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RT8253A - 340kHz Synchronous Step-Down Converter

Description

The RT8253A is a high efficiency, monolithic synchronous step-down DC/DC converter that can deliver up to 3A output current from a 4.5V to 23V input supply.

Features

  • z z z z z z z z z z z z z z z ±1.5% High Accuracy Feedback Voltage 4.5V to 23V Input Voltage Range 3A Output Current Integrated N-MOSFET Switches Current Mode Control Fixed Frequency Operation : 340kHz Output Adjustable from 0.8V to 20V Up to 95% Efficiency Programmable Soft-Start Stable with Low ESR Ceramic Output Capacitors Cycle by Cycle Over Current Protection Input Under Voltage Lockout Output Under Voltage Protection Thermal Shutdown Protection RoHS Compliant and Halogen Free Ordering In.

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Datasheet preview – RT8253A

Datasheet Details

Part number RT8253A
Manufacturer Richtek
File Size 293.78 KB
Description 340kHz Synchronous Step-Down Converter
Datasheet download datasheet RT8253A Datasheet
Additional preview pages of the RT8253A datasheet.

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Full PDF Text Transcription

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RT8253A 3A, 23V, 340kHz Synchronous Step-Down Converter General Description The RT8253A is a high efficiency, monolithic synchronous step-down DC/DC converter that can deliver up to 3A output current from a 4.5V to 23V input supply. The RT8253A's current mode architecture and external compensation allow the transient response to be optimized over a wide range of loads and output capacitors. Cycle by cycle current limit provides protection against shorted outputs and soft-start eliminates input current surge during start up. Fault conditions also include output under voltage protection and thermal shutdown. The low current (<3 μ A) shutdown mode provides output disconnect, enabling easy power management in battery powered systems. The RT8253A is available in a SOP-8 (Exposed Pad) package.
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