RT2657BQ - Richtek

RT2657BQ 2.25MHz 600mA Synchronous Step-Down Converter

The RT2657BQ is a high efficiency Pulse-WidthModulated (PWM) step-down DC/DC converter, capable of delivering 600mA output current over a wide input voltage range from 2.7V to 5.5V. The RT2657BQ is ideally suited for portable electronic devices that are powered from 1cell Li-ion battery or from other power sources such as cellular phones, PDAs, hand-held dev.

Features

 VIN Range 2.7V to 5.5V
 VOUT Range 0.6V to 5.5V (100% Duty Ratio Operation)
 VREF = 0.6V
 ISD ≤ 5μA (VEN = 0V)
 Current Mode Control, Internal Compensation
 Fixed FSW 2.25MHz
 RDS(ON) 230mΩ HS/250mΩ LS (P-MOSFET/ N-MOSFET)
 Enable (VIH = 1V, VIL = 0.4V)
 Internal Soft-Start (0.3ms)
 Up to 600mA Output Current
 Up to 90% Efficiency
 Peak ILIMIT (1.5A Typical / 0.8A Min); UVLO; UVP; VIN and VOUT OVP; and OTP (150°C)
 No Schottky Diode Required
 Internal Compensation to Reduce External Components
 AEC-Q100 Grade 3 Certification Applications
 Automotive Audio, Information & Naviga.