DESCRIPTION

The SP6125 is a PWM controlled step down (buck) voltage mode regulator with VIN feedforward and internal Type-II compensation. It operates from 4.5V to 29V, making is suitable for 5V, 12V, and 24V applications. By using a PMOS driver, this device is capable of operating at 100 duty cycle. The high side driver is designed to drive the gate 5V below VIN. The programmable overcurrent protection is based on high-side MOSFET’s ON resistance sensing and allows setting the overcurrent protection value up to 300mV threshold (measured from VIN-LX). The SP6125 is available in a space-saving 6-pin TSOT package making it the smallest controller available capable of operating from 24VDC supplies.

FEATURES

■ Wide 4.5V – 29V Input Voltage Range

■ Internal Compensation

■ Built-in High Current PMOS Driver

■ Adjustable Overcurrent Protection

■ Internal soft-start

■ 300kHz Constant Frequency Operation

■ 0.6V Reference Voltage

■ 1 output setpoint accuracy

■ Lead Free, RoHS Compliant Package: Small 6 pin TSOT