TPS61088-Q1

The TPS61088-Q1 is a high-efficiency, synchronous buck-boost converter designed for automotive and industrial applications requiring stable power regulation across varying input voltages. It supports an input voltage range from 1.8 V to 5.5 V, making it ideal for systems powered by single-cell lithium-ion batteries or multiple-cell configurations. The device operates with a fixed switching frequency of 2 MHz, enabling the use of small external components while maintaining excellent efficiency—up to 95%—even under light-load conditions. This converter features integrated high-side and low-side MOSFETs, which reduce component count and board space while enhancing thermal performance. Its architecture allows seamless transition between buck (step-down) and boost (step-up) modes, ensuring continuous output regulation regardless of whether the input voltage is above or below the desired output level. The output voltage can be precisely set via an external resistor divider, offering flexibility in system design. Designed for robust operation in harsh environments, the TPS61088-Q1 meets AEC-Q100 Grade 1 qualification standards, ensuring reliability in automotive-grade applications such as infotainment systems, ADAS sensors, and telematics modules. It includes comprehensive protection features including over-current protection (OCP), thermal shutdown, and undervoltage lockout (UVLO), which enhance system safety and prevent damage under fault conditions. The device also offers a low quiescent current of just 30 µA in shutdown mode, minimizing power loss during idle periods—an essential feature for battery-powered systems where energy efficiency is critical. Additionally, its compact 8-pin SON package enables space-efficient integration into densely populated PCB designs. In terms of control, the TPS61088-Q1 supports both PWM and PFM modes automatically based on load conditions, optimizing efficiency across the entire operating range. It includes a soft-start function to limit inrush current during startup, reducing stress on the input source and improving system stability. The converter’s wide operating temperature range—from -40°C to +125°C—further ensures reliable performance in extreme environmental conditions typical in automotive and industrial settings.