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RT7257G - Synchronous Step-Down Converter

Description

The RT7257G 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.

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 : 800kHz Output Adjustable from 0.8V to 12V Up to 95% Efficiency Programmable Soft-Start Stable with Low ESR Ceramic Output Capacitors Cycle-by-Cycle Current Limit Input Under Voltage Lockout Output Under Voltage Protection Thermal Shutdown Protection RoHS Compliant and Halogen Free Marking Information.

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Datasheet preview – RT7257G

Datasheet Details

Part number RT7257G
Manufacturer Richtek
File Size 258.82 KB
Description Synchronous Step-Down Converter
Datasheet download datasheet RT7257G Datasheet
Additional preview pages of the RT7257G datasheet.

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Full PDF Text Transcription

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® RT7257G 3A, 18V, 800kHz Synchronous Step-Down Converter General Description The RT7257G 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 RT7257G'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. The RT7257G also provides under voltage protection and thermal shutdown protection. The low current (<3μA) shutdown mode provides output disconnection, enabling easy power management in battery-powered systems. The RT7257G is available in an SOP-8 (Exposed Pad) package.
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