The RT5735AWSC device is a full featured 5.5V, 5A, synchronous step down constant-on-time (COT) current mode converter with two integrated MOSFETs. The RT5735AWSC enables small designs by integrating the MOSFETs, implementing current mode control to reduce external component count, reducing inductor size by enabling up to 2.4MHz switching frequency, and minimizing the IC footprint with a small WL-CSP-20B 1.6x2 (BSC) package. The RT5735AWSC provides accurate regulation for a variety of loads with an accurate ±1% Voltage Reference (VREF) over temperature. Efficiency is maximized through the integrated 34mΩ/18mΩ MOSFETs and 70μA typical quiescent current. Using the enable pin, shutdown supply current is less than 2μA by entering a shutdown mode. The output voltage startup ramp is controlled by the slow start pin. An open-drain power good signal indicates the output is within 90% to 95% of its nominal voltage.
Feature
- 2.5V to 5.5V Input Supply Voltage
- Current Mode COT Control Loop Design
- Fast Transient Response
- Internal 34mΩ and 18mΩ Synchronous Rectifier
- Highly Accurate VOUT Regulation Over Load/Line Range
- Robust Loop Stability with Low-ESR COUT
- Over-Temperature Protection
Applications
- Distributed Power Systems
- Enterprise Servers, Ethernet Switches & Routers, and Global Storage Equipment
- Telecom & Industrial Equipment
