TPS61372L

The TPS61372L is a high-efficiency, low-quiescent current buck-boost converter designed for portable and battery-powered applications. It supports input voltages from 1.8 V to 5.5 V, enabling seamless operation across a wide range of battery conditions—from fully charged to deeply discharged states. The device delivers up to 300 mA of continuous output current with exceptional efficiency, minimizing power loss and extending battery life in mobile devices. This converter features a compact, low-profile package (SON-8) and integrates all necessary components, including the switch, control circuitry, and driver, reducing external component count and board space requirements. Its internal synchronous rectification improves efficiency by lowering conduction losses, while the ultra-low quiescent current of just 40 µA ensures minimal power consumption during standby or idle modes—ideal for always-on systems like wearables and IoT sensors. The TPS61372L offers programmable output voltage through an external resistor divider, allowing flexibility in system design to meet various load requirements. It includes built-in protection features such as over-current protection (OCP), thermal shutdown, and undervoltage lockout (UVLO), enhancing reliability under fault conditions. Additionally, the device supports soft-start functionality to limit inrush current and reduce stress on the input source during startup. Designed for applications requiring stable power delivery despite fluctuating input sources, the TPS61372L excels in scenarios such as single-cell battery operation, where the input voltage may drop below the required output level. It is commonly used in wireless earbuds, smartwatches, fitness trackers, and other compact electronics that demand efficient power management, long runtime, and minimal form factor. With its robust performance, small size, and comprehensive protection mechanisms, the TPS61372L provides a reliable solution for designers seeking high-efficiency power conversion in space-constrained and energy-sensitive environments.