6A, 17V, ACOT High-Efficiency Synchronous Step-Down Converter

The RTQ2807A is a high-performance, synchronous step-down converter that can deliver up to 6A output current with a wide input supply voltage range from 3.5V to 17V. The device integrates low R_DSON power MOSFETs, an accurate 0.9V ± 1% reference over the full operating junction temperature range, and an integrated diode for the bootstrap circuit, offering a very compact solution.
The RTQ2807A adopts an Advanced Constant On-Time (ACOT^®) control architecture that provides excellent transient performance and reduces the count of external components. In steady states, the ACOT^® can operate at nearly constant switching frequency across varying line, load, and output voltage ranges, which making the EMI filter design easier.
The device offers a variety of functions that enhance design flexibility. The selectable switching frequency, current limit level, and PWM operation modes make the RTQ2807A easy-to-use across a wide range of applications. An independent enable control input pin and a power-good indicator are also provided for simplified sequencing control. The device provides a programmable soft-start-time by an external capacitor connected to the SS/TR pin to control the inrush current during startup.
The RTQ2807A provides comprehensive protection functions, including input undervoltage lockout, output undervoltage protection, output overvoltage protection, overcurrent protection, and over-temperature protection. The RTQ2807A is available in a thermally enhanced WQFN-14TL 2x3 (FC) package. The recommended junction temperature range is from -40°C to 150°C.