TPS61033-Q1

The TPS61033-Q1 is a high-efficiency, synchronous buck-boost converter designed for automotive applications, featuring an input voltage range from 1.8 V to 5.5 V and capable of delivering up to 3 A of output current. It operates in both buck and boost modes seamlessly, maintaining stable output voltage regardless of input conditions, making it ideal for systems with fluctuating power sources such as battery-powered devices or automotive electrical systems. This device integrates a low-side N-channel MOSFET and employs a fixed-frequency PWM architecture with peak current-mode control, ensuring fast transient response and minimal output ripple. Its advanced control loop design allows for efficient operation across a wide load range, achieving up to 97% efficiency even at light loads. The converter supports adaptive switching frequency to reduce electromagnetic interference (EMI), while the internal compensation network simplifies design without requiring external components. Designed to meet AEC-Q100 Grade 1 qualification standards, the TPS61033-Q1 offers robust reliability under harsh environmental conditions, including temperature ranges from -40°C to +125°C. It includes comprehensive protection features such as thermal shutdown, overcurrent protection, undervoltage lockout, and short-circuit protection, enhancing system safety and longevity. Additionally, the device supports enable functionality and can be configured via an external resistor divider for precise output voltage setting. The TPS61033-Q1 is optimized for low quiescent current consumption—typically 15 µA in shutdown mode—which makes it suitable for always-on applications like sensor nodes, infotainment systems, and telematics modules. Its compact 3 mm × 3 mm SON package minimizes PCB footprint while enabling easy integration into space-constrained designs. The converter also supports soft-start functionality to limit inrush current during startup, preventing voltage droop on sensitive circuits. Common applications include powering microcontrollers, sensors, and communication modules in automotive environments where stable voltage regulation is critical despite varying battery conditions. It is particularly well-suited for use in ADAS systems, body control modules, and onboard diagnostics (OBD) interfaces, where reliable and efficient power conversion is essential for consistent performance and compliance with automotive standards.