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RT8540A - High Power Synchronous Boost Converter

Datasheet Summary

Description

The RT8540A is a high-efficiency, high-current Boost converter in all single-cell Lithium-ion / polymer battery operated products.

The RT8540A maintains output current regulation by switching the internal high side and low side switch transistors.

Features

  • z Input Voltage Range : 2.8V to 5.5V z True Load Disconnect z Internal Synchronous Rectifier z Up to 90% Efficiency with Small Magnetics z Current Mode PWM Operation with Internal Compensation z Internal Soft-Start Control z Flexible on/off Control by I2C or EN. z Short Circuit Protection z Input Current Limit up to 4A z Over Voltage, Over Temperature Protection z Shutdown Current : 2μA z.
  • 40°C to 85°C Temperature Range z 20-Lead WQFN Package z RoHS Compliant and Halogen Free.

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Datasheet preview – RT8540A

Datasheet Details

Part number RT8540A
Manufacturer Richtek
File Size 185.84 KB
Description High Power Synchronous Boost Converter
Datasheet download datasheet RT8540A Datasheet
Additional preview pages of the RT8540A datasheet.

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Full PDF Text Transcription

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® RT8540A High Power Synchronous Boost Converter General Description The RT8540A is a high-efficiency, high-current Boost converter in all single-cell Lithium-ion / polymer battery operated products. The RT8540A maintains output current regulation by switching the internal high side and low side switch transistors. The transistor switches are pulse-width modulated at a fixed frequency of 2MHz. The high switching frequency allows the use of a small inductor and output capacitor, making the RT8540A ideally suited for small battery-powered applications. Output voltage can be set by an external resistor on the FB pin or by I2C interface.
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