TPS61165DRVR – TEXAS INSTRUMENTS

The TPS61165DRVR is a 1.8V to 5.5V input, synchronous step-down converter from Texas Instruments, packaged in a tiny 6-pin WSON (WCSP-6) package. It features a highly efficient architecture utilizing a constant-frequency, current-mode control scheme, achieving efficiencies exceeding 90% across its operating range. This efficiency is particularly notable at light loads, thanks to its integrated PFM/PWM mode switching. The device boasts a quiescent current of only 20µA in shutdown mode and a low 100µA typical operating current, making it ideal for battery-powered applications. Output voltage is adjustable from 0.8V to 3.3V with a ±1.5% accuracy, programmable via an external resistor divider. Internal features include soft-start, overcurrent protection, and thermal shutdown, enhancing system robustness. Common applications include powering low-power microcontrollers, memory devices, and sensor nodes in portable electronics, wearables, and IoT devices. Its small footprint and high efficiency make it a superior choice when space and power consumption are critical design constraints, offering a significant advantage over larger, less efficient switching regulators. The device’s integrated protection features minimize the need for external components, simplifying the bill of materials and PCB layout.