General Description
The RT5797B is a high efficiency synchronous stepdown
DC-DC converter. Its input voltage range is from
2.7V to 6V and provides an adjustable regulated output
voltage from 0.6V to 3.4V while delivering up to 3A of
output current.
The internal synchronous low on-resistance power
switches increase efficiency and eliminate the need for
an external Schottky diode. The Current Mode
Constant-On-time (CMCOT) operation with internal
compensation allows the transient response to be
optimized over a wide range of loads and output
capacitors. The RT5797B is available in the WDFN-8L
2x2 package.

Features
⚫ Efficiency Up to 95%
⚫ RDSON 100m HS / 70m LS
⚫ VIN Range 2.7V to 6V
⚫ VREF 0.6V with 1% Accuracy at 25C
⚫ CMCOT™ Control Loop Design for Best
Transient Response, Robust Loop Stability with
Low-ESR (MLCC) COUT
⚫ Soft-Start 1.2ms

Applications
⚫ STB, Cable Modem, & xDSL Platforms
⚫ LCD TV Power Supply & Metering Platforms
⚫ General Purpose Point of Load (POL)