TITPS61291DRVR
Overview
The TPS61291DRVR is a high-efficiency boost converter designed for low-power applications where battery life is critical. It features a unique integrated bypass mode that allows the input voltage to be connected directly to the output with minimal loss, effectively bypassing the boost circuit when not needed. With a typical quiescent current of 5.7uA and support for input voltages as low as 0.9V, it is optimized for systems powered by single-cell alkaline, NiCd, NiMH, or Li-ion batteries.
Why Choose This Part
The primary advantage is the 5.7uA typical quiescent current and the bypass mode, which reduces power consumption to 15nA in sleep. The pin-programmable output voltages (2.5V, 3.0V, 3.3V) eliminate the need for external feedback resistors, reducing BOM count and leakage currents. It also includes a controlled bypass transition that prevents output voltage drops during mode switching.
Applications
Key Specifications
Getting Started
Evaluation can be performed using the TPS61291EVM-569 evaluation module to test bypass and boost transitions. Design parameters can be calculated using TI WEBENCH Power Designer, ensuring the selected inductor can handle the 700mA switch current limit. Connect the VSEL pins to GND or VOUT to select between the three predefined output voltages.
