RTQ2105-QA Datasheet | Richtek

Description The RTQ2105-QA is a 3A, high-efficiency, currentmode synchronous buck converter optimized for automotive applications. The device operates with input voltages from 4V to 36V and is protected from load dump transients up to 42V, easing input surge protection design. The device can program the output voltage between 0.8V to VIN. The low quiescent current design with the integrated low RDS(ON) power MOSFETs achieves high efficiency over the wide load range. The peak current mode control with simple external pensation allows the use of small inductors and results in fast transient response and good loop stability. The wide switching frequency of 300k Hz to 2200k Hz allows for efficiency and size optimization when selecting the output filter ponents. The ultra-low minimum ontime enables constant-frequency operation even at very high step-down ratios. For switching noise-sensitive applications, it can be externally synchronized from 300k Hz to 2200k Hz. The optional spread spectrum frequency modulation further helps system designers with better EMC management. The RTQ2105-QA offers precise constant current and constant voltage regulation. It is ideally suited for USB power delivery or charging super-capacitors. For applications that use long cables, the RTQ2105-QA offers cable drop pensation to maintain accurate regulation at the end of the long cable. The RTQ2105-QA provides plete protection functions such as input undervoltage-lockout, output undervoltage protection, overcurrent protection, and over‐temperature protection. Cycle-by-cycle current limit provides protection against shorted outputs, and softstart eliminates input current surge during start-up. The RTQ2105-QA is available in a WET- WQFN-24SL 4x4 (W-Type) package. The remended junction temperature range is - 40C to 150C. 2 Features - AEC-Q100 Grade 1 Qualified - Wide Input Voltage Range: 4V to 36V - Maximum Output Current: 3A - Peak Current Mode Control - Integrated 70m Switch and 70m Synchronous...