TPS61371

The TPS61371 is a fully-integrated synchronous boost converter with the load disconnect built-in. The device supports output voltage up to 16V with a 3.8A current limit. The output voltage can be changed either by the feedback resistors or by the I2C controlled reference voltage VREF. The input voltage ranges from 2.7V to 5.5V supporting applications powered by a single-cell Lithium-ion battery or 5V bus.

The TPS61371 uses the peak current mode with the adaptive off-time control topology. The device works in PWM operation of 1.5MHz at moderate-to-heavy loads. At the light load conditions, the device can be configured in either auto PFM or forced PWM operation. The mode is determined by the connection of the MODE pin and the I2C register. Auto PFM mode has the benefit of high efficiency at light load while forced PWM operation keeps the switching frequency constant across the whole load range. The TPS61371 has a soft start to minimize the inrush current during start-up. The TPS61371 features of the load disconnect during shutdown and provides latch type overvoltage and output short protections. In addition, the device implements thermal shutdown protection.