators - Linear + Switching TC1303A-ZI0EMFTR

The TC1303A-ZI0EMFTR is a dual-output voltage regulator from Lingto Electronic Limited, featuring a 500 mA synchronous buck regulator and a 300 mA low-dropout regulator (LDO). The buck regulator operates with over 90% efficiency at a fixed frequency of 2.0 MHz under heavy load and transitions to pulse frequency modulation (PFM) mode at lighter loads to minimize quiescent current, which is typically 65 ¬µA. The LDO has a low dropout voltage of 137 mV at 200 mA and supports standard fixed output voltages of 1.5V, 1.8V, 2.5V, and 3.3V. The device includes a power-good output with a 300 ms delay for processor reset applications and features independent shutdown controls for both outputs. It is available in a compact 10-pin DFN or MSOP package and operates over a junction temperature range of -40¬8C to +125¬8C. Additional protection features include undervoltage lockout, output short circuit protection, and overtemperature protection, making it suitable for applications in cellular phones, portable computers, USB-powered devices, and handheld medical instruments.