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RT7257C Datasheet Synchronous Step-Down Converter

Manufacturer: Richtek

Overview: ® RT7257C 3A, 18V, 340kHz Synchronous Step-Down Converter General.

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General Description

The RT7257C is a high efficiency, monolithic synchronous step-down DC/DC converter that can deliver up to 3A output current from a 4.5V to 18V input supply.

The RT7257C's current mode architecture and external compensation allow the transient response to be optimized over a wide input voltage range and loads.

Cycle-by-cycle current limit provides protection against shorted outputs, and soft-start eliminates input current surge during start-up.

Key Features

  • z z z z z z z z z z z z z z z ±1.5% High Accuracy Reference Voltage 4.5V to 18V Input Voltage Range 3A Output Current Integrated N-MOSFET Switches Current Mode Control Fixed Frequency Operation : 340kHz Output Adjustable from 0.8V to 15V Stable with Low ESR Ceramic Output Capacitors Up to 95% Efficiency Programmable Soft-Start Cycle-by-Cycle Over Current Protection Input Under Voltage Lockout Output Under Voltage Protection Thermal Shutdown Protection RoHS Compliant and Halogen Free Ordering I.

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