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RT7257C - Synchronous Step-Down Converter

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.

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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Datasheet Details

Part number RT7257C
Manufacturer Richtek
File Size 234.99 KB
Description Synchronous Step-Down Converter
Datasheet download datasheet RT7257C Datasheet
Additional preview pages of the RT7257C datasheet.

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Full PDF Text Transcription

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® RT7257C 3A, 18V, 340kHz Synchronous Step-Down Converter 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. The RT7257C 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 RT7257C is available in an SOP-8 (Exposed Pad) package.
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