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SP6126EK1L Datasheet(PDF) 1 Page - Sipex Corporation |
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SP6126EK1L Datasheet(HTML) 1 Page - Sipex Corporation |
1 / 14 page Mar 29-07 RevD SP6126: TSOT-6 PFET Buck Controller 2007 Sipex Corporation 1 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 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. TYPICAL APPLICATION CIRCUIT 6 5 4 1 2 3 SP6126 6 PinTSOT GND LX GATE FB VIN VDR High=Of f L1, IHLP-2525CZ 6.8uH, 60mOhm, 4.5A C4 22uF Ds MBRA340T3G R1 200k, 1% RZ 2K R2 44.2k, 1% Q1 Si2343DS CZ 62pF C7 0.1uF C1 10uF Rs=1k D1 1N4148 12V SHDN VIN GND GND VOUT Vin GND VDR VFB Gate LX SP6126 3.3V 0-2.0A 5 3 1 2 6 4 Solved by TM SP6126 High-Voltage, Step Down Controller in TSOT6 |
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