SC411 - Semtech Corporation

SC411 Synchronous Buck Pseudo-Fixed Frequency Power Supply Controller

The SC411 is a constant on-time synchronous buck PWM controller in a space-saving MLPQ package intended for use in notebook computers and other battery operated portable devices. Features include high efficiency and a fast dynamic response with no minimum on-time. The excellent transient response means that SC411 based solutions will require less output capac.

Features

include high efficiency and a fast dynamic response with no minimum on-time. The excellent transient response means that SC411 based solutions will require less output capacitance than competing fixed frequency converters. www.DataSheet4U.com SC411 Features Constant on-time for fast dynamic response Programmable VOUT range = 0.5
  – VCCA VBAT range = 1.8V
  – 25V DC current sense using low-side RDS(ON) Sensing or sense resistor Resistor programmable frequency Cycle-by-cycle current limit Digital soft-start Powersave option Over-voltage/under-voltage fault protection 10μA typical shutdown current L.