RT6255A - Richtek

RT6255A Step-Down Converter

The RT6255A/B is a high-performance, synchronous stepdown DC-DC converter that can deliver up to 5A output current from a 4.5V to 18V input supply. The device integrates low RDS(ON) power MOSFETs, accurate 0.6V reference and an integrated diode of bootstrap circuit to offer a very compact solution. The RT6255A/B adopts Advanced Constant On-Time (ACOTTM) cont.

Features

are also integrated in the device including the cycle-by-cycle current limit control, UVP, input UVLO and OTP. The RT6255A/B is available in the TSOT-23-6 (FC) and TSOT-23-8 (FC) package. Features
 Input Supply Voltage Range : 4.5V to 18V
 Output Current : 5A
 Advanced Constant On-Time (ACOTTM) Control for Ultrafast Transient Response
 Steady Switching Frequency : 500kHz  Forced PWM Mode (RT6255B)  Pulse-Skipping Mode (PSM) at Light Load (RT6255A)
 Optimized for Low-ESR Ceramic Output Capacitors
 Programmable Output Voltage : 0.6V to 5V
 Internal 45mΩ Switch and 23mΩ Synchronous Rect.