General Description

The RT5796B is a high efficiency synchronous

step-down DC/DC converter. Its input voltage range is

from 2.5V to 6V and provides an adjustable regulated

output voltage from 0.6V to 3.4V while delivering up to

1.5A 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 RT5796B is available in the

T/SOT-23-5 and T/SOT-23-6 packages.

Features

 Efficiency Up to 95

 RDSON 160m HS / 110m LS

 VIN Range 2.5V to 6V

 VREF 0.6V with 2 Accuracy

 CMCOT™ Control Loop Design for Best

Transient Response, Robust Loop Stability with

Low-ESR (MLCC) COUT

 Fixed Soft-Start 1.2ms; PGOOD Function in

T/SOT-23-6

 Cycle-by-Cycle Over Current Protection

 Input Under Voltage Lockout

 Output Under Voltage Protection (UVP Hiccup)

 Thermal Shutdown Protection

Applications

 STB, Cable Modem, & xDSL Platforms

 LCD TV Power Supply & Metering Platforms

 General Purpose Point of Load (POL)