The PT6111 is a Power Management Integrated Circuit (PMIC) manufactured by CR-PowTech in a 24-pin Quad Flat No-Lead (QFN) package. It is RoHS compliant and designed for use in lithium-ion or lithium-ion polymer battery applications.The PT6111 is a high-performance, highly integrated PMIC that is optimized to provide a complete power solution for lithium-ion and lithium-ion polymer battery applications. It includes an analog-to-digital converter (ADC), four voltage regulators, an integrated boost converter, and an integrated LED control circuit. The four regulators include two buck regulators, one boost regulator, and one battery charger. The regulator outputs are optimized to provide reliable and efficient power to the analog, digital, and RF circuits in the battery-powered device. The built-in ADC can simultaneously measure the voltage of each regulator's output and monitor the temperature of the battery to ensure safe operating conditions in the system. The PT6111 also includes a dedicated boost converter that can quickly provide extra power for peak current transient situations. Finally, the LED control circuit allows the user to monitor the state of the system's battery and power output.