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