LD7120 - Leadtrend

LD7120 Single Synchronous Buck PWM Controller

The LD7120 is a single PWM controller designed to drive N-channel MOSFET in a synchronous buck topology. The IC integrates the controller, output adjustment, monitoring, and protection functions in a single 8-pin package. The LD7120 provides simple, single feedback loop, voltage mode controller with fast transient response. Internal 0.8V temperature-compensa.

Features

over current protection. The output current is monitored by sensing the voltage drop across the MOSFET RDS(ON), which eliminates the need for a current sensing resistor. Features
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• Operates from 5V Drives Two N-channel MOSFETs Fixed 300KHz Constant Switching Frequency Full 0~100% Duty-cycle Programmable Over Current Protection Internal Soft-start Fast Transient Response Under-voltage Lockout Applications
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• Motherboard Graphic Cards 5V Input DC/DC Converter Memory Supplies Cable Modem, Set Top Box and DSL Modems DSP and Core Communications Processor Supplies Typical A.