SP6126

Solved by SP6126 TM High-Voltage, Step Down Controller in TSOT6 LX FEATURES Wide 4.5V – 29V Input Voltage Range Internal Compensation Built-in High Current PMOS Driver Adjustable Overcurrent Protection Internal soft-start 600kHz Constant Frequency Operation 0.6V Reference Voltage 1% output setpoint accuracy Lead Free, RoHS Compliant Package: Small 6-Pin TSOT GND FB 6 5 4 SP6126 6 PinTSOT 1 VIN 2 GATE 3 VDR DESCRIPTION The SP6126 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 SP6126 is available in a space-saving 6-pin TSOT package making it the smallest controller available capable of operating from 24VDC supplies. www.DataSheet4U.com TYPICAL APPLICATION CIRCUIT VIN Q1 Si2343DS 2 1 Vin Rs=1k LX C7 0.1uF 6 L1, IHLP-2525CZ 6.8uH, 60mOhm, 4.5A Gate C1 10uF 12V GND VOUT SP6126 3 VDR 4 VFB GND 5 Ds MBRA340T3G RZ 2K R1 200k, 1% CZ 62pF R2 44.2k, 1% C4 22uF 3.3V 0-2.0A GND D1 1N4148 SHDN High=Of f Mar 29-07 RevD SP6126: TSOT-6 PFET Buck Controller  2007 Sipex Corporation 1 ABS...